Government Contracts: What Contractors Need to Know About Bidding Federal Work

Government contracts are opportunities for private companies to sell goods, services, or construction work directly to federal agencies. The federal government spends roughly $650 billion annually on contracts, with tens of thousands of opportunities posted each month across all 50 states. For small contractors already working in construction, facilities, IT, or professional services, federal work can offer stable, repeat projects—if you understand how the bidding process actually works.

Types of Government Contracts

Federal contracts fall into a few core structures, each with different payment and risk profiles:

• Fixed-price contracts: You quote a total price, and the government pays that amount upon completion. Your profit or loss depends on how accurately you estimated the work. This is common for construction and supply orders.
• Cost-plus contracts: The government reimburses your documented costs plus an agreed-upon fee (a percentage or flat dollar amount). These are typical for research, development, or complex services where the full scope is hard to predict upfront.
• Time-and-materials contracts: You bill hourly or daily labor rates plus materials, up to a ceiling amount. Common in IT services and consulting.
• Blanket purchase agreements (BPAs): You're pre-approved as a vendor for certain goods or services. The government can order from you repeatedly without a new competition each time.

The contract type is stated in the solicitation. Don't assume it matches how you normally bid private work—read the terms carefully.

How Government Contracting Works: The Step-by-Step Process

Federal procurement follows a formal structure, and understanding the flow helps you know when and how to respond.

1. Solicitation posted. A federal agency publishes a request for proposal (RFP), invitation for bid (IFB), or statement of work (SOW) on SAM.gov, the System for Award Management. The posting includes the scope of work, evaluation criteria, submission requirements, and the deadline for responses.
2. Amendments may be issued. Before the deadline, the agency often releases clarifications or changes to the original solicitation. You must account for all amendments—missing even one can disqualify your bid.
3. You prepare and submit your response. Your bid or proposal must address the evaluation criteria exactly as stated. Agencies score proposals point-by-point, so generic responses score lower than ones directly mapped to each requirement.
4. Evaluation period. The government evaluates all responses received by the deadline. This typically takes 2–4 weeks, but can stretch to months for large or complex awards.
5. Award notification. The agency announces the winner(s). Unsuccessful bidders usually receive a debrief explaining why their response didn't score as high.
6. Contract begins. You receive the contract and perform the work under the terms specified.

One key rule: the deadline is hard. If your response arrives even one minute late, it's rejected, no exceptions. Many agencies use the SAM.gov upload timestamp, not your email send time. Plan to submit 24–48 hours early.

Where to Find Government Contract Opportunities

SAM.gov is the official source. Every active federal solicitation is posted there, searchable by agency, NAICS code, keyword, and state. You can filter by contract value, type, and deadline.

Beyond SAM, several agencies maintain their own procurement portals:

• GSA (General Services Administration): Handles IT, office supplies, professional services, and facilities. Schedule contract awards are posted on the GSA Schedules.
• DoD (Department of Defense): Posts on SAM and also maintains SPE (Single Process Environment) for some procurements.
• NIH and HHS: Heavy users of contracts for research support, IT infrastructure, and administrative services. Often post on Grants.gov as well as SAM.
• State-specific and smaller agencies: All post on SAM, but some also list opportunities on their own websites.

Small Disadvantaged Businesses (SDBs) and women-owned small businesses can search set-asides reserved for them on SAM. These are real opportunities with less competition, if your firm qualifies.

Response Timelines: The Dates That Matter

Response deadlines for government contracts vary widely. Understanding the typical windows helps you build a capture schedule.

Amendments can extend deadlines or change requirements. Some solicitations are canceled after posting—you won't win if you miss the cancellation notice. Staying on top of all amendments and deadline shifts is critical.

Building Your Response Strategy

Winning government contracts requires more than a good price. Agencies score proposals on technical capability, past performance, and cost. Here's what matters:

Understand the evaluation criteria. The solicitation lists how each section scores. If technical approach is weighted 50%, cost 30%, and past performance 20%, your proposal should reflect those weights. Spending half your response on price when technical is the main factor means lower scores.

Provide evidence, not claims. "We have 10 years of experience" is weak. "We delivered three similar projects to DoD in 2024, on time and under budget, as documented in reference letters from [Agency] and [Agency]" is strong. Include past performance examples that match the work scope.

Track every deadline and requirement. Missing a single deliverable—a reference letter, a cost break-down sheet, a past performance questionnaire—can get your bid rejected. Checklists aren't optional. Many contractors find that monitoring multiple solicitations' amendments and dates by hand leads to missed details. Tools that alert you to key deadline windows and track outstanding requirements help you stay compliant without last-minute scrambles.

Prepare your boilerplate in advance. Company history, NAICS codes, past performance summaries, and corporate capability statements should be drafted and approved before you start a proposal. You'll edit them for each bid, but starting from a solid template saves weeks.

Frequently Asked Questions

Do I need to be registered on SAM.gov to bid?

Yes. Your company must have an active SAM.gov account, with an updated DUNS number and Cage Code, to submit responses. Registration is free but can take 1–2 weeks to activate. If you've never bid federally, start this process now, even if you don't have a specific opportunity yet.

What happens if I underbid and realize mid-project I can't make a profit?

You're obligated to perform the contract at the bid price. Government contracts don't have escape clauses for "I quoted too low." Review cost estimates carefully before submitting. A low bid that loses money damages your past performance record, making future contracts harder to win. It's better to quote higher and lose occasionally than to win everything and hemorrhage money.

How do I compete against larger contractors with established government relationships?

Set-aside contracts for small businesses level the field—only small firms can compete. Beyond that, focus on geographic advantage (you're local), specialization (you're the only HVAC vendor bidding in a rural area), or price efficiency (lower overhead means better margins). Building a track record of solid past performance on smaller contracts ($50k–$500k) makes you competitive for larger work later. Many agencies specifically want to grow diverse vendor bases and will choose a smaller firm with solid capability over a larger one if the proposal is comparable.

Can I ask the government questions about a solicitation before I bid?

Yes. Most solicitations include a point of contact and a deadline for written questions. Submit in writing and follow the agency's process exactly—usually email to a specific address with a specific subject line. The agency's answers are posted for all bidders to see, so no one gets unfair advantage. Don't skip this step if the solicitation has confusing language; a clarification question now beats a wrong bid later.