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Money is any item or verifiable record that is generally accepted as
payment A payment is the tender of something of value, such as money or its equivalent, by one party (such as a person or company) to another in exchange for goods or services provided by them, or to fulfill a legal obligation or philanthropy desir ...
for
goods and services Goods are items that are usually (but not always) tangible, such as pens or Apple, apples. Services are activities provided by other people, such as teachers or barbers. Taken together, it is the Production (economics), production, distributio ...
and repayment of
debt Debt is an obligation that requires one party, the debtor, to pay money Loan, borrowed or otherwise withheld from another party, the creditor. Debt may be owed by a sovereign state or country, local government, company, or an individual. Co ...
s, such as
taxes A tax is a mandatory financial charge or levy imposed on an individual or legal entity by a governmental organization to support government spending and public expenditures collectively or to regulate and reduce negative externalities. Tax co ...
, in a particular country or socio-economic context. The primary functions which distinguish money are:
medium of exchange In economics, a medium of exchange is any item that is widely acceptable in exchange for goods and services. In modern economies, the most commonly used medium of exchange is currency. Most forms of money are categorised as mediums of exchange, i ...
, a
unit of account In economics, unit of account is one of the functions of money. A unit of account is a standard numerical monetary unit of measurement of the market value of goods, services, and other transactions. Also known as a "measure" or "standard" of ...
, a
store of value A store of value is any commodity or asset that would normally retain purchasing power into the future and is the function of the asset that can be saved, retrieved and exchanged at a later time, and be predictably useful when retrieved. The most ...
and sometimes, a
standard of deferred payment In economics, standard of deferred payment is a function of money. It is the function of being a widely accepted way to value a debt, thereby allowing goods and services to be acquired now and paid for in the future. The 19th-century economist ...
. Money was historically an emergent market phenomenon that possessed intrinsic value as a
commodity In economics, a commodity is an economic goods, good, usually a resource, that specifically has full or substantial fungibility: that is, the Market (economics), market treats instances of the good as equivalent or nearly so with no regard to w ...
; nearly all contemporary money systems are based on unbacked
fiat money Fiat money is a type of government-issued currency that is not backed by a precious metal, such as gold or silver, nor by any other tangible asset or commodity. Fiat currency is typically designated by the issuing government to be legal tende ...
without
use value Use value () or value in use is a concept in classical political economy and Marxist economics. It refers to the tangible features of a commodity (a tradeable object) which can satisfy some human requirement, want or need, or which serves a usef ...
. Its value is consequently derived by social convention, having been declared by a
government A government is the system or group of people governing an organized community, generally a State (polity), state. In the case of its broad associative definition, government normally consists of legislature, executive (government), execu ...
or regulatory entity to be
legal tender Legal tender is a form of money that Standard of deferred payment, courts of law are required to recognize as satisfactory payment in court for any monetary debt. Each jurisdiction determines what is legal tender, but essentially it is anything ...
; that is, it must be accepted as a form of payment within the boundaries of the country, for "all debts, public and private", in the case of the
United States dollar The United States dollar (Currency symbol, symbol: Dollar sign, $; ISO 4217, currency code: USD) is the official currency of the United States and International use of the U.S. dollar, several other countries. The Coinage Act of 1792 introdu ...
. The
money supply In macroeconomics, money supply (or money stock) refers to the total volume of money held by the public at a particular point in time. There are several ways to define "money", but standard measures usually include currency in circulation (i ...
of a country comprises all
currency in circulation In monetary economics, the currency in circulation in a country is the value of currency or cash (banknotes and coins) that has ever been issued by the country’s monetary authority less the amount that has been removed. More broadly, money in ...
(
banknote A banknote or bank notealso called a bill (North American English) or simply a noteis a type of paper money that is made and distributed ("issued") by a bank of issue, payable to the bearer on demand. Banknotes were originally issued by commerc ...
s and
coin A coin is a small object, usually round and flat, used primarily as a medium of exchange or legal tender. They are standardized in weight, and produced in large quantities at a mint in order to facilitate trade. They are most often issued by ...
s currently issued) and, depending on the particular definition used, one or more types of
bank money Demand deposits or checkbook money are funds held in demand accounts in commercial banks. These account balances are usually considered money and form the greater part of the narrowly defined money supply of a country. Simply put, these are depo ...
(the balances held in
checking accounts A transaction account (also called a checking account, cheque account, chequing account, current account, demand deposit account, or share account at credit unions) is a deposit account or bank account held at a bank or other financial instituti ...
,
savings account A savings account is a bank account at a retail banking, retail bank. Common features include a limited number of withdrawals, a lack of cheque and linked debit card facilities, limited transfer options and the inability to be overdrawn. Traditi ...
s, and other types of
bank accounts A bank account is a financial account maintained by a bank or other financial institution in which the financial transactions between the bank and a customer are recorded. Each financial institution sets the terms and conditions for each type ...
). Bank money, whose value exists on the books of
financial institutions A financial institution, sometimes called a banking institution, is a business entity that provides service as an intermediary for different types of financial monetary transactions. Broadly speaking, there are three major types of financial ins ...
and can be converted into physical notes or used for
cashless payment In economics, cash is money in the physical form of currency, such as banknotes and coins. In book-keeping and financial accounting, cash is current assets comprising currency or currency equivalents that can be accessed immediately or near-im ...
, forms by far the largest part of
broad money In economics, broad money is a measure of the amount of money, or money supply, in a national economy including both highly liquid "narrow money" and less liquid forms. The European Central Bank, the OECD and the Bank of England all have their own ...
in developed countries.


Etymology

The word money derives from the Latin word with the meaning "coin" via French . The Latin word is believed to originate from a temple of Juno, on
Capitoline The Capitolium or Capitoline Hill ( ; ; ), between the Forum and the Campus Martius, is one of the Seven Hills of Rome. The hill was earlier known as ''Mons Saturnius'', dedicated to the god Saturn. The word ''Capitolium'' first referre ...
, one of Rome's seven hills. In the ancient world, Juno was often associated with money. The temple of
Juno Moneta In Roman mythology, Moneta (Latin Monēta) was a title given to two separate goddesses: It was the name of the goddess of memory (identified with the Greek goddess Mnemosyne), and it was an epithet of Juno, called Juno Moneta (Latin Iūno Mon� ...
at Rome was the place where the mint of Ancient Rome was located. The name "Juno" may have derived from the Etruscan goddess Uni and "Moneta" either from the Latin word "monere" (remind, warn, or instruct) or the Greek word "moneres" (alone, unique). In the Western world, a prevalent term for coin-money has been ''
specie Specie may refer to: * Coins or other metal money in mass circulation * Bullion coins * Hard money (policy) * Commodity money * Specie Circular, 1836 executive order by US President Andrew Jackson regarding hard money * Specie Payment Resumption A ...
'', stemming from Latin , meaning "in kind".


