Types of government contracts: fixed price, cost, and T&M

If you sell products or services to the public sector, the type of contract you sign is not just a legal detail. It defines how you get paid, who absorbs cost overruns, and what reporting you owe the contracting officer every month. Two contracts for essentially the same work can create very different financial outcomes for your company depending on whether they are structured as fixed price, cost reimbursement, or time and materials.

Federal government contracts are governed by the Federal Acquisition Regulation (FAR), particularly Part 16, which lays out the rules for how contracting officers select and structure contract types. State and local agencies often follow similar frameworks, though terminology and thresholds vary. Regardless of the level of government you work with, the core logic is the same: contract type allocates risk between the government and the contractor, and it dictates how tightly you need to manage cost data, deliverables, and deadlines after award.

This guide is written for the vendor side. If you are a business development lead, operations manager, or finance director at a company of 10 to 200 staff, this covers what you need to understand before signing a government contract. The four primary families of government procurement contract types covered here are:

• Fixed price contracts (including firm fixed price and fixed price incentive contracts)
• Cost reimbursement contracts (cost-plus structures like CPFF, CPIF, and CPAF)
• Time and materials and labor hour contracts
• Indefinite Delivery / Indefinite Quantity (IDIQ) contracts

We also cover incentive and award-based structures, provide a comparison table, and walk through what each type means for post-award management. By the end, you will know what to look for in a proposed contract and how to track the obligations that come with it.

Key takeaways

• Government contract types determine how you get paid, who carries cost risk, and what reporting and compliance obligations you must meet throughout the contract period.
• Firm fixed price contracts are the most common type of federal government contract, accounting for roughly 58% of federal procurement spending, and place most cost risk on the contractor.
• Cost reimbursement contracts, time and materials contracts, and IDIQ contracts each require progressively tighter tracking of ceilings, hours, task orders, and allowable costs.
• Incentive contracts tie your profit to measurable outcomes like cost control, schedule adherence, or technical performance, requiring robust internal reporting.
• Tools like Contracko help vendors track obligations, option periods, ceiling values, and renewal dates across all government contract types from a single dashboard.

1. Fixed price government contracts

Fixed price contracts are the simplest category to understand and the most common in government procurement. The government agrees to pay a set price for a defined scope of work, and that price does not change based on what it actually costs you to deliver. If your actual costs come in lower than expected, you keep the difference as profit. If they come in higher, you absorb the loss.

This structure creates reasonable contractor risk when scope is well defined and you can estimate costs accurately. The government prefers fixed price contracts because they provide budget certainty and reduce the administrative burden of monitoring contractor costs. According to federal contracting data, fixed price contracts represented about 58.2% of all federal procurement spending as of 2023, making them the dominant contract type across most government agencies. Most government contracts for standard products, commercial services, and construction fall into this family.

A practical example: a company wins a 2026 municipal IT equipment upgrade contract awarded as a firm fixed price deal at $420,000. It delivers the hardware and installation on schedule. If internal costs turn out to be $385,000, the vendor pockets the $35,000 difference. If supply chain problems push costs to $460,000, the vendor eats the $40,000 overrun.

Key pros and cons for vendors:

• Predictable revenue: you know exactly what you will be paid, which simplifies cash flow planning
• Profit upside: efficient performance directly increases your margin
• Estimation risk: inaccurate cost estimates can turn a profitable contract into a loss
• Limited flexibility: scope changes require formal contract modifications, which can be slow
• Milestone tracking is essential: late deliveries can delay payments or trigger penalties

For vendors working fixed price contracts, tracking delivery milestones and acceptance dates is the most important post-award discipline. Contracko can extract these terms automatically and set reminders so nothing slips.

Firm fixed price (FFP)

A firm fixed price contract is the purest form of fixed price: a price that does not change regardless of the contractor's actual labor or material costs. There are no adjustments, no sharing of savings or overruns. The number on the contract is the number you get paid.

FFP is used across DoD, GSA, and state and local agencies for standard products and repeatable services where scope is stable and fair and reasonable prices can be determined through competition. The typical structure includes a statement of work, a fixed total price, and a payment schedule tied to milestones or a single lump sum on completion.

Vendor obligations are straightforward: deliver on spec, deliver on time, and manage the budget internally. If raw material prices spike or a subcontractor takes longer than planned, the vendor handles it internally. The government has no visibility into, and no obligation regarding, the vendor's internal contract costs.

