A cost-plus contract, also termed a cost plus contract, is a
contract
A contract is an agreement that specifies certain legally enforceable rights and obligations pertaining to two or more parties. A contract typically involves consent to transfer of goods, services, money, or promise to transfer any of thos ...
such that a contractor is paid for all of its allowed expenses, ''plus'' an additional
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 ...
to allow for risk and incentive sharing.
[Cost-Plus Contracts]
Center for Strategic and International Studies
The Center for Strategic and International Studies (CSIS) is an American think tank based in Washington, D.C. From its founding in 1962 until 1987, it was an affiliate of Georgetown University, initially named the Center for Strategic and Inte ...
Cost-reimbursement contracts contrast with
fixed-price contract
A fixed-price contract is a type of contract for the supply of goods or services, such that the agreed payment amount will not subsequently be adjusted to reflect the resources used, costs incurred or time expended by the contractor. This contract ...
s, in which the contractor is paid a negotiated amount regardless of incurred expenses.
History
Frank B. Gilbreth, one of the early developers of industrial engineering, used "cost-plus-a-fixed sum" contracts for his building contracting business.
He described this method in an article in ''Industrial Magazine'' in 1907, comparing it to
fixed price
A fixed price is a price designated for a good or a service that is neither subject to bargaining nor bartering. The price may be fixed since the seller has placed it, or given that the price is managed by the authorities under price regulati ...
and
guaranteed maximum price methods.
Cost-plus contracts were first used by the government in the United States during
World War I
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
to encourage wartime production by American businesses.
[Musicus, R.]
Cost-plus-a-percentage-of-cost System of Contracting
''St. John's Law Review'', Volume 19, November 1944, Number 1, page 27, accessed on 22 August 2024 According to Martin Kenney, they "allowed what were then small technology firms like
Hewlett-Packard
The Hewlett-Packard Company, commonly shortened to Hewlett-Packard ( ) or HP, was an American multinational information technology company. It was founded by Bill Hewlett and David Packard in 1939 in a one-car garage in Palo Alto, California ...
and
Fairchild Semiconductor
Fairchild Semiconductor International, Inc. was an American semiconductor company based in San Jose, California. It was founded in 1957 as a division of Fairchild Camera and Instrument by the " traitorous eight" who defected from Shockley Semi ...
to charge the
Department of Defense
The United States Department of Defense (DoD, USDOD, or DOD) is an executive department of the U.S. federal government charged with coordinating and supervising the six U.S. armed services: the Army, Navy, Marines, Air Force, Space Force, ...
for the price of research and development that none could pay on its own. This enabled the firms to create technology products that eventually created entire new markets and economic sectors".
Types
There are four general types of cost-reimbursement contracts, all of which pay every allowable, allocatable, and reasonable cost incurred by the contractor, plus a fee or profit which differs by contract type.
*Cost plus a fixed-fee (CPFF) contracts pay costs plus a pre-determined fee that was agreed upon at the time of contract formation.
*
Cost-plus-incentive fee (CPIF) contracts have a larger fee awarded for contracts which meet or exceed certain performance goals, for example being on schedule and any cost savings.
*Cost-plus-award fee (CPAF) contracts pay a fee based upon the contractor's product. An aircraft development contract, for example, may pay award fees if the contractor's product achieves certain speed, range, or payload capacity goals. For some contracts, the award fee is determined subjectively by an awards fee board whereas for others the fee is based upon objective performance metrics.
*Cost plus percentage of cost contracts pay a fee that increases as the contractor's cost increases. Because this contract type provides a disincentive for the contractor to control costs it is rarely used by government, although it is prevalent in private industry. Federal legislation in the 1940s excluded use of this type of contract in various defense projects,
and the U.S.
Federal Acquisition Regulations
The Federal Acquisition Regulation (FAR) is the principal set of rules regarding Government procurement in the United States. The document describes the procedures executive branch agencies use for acquiring products and services. FAR is part o ...
specifically prohibit the use of this type for U.S. Federal Government contracting and in federal sub-contracts except firm fixed price ones (FAR Part 16.102). The US
Comptroller General has also found that where the additional element is not expressed as a percentage but as an additional amount which rises in bandings in line with the contractor's cost increases may effectively constitute a "cost plus percentage of cost" contract and therefore fall within the prohibition.
Usage
A cost-reimbursement contract is appropriate when it is desirable to shift some
risk
In simple terms, risk is the possibility of something bad happening. Risk involves uncertainty about the effects/implications of an activity with respect to something that humans value (such as health, well-being, wealth, property or the environ ...
of successful contract performance from the contractor to the buyer. It is used most commonly when the item purchased cannot be defined explicitly, as for
research and development
Research and development (R&D or R+D), known in some countries as OKB, experiment and design, is the set of innovative activities undertaken by corporations or governments in developing new services or products. R&D constitutes the first stage ...
, or for cases where there is not enough data to estimate the final cost accurately. A cost-plus contract is often used when performance, quality or delivery time is a much greater concern than cost, such as in the
United States space program.
Cost plus contracting was expanded to include services such as engineering, consulting, and a variety of other such efforts in the 1980's.
[Federal Acquisition Regulations Subpart 16.3—Cost-Reimbursement Contracts](_blank)
U. S. General Services Administration
Recent
Between 1995 and 2001 fixed fee cost-plus contracts constituted the largest subgroup of cost-plus contracting in the U.S. defense sector. Starting during 2002 award-fee cost plus contracts became more numerous than fixed fee cost plus contracts.
