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A multilateral exchange is a transaction, or forum for transactions, which involve more than two parties. For example, Alice gives Bob an apple in exchange for an orange, that is a bilateral exchange. A multilateral exchange would involve a third party, for example: Alice gives an apple to Bob who gives an orange to Charles, who gives a pear to Alice. In the real world, such transactions are spread over time, and involved items of different values, and involve many more parties. A special type of accounting is used for this, called mutual credit, or
credit clearing Credit clearing is the practice according to which a small group of banks need to make many payments to each other, of adding up the payments and cancelling them out before settling the remainder. While clearing is about waiting for the payment to ...
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Accounting

Although any accounting framework can be used, there is one approach that fits naturally for multilateral exchange. It is the simplest possible database/spreadsheet design, single-entry bookkeeping rather than double-entry bookkeeping. All accounts begin with a balance of zero, meaning they owe nothing and are owed nothing. An account may only close at zero, meaning it has given as much as it has received, i.e. that the exchange is complete with respect to all the other accounts. When a transaction happens, an entry is made in an accounting journal of a payment, or credit flowing in the opposite direction. Account balances are derived by 'adding up' the journal. The sum of all account balances is ''a priori''
zero 0 (zero) is a number representing an empty quantity. In place-value notation such as the Hindu–Arabic numeral system, 0 also serves as a placeholder numerical digit, which works by multiplying digits to the left of 0 by the radix, usuall ...
. Accounts which close (or are retired) above zero have given more value to the other accounts than they have received and vice versa. Thus a positive balance represents not value *in* the account, but value *owed* to that account by (the aggregate of) all other accounts. An account's balance in such a system, indicates not the position of the account with respect to past activities with other accounts, but also the activity needed to complete the exchange. thus a balance of +10 means that not only has the account delivered +10 more value to the other members than it has received, but that in order to complete the exchange it intends to receive +10 more in the future than it delivers. Bob's obligation to spend 5, exactly matches Charlie's obligation to earn 5.


See also

* Mutual credit *
Mutualism (economic theory) Mutualism is an anarchist school of thought and economic theory that advocates a socialist society based on free markets and usufructs, i.e. occupation and use property norms. One implementation of this system involves the establishment of ...


Further reading

* Nikaido, Hukukane
"On the classical multilateral exchange problem"
''Metroeconomica'', vol. 8, iss. 2, pp. 135-145, June 1956. * Ikeo, Aiko, ''A History of Economic Science in Japan'', Routledge, 2014 . Has extensive discussion of Nikaido's work. * Wood, John Cunningham, ''Karl Marx's Economics: Critical Assessments'', Taylor & Francis, 2004 {{ISBN, 0415065100 (reprint: first published 1988). Discusses multilateral exchange in the context of
Marxian economics Marxian economics, or the Marxian school of economics, is a heterodox school of political economic thought. Its foundations can be traced back to Karl Marx's critique of political economy. However, unlike critics of political economy, Marxian ...
, pp. 290-293. * Raymond, Ruth; Fowler, Cary
"Sharing the non-monetary benefits of agricultural biodiversity"
'' Issues in Genetic Resources'', no. 5, September 2001. Discusses multilateral exchange in the context of agricultural biodiversity. Accounting