Government Contract Types Explained

Why Contract Type Matters

The contract type defines how you get paid, how risk is shared between you and the government, and how much financial flexibility you have during performance. Choosing the wrong contract type, or failing to understand the one you are bidding on, can turn a profitable opportunity into a money-losing engagement.

The Federal Acquisition Regulation (FAR) Part 16 establishes the spectrum of contract types, ranging from firm-fixed-price (maximum risk on the contractor) to cost-plus (maximum risk on the government). The government selects the contract type based on the level of uncertainty in the requirement, the maturity of the technology, and the availability of cost data.

Beyond individual contract types, the government uses ordering vehicles like IDIQ contracts, Blanket Purchase Agreements, and GWACs to streamline repeated purchases. If you do not understand both the pricing mechanism and the ordering vehicle, you will misprice your bids or miss how agencies actually buy what you sell.

Firm-Fixed-Price (FFP)

A firm-fixed-price contract sets a total price that does not change regardless of the contractor's actual costs. If you complete the work for less than the agreed price, you keep the difference as profit. If your costs exceed the price, you absorb the loss. The government prefers FFP contracts because they provide maximum cost certainty and minimal administrative oversight.

When it is used: FFP contracts are appropriate when the scope of work is clearly defined, the technology is mature, and historical cost data exists. They are the default contract type for commercial items, construction, and well-understood services. The FAR requires agencies to use FFP contracts to the maximum extent practicable.

Risk allocation: The contractor bears virtually all cost risk. If you underestimate the effort, there is no mechanism to recover additional costs from the government.

Pros: Maximum profit potential if you can deliver efficiently. Minimal government oversight of your costs. Simple administration. Fastest payment processing.

Cons: You bear all cost overrun risk. Requires accurate cost estimation. Scope changes through modifications can be contentious if not carefully managed.

A variant, the Fixed-Price-Incentive (FPI) contract, establishes a target cost, target profit, ceiling price, and a share ratio. If actual costs come in below the target, the contractor earns a larger profit. If costs exceed the target, profit decreases. The ceiling price caps the government's total obligation.

Time & Materials (T&M)

Under a time-and-materials contract, the government pays you at fixed hourly labor rates plus the actual cost of materials. There is no fixed total price, and the government pays based on hours worked. T&M contracts include a ceiling price that the contractor cannot exceed without authorization.

When it is used: T&M contracts are used when the government cannot define the scope precisely enough for a fixed-price contract. Common applications include IT staff augmentation, equipment maintenance where the extent of repairs is unknown, and engineering studies where the level of effort depends on findings.

Risk allocation: Risk is shared. The government bears the risk of cost uncertainty (hours may exceed expectations), while the contractor bears the risk of the fixed hourly rates being sufficient to cover costs and generate profit.

Pros: Less estimation risk than FFP for uncertain scope. Predictable per-hour revenue. Allows flexibility to adjust effort as requirements become clearer.

Cons: The fixed hourly rate must cover all costs: salary, benefits, overhead, G&A, and profit. If your burdened rates are wrong, you lose money on every hour worked. Government scrutiny of hours worked adds administrative overhead. The ceiling price limits total revenue.

A closely related type is the Labor-Hour (LH) contract, which is identical to T&M except that no materials are included; only labor at fixed hourly rates.

Cost-Plus-Fixed-Fee (CPFF)

Under a CPFF contract, the government reimburses all allowable costs the contractor incurs during performance, plus a fixed fee (profit) that does not vary with actual costs. The fee is negotiated at contract award as a fixed dollar amount.

When it is used: CPFF contracts are used for research and development, studies, and other work where costs are highly uncertain. They are common in defense R&D, scientific research, and early-stage technology development. SBIR/STTR contracts frequently use the CPFF structure.

Risk allocation: The government bears almost all cost risk. The contractor is reimbursed for allowable costs regardless of whether they exceed the original estimate. However, the contractor must comply with federal cost accounting standards and may not charge unallowable costs (such as entertainment, lobbying, or fines).

Pros: Minimal cost risk for the contractor. Guaranteed fee regardless of cost outcomes. Allows focus on technical quality rather than cost control.

Cons: Requires an accounting system compliant with FAR Part 31 and potentially CAS (Cost Accounting Standards). Significant government oversight and audit exposure. Fee percentages are typically capped at 10% for R&D and 7% for other work. Slower payment processing due to cost reimbursement mechanics.

Cost-Plus-Incentive-Fee (CPIF)

A CPIF contract reimburses allowable costs and provides a fee that adjusts based on the relationship between actual costs and a target cost. The contract establishes a target cost, target fee, minimum and maximum fees, and a fee adjustment formula (share ratio).

When it is used: CPIF contracts are used for large, complex efforts where cost uncertainty is significant but the government wants to incentivize efficient performance. Common in major defense acquisition programs, large systems integration projects, and complex construction.