Contracko can extract and analyze FFP terms with AI from uploaded contract PDFs and automatically set reminders for key milestones and the final delivery or acceptance deadline. That keeps the critical dates in a firm fixed price contract visible to the whole team.

Fixed price with economic price adjustment (FPEPA)

A fixed price contract with economic price adjustment is still a fixed price deal, but it includes a clause allowing limited price adjustments tied to inflation indexes or documented changes in material costs. The adjustments are not discretionary. They are tied to specific, pre-agreed benchmarks written into the contract.

Agencies use FPEPA for multi-year supply contracts where inflation or commodity volatility could materially affect costs. For example, a contract running from 2026 to 2029 for recurring delivery of specialized components might include an economic price adjustment clause tied to the Producer Price Index or a specific commodity index. Common adjustment bases include labor rate indexes, commodity indexes, and published catalog price lists.

For vendors, the critical task is knowing when adjustment windows open and what documentation is needed to trigger a price change. Miss the window, and the vendor may be stuck with the original price for another year. Contracko can flag economic price adjustment clauses during AI analysis and remind users before adjustment deadlines, so vendors do not leave money on the table because of a missed filing date.

Fixed price incentive (FPI)

Fixed price incentive contracts add a layer of complexity. The government and contractor agree on a target cost, a target profit, a fixed ceiling price, and a share ratio that determines how savings or overruns are split. The final price adjusts based on where actual costs land relative to the target.

Here is how the mechanics work: if actual costs come in below the target cost, the contractor and the government share the savings according to the agreed ratio (for example, 70/30), and the contractor's profit increases. If costs exceed the target, both sides share the overrun, again per the ratio, but only up to the ceiling price. Beyond the ceiling price, the contractor bears 100% of additional costs. This point, sometimes called the point of total assumption, is where the contract effectively becomes a firm fixed price deal at the ceiling.

Consider a defense production contract with a target cost of $5 million, target profit of $500,000, and a ceiling price of $6 million at a 70/30 share ratio. If the vendor delivers for $4.5 million, it keeps $500,000 in target profit plus 30% of the $500,000 savings ($150,000), for a total profit of $650,000. If costs hit $5.8 million, profit shrinks, and above the ceiling, every additional dollar comes out of the vendor's pocket.

Vendors must tightly track costs against the target cost throughout the contract. Contracko users should store the target cost, ceiling price, share ratio, and cost-reporting due dates as custom fields with reminders, so financial surprises are caught early rather than at closeout.

2. Cost reimbursement (cost-plus) contracts

Cost reimbursement contracts flip the risk equation. Instead of locking in a price, the government reimburses the contractor's allowable costs incurred during performance, up to a funding ceiling, plus a negotiated fee. The cost risk largely sits with the government, but the administrative and compliance burden sits squarely with the vendor.

These contracts are widely used for research and development contracts, complex IT programs, and early-stage prototypes where costs genuinely cannot be estimated with enough accuracy to set a fixed price. The tradeoff is significant: the vendor is less likely to lose money on cost overruns, but must maintain an accounting system capable of separating direct costs, indirect costs, overhead, and unallowable expenses in compliance with cost accounting standards and FAR Part 31. Regular invoices showing labor, overhead, and materials are standard, and audits are common.

The main cost reimbursement types include cost contracts, cost sharing contracts, cost plus fixed fee, cost plus incentive fee, and cost plus award fee. Each has a different profit structure and a different set of reporting obligations. Recent policy commentary indicates that federal agencies face increasing pressure to justify cost-type contracts and to prefer fixed price where feasible, but cost reimbursement remains essential for work where scope is genuinely uncertain.

Cost contract and cost-sharing contract

A pure cost contract reimburses the contractor for allowable costs only, often with no separate fee. This structure is commonly used when the contractor is a university, nonprofit, or research institution performing research and development work where profit is not the primary motivation.

A cost sharing contract is a variation where the government only reimburses an agreed upon portion of costs, and the contractor funds the rest. The logic is that the contractor expects to benefit commercially from the work, whether through intellectual property, future product sales, or technical capabilities gained during the project. These contracts are common for long-term R&D and pilot programs.