History

The use of
barter In trade, barter (derived from ''bareter'') is a system of exchange (economics), exchange in which participants in a financial transaction, transaction directly exchange good (economics), goods or service (economics), services for other goods ...
-like methods may date back to at least 100,000 years ago, though there is no evidence of a society or economy that relied primarily on barter. Instead, non-monetary societies operated largely along the principles of
gift economy A gift economy or gift culture is a system of exchange where valuables are not sold, but rather given without an explicit agreement for immediate or future rewards. Social norms and customs govern giving a gift in a gift culture; although there ...
and
debt Debt is an obligation that requires one party, the debtor, to pay money Loan, borrowed or otherwise withheld from another party, the creditor. Debt may be owed by a sovereign state or country, local government, company, or an individual. Co ...
. When barter did in fact occur, it was usually between either complete strangers or potential enemies. Many cultures around the world eventually developed the use of
commodity money Commodity money is money whose value comes from a commodity of which it is made. Commodity money consists of objects having value or use in themselves ( intrinsic value) as well as their value in buying goods. This is in contrast to representa ...
. The Mesopotamian
shekel A shekel or sheqel (; , , plural , ) is an ancient Mesopotamian coin, usually of silver. A shekel was first a unit of weight—very roughly 11 grams (0.35 ozt)—and became currency in ancient Tyre, Carthage and Hasmonean Judea. Name The wo ...
was a unit of weight, and relied on the mass of something like 160
grains A grain is a small, hard, dry fruit ( caryopsis) – with or without an attached hull layer – harvested for human or animal consumption. A grain crop is a grain-producing plant. The two main types of commercial grain crops are cereals and le ...
of
barley Barley (), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains; it was domesticated in the Fertile Crescent around 9000 BC, giving it nonshattering spikele ...
. The first usage of the term came from
Mesopotamia Mesopotamia is a historical region of West Asia situated within the Tigris–Euphrates river system, in the northern part of the Fertile Crescent. Today, Mesopotamia is known as present-day Iraq and forms the eastern geographic boundary of ...
circa 3000 BC. Societies in the Americas, Asia, Africa and Australia used
shell money Shell money is a medium of exchange similar to coin money and other forms of commodity money, and was once commonly used in many parts of the world. Shell money usually consisted of whole or partial sea shells, often worked into beads or otherw ...
—often, the shells of the
cowry Cowrie or cowry () is the common name for a group of small to large sea snails in the family Cypraeidae. Cowrie shells have held cultural, economic, and ornamental significance in various cultures. The cowrie was the shell most widely used wo ...
(''Cypraea moneta L.'' or ''C. annulus L.''). According to
Herodotus Herodotus (; BC) was a Greek historian and geographer from the Greek city of Halicarnassus (now Bodrum, Turkey), under Persian control in the 5th century BC, and a later citizen of Thurii in modern Calabria, Italy. He wrote the '' Histori ...
, the
Lydians The Lydians (Greek language, Greek: Λυδοί; known as ''Sparda'' to the Achaemenids, Old Persian cuneiform Wikt:𐎿𐎱𐎼𐎭, 𐎿𐎱𐎼𐎭) were an Anatolians, Anatolian people living in Lydia, a region in western Anatolia, who spo ...
were the first people to introduce the use of
gold Gold is a chemical element; it has chemical symbol Au (from Latin ) and atomic number 79. In its pure form, it is a brightness, bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal ...
and
silver coin Silver coins are one of the oldest mass-produced form of coinage. Silver has been used as a coinage metal since the times of the Greeks; their silver drachmas were popular trade coins. The ancient Persians used silver coins between 612–330 B ...
s. It is thought by modern scholars that these first stamped
coins A coin is a small object, usually round and flat, used primarily as a medium of exchange or legal tender. They are standardized in weight, and produced in large quantities at a mint in order to facilitate trade. They are most often issued by ...
were minted around 650 to 600 BC. The system of
commodity money Commodity money is money whose value comes from a commodity of which it is made. Commodity money consists of objects having value or use in themselves ( intrinsic value) as well as their value in buying goods. This is in contrast to representa ...
eventually evolved into a system of
representative money Representative money or receipt money is any medium of exchange, physical or digital, that represents something of Value (economics), value, but has little or no value of its own (intrinsic value (finance), intrinsic value). Unlike some forms of ...
. This occurred because gold and silver merchants or banks would issue receipts to their depositors, redeemable for the
commodity money Commodity money is money whose value comes from a commodity of which it is made. Commodity money consists of objects having value or use in themselves ( intrinsic value) as well as their value in buying goods. This is in contrast to representa ...
deposited. Eventually, these receipts became generally accepted as a means of payment and were used as money. Paper money or
banknotes A banknote or bank notealso called a bill (North American English) or simply a noteis a type of paper money that is made and distributed ("issued") by a bank of issue, payable to the bearer on demand. Banknotes were originally issued by commer ...
were first used in China during the
Song dynasty The Song dynasty ( ) was an Dynasties of China, imperial dynasty of China that ruled from 960 to 1279. The dynasty was founded by Emperor Taizu of Song, who usurped the throne of the Later Zhou dynasty and went on to conquer the rest of the Fiv ...
. These banknotes, known as "
jiaozi ''Jiaozi'' or Gyoza (; ) are a type of Chinese dumpling. ''Jiaozi'' typically consist of a ground meat or vegetable filling wrapped into a thinly rolled piece of dough, which is then sealed by pressing the edges together. ''Jiaozi'' can be ...
", evolved from
promissory notes A promissory note, sometimes referred to as a note payable, is a legal instrument (more particularly, a financing instrument and a debt instrument), in which one party (the ''maker'' or ''issuer'') promises in writing to pay a determinate sum of ...
that had been used since the 7th century. However, they did not displace commodity money and were used alongside coins. In the 13th century, paper money became known in Europe through the accounts of travellers, such as
Marco Polo Marco Polo (; ; ; 8 January 1324) was a Republic of Venice, Venetian merchant, explorer and writer who travelled through Asia along the Silk Road between 1271 and 1295. His travels are recorded in ''The Travels of Marco Polo'' (also known a ...
and
William of Rubruck William of Rubruck (; ; ) or Guillaume de Rubrouck was a Flemish Franciscan missionary and explorer. He is best known for his travels to various parts of the Middle East and Central Asia in the 13th century, including the Mongol Empire. His accoun ...
. Marco Polo's account of paper money during the
Yuan dynasty The Yuan dynasty ( ; zh, c=元朝, p=Yuáncháo), officially the Great Yuan (; Mongolian language, Mongolian: , , literally 'Great Yuan State'), was a Mongol-led imperial dynasty of China and a successor state to the Mongol Empire after Div ...
is the subject of a chapter of his book, ''
The Travels of Marco Polo ''Book of the Marvels of the World'' ( Italian: , lit. 'The Million', possibly derived from Polo's nickname "Emilione"), in English commonly called ''The Travels of Marco Polo'', is a 13th-century travelogue written down by Rustichello da Pis ...
'', titled " How the Great Kaan Causeth the Bark of Trees, Made Into Something Like Paper, to Pass for Money All Over his Country." Banknotes were first issued in Europe by
Stockholms Banco Stockholms Banco (also known as the Palmstruch's Bank, ) was the first European bank to print banknotes. It was founded in 1657 by Johan Palmstruch in Stockholm, began printing banknotes in 1661, but ran into financial difficulties and was liqui ...
in 1661 and were again also used alongside coins. The
gold standard A gold standard is a backed currency, monetary system in which the standard economics, economic unit of account is based on a fixed quantity of gold. The gold standard was the basis for the international monetary system from the 1870s to the ...
, a
monetary system A monetary system is a system where a government manages money in a country's economy. Modern monetary systems usually consist of the national treasury, the mint, the central banks and commercial banks. Commodity money system A commodity mon ...
where the medium of exchange are paper notes that are convertible into pre-set, fixed quantities of gold, replaced the use of gold coins as currency in the 17th–19th centuries in Europe. These gold standard notes were made
legal tender Legal tender is a form of money that Standard of deferred payment, courts of law are required to recognize as satisfactory payment in court for any monetary debt. Each jurisdiction determines what is legal tender, but essentially it is anything ...
, and redemption into gold coins was discouraged. By the beginning of the 20th century, almost all countries had adopted the gold standard, backing their legal tender notes with fixed amounts of gold. After
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
and the
Bretton Woods Conference The Bretton Woods Conference, formally known as the United Nations Monetary and Financial Conference, was the gathering of 730 delegates from all 44 allied nations at the Mount Washington Hotel, in Bretton Woods, New Hampshire, United States, to ...
, most countries adopted fiat currencies that were fixed to the U.S. dollar. The U.S. dollar was in turn fixed to gold. In 1971 the U.S. government suspended the convertibility of the dollar to gold. After this many countries de-pegged their currencies from the U.S. dollar, and most of the world's currencies became unbacked by anything except the governments' fiat of legal tender and the ability to convert the money into goods via payment. According to proponents of
modern money theory Modern monetary theory or modern money theory (MMT) is a heterodox macroeconomic theory that describes currency as a public monopoly and unemployment as evidence that a currency monopolist is overly restricting the supply of the financial ass ...
, fiat money is also backed by taxes. By imposing taxes, states create demand for the currency they issue.


Functions

In ''Money and the Mechanism of Exchange (1875)'',
William Stanley Jevons William Stanley Jevons (; 1 September 1835 – 13 August 1882) was an English economist and logician. Irving Fisher described Jevons's book ''A General Mathematical Theory of Political Economy'' (1862) as the start of the mathematical method i ...
famously analyzed money in terms of four functions: a ''
medium of exchange In economics, a medium of exchange is any item that is widely acceptable in exchange for goods and services. In modern economies, the most commonly used medium of exchange is currency. Most forms of money are categorised as mediums of exchange, i ...
'', a ''common measure of value'' (or
unit of account In economics, unit of account is one of the functions of money. A unit of account is a standard numerical monetary unit of measurement of the market value of goods, services, and other transactions. Also known as a "measure" or "standard" of ...
), a ''standard of value'' (or
standard of deferred payment In economics, standard of deferred payment is a function of money. It is the function of being a widely accepted way to value a debt, thereby allowing goods and services to be acquired now and paid for in the future. The 19th-century economist ...
), and a ''
store of value A store of value is any commodity or asset that would normally retain purchasing power into the future and is the function of the asset that can be saved, retrieved and exchanged at a later time, and be predictably useful when retrieved. The most ...
''. By 1919, Jevons's four functions of money were summarized in the
couplet In poetry, a couplet ( ) or distich ( ) is a pair of successive lines that rhyme and have the same metre. A couplet may be formal (closed) or run-on (open). In a formal (closed) couplet, each of the two lines is end-stopped, implying that there ...
: :Money's a matter of functions four, :A Medium, a Measure, a Standard, a Store. This couplet would later become widely popular in macroeconomics textbooks. Most modern textbooks now list only three functions, that of
medium of exchange In economics, a medium of exchange is any item that is widely acceptable in exchange for goods and services. In modern economies, the most commonly used medium of exchange is currency. Most forms of money are categorised as mediums of exchange, i ...
,
unit of account In economics, unit of account is one of the functions of money. A unit of account is a standard numerical monetary unit of measurement of the market value of goods, services, and other transactions. Also known as a "measure" or "standard" of ...
, and
store of value A store of value is any commodity or asset that would normally retain purchasing power into the future and is the function of the asset that can be saved, retrieved and exchanged at a later time, and be predictably useful when retrieved. The most ...
, not considering a standard of deferred payment as a distinguished function, but rather subsuming it in the others.Krugman, Paul & Wells, Robin, ''Economics'', Worth Publishers, New York (2006) There have been many historical disputes regarding the combination of money's functions, some arguing that they need more separation and that a single unit is insufficient to deal with them all. One of these arguments is that the role of money as a
medium of exchange In economics, a medium of exchange is any item that is widely acceptable in exchange for goods and services. In modern economies, the most commonly used medium of exchange is currency. Most forms of money are categorised as mediums of exchange, i ...
conflicts with its role as a
store of value A store of value is any commodity or asset that would normally retain purchasing power into the future and is the function of the asset that can be saved, retrieved and exchanged at a later time, and be predictably useful when retrieved. The most ...
: its role as a store of value requires holding it without spending, whereas its role as a medium of exchange requires it to circulate. T.H. Greco. ''Money: Understanding and Creating Alternatives to Legal Tender'', White River Junction, Vt: Chelsea Green Publishing (2001). Others argue that storing of value is just deferral of the exchange, but does not diminish the fact that money is a medium of exchange that can be transported both across space and time. The term "financial capital" is a more general and inclusive term for all liquid instruments, whether or not they are a uniformly recognized tender.