Risk allocation: Risk is shared according to the share ratio. A typical 80/20 share ratio means the government bears 80% and the contractor bears 20% of any cost overrun or underrun relative to the target. The minimum and maximum fee boundaries cap the contractor's downside and upside.

Pros: Incentivizes cost efficiency while protecting against catastrophic overruns. Can yield higher profit than CPFF if performance is strong.

Cons: Complex to administer. Requires sophisticated cost tracking. Share ratio negotiations can get contentious. Same accounting system requirements as CPFF.

Cost-Plus-Award-Fee (CPAF)

A CPAF contract reimburses allowable costs and provides a fee consisting of a base fee (usually small or zero) plus an award fee pool. The award fee is determined by the government based on a subjective evaluation of the contractor's performance during defined evaluation periods.

When it is used: CPAF contracts are used when the government wants maximum flexibility to incentivize quality, timeliness, and innovation beyond simple cost control. Common in long-term service contracts, operations and maintenance, and programs where performance quality is difficult to measure objectively.

Risk allocation: Cost risk is primarily on the government (costs are reimbursed). Fee risk is on the contractor; the award fee is entirely at the government's discretion, and there is no appeal of the fee determination.

Pros: Potential for high fees if performance is exceptional. Encourages innovation and quality. Costs are reimbursed.

Cons: Award fee is subjective; the government has sole discretion. Requires regular performance reviews and evaluations. The base fee may be zero, creating significant fee uncertainty. Same accounting system requirements as other cost-type contracts.

Indefinite Delivery/Indefinite Quantity (IDIQ)

An IDIQ contract is not a standalone pricing type but an ordering vehicle. It establishes a framework under which the government can issue individual task orders (for services) or delivery orders (for supplies) over a specified period. Each order can be FFP, T&M, or cost-type.

When it is used: IDIQs are used when the government knows it will need recurring services or supplies but cannot determine the exact quantities or timing in advance. They are ubiquitous in IT services, professional services, and facilities maintenance. For a deeper dive, see our IDIQ contracts guide.

IDIQ contracts have a minimum guarantee (the minimum dollar amount the government promises to order) and a maximum ceiling (the total the government can order without a new competition). Multiple companies typically hold the same IDIQ contract (a "multiple-award IDIQ"), and they compete for individual task orders.

Pros: Provides a long-term revenue stream. Once on an IDIQ, you compete only against other IDIQ holders rather than the entire market. Multiple orders can be issued over the contract period (often 5 to 10 years).

Cons: Winning the IDIQ is only the first step; you must then compete for and win task orders. The minimum guarantee may be as low as $2,500. IDIQ bid and proposal costs can be high relative to the guaranteed return.

Blanket Purchase Agreements (BPA)

A BPA is a simplified ordering agreement, not technically a contract. It establishes pricing and terms for repeated purchases of specific goods or services, allowing the government to place orders quickly without going through the full solicitation process each time.

When it is used: BPAs are used for recurring, predictable purchases such as office supplies, IT equipment, temporary staffing, and maintenance services. They are often established under GSA Schedule contracts.

Pros: Streamlined ordering process. Can generate consistent, recurring revenue. Lower administrative burden than individual contracts.

Cons: No guaranteed minimum order quantity. Individual call orders are typically small. The government can establish BPAs with multiple vendors and rotate among them.

Government-Wide Acquisition Contracts (GWACs)

GWACs are multi-agency, multiple-award IDIQ contracts built specifically for information technology. GSA or NASA administers them, and any federal agency can issue task orders for IT products and services through them.

Major GWACs include Alliant 2 (large business), 8(a) STARS III (8(a) small business), VETS 2 (SDVOSB), and Polaris (small business). These vehicles collectively channel tens of billions of dollars in annual IT spending.

Pros: Access to task orders from any federal agency. Strong brand recognition; holding a GWAC signals technical and organizational maturity. Long contract periods (often 10 years with options).

Cons: Extremely competitive to win. Significant bid and proposal investment. Once on a GWAC, you still must compete for individual task orders against other holders.

Choosing the Right Contract Type

As a contractor, you typically do not choose the contract type; the government selects it based on the nature of the requirement. However, understanding the contract type is critical to your bid/no-bid decision and pricing strategy.

If you are new to government contracting, start with FFP and T&M contracts. They do not require a CAS-compliant accounting system and have simpler administrative requirements. Cost-type contracts require an accounting system that can segregate costs by contract and comply with FAR Part 31 cost principles -- a real investment for a small business to set up.

When evaluating opportunities, consider the contract type alongside other factors: Does your accounting system support this contract type? Can you accurately estimate costs for FFP? Are your hourly rates competitive for T&M? Do you have the working capital for cost-reimbursement contracts (where you incur costs before being reimbursed)?

Browse opportunities on Drexault to see how different contract types appear in real solicitations, and use our bidding guide to prepare your proposal regardless of the contract type.