Vendors working under either structure must track reimbursable and non-reimbursable costs separately. Contracko can store contract dates, ceilings, and reporting obligations for the government-funded portion of a cost sharing contract, keeping finance teams clear on what is billable and what is not.

Cost plus fixed fee (CPFF)

Cost plus fixed fee is the most common cost reimbursement structure. The government pays all allowable costs plus a fixed fee, expressed as a fixed dollar amount, that does not change regardless of whether actual costs come in above or below the estimated cost. The fee is typically calculated as a percentage of estimated cost during negotiation but then locked as a fixed amount at award, subject to statutory caps.

CPFF is attractive when technical risk is high and neither party can confidently set a fixed price. The contractor knows it will recover costs (assuming they are allowable and within the ceiling) and earn a predictable negotiated fee. The government accepts cost uncertainty in exchange for getting work done that would otherwise be too risky to price firmly.

What vendors must monitor closely:

• Cumulative costs approaching the funding ceiling
• Burn rate versus schedule (spending faster than planned)
• Notification thresholds, typically at 75% to 85% of funding, where the contracting officer must be alerted
• Classification of every expense as allowable or unallowable under FAR Part 31

Using Contracko as a contract obligations tracker lets vendors set alerts when incurred costs hit predefined thresholds of the ceiling amount, avoiding the unpleasant surprise of running out of funding mid-performance.

Cost plus incentive fee (CPIF)

A cost plus incentive fee contract reimburses allowable costs and adjusts the fee based on how actual costs compare to a target cost, following a pre-negotiated formula. The structure includes a target cost, a target fee, a minimum and maximum fee, and a share ratio.

For example: target cost of $1 million, target fee of $100,000, share ratio of 80/20 (government/contractor) on savings or overruns, minimum fee of $50,000, maximum fee of $140,000. If the vendor delivers for $900,000, the $100,000 savings is split 80/20, and the fee rises by $20,000 to $120,000. If costs hit $1.1 million, the $100,000 overrun is shared, and the fee drops by $20,000 to $80,000. The minimum and maximum fee boundaries cap exposure in either direction.

CPIF rewards cost control and penalizes overruns, but still reimburses allowable costs up to the ceiling. Unlike cost plus award fee (discussed next), the financial formulas are objective and pre-agreed rather than subjective. Performance reporting is essential, but profit or fee incentives are calculated mechanically based on necessary cost data.

Contracko users should store target cost, fee range, and share ratio in custom fields and monitor actual cost data through integrated reports so leadership can see fee trajectory at any point during the contract.

Cost plus award fee (CPAF)

Cost plus award fee contracts add a subjective element. The government reimburses allowable costs and provides a base fee (sometimes zero), plus a potential award fee earned based on periodic evaluation of the contractor's performance. A fee determining official assesses performance against criteria like quality, schedule, cost control, and customer satisfaction, then decides how much of the available award fee pool to grant.

The usual structure is: base fee plus an award fee pool evaluated quarterly, semi-annually, or annually. The evaluation criteria are documented in an award fee plan attached to the contract. Performance ratings typically map to percentage ranges of the pool (for example, "excellent" earns 91% to 100%, "satisfactory" earns 50% to 70%).

The risk for vendors is clear: total profit is uncertain because award fee decisions are periodic and discretionary. A vendor might deliver strong work and still receive a lower-than-expected award fee if the government's priorities shift or if documentation of performance is thin.

Vendors must track award fee evaluation periods, criteria, and schedules carefully, and align internal performance and documentation to the specific metrics the government will evaluate. Contracko can store award fee plans as attachments and set reminders ahead of each evaluation meeting, so teams have time to compile evidence and prepare.

3. Time and materials (T&M) and labor hour contracts

Time and materials contracts occupy a middle ground between fixed price and cost reimbursement. The government pays fixed hourly labor rates (which include wages, overhead, and profit) plus actual material costs, usually up to a not-to-exceed ceiling. This structure is used when scope is uncertain and neither a fixed price nor a cost reimbursement structure fits cleanly.

Because T&M shifts some financial risk for inefficient performance toward the government, regulations require agencies to justify their use and maintain close oversight. Government agencies typically reserve time and materials contracts for situations where precise scope or level of effort cannot be determined upfront, such as IT support, consulting, field maintenance, and emergency repairs.

