The Risk Spectrum

Federal contract types exist on a spectrum from maximum contractor risk (firm-fixed-price) to maximum government risk (cost-plus-fixed-fee). FAR 16.103(a) requires contracting officers to select the contract type that results in reasonable contractor risk and the greatest incentive for efficient performance. The choice depends on how well the requirement is defined, the level of uncertainty involved, and the nature of the work.

Fixed-Price Contracts

Fixed-price contracts place maximum performance risk on the contractor. The government agrees to pay a set price (or a price determined by an agreed-upon formula), and the contractor bears the risk of cost overruns. If you finish under budget, you keep the savings. If you go over, you absorb the loss. Fixed-price contracts are the government's preferred type because they provide cost certainty and incentivize efficiency.

Firm-Fixed-Price (FFP)

FFP contracts provide a fixed price that is not subject to any adjustment based on the contractor's cost experience during performance. This is the simplest and most common federal contract type. The government pays the agreed price, period. FFP is appropriate when the requirement is well-defined, the contractor can accurately estimate costs, and there is minimal uncertainty.

Risk allocation: Maximum risk on the contractor. If your costs exceed your price, you lose money. If your costs are below your price, you earn a higher margin.

Practical implication: Price your FFP bids carefully. Include adequate margin for contingencies. The number one cause of contractor losses on FFP contracts is underestimating level of effort during the proposal phase.

Fixed-Price with Economic Price Adjustment (FP-EPA)

FP-EPA contracts include a fixed price with provisions for upward or downward adjustment based on specified economic conditions — typically labor cost indices, material cost indices, or actual costs of specified materials. FP-EPA is used for multi-year contracts where economic conditions may change significantly. FAR 16.203 governs these contracts.

Risk allocation: The contractor bears performance risk but is partially protected against economic conditions beyond its control (inflation, material price volatility).

Fixed-Price Incentive (FPI)

FPI contracts establish a target cost, target profit, price ceiling, and a profit adjustment formula. If the contractor's actual costs are below the target, the savings are shared between the government and the contractor according to the formula. If costs exceed the target, the overrun is similarly shared — but the contractor's total price cannot exceed the ceiling price. Above the ceiling, the contractor absorbs all costs. FAR 16.204 and 16.403 cover FPI arrangements.

Risk allocation: Shared risk below the ceiling, full contractor risk above the ceiling. This type incentivizes cost control while providing some cushion for uncertainty.

Cost-Reimbursement Contracts

Cost-reimbursement contracts pay the contractor for allowable incurred costs, to the extent prescribed in the contract, plus a fee representing profit. These contracts are used when uncertainties in contract performance do not permit costs to be estimated with sufficient accuracy to use a fixed-price type. FAR 16.301 governs cost-reimbursement contracts.

Cost-reimbursement contracts require the contractor to have an accounting system adequate for determining costs applicable to the contract — a requirement verified through a DCAA (Defense Contract Audit Agency) audit. This is a significant barrier for companies accustomed to commercial work.

Cost-Plus-Fixed-Fee (CPFF)

CPFF contracts reimburse the contractor for allowable costs plus a fixed-dollar fee that does not vary with actual costs. The fee is negotiated at the start and remains the same regardless of whether actual costs come in above or below the estimate. FAR 16.306 establishes that the fee cannot exceed 10% of estimated cost for experimental, developmental, or research work, or 6% for other work.

Risk allocation: The government bears most of the cost risk. The contractor's profit (fee) is fixed in dollar terms but has no incentive for cost control beyond the obligation to perform.

Cost-Plus-Incentive-Fee (CPIF)

CPIF contracts reimburse allowable costs plus a fee that is adjusted by formula based on the relationship of total allowable costs to total target costs. A target cost, target fee, minimum and maximum fee, and fee adjustment formula are negotiated at the start. CPIF provides a positive incentive for cost control because the contractor earns more fee when costs are lower. FAR 16.405-1 covers CPIF contracts.

Risk allocation: Shared between government and contractor, with the contractor's fee fluctuating based on cost performance. The minimum fee provides a floor.

Cost-Plus-Award-Fee (CPAF)

CPAF contracts reimburse allowable costs plus a base fee (which may be zero) and an award fee that the contractor earns based on the government's subjective evaluation of performance against criteria specified in the award fee plan. An Award Fee Board periodically evaluates performance and determines how much of the available award fee pool the contractor has earned. FAR 16.405-2 governs CPAF contracts.

Risk allocation: The government bears cost risk; the contractor's fee is at risk based on performance quality. CPAF is used when the government wants to incentivize performance factors that are difficult to quantify in advance.

Time-and-Materials (T&M) Contracts

T&M contracts pay the contractor based on fixed hourly labor rates (which include wages, overhead, general and administrative expenses, and profit) multiplied by the hours worked, plus the actual cost of materials. T&M is used when it is not possible to estimate the extent or duration of the work or to anticipate costs with any reasonable degree of confidence. FAR 16.601 governs T&M contracts.