Medium of exchange

When money is used to intermediate the exchange of goods and services, it is performing a function as a ''medium of exchange''. It thereby avoids the inefficiencies of a barter system, such as the inability to permanently ensure "
coincidence of wants The coincidence of wants (often known as double coincidence of wants) is an economic phenomenon where two parties each hold an item that the other wants, so they exchange these items directly. Within economics, this has often been presented as t ...
". For example, between two parties in a barter system, one party may not have or make the item that the other wants, indicating the non-existence of the coincidence of wants. Having a medium of exchange can alleviate this issue because the former can have the freedom to spend time on other items, instead of being burdened to only serve the needs of the latter. Meanwhile, the latter can use the medium of exchange to seek for a party that can provide them with the item they want.


Measure of value

A ''unit of account'' (in economics) is a standard numerical monetary unit of measurement of the market value of goods, services, and other transactions. Also known as a "measure" or "standard" of relative worth and deferred payment, a unit of account is a necessary prerequisite for the formulation of commercial agreements that involve debt. Money acts as a standard measure and a common denomination of trade. It is thus a basis for quoting and bargaining of prices. It is necessary for developing efficient accounting systems like
double-entry bookkeeping Double-entry bookkeeping, also known as double-entry accounting, is a method of bookkeeping that relies on a two-sided accounting entry to maintain financial information. Every entry to an account requires a corresponding and opposite entry to a ...
.


Standard of deferred payment

While ''standard of deferred payment'' is distinguished by some texts, particularly older ones, other texts subsume this under other functions. A "standard of deferred payment" is an accepted way to settle a
debt Debt is an obligation that requires one party, the debtor, to pay money Loan, borrowed or otherwise withheld from another party, the creditor. Debt may be owed by a sovereign state or country, local government, company, or an individual. Co ...
—a unit in which debts are denominated, and the status of money as
legal tender Legal tender is a form of money that Standard of deferred payment, courts of law are required to recognize as satisfactory payment in court for any monetary debt. Each jurisdiction determines what is legal tender, but essentially it is anything ...
, in those jurisdictions which have this concept, states that it may function for the discharge of debts. When debts are denominated in money, the real value of debts may change due to inflation and
deflation In economics, deflation is a decrease in the general price level of goods and services. Deflation occurs when the inflation rate falls below 0% and becomes negative. While inflation reduces the value of currency over time, deflation increases i ...
, and for sovereign and international debts via
debasement A debasement of coinage is the practice of lowering the intrinsic value of coins, especially when used in connection with commodity money, such as gold or silver coins, while continuing to circulate it at face value. A coin is said to be debased ...
and
devaluation In macroeconomics and modern monetary policy, a devaluation is an official lowering of the value of a country's currency within a fixed exchange-rate system, in which a monetary authority formally sets a lower exchange rate of the national curre ...
.


Store of value

To act as a ''store of value'', money must be able to be reliably saved, stored, and retrieved—and be predictably usable as a medium of exchange when it is retrieved. The value of the money must also remain stable over time. Some have argued that inflation, by reducing the value of money, diminishes the ability of the money to function as a store of value.


Properties

The functions of money are that it is a medium of exchange, a unit of account, and a store of value. To fulfill these various functions, money must be: *
Fungible In economics and law, fungibility is the property of something whose individual units are considered fundamentally interchangeable with each other. For example, the fungibility of money means that a $100 bill (note) is considered entirely equ ...
: its individual units must be capable of mutual substitution (i.e., interchangeability). * Durable: able to withstand repeated use. * Divisible: divisible to small units. * Portable: easily carried and transported. * Acceptable: most people must accept the money as payment * Scarce: its supply in circulation must be limited.


Money supply

In economics, money is any
financial instrument Financial instruments are monetary contracts between parties. They can be created, traded, modified and settled. They can be cash (currency), evidence of an ownership, interest in an entity or a contractual right to receive or deliver in the form ...
that can fulfill the functions of money (detailed above). These financial instruments together are collectively referred to as the
money supply In macroeconomics, money supply (or money stock) refers to the total volume of money held by the public at a particular point in time. There are several ways to define "money", but standard measures usually include currency in circulation (i ...
of an economy. In other words, the money supply is the number of financial instruments within a specific economy available for purchasing goods or services. Since the money supply consists of various financial instruments (usually currency, demand deposits, and various other types of deposits), the amount of money in an economy is measured by adding together these financial instruments creating a ''monetary aggregate''. Economists employ different ways to measure the stock of money or money supply, reflected in different types of monetary aggregates, using a categorization system that focuses on the
liquidity Liquidity is a concept in economics involving the convertibility of assets and obligations. It can include: * Market liquidity In business, economics or investment, market liquidity is a market's feature whereby an individual or firm can quic ...
of the financial instrument used as money. The most commonly used monetary aggregates (or types of money) are conventionally designated M1, M2, and M3. These are successively larger aggregate categories: M1 is currency (coins and bills) plus
demand deposit Demand deposits or checkbook money are funds held in demand accounts in commercial banks. These account balances are usually considered money and form the greater part of the narrowly defined money supply of a country. Simply put, these are dep ...
s (such as checking accounts); M2 is M1 plus
savings account A savings account is a bank account at a retail banking, retail bank. Common features include a limited number of withdrawals, a lack of cheque and linked debit card facilities, limited transfer options and the inability to be overdrawn. Traditi ...
s and
time deposit A time deposit or term deposit (also known as a certificate of deposit in the United States, and as a guaranteed investment certificate in Canada) is a deposit in a financial institution with a specific maturity date or a period to maturity, c ...
s under $100,000; M3 is M2 plus larger time deposits and similar institutional accounts. M1 includes only the most liquid financial instruments, and M3 relatively illiquid instruments. The precise definition of M1, M2, etc. may be different in different countries. Another measure of money, M0, is also used. M0 is base money, or the amount of money actually issued by the
central bank A central bank, reserve bank, national bank, or monetary authority is an institution that manages the monetary policy of a country or monetary union. In contrast to a commercial bank, a central bank possesses a monopoly on increasing the mo ...
of a country. It is measured as currency plus deposits of banks and other institutions at the central bank. M0 is also the only money that can satisfy the
reserve requirements Reserve requirements are central bank regulations that set the minimum amount that a commercial bank must hold in liquid assets. This minimum amount, commonly referred to as the commercial bank's reserve, is generally determined by the centra ...
of
commercial banks A commercial bank is a financial institution that accepts Deposit (finance), deposits from the public and gives loans for the purposes of consumption and investment to make a Profit (economics), profit. It can also refer to a bank or a division o ...
.


Creation of money

In current economic systems, money is created by two procedures: Legal tender, or narrow money (M0) is the cash created by a Central Bank by minting coins and printing banknotes. Bank money, or broad money (M1/M2) is the money created by private banks through the recording of loans as deposits of borrowing clients, with partial support indicated by the ''cash ratio''. Currently, bank money is created as electronic money. Bank money, whose value exists on the books of financial institutions and can be converted into physical notes or used for cashless payment, forms by far the largest part of
broad money In economics, broad money is a measure of the amount of money, or money supply, in a national economy including both highly liquid "narrow money" and less liquid forms. The European Central Bank, the OECD and the Bank of England all have their own ...
in developed countries. In most countries, the majority of money is mostly created as M1/M2 by commercial banks making loans. Contrary to some popular misconceptions, banks do not act simply as intermediaries, lending out deposits that savers place with them, and do not depend on central bank money (M0) to create new loans and deposits.