Vendors must maintain detailed timekeeping by labor category, along with material invoices and receipts to support billing. Actual material costs must be documented and reasonable. Agencies are required to establish a ceiling to limit exposure, and the contracting officer monitors spending closely.

Labor hour contracts are a variant without materials. Only labor hours are billable, typically used for advisory services, program management support, and on-site staffing where materials are minimal or supplied by the government.

Time and materials contracts

A T&M contract pays by pre-negotiated hourly rates covering wages, overhead, and profit, plus actual materials at cost or with a small handling fee. The rates are "fixed" in the sense that they are agreed at award and do not change during the contract period, but total cost depends entirely on how many hours are worked and what materials are consumed.

Consider a two-year county IT helpdesk contract where analysts are billed at $85 per hour with a total ceiling of $500,000. If the helpdesk handles fewer tickets than expected, total billings stay well below the ceiling. If ticket volume spikes, spending approaches the limit, and additional funding or a contract modification may be needed.

Vendor risks and responsibilities include:

• Staying within the not-to-exceed amount
• Tracking hours by labor category with supporting timesheets
• Providing backup documentation for each invoice
• Managing efficiency, because the government can (and will) question hours that seem excessive

T&M contracts are attractive for vendors starting with government work because cost risk is lower than firm fixed price. Revenue, however, depends on actual hours worked, so there is no guaranteed minimum unless the contract specifies one.

Contracko can store the ceiling, labor rate table, and key reporting clauses, and trigger alerts as the billed amount approaches the limit. This is particularly useful for service contracts where multiple team members bill under different labor categories, and where teams want comprehensive contract management features without adding administrative overhead.

Labor hour contracts

Labor hour contracts work identically to T&M except there are no separate materials line items. Only labor hours are billable. Common use cases include advisory services, program management support, and on-site staffing where the government provides all equipment and materials.

Agencies still require a ceiling and regular monitoring due to the risk of overuse of hours. The contracting officer wants confidence that the hours billed are productive and necessary, so detailed timesheets and task descriptions are standard requirements.

Vendors should track total hours per labor category, per month, and per option year to avoid exceeding the ceiling or key thresholds. Contracko users can create custom fields for each labor category ceiling and use dashboard views to monitor burn rates across multiple labor hour contracts simultaneously, following a solid contract tracking guide approach.

4. Indefinite delivery / indefinite quantity (IDIQ) contracts

IDIQ contracts are the most commonly misunderstood structure in government procurement. An IDIQ is not a single contract for a single project. It is a master agreement that sets terms, conditions, labor rates, and a maximum ceiling value. The actual work, and the actual revenue, comes through individual task orders (for services) or delivery orders (for supplies) issued under the vehicle over its life.

The government is not committed to a specific quantity or dollar value until it places an order. At award, the IDIQ includes a minimum guarantee (often a small amount, sometimes as low as $2,500) that the government promises to order. Everything above that minimum is discretionary. Each task order can carry its own contract type: one order might be firm fixed price, another might be time and materials, and a third might be cost reimbursement. Vendors must read each order's pricing terms carefully because the risk profile changes order by order.

Many governmentwide acquisition contracts (GWACs) and large agency vehicles are structured as IDIQs. In FY 2024, approximately $74.8 billion in federal spending flowed through GWAC and IDIQ vehicles, representing about 9.5% of total federal contract obligations. Well-known examples include OASIS+ (GSA's professional services IDIQ), Alliant 3 (enterprise IT), and the GSA Multiple Award Schedule program. State cooperative contracts and blanket purchase agreement structures often follow similar logic.

A practical example: a company wins a position on a five-year IDIQ for engineering services with a $10 million ceiling. Over those five years, federal agencies issue separate task orders for specific projects, each with its own scope, budget, and performance period. Total revenue depends on how many orders the vendor wins and delivers, not on the ceiling value itself.

Single-award vs multiple-award IDIQs

A single-award IDIQ means one vendor holds the vehicle and receives all orders that arise within the scope during the contract period. This is simpler to manage but less common for large vehicles.

Multiple award contracts, where several vendors hold positions on the same IDIQ, are more typical. Agencies compete individual task or delivery orders among the holders, giving the government continued competition and flexibility. Roughly 60% of IDIQ obligations still flow through single-award contracts, but multiple-award vehicles dominate the large GWAC landscape.

