Every federal contract over $150,000 comes with a performance report card. That report lives in the Contractor Performance Assessment Reporting System — CPARS — and it follows your company into every competitive bid you submit for years afterward. A single "Unsatisfactory" rating can knock you out of source selections before an evaluator reads your technical approach. An "Exceptional" rating, on the other hand, is worth real money in points-based best-value competitions.
Most small business owners learn this the hard way. They finish a contract, move on to the next opportunity, and then lose a bid because an evaluator pulled up a past performance record they had no idea existed.
What CPARS is and who uses it
CPARS is the system of record for federal contractor past performance data. It feeds directly into the Past Performance Information Retrieval System (PPIRS), which contracting officers and source selection boards query when evaluating proposals. When a CO pulls up your Unique Entity Identifier (UEI) or CAGE code, every rated contract over the threshold appears.
The $150,000 threshold applies to most contracts. Construction contracts have a higher threshold — $700,000 — before a rating is required. Professional and architect-engineer services follow separate thresholds under FAR Part 36. If you are subcontracting and the prime contractor submits a rating on your work, that rating can also be passed up and referenced.
Ratings use a five-point scale: Exceptional, Very Good, Satisfactory, Marginal, and Unsatisfactory. The middle rating, Satisfactory, means you did what the contract required. Most small businesses aim for Very Good as a baseline.
When the contracting officer submits a rating
The CO or their Contracting Officer's Representative (COR) initiates the rating within 120 days of contract completion. For contracts running longer than one year, they should submit interim ratings annually — though in practice this step is frequently skipped or late. Do not assume silence means everything is fine.
Once the rating is submitted in CPARS, you receive an email notification at the email address on file with SAM.gov. You have 14 calendar days to review the rating. During that window you can either concur with it or submit a contractor comment.
This is where most small businesses make their first mistake. They see the notification, assume they agree with the rating, and click through without reading carefully. Or they open it and disagree but feel awkward pushing back on a CO they want to work with again.
Both are costly errors.
How to respond to an adverse rating
An adverse rating is anything below Very Good. If you see a Satisfactory where you believe your work merited Very Good, or a Marginal where you believe you satisfied the contract, you have three options.
First, you can submit a written contractor comment directly in CPARS. This comment becomes a permanent part of the record. Every future evaluator who reads your rating also reads your comment. A well-written comment that explains the circumstances — a government-caused delay, a scope change, an ambiguous performance standard — can neutralize the damage from a mediocre narrative. Write in plain, factual language. No defensiveness, no venting. State what happened, cite the specific contract data requirements or modification numbers if relevant, and describe what you did to resolve the issue.
Second, if you believe the rating is factually inaccurate, you can request a formal review. The CO's supervisor handles the first level. This is not an informal conversation. You are submitting a written objection, and the agency has a defined process for adjudicating it. Document everything: emails, inspection reports, delivery confirmations, COR correspondence. The stronger your paper trail, the better your position.
Third, if the agency-level review goes against you, you can escalate to the agency's ombudsman or, in extreme cases, file a claim under the Contract Disputes Act. That path is expensive and slow, and most disputes do not warrant it. But for a large recompete where your past performance record is genuinely a competitive factor, it may be the right call.
One thing you cannot do: negotiate informally to have a rating changed in exchange for not pushing back. That crosses into territory that creates problems for both you and the CO.
How evaluators actually weight CPARS in source selection
Past performance evaluation is governed by FAR Part 15. The specific weight varies by contract — some solicitations weight past performance at 30%, others at 50%, and some treat it as a pass/fail gate. Read the solicitation's evaluation criteria before you assume anything.
In a best-value tradeoff, evaluators typically assign a performance confidence rating rather than a raw score. The standard scale: Substantial Confidence, Satisfactory Confidence, Limited Confidence, No Confidence, and Unknown (for companies without a relevant record). A company with consistent Very Good or Exceptional CPARS ratings on similar work earns Substantial Confidence. A company with one Marginal rating mixed with otherwise solid performance might land at Satisfactory Confidence and lose to a competitor rated higher, even if their technical approach is stronger.
Here is what matters for small businesses specifically. If your company is young and has only one or two CPARS records, each one carries outsized weight. A single bad rating on your first government contract can trail you for three years. The lookback window for past performance is typically three to five years, though high-dollar or complex procurements may look back further.
Relevancy matters as much as rating level. An Exceptional on a $200,000 facilities maintenance contract will not carry much weight in a $5 million IT services competition. Evaluators are specifically looking for contracts similar in size, scope, and complexity to what is being bid. When you submit proposals, choose your best and most relevant references, and include narrative context that explains the similarity.
What to do proactively before ratings are submitted
Request a pre-final review conversation with the CO or COR approximately 30 to 45 days before contract completion. Ask directly: "Is there anything you would flag as a performance concern before you close out the contract?" This gives you a window to resolve open issues before they become permanent record.
Keep a performance file for every contract. Save all written positive feedback, completed deliverable acceptance letters, and any modifications that adjusted requirements. If you ever need to submit a contractor comment or request a review, you will want those records immediately, not six months later when the email trail is hard to reconstruct.
Monitor your CPARS record regularly. Log into cpars.gov using your government-issued credentials and review what is on file. Contracting officers make data entry errors. Rating periods get misattributed. Catching a mistake three years after the fact is far harder than catching it during the 14-day comment window.
Three actions to take this week
- Log into cpars.gov and audit your complete record. Verify that every rating accurately reflects your contract performance, that the contract values are correct, and that no adverse ratings appear that you were not notified about.
- If you have a contract closing in the next 60 days, schedule a close-out conversation with your CO now. Address any open performance concerns before the rating is submitted.
- Review the past performance evaluation criteria in your current active solicitations. Know the weight, the confidence scale language, and which of your CPARS records you plan to reference before you write a single word of your past performance volume.
Your CPARS record is not a formality. It is one of the most direct inputs into whether you win the next contract. Treat it that way.