Market liquidity

"Market liquidity" describes how easily an item can be traded for another item, or into the common currency within an economy. Money is the most liquid asset because it is universally recognized and accepted as a common currency. In this way, money gives consumers the
freedom Freedom is the power or right to speak, act, and change as one wants without hindrance or restraint. Freedom is often associated with liberty and autonomy in the sense of "giving oneself one's own laws". In one definition, something is "free" i ...
to trade goods and services easily without having to barter. Liquid financial instruments are easily
tradable Tradability is the property of a good or service that can be sold in another location distant from where it was produced. A good that is not tradable is called non-tradable. Different goods have differing levels of tradability: the higher the c ...
and have low
transaction cost In economics, a transaction cost is a cost incurred when making an economic trade when participating in a market. The idea that transactions form the basis of economic thinking was introduced by the institutional economist John R. Commons in 1 ...
s. There should be no (or minimal) spread between the prices to buy and sell the instrument being used as money.


Types


Commodity

Many items have been used as
commodity money Commodity money is money whose value comes from a commodity of which it is made. Commodity money consists of objects having value or use in themselves ( intrinsic value) as well as their value in buying goods. This is in contrast to representa ...
such as naturally scarce
precious metal Precious metals are rare, naturally occurring metallic chemical elements of high Value (economics), economic value. Precious metals, particularly the noble metals, are more corrosion resistant and less reactivity (chemistry), chemically reac ...
s,
conch shell Conch ( , , ) is a common name of a number of different medium-to-large-sized sea snails. Conch shells typically have a high spire and a noticeable siphonal canal (in other words, the shell comes to a noticeable point on both ends). Conchs ...
s,
barley Barley (), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains; it was domesticated in the Fertile Crescent around 9000 BC, giving it nonshattering spikele ...
, beads, etc., as well as many other things that are thought of as having value. Commodity money value comes from the commodity out of which it is made. The commodity itself constitutes the money, and the money is the commodity.Mises, Ludwig von. '' The Theory of Money and Credit'', (Indianapolis, IN: Liberty Fund, Inc., 1981), trans. H. E. Batson. Ch.3 Part One: The Nature of Money, Chapter 3: The Various Kinds of Money, Section 3: Commodity Money, Credit Money, and Fiat Money, Paragraph 25. Examples of commodities that have been used as mediums of exchange include gold, silver, copper, rice,
Wampum Wampum is a traditional shell bead of the Eastern Woodlands tribes of Native Americans. It includes white shell beads hand-fashioned from the North Atlantic channeled whelk shell and white and purple beads made from the quahog or Western ...
, salt, peppercorns, large stones, decorated belts, shells, alcohol, cigarettes, cannabis, candy, etc. These items were sometimes used in a metric of perceived value in conjunction with one another, in various commodity valuation or
price system In economics, a price system is a system through which the valuations of any forms of property (tangible or intangible) are determined. All societies use price systems in the allocation and exchange of resources as a consequence of scarcity. Eve ...
economies. The use of commodity money is similar to barter, but a commodity money provides a simple and automatic
unit of account In economics, unit of account is one of the functions of money. A unit of account is a standard numerical monetary unit of measurement of the market value of goods, services, and other transactions. Also known as a "measure" or "standard" of ...
for the commodity which is being used as money. Although some gold coins such as the
Krugerrand The Krugerrand (; ) is a South African coin, first minted on 3 July 1967 to help market South African gold and produced by Rand Refinery and the South African Mint. The name is a compound of '' Paul Kruger'', the former President of the South ...
are considered
legal tender Legal tender is a form of money that Standard of deferred payment, courts of law are required to recognize as satisfactory payment in court for any monetary debt. Each jurisdiction determines what is legal tender, but essentially it is anything ...
, there is no record of their face value on either side of the coin. The rationale for this is that emphasis is laid on their direct link to the prevailing value of their fine gold content. American Eagles are imprinted with their gold content and legal tender
face value The face value, sometimes called nominal value, is the value of a coin, bond, stamp or paper money as printed on the coin, stamp or bill itself by the issuing authority. The face value of coins, stamps, or bill is usually its legal value. Ho ...
.


Representative

In 1875, the British economist
William Stanley Jevons William Stanley Jevons (; 1 September 1835 – 13 August 1882) was an English economist and logician. Irving Fisher described Jevons's book ''A General Mathematical Theory of Political Economy'' (1862) as the start of the mathematical method i ...
described the money used at the time as "
representative money Representative money or receipt money is any medium of exchange, physical or digital, that represents something of Value (economics), value, but has little or no value of its own (intrinsic value (finance), intrinsic value). Unlike some forms of ...
". Representative money is money that consists of
token coin In numismatics, token coins or trade tokens are coin-like objects used instead of coins. The field of token coins is part of exonumia and token coins are token money. Their denomination is shown or implied by size, color or shape. They are of ...
s,
paper money Paper money, often referred to as a note or a bill (North American English), is a type of negotiable promissory note that is payable to the bearer on demand, making it a form of currency. The main types of paper money are government notes, which ...
or other physical tokens such as certificates, that can be reliably exchanged for a fixed quantity of a commodity such as gold or silver. The value of representative money stands in direct and fixed relation to the commodity that backs it, while not itself being composed of that commodity.


Fiat

Fiat money or fiat currency is money whose value is not derived from any intrinsic value or guarantee that it can be converted into a valuable commodity (such as gold). Instead, it has value only by government order (fiat). Usually, the government declares the fiat currency (typically notes and coins from a central bank, such as the
Federal Reserve System The Federal Reserve System (often shortened to the Federal Reserve, or simply the Fed) is the central banking system of the United States. It was created on December 23, 1913, with the enactment of the Federal Reserve Act, after a series of ...
in the U.S.) to be
legal tender Legal tender is a form of money that Standard of deferred payment, courts of law are required to recognize as satisfactory payment in court for any monetary debt. Each jurisdiction determines what is legal tender, but essentially it is anything ...
, making it unlawful not to accept the fiat currency as a means of repayment for all debts, public and private.Black, Henry Campbell (1910). ''A Law Dictionary Containing Definitions Of The Terms And Phrases Of American And English Jurisprudence, Ancient And Modern'', p. 494. West Publishing Co.
Black's Law Dictionary ''Black's Law Dictionary'' is the most frequently used legal dictionary in the United States. Henry Campbell Black (1860–1927) was the author of the first two editions of the dictionary. History The first edition was published in 1891 by Wes ...
defines the word "fiat" to mean "a short order or warrant of a Judge or magistrate directing some act to be done; an authority issuing from some competent source for the doing of some legal act"
Some
bullion coins A bullion coin (also known as a specie) is a coin struck from highly refined precious metal (bullion) and kept as a store of value or an investment rather than used in day-to-day commerce, or collectable, with numismatic value beyond that of its ...
such as the Australian Gold Nugget and American Eagle are legal tender, however, they trade based on the
market price A price is the (usually not negative) quantity of payment or compensation expected, required, or given by one party to another in return for goods or services. In some situations, especially when the product is a service rather than a phy ...
of the metal content as a
commodity In economics, a commodity is an economic goods, good, usually a resource, that specifically has full or substantial fungibility: that is, the Market (economics), market treats instances of the good as equivalent or nearly so with no regard to w ...
, rather than their legal tender
face value The face value, sometimes called nominal value, is the value of a coin, bond, stamp or paper money as printed on the coin, stamp or bill itself by the issuing authority. The face value of coins, stamps, or bill is usually its legal value. Ho ...
(which is usually only a small fraction of their bullion value).usmiNT.gov
. Retrieved July-18-09.
Fiat money, if physically represented in the form of currency (paper or coins), can be accidentally damaged or destroyed. However, fiat money has an advantage over representative or commodity money, in that the same laws that created the money can also define rules for its replacement in case of damage or destruction. For example, the U.S. government will replace mutilated
Federal Reserve Note Federal Reserve Notes are the currently issued banknotes of the United States dollar. The United States Bureau of Engraving and Printing produces the notes under the authority of the Federal Reserve Act of 1913 and issues them to the Federal Re ...
s (U.S. fiat money) if at least half of the physical note can be reconstructed, or if it can be otherwise proven to have been destroyed. By contrast, commodity money that has been lost or destroyed cannot be recovered.