For vendors on a multiple-award IDIQ, the work does not stop at winning a seat. Vendors must actively manage a pipeline of task order opportunities, respond to fair opportunity notices, and track wins and losses over many years. Each order has its own period of performance, funding amount, and contract type.

Contracko can link each task order to its parent IDIQ record so teams see total ceiling usage, individual order status, and upcoming option periods in one dashboard. This is essential for effective contract management and procurement across large portfolios, especially for purchasing and procurement teams that manage many supplier and subcontractor agreements.

Requirements and definite-quantity contracts

Requirements contracts are arrangements where the government commits to buy all of its actual requirements for a product or service from a single contractor during the term. The quantity depends entirely on the agency's actual need, which may fluctuate significantly year to year.

Definite-quantity contracts fix the total quantity upfront but spread delivery dates across the contract period via delivery orders. The entire contract quantity is committed, but the timing of when specific lots are delivered remains flexible.

Both behave similarly to IDIQs in daily management, with multiple delivery orders and recurring invoices over several years. Vendors should track cumulative quantities delivered versus committed quantities and any minimum or maximum thresholds.

Contracko custom fields and its centralized contract repository can capture minimum, maximum, and actual usage so finance teams can forecast revenue accurately and avoid surprises when a prime contractor or agency adjusts ordering patterns.

5. Incentive and award-based contracts

Incentive contracts are designed to motivate efficient and economical performance by tying a contractor's profit or fee to measurable outcomes. The incentive can be based on cost performance, schedule adherence, technical achievement, or any combination. Various incentive contracts exist across both the fixed price and cost reimbursement families.

In the federal context, incentive contracts can be structured as fixed price incentive contracts (covered in section 1) or cost reimbursement incentive contracts such as cost plus incentive fee and cost plus award fee (covered in section 2). The common thread is that the vendor's total compensation depends on hitting specific targets, not just completing the work.

Typical metrics include delivery ahead of schedule, meeting reliability or availability targets, achieving specific cost savings over baseline, or demonstrating technical capability on complex systems. For example, a transportation systems contract might offer an award fee for keeping system availability above 99.5% during a two-year performance window from 2027 to 2028.

The vendor's responsibility is to align internal KPIs with the contract's incentive metrics and produce regular performance reports. When a contractor proposes extensive subcontracting, this alignment becomes even more critical, because subcontractor performance directly affects incentive calculations. Performance costs must be tracked meticulously to permit timely development of evidence for evaluation periods.

Award fee and performance-based structures

Award fee structures grant the government periodic assessment authority. A fee determining official reviews performance against pre-defined criteria and awards some or all of a potential fee pool. These evaluations can happen quarterly, semi-annually, or annually.

Performance-based contracts more broadly tie payment to outcomes rather than inputs. For example, a facilities management service contract might pay based on response times and resolution rates rather than simply staffing levels. This approach is increasingly common across federal agencies and aligns with the government's push toward accountability and results.

The documentation burden is significant. Monthly or quarterly performance reports, participation in evaluation boards, and internal data collection to support the case are all standard. Vendors should map each performance metric to internal data sources at contract kickoff rather than scrambling for evidence at evaluation time.

Contracko can store award fee plans, attach SLA documents, and set reminders for each performance review period and report due date. This structured approach to tracking helps ensure timely contract performance and positions teams well for evaluation cycles, particularly for legal teams using AI-powered contract analysis to stay ahead of obligations and risks.

6. Comparing types of government contracts

Choosing the right approach to a proposed contract starts with understanding how each type distributes cost risk, what it is best suited for, and what it demands from your organization. The table below provides a quick reference before signing a new federal or local government contract.

One thing to keep in mind: the contract type is not always negotiable. In many solicitations, federal agencies specify the contract type in the RFP, and the vendor's decision is whether to bid, not which type to propose. Still, understanding the differences helps price accurately, structure a team, and set up the right post-award tracking from day one.