The distribution of annual contract values by sector category and award types indicates that cost plus contracts in the past had the largest importance in research, followed by services and products. In 2004, however, services replaced research as the dominant sector category for cost-plus contracts. For all other contract types combined the relative ranking is reversed to the original cost-plus order, meaning that products are most numerous, followed by service and research.
With cost-plus contracting being designed primarily for research and development, cost plus contracts were used in many different efforts unrelated to research and development. The percentage of cost-plus contracting within a contract is expected to be correlated to the percentage share of research undertaken in any given program. However, several programs, such as the
Lockheed Martin F-35 Lightning II
The Lockheed Martin F-35 Lightning II is an American family of single-seat, single-engine, supersonic Stealth aircraft, stealth strike fighters. A multirole combat aircraft designed for both Air superiority fighter, air superiority and att ...
,
UGM-133 Trident II
The UGM-133A Trident II, or Trident D5 is a submarine-launched ballistic missile (SLBM), built by Lockheed Martin Space in Sunnyvale, California, and deployed with the United States Navy and Royal Navy. It was first deployed in March 1990, an ...
,
CVN-68, and the
CVN-21 deviate from this pattern by continuing to make extensive usage of cost-plus contracting despite the programs being subsequent to the research and development state.
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...
experienced significant cost and delivery delays on some cost-plus contracts contributing to delays of some
Space Launch System
The Space Launch System (SLS) is an American Super heavy-lift launch vehicle, super heavy-lift Expendable launch system, expendable launch vehicle used by NASA. As the primary launch vehicle of the Artemis program, Artemis Moon landing progra ...
launches.
Advantages
* A cost-type contract can be used where technical requirements and specifications are very general, vague, uncertain or unknown, or circumstances do not allow the requiring organization to define its requirements sufficiently to allow for a fixed-price type contract, or uncertainties involved in contract performance do not permit costs to be estimated with sufficient accuracy to use any type of fixed-price contract.
* Final cost may be less than for a
fixed price contract
A fixed-price contract is a type of contract for the supply of goods or services, such that the agreed payment amount will not subsequently be adjusted to reflect the resources used, costs incurred or time expended by the contractor. This contract ...
due to lower
risk premium
A risk premium is a measure of excess return that is required by an individual to compensate being subjected to an increased level of risk. It is used widely in finance and economics, the general definition being the expected risky Rate of retur ...
, especially when the ability to estimate costs is low.
* Allows more oversight and control of the quality of the contractor's work.
* Flexible, allowing for changes of specification within the contractual scope of work.
Criticism
* There is limited certainty as to what the final cost will be.
* Requires additional oversight and administration to ensure that only permissible costs are paid and that the contractor is exercising adequate overall cost controls. Ensuring that costs claimed are consistent with the cost accounting rules of doing business with the government can increase the cost of oversight and audits. The government delaying final payment for closeout of the contract can increase the ultimate cost of a contract because of the ability of a provider to bill for increased overhead and general and administrative costs, increased wages, and many other costs which can be passed on to the government.
* The withholding of funds which is required under the rules governing cost plus contracting can increase the cost of the contract.
* Under a cost plus a fixed-fee contract, the profit element does not vary with costs and there is no incentive for contractors to control costs.
* Incentives which share the risk between government and contractor lead less efficient contractors to underestimate their target costs in order to maximize their profits from actual costs. This
perverse incentive
The phrase "perverse incentive" is often used in economics to describe an incentive structure with undesirable results, particularly when those effects are unexpected and contrary to the intentions of its designers.
The results of a perverse in ...
reduces the ability of the government to distinguish between efficient and inefficient contractors.
*In a 1992 UK
legal case
Legal proceeding is an activity that seeks to invoke the power of a tribunal in order to enforce a law. Although the term may be defined more broadly or more narrowly as circumstances require, it has been noted that " e term ''legal proceedings'' ...
, ''Laserbore Ltd. v Morrison Biggs Wall Ltd.'', "cost of labour, plant and materials plus a reasonable percentage for profit" was put forward as one way of calculating payment due to the sub-contractor where there was a dispute as to what was stipulated under the contract. Judge Bowsher QC ruled that such a "cost-plus" approach was an incorrect method for calculating payment due and a method based on general
market rate
The market rate (or "going rate") for goods or services is the usual price charged for them in a free market. If demand goes up, manufacturers and laborers will tend to respond by increasing the price they require, thus setting a higher market rate ...
s payable for work similar to the disputed action was a more appropriate approach.
Laserbore Limited v Morrison Biggs Wall Limited: Queen's Bench Division (Official Referee's Business)
published on 25 August 1993, accessed on 25 March 2025
See also
*Cost engineering
Cost engineering is "the engineering practice devoted to the management of project cost, involving such activities as estimating, cost control, cost forecasting, investment appraisal and risk analysis". "Cost Engineers budget, plan and monitor inv ...
*Cost-plus pricing
Cost-plus pricing is a pricing strategy by which the selling price of a product is determined by adding a specific fixed percentage (a " markup") to the product's unit cost. Essentially, the markup percentage is a method of generating a particular ...
References
External links
The Federal Procurement Data System
The central repository for U.S. Government contract information.
{{Contract types
Business terms
Contract law
Pricing
Procurement