Demurrage


Coinage

These factors led to the shift of the store of value being the metal itself: at first silver, then both silver and gold, and at one point there was bronze as well. Now we have copper coins and other non-precious metals as coins. Metals were mined, weighed, and stamped into coins. This was to assure the individual taking the coin that he was getting a certain known weight of precious metal. Coins could be counterfeited, but they also created a new
unit of account In economics, unit of account is one of the functions of money. A unit of account is a standard numerical monetary unit of measurement of the market value of goods, services, and other transactions. Also known as a "measure" or "standard" of ...
, which helped lead to banking.
Archimedes' principle Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially, is equal to the weight of the fluid that the body displaces. Archimedes' principle is a law of physics fun ...
provided the next link: coins could now be easily tested for their
fine Fine may refer to: Characters * Fran Fine, the title character of ''The Nanny'' * Sylvia Fine (''The Nanny''), Fran's mother on ''The Nanny'' * Officer Fine, a character in ''Tales from the Crypt'', played by Vincent Spano Legal terms * Fine (p ...
weight of the metal, and thus the value of a coin could be determined, even if it had been shaved, debased or otherwise tampered with (see
Numismatics Numismatics is the study or collection of currency, including coins, tokens, paper money, medals, and related objects. Specialists, known as numismatists, are often characterized as students or collectors of coins, but the discipline also inclu ...
). In most major economies using coinage, copper, silver, and gold formed three tiers of coins. Gold coins were used for large purchases, payment of the military, and backing of state activities. Silver coins were used for midsized transactions, and as a unit of account for taxes, dues, contracts, and fealty, while copper coins represented the coinage of common transaction. This system had been used in ancient
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
since the time of the
Mahajanapadas The Mahājanapadas were sixteen Realm, kingdoms and aristocracy, aristocratic republics that existed in ancient India from the sixth to fourth centuries BCE, during the History of India#Second urbanisation (c. 600 – 200 BCE), second urbanis ...
. In Europe, this system worked through the
medieval In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of World history (field), global history. It began with the fall of the West ...
period because there was virtually no new gold, silver, or copper introduced through mining or conquest. Thus the overall ratios of the three coinages remained roughly equivalent.


Paper

In premodern China, the need for credit and for circulating a medium that was less of a burden than exchanging thousands of copper coins led to the introduction of
paper money Paper money, often referred to as a note or a bill (North American English), is a type of negotiable promissory note that is payable to the bearer on demand, making it a form of currency. The main types of paper money are government notes, which ...
. This economic phenomenon was a slow and gradual process that took place from the late
Tang dynasty The Tang dynasty (, ; zh, c=唐朝), or the Tang Empire, was an Dynasties of China, imperial dynasty of China that ruled from 618 to 907, with an Wu Zhou, interregnum between 690 and 705. It was preceded by the Sui dynasty and followed ...
(618–907) into the
Song dynasty The Song dynasty ( ) was an Dynasties of China, imperial dynasty of China that ruled from 960 to 1279. The dynasty was founded by Emperor Taizu of Song, who usurped the throne of the Later Zhou dynasty and went on to conquer the rest of the Fiv ...
(960–1279). It began as a means for merchants to exchange heavy coinage for
receipt A receipt (also known as a packing list, packing slip, packaging slip, (delivery) docket, shipping list, delivery list, bill of the parcel, Manifest (transportation), manifest, or customer receipt) is a document acknowledging that something h ...
s of deposit issued as
promissory note A promissory note, sometimes referred to as a note payable, is a legal instrument (more particularly, a financing instrument and a debt instrument), in which one party (the ''maker'' or ''issuer'') promises in writing to pay a determinate sum of ...
s from shops of wholesalers, notes that were valid for temporary use in a small regional territory. In the 10th century, the
Song dynasty The Song dynasty ( ) was an Dynasties of China, imperial dynasty of China that ruled from 960 to 1279. The dynasty was founded by Emperor Taizu of Song, who usurped the throne of the Later Zhou dynasty and went on to conquer the rest of the Fiv ...
government began circulating these notes amongst the traders in their monopolized salt industry. The Song government granted several shops the sole right to issue banknotes, and in the early 12th century the government finally took over these shops to produce state-issued currency. Yet the banknotes issued were still regionally valid and temporary; it was not until the mid 13th century that a standard and uniform government issue of paper money was made into an acceptable nationwide currency. The already widespread methods of
woodblock printing Woodblock printing or block printing is a technique for printing text, images or patterns used widely throughout East Asia and originating in China in antiquity as a method of textile printing, printing on textiles and later on paper. Each page ...
and then Pi Sheng's
movable type Movable type (US English; moveable type in British English) is the system and technology of printing and typography that uses movable Sort (typesetting), components to reproduce the elements of a document (usually individual alphanumeric charac ...
printing by the 11th century was the impetus for the massive production of paper money in premodern China. At around the same time in the medieval Islamic world, a vigorous monetary economy was created during the 7th–12th centuries on the basis of the expanding levels of circulation of a stable high-value currency (the
dinar The dinar () is the name of the principal currency unit in several countries near the Mediterranean Sea, with a more widespread historical use. The English word "dinar" is the transliteration of the Arabic دينار (''dīnār''), which was bor ...
). Innovations introduced by economists, traders and merchants of the Muslim world include the earliest uses of
credit Credit (from Latin verb ''credit'', meaning "one believes") is the trust which allows one party to provide money or resources to another party wherein the second party does not reimburse the first party immediately (thereby generating a debt) ...
,
cheque A cheque (or check in American English) is a document that orders a bank, building society, or credit union, to pay a specific amount of money from a person's account to the person in whose name the cheque has been issued. The person writing ...
s,
savings account A savings account is a bank account at a retail banking, retail bank. Common features include a limited number of withdrawals, a lack of cheque and linked debit card facilities, limited transfer options and the inability to be overdrawn. Traditi ...
s,
transactional account A transaction account (also called a checking account, cheque account, chequing account, current account, demand deposit account, or share account at credit unions) is a deposit account or bank account held at a bank or other financial instituti ...
s, loaning,
trusts A trust is a legal relationship in which the owner of property, or any transferable right, gives it to another to manage and use solely for the benefit of a designated person. In the English common law, the party who entrusts the property is k ...
,
exchange rate In finance, an exchange rate is the rate at which one currency will be exchanged for another currency. Currencies are most commonly national currencies, but may be sub-national as in the case of Hong Kong or supra-national as in the case of ...
s, the transfer of credit and
debt Debt is an obligation that requires one party, the debtor, to pay money Loan, borrowed or otherwise withheld from another party, the creditor. Debt may be owed by a sovereign state or country, local government, company, or an individual. Co ...
, and
banking institution A financial institution, sometimes called a banking institution, is a business entity that provides service as an intermediary for different types of financial monetary transactions. Broadly speaking, there are three major types of financial ins ...
s for loans and
deposits A deposit account is a bank account maintained by a financial institution in which a customer can deposit and withdraw money. Deposit accounts can be savings accounts, current accounts or any of several other types of accounts explained below. ...
. In Europe, paper money was first introduced in
Sweden Sweden, formally the Kingdom of Sweden, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, and Finland to the east. At , Sweden is the largest Nordic count ...
in 1661. Sweden was rich in copper, thus, because of copper's low value, extraordinarily big coins (often weighing several kilograms) had to be made. The advantages of paper currency were numerous: it reduced transport of gold and silver, and thus lowered the risks; it made loaning gold or silver at interest easier since the specie (gold or silver) never left the possession of the lender until someone else redeemed the note; and it allowed for a division of currency into credit and specie backed forms. It enabled the sale of
stock Stocks (also capital stock, or sometimes interchangeably, shares) consist of all the Share (finance), shares by which ownership of a corporation or company is divided. A single share of the stock means fractional ownership of the corporatio ...
in joint stock companies, and the redemption of those
shares In financial markets, a share (sometimes referred to as stock or equity) is a unit of equity ownership in the capital stock of a corporation. It can refer to units of mutual funds, limited partnerships, and real estate investment trusts. Sha ...
in the paper. However, these advantages are held within their disadvantages. First, since a note has no intrinsic value, there was nothing to stop issuing authorities from printing more of it than they had specie to back it with. Second, because it increased the money supply, it increased inflationary pressures, a fact observed by
David Hume David Hume (; born David Home; – 25 August 1776) was a Scottish philosopher, historian, economist, and essayist who was best known for his highly influential system of empiricism, philosophical scepticism and metaphysical naturalism. Beg ...
in the 18th century. The result is that paper money would often lead to an inflationary bubble, which could collapse if people began demanding hard money, causing the demand for paper notes to fall to zero. The printing of paper money was also associated with wars, and financing of wars, and therefore regarded as part of maintaining a
standing army A standing army is a permanent, often professional, army. It is composed of full-time soldiers who may be either career soldiers or conscripts. It differs from army reserves, who are enrolled for the long term, but activated only during wars ...
. For these reasons, paper currency was held in suspicion and hostility in Europe and America. It was also addictive since the speculative profits of trade and capital creation were quite large. Major nations established
mints A mint or breath mint is a food item often consumed as an after-meal refreshment or before business and social engagements to improve breath odor. Mints are commonly believed to soothe the stomach, given their association with natural byproducts ...
to print money and mint coins, and branches of their treasury to collect taxes and hold gold and silver stock. At this time both silver and gold were considered
legal tender Legal tender is a form of money that Standard of deferred payment, courts of law are required to recognize as satisfactory payment in court for any monetary debt. Each jurisdiction determines what is legal tender, but essentially it is anything ...
, and accepted by governments for taxes. However, the instability in the ratio between the two grew over the 19th century, with the increase both in the supply of these metals, particularly silver, and of trade. This is called
bimetallism Bimetallism, also known as the bimetallic standard, is a monetary standard in which the value of the monetary unit is defined as equivalent to certain quantities of two metals, typically gold and silver, creating a fixed Exchange rate, rate of ...
and the attempt to create a bimetallic standard where both gold and silver backed currency remained in circulation occupied the efforts of inflationists. Governments at this point could use currency as an instrument of policy, printing paper currency such as the United States greenback, to pay for military expenditures. They could also set the terms at which they would redeem notes for specie, by limiting the amount of purchase, or the minimum amount that could be redeemed. By 1900, most of the industrializing nations were on some form of a gold standard, with paper notes and silver coins constituting the circulating medium. Private banks and governments across the world followed
Gresham's law In economics, Gresham's law is a monetary principle stating that "bad money drives out good". For example, if there are two forms of commodity money in circulation, which are accepted by law as having similar face value, the more valuable commo ...
: keeping gold and silver paid but paying out in notes. This did not happen all around the world at the same time, but occurred sporadically, generally in times of war or financial crisis, beginning in the early part of the 20th century and continuing across the world until the late 20th century, when the regime of floating fiat currencies came into force. One of the last countries to break away from the
gold standard A gold standard is a backed currency, monetary system in which the standard economics, economic unit of account is based on a fixed quantity of gold. The gold standard was the basis for the international monetary system from the 1870s to the ...
was the United States in 1971. No country anywhere in the world today has an enforceable gold standard or
silver standard The silver standard is a monetary system in which the standard economic unit of account is a fixed weight of silver. Silver was far more widespread than gold as the monetary standard worldwide, from the Sumerians 3000 BC until 1873. Following t ...
currency system.