Sample comparison table

Type	Who bears cost risk	Best for	Key vendor obligations	Pricing structure
Firm Fixed Price (FFP)	Vendor bears nearly all cost risk	Well-defined scope, commercial products, stable requirements	Deliver on spec and schedule; manage internal budget; no cost reporting to government	Single fixed price, paid at milestones or completion
Fixed Price Incentive (FPI)	Shared up to ceiling; vendor bears all cost above ceiling price	Complex production or development where cost savings are possible	Track costs vs target; report periodically; understand point of total assumption	Target cost plus target profit, adjusted by share ratio, capped at ceiling
Cost Reimbursement (CPFF/CPIF/CPAF)	Government bears most cost risk up to ceiling	R&D, prototypes, uncertain scope, research and development contracts	Detailed cost accounting; regular incurred cost reporting; audit readiness; manage allowable vs unallowable costs	Allowable costs reimbursed plus fee (fixed, incentive, or award)
Time and Materials / Labor Hour	Shared: government pays hours and materials; vendor manages efficiency	Professional services, IT support, maintenance, emergency work	Hour tracking by labor category; material documentation; stay within ceiling	Fixed hourly rates plus actual materials (T&M) or hours only (labor hour)
IDIQ (varies by order)	Depends on task order type (FFP, T&M, or cost)	Repeat services, long-term supply, government-wide needs	Task order management; ceiling and minimum tracking; option period monitoring	Master ceiling with individual order pricing per type

Firm fixed price is by far the most common type across both federal contracts and state and local markets. Cost reimbursement and T&M contracts are less frequent but require significantly more administrative discipline. Aligning pricing strategy, project controls, and contract management approach to the contract type is not optional. It is the foundation of profitable government work.

7. How contract type affects post-award management

Once the contract is signed, the real work begins. Every government contract type creates a different set of obligations, deadlines, and reporting requirements that must be actively managed. Getting this wrong leads to billing disputes, compliance risk, and missed renewal windows that can cost a vendor the entire contract.

The contract type determines what to track, how often to report, and what triggers action from the team. Here is how it breaks down:

• For firm fixed price contracts, the focus is on tracking deliverables, acceptance dates, milestone payments, and any option years with their specific exercise deadlines. The government typically must issue written notice to exercise an option 30 to 90 days before the current period ends.
• For cost reimbursement and cost plus award fee contracts, track incurred costs against funding ceilings, cost reporting due dates, and award fee evaluation cycles. Failing to notify the contracting officer when costs approach 75% to 85% of funding can create serious compliance problems.
• For time and materials and labor hour contracts, monitor hours burned per labor category and total spending against the not-to-exceed amount. Detailed timesheets are the primary defense against billing disputes.
• For IDIQs, the vendor manages a portfolio of task orders, each with its own period of performance, contract type, and funding level, all under one overall ceiling and end date.

Many federal and local contracts are structured as a base year plus several option years (for example, one base year plus four option years). These option periods must be tracked precisely. A missed option exercise date can halt work and revenue without warning.

Additionally, some government contracts involve letter contracts (undefinitized contract actions) used temporarily when the government cannot wait for full negotiation. FAR limits the obligation amount and requires definitization within a specified time. These also demand careful tracking to permit timely development of the final terms.

Using Contracko to manage government contracts

Contracko provides a centralized, AI-powered repository where vendors can upload PDFs or scanned copies of federal, state, or local contracts and task orders. The AI analysis automatically extracts contract type, total and ceiling values, period of performance, option periods, and key reporting obligations, reducing manual review time by 80%. This makes it a strong AI contract repository for small businesses that need clarity across many government agreements.

Smart reminders can be set for option exercise dates (for example, 60 days before the end of each option year), award fee reviews, deliverable milestones, and recurring cost reports. Multiple reminders per contract ensure that both business development and delivery teams see what is coming, without relying on someone remembering to check a spreadsheet.

For vendors managing multiple contract types simultaneously, Contracko's dashboard shows status, critical dates, and milestones across all contracts. Custom fields capture the specific data each contract type requires: ceiling values for cost reimbursement, labor category rates for T&M, target cost and share ratios for incentive contracts, and task order linkage for IDIQs.

For a deeper look at ongoing obligations once a contract is awarded, see our guide to government contract compliance. Alongside Contracko's core contract management features, these resources can help:

• Government contract management software for a deeper look at platform capabilities
• Contract management best practices for proven workflows across contract types
• Renewal tracking software for managing option years and auto-renewal deadlines
• Risks in contract management for understanding where vendors commonly lose money

Frequently asked questions about types of government contracts

These FAQs address common vendor questions that were not fully covered in the main sections above.

What is the most common type of government contract and why?

