TL;DR. Ask for the debrief in writing within 3 days, bring sharp questions, and treat the end of the debrief as the starting gun for a 10 day protest window (no, the agency will not remind you).
- Just got a loss notice? Send a written debrief request so it is received within 3 days of the notice. Do not wait for a phone call.
- Bidding on a DoD award of $15 million or more? You get 2 more business days to send follow-up questions, and the agency has 5 business days to answer.
- Thinking about a protest? If the rules look murky, file within 10 days of award and within 5 days of the debrief date you were offered. That keeps the performance stay in play.
- Working under the new FAR Part 15 text? Section numbers moved, so check which version your solicitation uses.
The debrief does two jobs, and only one is obvious
The obvious job is learning. You lost, you want to know why, and you want your next proposal to be better. The less obvious job is legal. For a required debriefing, the timing of that meeting sets the deadline for a protest at GAO. A protest cannot be filed before the debriefing, and it must be filed within 10 days after the debriefing is held.
So you are really sitting in a meeting that is both a lesson and a countdown. Walk in knowing which dates matter, and write them down before the first slide appears.
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Step one: ask early, in writing, and keep the receipt
Under the legacy rules, your written request has to be received within 3 days of the notice of award. Three days goes fast, especially if the notice lands on a Friday afternoon. The agency should then hold the debrief "to the maximum extent practicable" within 5 days of your request.
Note the phrase "maximum extent practicable." Agencies run late. A late or delayed debrief does not automatically extend your protest deadlines, even if the agency was the one that slipped. A kind reschedule email is not a legal extension.
So what: Send the request the same day you get the notice. Keep the sent timestamp. If the agency offers a debrief date, record it, because that date can matter for the stay deadline later.
Step two: ask questions that force specifics
Most debriefs go sideways because the questions are vague. "How did we do?" gets you a slide deck and a smile. Specific questions get you evaluator reasoning. Send your list in advance when you can, and use this tracker to keep the dates straight.
| Item | What to write or ask | Deadline to track | Your date |
|---|---|---|---|
| Written debrief request | Cite the solicitation number, request a debrief, and ask for a firm date | Received within 3 days of award notice | |
| Strengths and weaknesses | "Which specific strengths, weaknesses and deficiencies were assigned to our proposal, by factor?" | Debrief target is within 5 days of request | |
| Price and trade-off | "How did our price compare, and how did the source selection decision weigh price against technical merit?" | Ask at the debrief | |
| Evaluation method | "Where does the record show the evaluation followed the stated criteria?" | Ask at the debrief | |
| Follow-up questions (DoD, $15M or more) | Send written questions that the debrief raised | 2 business days after the debrief | |
| Agency written answers (DoD, $15M or more) | Log the day answers arrive | Agency has 5 business days | |
| Protest decision | Go or no go, with counsel | 10 days after debrief held (see below for DoD) |
So what: Take two people. One asks questions, one writes down exactly what was said and when it ended. That second person is your future protest exhibit.
Step three: know when the clock actually starts
For most required debriefs, the 10 day GAO window starts after the debriefing is held. There is also the stay, which is what makes a protest bite. The contracting officer must suspend or terminate performance if notice of a GAO protest arrives within 10 days of award or within 5 days after the debriefing date offered, whichever is later.
DoD adds a wrinkle. For competitive negotiated contracts, task orders and delivery orders valued at $15 million or more (the threshold was $10 million until the October 2025 inflation update), the enhanced debriefing rule gives you 2 more business days to submit questions, and the contracting officer must answer within 5 business days. Practitioner guidance says the debriefing is not concluded, and the protest clock does not start, until the agency delivers those written answers.
Key insight: The debrief is not just where you learn why you lost. It is also where the protest deadline gets set. If you only start counting days after your internal post mortem, you may already be late.
The rulebook is being rewritten, so double check the numbers
The FAR Part 15 overhaul has moved from model deviations into formal rulemaking. FAR Case 2026-003 was published on 18 September 2026, and the comment period closed on 19 October 2026. No final rule date has been announced.
Here is where it bites for debriefs. In the overhaul text on acquisition.gov, 15.506 now covers unsolicited proposals, not debriefings. In the overhaul text, postaward debriefings sit at 15.301 (formerly 15.506), and preaward notices and debriefings sit at 15.206. The preaward piece still gives you 3 days to request a debrief after notice of exclusion. The legacy text is still on eCFR as 15.505 and 15.506, and which version governs you depends on your agency's deviation and your solicitation date.
I found nothing showing the overhaul changes the statutory protest timelines. I also could not verify whether the stay rule's cross references were updated to match the new numbering, or whether DoD's deviation keeps the enhanced debrief. Look at your solicitation and agency deviation before you rely on any of this.
So what: Do not cite a section number from memory in a letter to the contracting officer. Cite the solicitation and quote the text you are actually under.
Module: Capture Management & Business Development
This post touches on concepts covered in depth in the Capture Management & Business Development module. BD lifecycle, proposal writing, win strategy, and the source selection process from both sides.
Start This Module Free →What to do this week
- Put a standing debrief request template in your proposal folder, so the 3 day deadline is a copy and paste job.
- Assign a note taker and a question asker for every debrief.
- Calendar two dates the moment you get a debrief offer: 10 days from award, and 5 days after the debrief date offered.
- If DoD and $15 million or more, also calendar the follow-up question and answer dates.
- Talk to counsel before the debrief, not after it. Waiting for the answer to "should we protest?" is how people discover the answer was due yesterday.
A good debrief makes your next bid better. A well timed one keeps your options open. With a little prep, you get both.
Debrief Requests That Get Real Answers
| Ask For | Why | What You Usually Get | Do Not Bother Asking |
|---|---|---|---|
| The evaluation of your own proposal | You are entitled to your own strengths and weaknesses | Ratings and narrative on your proposal | The awardee's full proposal |
| The overall ranking and price of the awardee | Required content in a post-award debrief | Award price and your relative standing | Line-item detail of competitors |
| The rationale for the award decision | Shows how the tradeoff was made | A summary of the source selection rationale | The names of individual evaluators |
| Written follow-up questions | Extends the record and, in enhanced debriefs, the clock | Written answers | Anything you did not ask before it closed |