Commercial bank

Commercial bank money or
demand deposit Demand deposits or checkbook money are funds held in demand accounts in commercial banks. These account balances are usually considered money and form the greater part of the narrowly defined money supply of a country. Simply put, these are dep ...
s are claims against financial institutions that can be used for the purchase of goods and services. A demand deposit account is an account from which funds can be withdrawn at any time by check or
cash In economics, cash is money in the physical form of currency, such as banknotes and coins. In book-keeping and financial accounting, cash is current assets comprising currency or currency equivalents that can be accessed immediately or near-i ...
withdrawal without giving the bank or financial institution any prior notice. Banks have the legal obligation to return funds held in demand deposits immediately upon demand (or 'at call'). Demand deposit withdrawals can be performed in person, via checks or bank drafts, using
automatic teller machine An automated teller machine (ATM) is an electronic telecommunications device that enables customers of financial institutions to perform financial transactions, such as cash withdrawals, deposits, funds transfers, balance inquiries or account ...
s (ATMs), or through
online banking Online banking, also known as internet banking, virtual banking, web banking or home banking, is a system that enables customers of a bank or other financial institution to conduct a range of financial transactions through the financial institut ...
. Commercial bank money is created by commercial banks whose reserves (held as cash and other highly liquid assets) typically constitute only a fraction of their
deposits A deposit account is a bank account maintained by a financial institution in which a customer can deposit and withdraw money. Deposit accounts can be savings accounts, current accounts or any of several other types of accounts explained below. ...
, while the banks maintain an obligation to redeem all these deposits upon demand - a practise known as
fractional-reserve banking Fractional-reserve banking is the system of banking in all countries worldwide, under which banks that take deposits from the public keep only part of their deposit liabilities in liquid assets as a reserve, typically lending the remainder to ...
. Commercial bank money differs from commodity and fiat money in two ways: firstly it is non-physical, as its existence is only reflected in the account ledgers of banks and other financial institutions, and secondly, there is some element of risk that the claim will not be fulfilled if the financial institution becomes insolvent. The
money multiplier In monetary economics, the money multiplier is the ratio of the money supply to the monetary base (i.e. central bank money). In some simplified expositions, the monetary multiplier is presented as simply the reciprocal of the reserve ratio, i ...
theory presents the process of creating commercial bank money as a multiple (greater than 1) of the amount of base money created by the country's
central bank A central bank, reserve bank, national bank, or monetary authority is an institution that manages the monetary policy of a country or monetary union. In contrast to a commercial bank, a central bank possesses a monopoly on increasing the mo ...
, the multiple itself being a function of the legal regulation of banks imposed by financial regulators (e.g., potential
reserve requirement Reserve requirements are central bank regulations that set the minimum amount that a commercial bank must hold in liquid assets. This minimum amount, commonly referred to as the Bank reserves, commercial bank's reserve, is generally determined ...
s) beside the business policies of
commercial bank A commercial bank is a financial institution that accepts deposits from the public and gives loans for the purposes of consumption and investment to make a profit. It can also refer to a bank or a division of a larger bank that deals with whol ...
s and the preferences of
household A household consists of one or more persons who live in the same dwelling. It may be of a single family or another type of person group. The household is the basic unit of analysis in many social, microeconomic and government models, and is im ...
s - factors which the central bank can influence, but not control completely. Contemporary central banks generally do not control the creation of money, nor do they try to, though their interest rate-setting monetary policies naturally affect the amount of loans and deposits that commercial banks create.


Digital or electronic

The development of computer technology in the second part of the twentieth century allowed money to be represented digitally. By 1990, in the United States all money transferred between its central bank and commercial banks was in electronic form. By the 2000s most money existed as
digital currency Digital currency (digital money, electronic money or electronic currency) is any currency, money, or money-like asset that is primarily managed, stored or exchanged on digital computer systems, especially over the internet. Types of digital cu ...
in bank databases. In 2012, by number of transaction, 20 to 58 percent of transactions were electronic (dependent on country). Anonymous digital currencies were developed in the early 2000s. Early examples include Ecash,
bit gold Nicholas Szabo is an American computer scientist, legal scholar, and cryptographer known for his research in smart contracts and digital currency. Personal life Szabo currently resides in Seattle, Washington and is married to Michelle Szabo. ...
, RPOW, and b-money. Not much innovation occurred until the conception of
Bitcoin Bitcoin (abbreviation: BTC; Currency symbol, sign: ₿) is the first Decentralized application, decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 when an unknown entity published a white paper under ...
in 2008, which introduced the concept of a decentralised currency that requires no trusted third party.