FAR 16.601(d) requires a determination and findings (D&F) justifying that no other contract type is suitable. T&M contracts include a ceiling price that the contractor exceeds at its own risk. The government bears the risk of the number of hours, while the contractor bears the risk of performing within its fixed rates.

Risk allocation: Mixed. The contractor is protected by fixed labor rates but must manage its workforce efficiently. The government controls hours through a ceiling and task order management.

Labor-Hour Contracts

Labor-hour contracts are a variant of T&M without the materials component. The government pays fixed hourly rates for labor only. These are used for services where materials are insignificant or provided by the government. The same FAR provisions and D&F requirements that apply to T&M contracts apply to labor-hour contracts.

Indefinite-Delivery/Indefinite-Quantity (IDIQ) Contracts

IDIQ contracts are not a pricing type but a delivery method. They establish a framework for ordering an indefinite quantity of supplies or services during a fixed period of time. The contract specifies a minimum and maximum quantity (or dollar value) and the period of performance. Individual task orders or delivery orders are issued against the IDIQ throughout its life. FAR 16.504 governs IDIQ contracts.

IDIQs can use any pricing type — fixed-price, cost-reimbursement, T&M, or labor-hour — for individual orders. Many of the largest federal contracts are structured as IDIQs, including major vehicles like Alliant 2, OASIS, and CIO-SP4. Multiple-award IDIQs (MA-IDIQs) award the contract to several vendors, who then compete for individual task orders under FAR 16.505.

Minimum and Maximum Values

Every IDIQ must specify a minimum quantity or dollar value that the government is obligated to order during the contract period. This is a binding commitment. The maximum represents the ceiling that cannot be exceeded without a contract modification. In practice, the government's minimum obligation is often low (sometimes as little as $2,500 per awardee), while the ceiling can be billions of dollars.

Blanket Purchase Agreements (BPAs)

BPAs are not contracts — they are simplified acquisition tools that establish pre-negotiated terms and conditions for future purchases. An agency sets up a BPA with one or more vendors for a category of supplies or services, then issues individual purchase orders (called "calls") against the BPA as needs arise. FAR Subpart 13.303 governs BPAs.

BPAs are established against existing contracts (such as GSA Schedules) or in the open market. They are most commonly used for recurring purchases of commercial items. For small businesses, BPAs established against a GSA Schedule can provide a steady stream of low-friction orders.

Basic Ordering Agreements (BOAs)

A BOA is a written instrument of understanding between the government and a contractor that establishes terms and clauses for future contracts (orders). Unlike BPAs, BOAs are not contracts and do not obligate any funds. Each order placed under a BOA is a separate contract. BOAs are governed by FAR 16.703 and are used when a substantial number of separate contracts are anticipated and the government wants to pre-negotiate the terms.

Choosing the Right Contract Type — Practical Considerations

• Know your costs. If you cannot accurately estimate costs, do not accept a firm-fixed-price contract. You will lose money.
• Read the solicitation carefully. The contract type is specified in the solicitation. If you believe the wrong type has been selected, raise it during the Q&A period.
• Build contingency into FFP pricing. Include management reserve for risks you can identify and contingency for risks you cannot. Do not bid to the penny.
• Invest in your accounting system early. If you plan to pursue cost-reimbursement work, get your accounting system DCAA-adequate before you need it. Retroactive compliance is far more expensive.
• Understand fee structures. On cost-reimbursement contracts, your fee is your profit. Understand the statutory maximums and how incentive fees are calculated.
• T&M is a bridge, not a destination. The government prefers fixed-price. T&M contracts often convert to fixed-price once the requirement is better understood.

• What is the most common federal contract type?

  Firm-fixed-price (FFP) is the most common and preferred federal contract type. FAR 16.103 states that a firm-fixed-price contract is the preferred type when the risk involved is minimal or can be predicted with an acceptable degree of certainty. The majority of federal contract actions by count are FFP.

• What contract type has the most risk for the contractor?

  Firm-fixed-price contracts carry the most risk for the contractor because the price does not change regardless of actual costs. If the contractor underestimates costs, it absorbs the entire loss. Conversely, FFP offers the greatest profit potential if the contractor performs efficiently.

• Do I need a DCAA-compliant accounting system for all contract types?

  A DCAA-adequate accounting system is required for cost-reimbursement contracts and is practically necessary for time-and-materials contracts. Firm-fixed-price contracts do not require DCAA compliance, though the government may audit your pricing data under certain circumstances (see Truth in Negotiations Act / TINA).

• What is the difference between IDIQ and BPA?

  An IDIQ is a contract with a minimum and maximum value that obligates the government to order at least the minimum. A BPA is not a contract — it is a pre-negotiated arrangement for future purchases with no obligation to order any specific amount. IDIQs are governed by FAR 16.5; BPAs by FAR 13.303.

• Can the contract type change during performance?

  Yes, but it requires a contract modification agreed to by both parties. It is not common but does occur — for example, a T&M contract may convert to fixed-price once the scope is better understood. The change must comply with FAR requirements and be documented in the contract file.