A significant change to how the Department of Defense handles bid protests is approaching a hard deadline. Section 875 of the Fiscal Year 2026 National Defense Authorization Act, signed into law on December 18, 2025, gives DoD 180 days to revise the Defense Federal Acquisition Regulation Supplement (DFARS) to implement a new financial penalty for incumbent contractors who file unsuccessful protests at the Government Accountability Office. That deadline falls on June 16, 2026 — and what DoD writes into the DFARS over the next several weeks will reshape the risk calculus for every prime that loses a defense re-compete and considers filing a GAO challenge.
What Section 875 Requires
Section 875 creates a targeted withholding mechanism aimed squarely at a specific protest pattern: an incumbent contractor loses a follow-on contract, files a GAO protest, and continues performing on a bridge contract while the protest winds through the 100-day statutory review process. Under current rules, that bridge performance continues with full payment regardless of the protest's merits. Section 875 changes that.
Under the new framework, a contracting officer may withhold up to 5 percent of payments owed to an incumbent contractor who files a GAO bid protest while continuing performance on a bridge contract. The withheld funds are held in abeyance during the protest. If GAO ultimately dismisses the protest for lacking any reasonable legal or factual basis — the statute's specific threshold — the withheld funds are permanently forfeited. The contractor does not get them back.
The scope of Section 875 is deliberately narrow. It applies only to protests filed at the GAO, not to agency-level protests or cases brought before the U.S. Court of Federal Claims. It also applies only to incumbents challenging the award of a follow-on contract — not to offerors protesting a new competition they were never performing. That targeting is intentional: Congress was focused on a specific abuse pattern, not on the broader protest ecosystem.
What "Reasonable Legal or Factual Basis" Means in Practice
The forfeiture trigger — GAO dismissing a protest as lacking any reasonable legal or factual basis — is a meaningful legal threshold, but contractors should not assume it sets a low bar in their favor. GAO already dismisses a significant share of protests, and a dismissal on threshold grounds (timeliness, standing, or failure to state a valid basis of protest) may well satisfy that standard even if the underlying argument was not frivolous in the conventional sense.
What the statute is specifically targeting is the "kitchen sink" protest strategy. That is the practice of filing a protest that bundles numerous weak or marginal arguments together, not because each argument has genuine legal merit, but because the combined volume of allegations extends the GAO review clock and prolongs bridge-contract performance. For an incumbent generating revenue on a bridge contract during the protest period, even a protest that ultimately fails can be economically rational under current rules — because the cost of the filing is low relative to the revenue earned during the extended performance window.
Section 875 alters that calculus. If a contracting officer determines that the protest lacked any reasonable legal or factual basis after GAO dismisses it, the contractor forfeits up to 5 percent of payments already withheld. For a large bridge contract, that exposure can be substantial. A contractor earning $10 million in bridge revenue over a protest cycle could forfeit up to $500,000. That is a real financial consequence — not a slap on the wrist.
The implementing regulations will likely address how contracting officers should make the "reasonable basis" determination and whether that determination is independently reviewable. Industry will push hard on those definitions during the rulemaking process.
What DoD's Implementing Rule Must Address
The DFARS revision required by June 16 will need to answer several questions that the statute leaves open. The most consequential is whether the withholding is mandatory or discretionary. Section 875 says a contracting officer "may" withhold — not "shall" — which gives DoD latitude to structure the rule as a tool available to contracting officers rather than an automatic penalty. How broadly or narrowly DoD defines that discretion will determine how often the mechanism is actually used.
The implementing rule must also establish documentation and notice procedures. Contractors are entitled to know when funds are being withheld and on what grounds. The rule will need to specify when the withholding decision must be made, what written justification is required, and how the contractor is formally notified. These procedural requirements matter: a contractor whose funds are withheld will want a clear administrative record if it seeks to challenge the withholding or argue that its protest did have a reasonable basis.
The rule will also need to address the mechanics of fund release. If the protest succeeds or is withdrawn, the withheld funds presumably must be released — but the timeline and process for that release need to be codified. Similarly, if GAO sustains the protest in part, the rule must address whether partial forfeiture applies or whether the withholding is released in full.
What It Means for Contractors
For contracting professionals and their legal teams, Section 875 introduces a new line item in the protest risk analysis. Before filing a GAO protest on a lost re-compete, incumbents must ask a harder question: does each argument have a genuine, defensible legal or factual basis — or is some of it included primarily to extend performance?
That question has always mattered as a professional responsibility issue. Section 875 makes it a financial one as well. The practical guidance is simple: if you cannot articulate a credible legal theory for each protest ground, do not include it. Bundling weak arguments may now cost you real money, not just credibility.
Incumbents should review their bridge contract payment structures before any protest is filed. Understanding what a 5 percent withholding looks like on their contract — in dollar terms, over a projected protest timeline — gives legal and business teams the data needed for an informed go/no-go decision.
Watch the DFARS rule closely when it drops. Whether DoD makes withholding mandatory or discretionary, and how it frames notice and documentation requirements, will materially affect how often contracting officers invoke this authority. The June 16 deadline is not the end of this story — it is the beginning of the next one.