Monetary policy

When gold and silver were used as money, the money supply could grow only if the supply of these metals was increased by mining. This rate of increase would accelerate during periods of
gold rush A gold rush or gold fever is a discovery of gold—sometimes accompanied by other precious metals and rare-earth minerals—that brings an onrush of miners seeking their fortune. Major gold rushes took place in the 19th century in Australia, ...
es and discoveries, such as when Columbus traveled to the
New World The term "New World" is used to describe the majority of lands of Earth's Western Hemisphere, particularly the Americas, and sometimes Oceania."America." ''The Oxford Companion to the English Language'' (). McArthur, Tom, ed., 1992. New York: ...
and brought back gold and silver to Spain, or when gold was discovered in California in 1848. This caused inflation, as the value of gold went down. However, if the rate of
gold mining Gold mining is the extraction of gold by mining. Historically, mining gold from Alluvium, alluvial deposits used manual separation processes, such as gold panning. The expansion of gold mining to ores that are not on the surface has led to mor ...
could not keep up with the growth of the economy, gold became relatively more valuable, and prices (denominated in gold) would drop, causing deflation. Deflation was the more typical situation for over a century when gold and paper money backed by gold were used as money in the 18th and 19th centuries. Modern-day monetary systems are based on fiat money and are no longer tied to the value of gold. The amount of money in the economy is influenced by
monetary policy Monetary policy is the policy adopted by the monetary authority of a nation to affect monetary and other financial conditions to accomplish broader objectives like high employment and price stability (normally interpreted as a low and stable rat ...
, which is the process by which a
central bank A central bank, reserve bank, national bank, or monetary authority is an institution that manages the monetary policy of a country or monetary union. In contrast to a commercial bank, a central bank possesses a monopoly on increasing the mo ...
influences the economy to achieve specific goals. Often, the goal of monetary policy is to maintain low and stable
inflation In economics, inflation is an increase in the average price of goods and services in terms of money. This increase is measured using a price index, typically a consumer price index (CPI). When the general price level rises, each unit of curre ...
, directly via an
inflation targeting In macroeconomics, inflation targeting is a monetary policy where a central bank follows an explicit target for the inflation rate for the medium-term and announces this inflation target to the public. The assumption is that the best that moneta ...
strategy, or indirectly via a
fixed exchange rate system A fixed exchange rate, often called a pegged exchange rate, is a type of exchange rate regime in which a currency's value is fixed or pegged by a monetary authority against the value of another currency, a basket of other currencies, or another ...
against a major currency with a stable inflation rate. In some cases, the central bank may pursue various supplementary goals. For example, it is clearly stated in the
Federal Reserve Act The Federal Reserve Act was passed by the 63rd United States Congress and signed into law by President Woodrow Wilson on December 23, 1913. The law created the Federal Reserve System, the central banking system of the United States. After Dem ...
that the
Board of Governors A board of directors is a governing body that supervises the activities of a business, a nonprofit organization, or a government agency. The powers, duties, and responsibilities of a board of directors are determined by government regulations ...
and the
Federal Open Market Committee The Federal Open Market Committee (FOMC) is a committee within the Federal Reserve System (the Fed) that is charged under United States law with overseeing the nation's open market operations (e.g., the Fed's buying and selling of United Stat ...
should seek "to promote effectively the goals of maximum employment, stable prices, and moderate long-term interest rates." A failed monetary policy can have significant detrimental effects on an economy and the society that depends on it. These include
hyperinflation In economics, hyperinflation is a very high and typically accelerating inflation. It quickly erodes the real versus nominal value (economics), real value of the local currency, as the prices of all goods increase. This causes people to minimiz ...
,
stagflation Stagflation is the combination of high inflation, stagnant economic growth, and elevated unemployment. The term ''stagflation'', a portmanteau of "stagnation" and "inflation," was popularized, and probably coined, by British politician Iain Mac ...
,
recession In economics, a recession is a business cycle contraction that occurs when there is a period of broad decline in economic activity. Recessions generally occur when there is a widespread drop in spending (an adverse demand shock). This may be tr ...
, high unemployment, shortages of imported goods, inability to export goods, and even total monetary collapse and the adoption of a much less efficient barter economy. This happened in Russia, for instance, after the
fall of the Soviet Union The Soviet Union was formally dissolved as a sovereign state and subject of international law on 26 December 1991 by Declaration No. 142-N of the Soviet of Nationalities, Soviet of the Republics of the Supreme Soviet of the Soviet Union. :s: ...
. Monetary policy strategies have changed over time. Some of the tools used to conduct contemporary monetary policy include: * changing the
interest rate An interest rate is the amount of interest due per period, as a proportion of the amount lent, deposited, or borrowed (called the principal sum). The total interest on an amount lent or borrowed depends on the principal sum, the interest rate, ...
at which the central bank loans money to (or borrows money from) the commercial banks *
open market operation In macroeconomics, an open market operation (OMO) is an activity by a central bank to exchange liquidity in its currency with a bank or a group of banks. The central bank can either transact government bonds and other financial assets in the ope ...
s including currency purchases or sales * forward guidance, i.e. publishing forecasts to communicate the likely future course of monetary policy * raising or lowering bank
reserve requirement Reserve requirements are central bank regulations that set the minimum amount that a commercial bank must hold in liquid assets. This minimum amount, commonly referred to as the Bank reserves, commercial bank's reserve, is generally determined ...
s In the U.S., the
Federal Reserve The Federal Reserve System (often shortened to the Federal Reserve, or simply the Fed) is the central banking system of the United States. It was created on December 23, 1913, with the enactment of the Federal Reserve Act, after a series of ...
is responsible for conducting monetary policy, while in the
eurozone The euro area, commonly called the eurozone (EZ), is a Monetary union, currency union of 20 Member state of the European Union, member states of the European Union (EU) that have adopted the euro (Euro sign, €) as their primary currency ...
the respective institution is the
European Central Bank The European Central Bank (ECB) is the central component of the Eurosystem and the European System of Central Banks (ESCB) as well as one of seven institutions of the European Union. It is one of the world's Big Four (banking)#International ...
. Other central banks with a significant impact on global finances are the
Bank of Japan The is the central bank of Japan.Louis Frédéric, Nussbaum, Louis Frédéric. (2005). "Nihon Ginkō" in The bank is often called for short. It is headquartered in Nihonbashi, Chūō, Tokyo, Chūō, Tokyo. The said bank is a corporate entity ...
,
People's Bank of China The People's Bank of China (officially PBC and unofficially PBOC) is the central bank of the People's Republic of China. It is responsible for carrying out monetary policy as determined by the ''PRC People's Bank Law'' and the ''PRC Commercia ...
and the
Bank of England The Bank of England is the central bank of the United Kingdom and the model on which most modern central banks have been based. Established in 1694 to act as the Kingdom of England, English Government's banker and debt manager, and still one ...
. During the 1970s and 1980s monetary policy in several countries was influenced by an
economic theory Economics () is a behavioral science that studies the production, distribution, and consumption of goods and services. Economics focuses on the behaviour and interactions of economic agents and how economies work. Microeconomics anal ...
known as monetarism.
Monetarism Monetarism is a school of thought in monetary economics that emphasizes the role of policy-makers in controlling the amount of money in circulation. It gained prominence in the 1970s, but was mostly abandoned as a direct guidance to monetar ...
argued that management of the
money supply In macroeconomics, money supply (or money stock) refers to the total volume of money held by the public at a particular point in time. There are several ways to define "money", but standard measures usually include currency in circulation (i ...
should be the primary means of regulating economic activity. The stability of the demand for money prior to the 1980s was a key finding of
Milton Friedman Milton Friedman (; July 31, 1912 – November 16, 2006) was an American economist and statistician who received the 1976 Nobel Memorial Prize in Economic Sciences for his research on consumption analysis, monetary history and theory and ...
and
Anna Schwartz Anna Jacobson Schwartz (pronounced ; November 11, 1915 – June 21, 2012) was an American economist who worked at the National Bureau of Economic Research in New York City and a writer for ''The New York Times''. Paul Krugman has said that Sch ...
supported by the work of David Laidler, and many others. It turned out, however, that maintaining a monetary policy strategy of targeting the money supply did not work very well: The relation between money growth and inflation was not as tight as expected by monetarist theory, and the short-run relation between the money supply and the interest rate, which is the chief instrument through which the central bank can influence output and inflation, was unreliable. Both problems were due to unpredictable shifts in the demand for money. Consequently, starting in the early 1990s a fundamental reorientation took place in most major central banks, starting to target inflation directly instead of the money supply and using the interest rate as their main instrument.


Locality

The definition of money says it is money only "in a particular country or socio-economic context". In general, communities only use a single measure of value, which can be identified in the prices of goods listed for sale. There might be multiple media of exchange, which can be observed by what is given to purchase goods ("medium of exchange"), etc. In most countries, the government acts to encourage a particular forms of money, such as requiring it for taxes and punishing
fraud In law, fraud is intent (law), intentional deception to deprive a victim of a legal right or to gain from a victim unlawfully or unfairly. Fraud can violate Civil law (common law), civil law (e.g., a fraud victim may sue the fraud perpetrato ...
. Some places do maintain two or more currencies, particularly in border towns or high-travel areas. Shops in these locations might list prices and accept payment in multiple currencies. Otherwise, foreign currency is treated as a
financial asset A financial asset is a non-physical asset whose value is derived from a contractual claim, such as deposit (finance), bank deposits, bond (finance), bonds, and participations in companies' share capital. Financial assets are usually more market li ...
in the local market. Foreign currency is commonly bought or sold on
foreign exchange market The foreign exchange market (forex, FX, or currency market) is a global decentralized or over-the-counter (OTC) market for the trading of currencies. This market determines foreign exchange rates for every currency. By trading volume, ...
s by travelers and traders. Communities can change the money they use, which is known as
currency substitution Currency substitution is the use of a foreign currency in parallel to or instead of a domestic currency. Currency substitution can be full or partial. Full currency substitution can occur after a major economic crisis, such as in Ecuador, El S ...
. This can happen intentionally, when a government issues a new currency. For example, when Brazil moved from the Brazilian cruzeiro to the
Brazilian real The Brazilian real (plural, pl. '; currency symbol, sign: R$; ISO 4217, code: BRL) is the official currency of Brazil. It is subdivided into 100 centavos. The Central Bank of Brazil is the central bank and the issuing authority. The real repl ...
. It can also happen spontaneously, when the people refuse to accept a currency experiencing
hyperinflation In economics, hyperinflation is a very high and typically accelerating inflation. It quickly erodes the real versus nominal value (economics), real value of the local currency, as the prices of all goods increase. This causes people to minimiz ...
(even if its use is encouraged by the government). The money used by a community can change on a smaller scale. This can come through innovation, such as the adoption of cheques (checks).
Gresham's law In economics, Gresham's law is a monetary principle stating that "bad money drives out good". For example, if there are two forms of commodity money in circulation, which are accepted by law as having similar face value, the more valuable commo ...
says that "bad money drives out good". That is, when buying a good, a person is more likely to pass on less-desirable items that qualify as "money" and hold on to more valuable ones. For example, coins with less silver in them (but which are still valid coins) are more likely to circulate in the community. This may effectively change the money used by a community. The money used by a community does not have to be a currency issued by a government. A famous example of community adopting a new form of money is prisoners-of-war using cigarettes to trade.


