What Is a GAO Bid Protest? A Contractor's Guide to Challenging Federal Awards

A GAO bid protest is a formal challenge you can file with the Government Accountability Office if a federal agency awarded a contract in violation of procurement rules. You have a strict 10-calendar-day window to file after receiving the initial award notice, and the GAO process typically reaches a decision within 100 days. Protesting costs far less than court litigation—GAO filing is free, though attorney fees usually run $5,000 to $20,000 depending on complexity.

Who Can File a GAO Protest?

Any contractor or potential contractor with "standing" can protest. Standing means you're an "interested party"—someone who competed for the contract, or someone who would have competed if the agency had conducted the solicitation properly. If you weren't given a fair chance to bid (for example, your NAICS code wasn't listed even though the work matches your services), you have standing. If you simply didn't bid, you generally lack standing unless you can show the solicitation itself was flawed in a way that prevented you from submitting.

Contractors in any sector can file—construction firms protesting GSA Schedule awards, IT shops challenging DoD task orders, facilities management companies disputing EPA regional contracts. The key is that you must have a real connection to the solicitation.

When Should You Consider Filing?

Protest when the agency violated federal acquisition rules. The most common grounds include:

• Improper evaluation: The winning proposal didn't meet the stated requirements, or the evaluation was inconsistent with the solicitation criteria.
• Inadequate notice: The solicitation didn't properly describe the work, evaluation criteria, or your eligibility.
• Unrealistic cost: The winning bid is so low it's impossible to perform the contract as described.
• Bias or conflicts of interest: A government employee had a financial interest, or the competitive process was rigged.
• Small business misclassification: The winner claimed small business status but is actually large.
• Failure to follow the solicitation rules: The agency accepted a proposal that didn't comply with stated instructions.

You cannot protest simply because you think your proposal was better or your price was lower. You must identify a specific violation of the Federal Acquisition Regulation (FAR) or the agency's procedures. For example: "Our firm was excluded from the competitive set despite meeting all the technical requirements listed in the RFP" is a valid basis. "We should have won because our team is more experienced" is not.

The GAO Protest Timeline and Process

The GAO protest process follows a strict schedule. Understanding the key dates helps you act quickly and stay compliant.

An expedited protest compresses the agency's response window to 5 days, which can move the decision faster if both parties agree or if GAO grants your request. Most protests take 60–100 days from filing to decision.

How to File a GAO Protest

Your protest document must follow GAO's rules precisely. It needs:

1. A clear statement of the basis: Exactly what the agency did wrong. Include specific references to the RFP and FAR citations.
2. Supporting evidence: Documents, email exchanges, or proposal excerpts that prove your point.
3. Your interest: Why you're standing (you bid, you should have been allowed to bid, etc.).
4. Corrective action requested: What remedy you want—reevaluate the proposals, cancel the award, exclude the flawed bidder, or similar.
5. A disclosure statement: Names and addresses of your company and any counsel, plus confirmation that you've told the agency and winning contractor that you're protesting.

You can file the protest yourself, but most contractors hire a government contracts attorney to prepare it. The attorney ensures the legal theory is sound and the document complies with GAO's procedural rules. Missing a deadline or omitting required elements can get your protest dismissed on technical grounds, even if you're right on the merits.

File electronically with GAO via their website. You'll receive confirmation immediately. GAO then forwards it to the agency and the winning contractor promptly.

What Happens When GAO Decides

GAO issues a written decision that explains its reasoning and ruling. The outcomes fall into three categories:

GAO sustains your protest: The agency violated the rules. The agency must take corrective action—reevaluate proposals, cancel the award, recompete, or similar. You don't directly recover money, but you get a second chance to bid, or the contract is recompeted.

GAO denies your protest: The agency followed the rules. The award stands. You've spent attorney fees and gained no financial recovery. If you believe the GAO decision itself was wrong, you can appeal to federal court, but that's expensive and rare.

The agency takes voluntary corrective action: Before GAO decides, the agency may cancel the solicitation, reevaluate, or modify the award. You may not receive a formal GAO decision, but the corrective action addresses your concern.