Firm fixed price is the most common type of government contract by number of awards and by dollar volume, representing roughly 58% of federal procurement spending. Agencies prefer FFP because it provides budget certainty: the price is agreed before work starts and rarely changes, which reduces administrative effort compared with cost reimbursement contracts. For vendors, FFP means straightforward billing tied to deliverables or milestones, with no requirement to open the books to the contracting officer.

The tradeoff is that vendors must be confident in their cost estimates because they absorb any cost overruns on a firm fixed price deal. Small businesses new to government work often start with smaller FFP projects to build a past performance record before pursuing larger or more complex contract types. Tools like Contracko help track FFP milestones and option periods so vendors do not miss critical acceptance or renewal dates.

How do I know which contract type is best for my company?

Start by assessing three factors: how well the scope can be defined, tolerance for cost risk, and internal accounting and reporting capabilities. If the scope is clear and costs can be estimated accurately, fixed price is usually the best fit because it rewards efficiency and keeps administration simple. If the work involves significant unknowns, such as research and development work or a new technology integration, a cost reimbursement or T&M model may be more appropriate.

Cost reimbursement contracts demand more sophisticated cost tracking than many small vendors have in place initially. If the accounting system cannot cleanly separate direct, indirect, overhead, and unallowable costs, compliance becomes a struggle and audit findings become a risk. Before bidding on a cost reimbursement or cost plus contract, honestly evaluate whether financial systems are ready. Reviewing past awarded contracts, ideally stored in a platform like Contracko, helps a company analyze which contract types have been most profitable and manageable over time.

What is a cost plus contract in government procurement?

A cost plus contract is a cost reimbursement agreement where the government pays allowable costs plus an additional amount as a fee or profit. The three main variants are cost plus fixed fee (where the fee is a set dollar amount regardless of actual cost), cost plus incentive fee (where the fee adjusts based on a formula), and cost plus award fee (where the fee depends on the government's subjective evaluation of performance).

These contracts reduce financial risk for contractors because allowable costs are reimbursed up to the ceiling, but they increase administrative and audit exposure significantly. Government agencies use cost plus structures for complex R&D, long-term defense programs, and situations where a construction contract or technical project has too many unknowns for fair and reasonable prices to be set competitively. Before bidding, confirm that the accounting system can handle the necessary cost data separation and reporting required by cost accounting standards.

What is an IDIQ contract in simple terms?

An IDIQ (Indefinite Delivery, Indefinite Quantity) contract is a long-term umbrella agreement that sets terms and a maximum ceiling value but leaves actual orders to be placed later as the government needs work done. Think of it as winning a seat at the table: the vendor is approved to do the work, but only earns revenue when the government issues specific task or delivery orders under the vehicle.

Holding an IDIQ does not guarantee revenue beyond the minimum guarantee, which can be as low as a few thousand dollars. Each order behaves like a mini-contract, often with its own type (FFP, T&M, or cost reimbursement) and its own performance period. IDIQs are common in IT, professional services, and facilities management where agencies expect repeated needs over three to ten years. Using Contracko to link all task orders back to the parent IDIQ lets leadership see total obligations and remaining ceiling at a glance, which is critical for accurate revenue forecasting.

How do option years and renewals work in government contracts?

Many federal and local contracts are structured as a base year plus several option years, for example one base year plus four one-year options. The government may choose to exercise each option or let the contract end. Contracts usually specify exact deadline windows when the government must issue written notice to exercise an option, often 30 to 90 days before the current period ends.

Federal option exercises are governed by FAR 17.207 and a default 60-day notice, which our contract renewal statistics set out alongside the audit findings on unexercised review.

Vendors should track these dates closely because failure by the agency to exercise an option can stop work and delay revenue, and vendors may also need to review updated pricing or terms before agreeing to continue. Some multi-year IDIQ vehicles also have overall contract end dates that cap how long orders can be placed and performed. Contracko is designed to capture option periods and automatically remind both business and delivery teams well before key exercise dates, reducing the risk of surprise lapses. Explore more about managing these timelines with renewal tracking software built specifically for this purpose.

Contracko starts at $75 per month (billed annually) and includes a free trial with no credit card required. Whether a vendor is managing its fifth government contract or its fiftieth, having every obligation, deadline, and ceiling visible in one place is the difference between smooth contract performance and costly surprises.

Images in this article were generated with the assistance of AI.