Financial crimes


Counterfeiting

Counterfeit money is imitation currency produced without the legal sanction of the state or government. Producing or using counterfeit money is a form of fraud or forgery. Counterfeiting is almost as old as money itself. Plated copies (known as Fourrées) have been found of Lydian coins which are thought to be among the first western coins. Historically, objects that were difficult to counterfeit (e.g. shells, rare stones, precious metals) were often chosen as money. Before the introduction of
paper money Paper money, often referred to as a note or a bill (North American English), is a type of negotiable promissory note that is payable to the bearer on demand, making it a form of currency. The main types of paper money are government notes, which ...
, the most prevalent method of counterfeiting involved mixing base metals with pure gold or silver. A form of counterfeiting is the production of documents by legitimate printers in response to fraudulent instructions. During
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, the
Nazis Nazism (), formally named National Socialism (NS; , ), is the far-right politics, far-right Totalitarianism, totalitarian socio-political ideology and practices associated with Adolf Hitler and the Nazi Party (NSDAP) in Germany. During H ...
forged British pounds and American dollars. Today some of the finest counterfeit banknotes are called '' Superdollars'' because of their high quality and likeness to the real U.S. dollar. There has been significant counterfeiting of
Euro The euro (currency symbol, symbol: euro sign, €; ISO 4217, currency code: EUR) is the official currency of 20 of the Member state of the European Union, member states of the European Union. This group of states is officially known as the ...
banknotes and coins since the launch of the currency in 2002, but considerably less than for the U.S. dollar.


Money laundering

Money laundering is the process in which the proceeds of crime are transformed into ostensibly legitimate money or other assets. However, in several legal and regulatory systems the term money laundering has become conflated with other forms of financial crime, and sometimes used more generally to include misuse of the financial system (involving things such as securities, digital currencies, credit cards, and traditional currency), including
terrorism financing Terrorism financing is the provision of funds or providing financial support to individual terrorists or non-state actors. Most countries have implemented measures to counter terrorism financing (CTF) often as part of their money laundering law ...
,
tax evasion Tax evasion or tax fraud is an illegal attempt to defeat the imposition of taxes by individuals, corporations, trusts, and others. Tax evasion often entails the deliberate misrepresentation of the taxpayer's affairs to the tax authorities to red ...
, and evading of
international sanctions International sanctions are political and economic decisions that are part of diplomatic efforts by countries, multilateral or regional organizations against states or organizations either to protect national security interests, or to protect i ...
.


See also

*
Calculation in kind Calculation in kind or calculation in-natura is a way of valuating resources and a system of accounting that uses disaggregated physical magnitudes as opposed to a common unit of calculation. As the basis for a socialist economy, it was proposed ...
*
Coin of account A coin of account is a unit of money that does not exist as an actual coin (that is, a metal disk) but is used in figuring prices or other amounts of money. Examples Mill The ''mill'' (or sometimes, ''mil'') is a coin of account in the United Sta ...
* Commons-based peer production *
Counterfeit money Counterfeit money is currency produced outside of the legal sanction of a state or government, usually in a deliberate attempt to imitate that currency and so as to deceive its recipient. Producing or using counterfeit money is a form of fraud ...
*
Digital currency Digital currency (digital money, electronic money or electronic currency) is any currency, money, or money-like asset that is primarily managed, stored or exchanged on digital computer systems, especially over the internet. Types of digital cu ...
*
Finance Finance refers to monetary resources and to the study and Academic discipline, discipline of money, currency, assets and Liability (financial accounting), liabilities. As a subject of study, is a field of Business administration, Business Admin ...
*
Foreign exchange market The foreign exchange market (forex, FX, or currency market) is a global decentralized or over-the-counter (OTC) market for the trading of currencies. This market determines foreign exchange rates for every currency. By trading volume, ...
*
Free Money Day Free Money Day is a global social experiment held annually on September 15, the anniversary of the Lehman Brothers' 2008 filing for bankruptcy. Participants hand out money to strangers, asking them to pass half onto someone else. Money is excha ...
*
Gift economy A gift economy or gift culture is a system of exchange where valuables are not sold, but rather given without an explicit agreement for immediate or future rewards. Social norms and customs govern giving a gift in a gift culture; although there ...
*
Intelligent banknote neutralisation system An intelligent banknote neutralisation system (IBNS) is a security system, that is used by banks, ATMs, retail establishments, vending machines and the cash-in-transit industry, to render stolen funds un-useable and easily identifable. Dye pack ...
*
Labour voucher Labour vouchers (also known as labour cheques, labour notes, labour certificates and personal credit) are a device proposed to govern demand for goods in some models of socialism and to replace some of the tasks performed by currency under capi ...
* Leprosy colony money *
Local exchange trading system A local exchange trading system (also local employment and trading system or local energy transfer system; abbreviated LETS) is a locally initiated, democratically organised, not-for-profit community enterprise that provides a community infor ...
*
Monetary economics Monetary economics is the branch of economics that studies the different theories of money: it provides a framework for analyzing money and considers its functions (as medium of exchange, store of value, and unit of account), and it considers how m ...
* Money bag *
Money management Investment management (sometimes referred to more generally as financial asset management) is the professional asset management of various securities, including shareholdings, bonds, and other assets, such as real estate, to meet specified ...
*
Non-monetary economy A moneyless economy or nonmonetary economy is a system for allocation of goods and services without payment of money. The simplest example is the Family economics, family household. Other examples include Barter, barter economies, Gift economy, gi ...
*
Seigniorage Seigniorage , also spelled seignorage or seigneurage (), is the increase in the value of money due to money creation minus the cost of producing the additional money. Monetary seigniorage is where government bonds are exchanged for newly create ...
*
Slang terms for money Slang terms for money often derive from the appearance and features of banknotes or coins, their values, historical associations or the units of currency concerned. Within a language community, some of the slang terms vary in social, ethnic, ec ...
*
Social capital Social capital is a concept used in sociology and economics to define networks of relationships which are productive towards advancing the goals of individuals and groups. It involves the effective functioning of social groups through interper ...
*
Universal basic income Universal basic income (UBI) is a social welfare proposal in which all citizens of a given population regularly receive a minimum income in the form of an unconditional transfer payment, i.e., without a means test or need to perform Work (hu ...
*
Velocity of Money image:M3 Velocity in the US.png, 300px, Similar chart showing the logged velocity (green) of a broader measure of money M3 that covers M2 plus large institutional deposits. The US no longer publishes official M3 measures, so the chart only runs t ...
*
World currency In international finance, a world currency, supranational currency, or global currency is a currency that would be transacted internationally, with no set borders. History First European Banknotes (17th century) The first European banknotes w ...


Notes


References


Further reading

* Brzezinski, Adam; Palma, Nuno; Velde, François R. (2024). " Understanding Money Using Historical Evidence". ''Annual Review of Economics''. * Chown, John F. ''A History of Money: from AD 800'' (Psychology Press, 1994). * Davies, Glyn, and Duncan Connors. ''A History of Money'' (4th ed. U of Wales Press, 2016
excerpt
. * Ferguson, Niall. ''The Ascent of Money: A Financial History of the World'' (2009
excerpt
* Keen, Steve (February 2015)
"What Is Money and How Is It Created?"
argues, "Banks create money by issuing a loan to a borrower; they record the loan as an asset, and the money they deposit in the borrower's account as a liability. This, in one way, is no different to the way the Federal Reserve creates money ... money is simply a third party's promise to pay which we accept as full payment in exchange for goods. The two main third parties whose promises we accept are the government and the banks ... money ... is not backed by anything physical, and instead relies on trust. Of course, that trust can be abused ... we continue to ignore the main game: what the banks do (for good and for ill) that really drives the economy." ''
Forbes ''Forbes'' () is an American business magazine founded by B. C. Forbes in 1917. It has been owned by the Hong Kong–based investment group Integrated Whale Media Investments since 2014. Its chairman and editor-in-chief is Steve Forbes. The co ...
'' * Kuroda, Akinobu. ''A Global History of Money'' (Routledge, 2020)
excerpt
* * Lanchester, John, "The Invention of Money: How the heresies of two bankers became the basis of our modern economy", ''
The New Yorker ''The New Yorker'' is an American magazine featuring journalism, commentary, criticism, essays, fiction, satire, cartoons, and poetry. It was founded on February 21, 1925, by Harold Ross and his wife Jane Grant, a reporter for ''The New York T ...
'', 5 & 12 August 2019, pp. 28–31. * Schurtz, Heinrich. ''An Outline of the Origins of Money'' (University of Chicago Press, 2024). Translated and annotated, with an introduction by Enrique Martino and Mario Schmidt. Foreword by Michael Hudson
PDF
* Weatherford, Jack. ''The history of money'' (2009). by a cultural anthropologist
excerpt


External links

* * * *
"Money"
BBC Radio 4 discussion with Niall Ferguson, Richard J. Evans and Jane Humphries (''In Our Time'', Mar. 1, 2001) * {{Authority control Currency Economic anthropology Trade