Red Flags and Hard Limits

The 10-day deadline is strict. You must file within 10 calendar days of when the agency posted the award notice. If you miss it, GAO will dismiss your protest and you cannot appeal that dismissal. Mark your calendar the day you see the award on SAM.gov.

Standing matters. If GAO finds you don't have a direct interest in the contract—for example, you work in a completely different geographic market or NAICS code—it will dismiss your protest before even addressing the merits.

Bid and propose rule: In most federal solicitations, if you didn't submit a proposal, you cannot protest the evaluation of the proposals. You can only protest the solicitation itself (improper notice, bad requirements, etc.). The exception is if you can show the agency excluded you from competing improperly.

Staying aware of SAM.gov awards in your sector is critical to catching that deadline. Many contractors monitor their relevant NAICS codes and set alerts for amendments and awards so they know immediately when to start counting their 10 days. Tools like BidWatch automate this tracking, alerting you the moment an award is announced—giving you a clear window to decide whether to protest. You can try BidWatch free for one solicitation.

Understanding the Costs and Benefits

Filing a GAO protest is free—the GAO doesn't charge a filing fee. However, you'll likely need a government contracts attorney to prepare a credible protest. Attorney fees typically range from $5,000 for a straightforward case to $15,000–$20,000 for complex disputes with multiple parties and extensive record review.

The potential benefit is that if you win, the contract is reevaluated or recompeted—giving you a real chance to win work you lost. If the original award was overturned due to evaluation errors, a reevaluation might result in your proposal being selected. If the contract is recompeted, you compete on the new terms.

However, if you lose the protest, you've spent the attorney fees and gained nothing except knowledge that the decision was sound. Weigh this carefully: a $250,000 contract award might be worth fighting for; a $25,000 award might not justify the legal cost.

Impact on Future Business

Federal law prohibits agencies from retaliating against contractors who file a protest. An agency cannot penalize you on future bids because you challenged a prior award. That said, the business reality is more nuanced—protesting a contract can strain relationships with an agency, and that relationship may influence how future solicitations are written or evaluated. Many contractors weigh this risk before filing.

Real Example

A construction firm bids a GSA Schedule indefinite-delivery, indefinite-quantity (IDIQ) contract for $5 million in potential work. The agency awards it to a competitor. Your firm receives the award notice and realizes the winning proposal says it will use a subcontractor to perform the work, but the RFP required the prime contractor to perform directly. You have 10 days to file. You contact a government contracts attorney, who prepares a protest arguing the winning proposal is noncompliant. You file with GAO on day 9. The agency responds that it has evaluated the proposal and accepted the subcontracting plan. GAO sustains your protest and requires the agency to reevaluate or cancel the award. The contract is recompeted with stricter language, and your firm re-bids and wins.

In that scenario, protesting was worthwhile because the issue was clear-cut and the contract value justified it.

FAQ

What's the difference between a GAO protest and suing in the U.S. Court of Federal Claims?

GAO protest is administrative, free to file, and fast (100 days typical). The U.S. Court of Federal Claims is federal court, costs far more in attorney fees ($20,000–$100,000+), takes much longer (years), and you must typically file after the GAO process concludes. Most contractors exhaust GAO first, then pursue court only if the stakes justify it and they believe GAO misapplied the law.

Can I protest every time I lose a bid?

No. You need a specific legal basis—a violation of the FAR or the agency's stated procedures. If the evaluation was merely unfavorable to your proposal, or the winner's proposal was stronger, you have no grounds to protest. The evaluation must have been flawed or biased in a way that violates procurement rules.

Does protesting a federal contract hurt my company's reputation?

Legally, federal law prohibits retaliation. In practice, protesting can strain your working relationship with an agency, and that relationship may influence how future solicitations favor your firm. Some contractors avoid protesting for this reason. Others protest when the violation is clear because the law forbids retaliation and they value standing up for fair competition. It's a business judgment call.

What if the agency cancels the solicitation after I protest instead of defending its award?

That's a form of corrective action. The agency has decided to start over. You don't receive a formal GAO decision, but the corrective action addresses your concern. You may re-bid the solicitation when it's reissued. This happens when the agency realizes its award was flawed and chooses to cancel rather than fight the protest.