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To vet a federal contractor before a major award, first identify the exact legal entity and performing unit, then follow the solicitation’s evaluation rules and compare relevant past work using authorized records. CPARS is the official source for federal past-performance information, but its full evaluations generally are not publicly browseable. Public checks such as SAM.gov exclusions and responsibility data help answer narrower questions; they do not replace performance narratives.
Start with the award’s evaluation rules
Get the solicitation and every amendment. Before searching for a contractor, note what the agency says it will evaluate and how it will treat past performance. FAR 15.305 says solicitations should describe the approach and give offerors an opportunity to identify similar federal, state, local, or private work. The actual criteria and method are solicitation-specific; there is no universal scoring formula.
- Which aspects of past performance are evaluated, and what rating method is used?
- What recency window applies, and how many references or projects are requested?
- How will the agency consider subcontractors, joint-venture members, or other team members?
- Does the solicitation permit the agency to use other sources, and how will it handle missing history?
Use the solicitation as the control document for your review. Do not assume that a public database’s available fields match the agency’s evaluation or that a rating or time window from another procurement applies here. FAR 15.305
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Capture the offeror’s legal name and Unique Entity Identifier (UEI). Then map its relationship to any parent, immediate owner, predecessor, subsidiary, affiliate, joint venture, proposed division, and major subcontractor. A similar company name is not enough to establish that a past contract belongs to the bidder or that the bidder’s proposed team performed it.
For each reference, determine which entity or unit actually performed the work. FAR responsibility guidance calls for considering identified immediate owners, predecessors, and subsidiaries in specified circumstances; affiliate performance or integrity can matter when it may adversely affect responsibility. A corporate relationship alone does not show that another entity’s record should be attributed to the bidder. FAR 9.104-3
Use each records source for the question it can answer
| Source | What it can show | Access and limitation |
|---|---|---|
| CPARS | Federal contract performance evaluations; the FAR identifies CPARS as the official source for past-performance information. | Full evaluations are source-selection information with limited access, not ordinary public records. Contractors can view their own evaluations; an outside reader should not assume they can retrieve a company’s narratives. |
| SAM.gov | Entity Information includes Exclusions and Responsibility/Qualification reports and related data services. | Some information may require sign-in or be access-restricted. These checks are useful for responsibility and integrity screening, not a substitute for CPARS narratives. |
| FAPIIS-related information | Available integrity information, including reported terminations for default or cause. | Review it separately from restricted CPARS evaluations. An entry is one responsibility consideration, not an automatic conclusion about award eligibility. |
| Other records and references | Customer references, award documents, audit or inspection material, and public agency notices may corroborate claims about a specific effort. | Use and weight them as the solicitation and agency rules allow; they are not official CPARS evaluations. |
The FAR’s official-source statement is direct: “CPARS is the official source for past performance information.” That does not make every evaluation public. FAR 42.1501 describes the system and limits on access; SAM.gov’s Entity Information page identifies its reports and data services. FAR 42.1501 · FAR 4.1201 · SAM.gov Entity Information
Build a sample around relevant work
For each prior effort, record the customer, contract or order identifier, performance dates, awardee and performing unit, scope, verified value or scale, contract type, delivery setting, and where the information came from. Keep the source attached to each fact so an award announcement or reference statement is not mistaken for an evaluation.
Compare each effort with the pending requirement across these dimensions:
- Scope: Did the work involve the same technical tasks, mission, or operating constraints?
- Scale and complexity: Were the delivery volume, coordination burden, and consequences of failure comparable?
- Currency: How recently was the work performed, and what period does the solicitation treat as relevant?
- Customer and environment: Did the work occur in a similar delivery setting or serve a comparable customer?
- Performing team: Did the proposed division, key team members, and subcontractors perform the cited work?
- Organizational changes: Have ownership, staffing, or organizational structure changed materially since the work?
These are practical comparison axes, not a statutory scoring rubric. FAR source-selection guidance directs evaluators to consider relevance, currency, source, context, and trends. A long list of impressive but unrelated awards can be less informative than a smaller set of closely comparable efforts. FAR 15.305
Read the narratives and the record of recovery
Federal past-performance evaluations use five adjectival ratings: exceptional, very good, satisfactory, marginal, and unsatisfactory. The rating definitions address whether requirements were met, customer benefit from performance beyond requirements, the extent of problems, and the effectiveness of corrective action. Each factor requires supporting narrative, so an adjective by itself is not a complete account.
A satisfactory rating means requirements were met; it is not a failure. The FAR cautions against lowering a rating merely because a contractor did not exceed requirements. Look for what happened, how it affected the customer, whether issues recurred, and whether corrective action worked. Record severity, timeliness, and recovery alongside the rating. FAR 42.1503
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Check adverse information and any response
Review available exclusions and responsibility or integrity information, including any reported termination for default or cause. For each item, establish its date, status, outcome, and whether later action changed the record. Do not treat an entry as automatic disqualification: responsibility is assessed under the applicable rules and the procurement’s facts.
For CPARS evaluations, FAR 42.1503 gives contractors 14 calendar days after notification that an evaluation is available to comment or rebut. A review above the contracting officer is available for disagreements, but “the ultimate conclusion on the performance evaluation is a decision of the contracting agency.” When a contractor response is available, include it in context rather than presenting a disputed account as settled fact. FAR 42.1503
Account for the limits of the record
The FAR’s stated CPARS information window is generally three years after completion of performance, extended to six years for construction and architect-engineer work under the specified agency-use rule. These are regulatory time periods, not guarantees that an outside reader can access every evaluation or that every solicitation uses the same recency standard. Apply the solicitation’s rules and distinguish the agency’s available record from the public information you can see. FAR 42.1503
A public search cannot establish that no CPARS evaluation exists or that a contractor has no adverse information. Nor does missing relevant history prove poor performance: responsibility rules generally do not permit an offeror to be found nonresponsible solely for lacking relevant performance history. Treat an empty or inaccessible record as a limit on what can be concluded, then use other evidence the solicitation and applicable rules allow. Classified contracts and special access programs follow separate agency procedures. FAR 9.104-3
In a high-stakes procurement, keep a clear distinction between records you directly reviewed, records that were unavailable, and conclusions supported by the evidence. The solicitation, current FAR text, any agency deviations, and authorized system access govern the actual evaluation; a public SAM.gov check alone cannot reproduce it.
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