Source Selection Authority
SSA
Also known as: SSA, selecting official
Sits on: Buying agency
At a Glance
- Works for
- The buying agency; often the CO, sometimes a higher official
- Authority
- Makes the integrated best-value award decision
- When you deal with them
- You don't directly — they act on the evaluation record
- Key document
- The Source Selection Decision Document (SSDD)
- Governing authority
- FAR 15.303; FAR 15.308
Who They Are
The Source Selection Authority (SSA) is the official responsible for the final award decision in a negotiated (FAR Part 15) source selection. Under FAR 15.303 the contracting officer is the SSA unless the agency appoints someone else — on large or high-visibility buys the SSA is often a senior program or executive official, supported by a source selection evaluation board and a source selection advisory council. The SSA's job under FAR 15.308 is to make an independent, integrated judgment: read the evaluators' findings on each factor (technical/mission capability, past performance, cost or price, and any others in Section M), weigh the strengths, weaknesses, and risks, and decide which proposal represents the best value to the government consistent with the solicitation's stated evaluation scheme. Crucially, the SSA is not bound by the evaluators' scores or a mechanical formula; the SSA can reach a different conclusion so long as it is reasonable and documented. That reasoning is captured in the Source Selection Decision Document (SSDD), the record that supports the award and is the focus of any bid protest.
When You Deal With Them
- You rarely interact with the SSA directly — they decide on the written evaluation record, not through contractor contact.
- In a best-value tradeoff — the SSA decides whether your technical or past-performance advantages are worth a higher price.
- At award — the SSA's decision, documented in the SSDD, is what selects the winner.
- In a debriefing or protest — the SSA's tradeoff rationale is what you probe to understand why you did or did not win.
What They Do
| Responsibility | What It Means |
|---|---|
| Makes the tradeoff decision | In a best-value acquisition the SSA decides whether a higher-rated, higher-priced proposal is worth the premium over a lower-priced one, within the solicitation's stated weighting. |
| Exercises independent judgment | Under FAR 15.308 the SSA is not bound by the evaluation board's scores or a formula; the SSA can disagree, but must explain why in writing. |
| Documents the rationale | The SSA records the integrated assessment and the basis for the award in the Source Selection Decision Document (SSDD) — the core of the protest record. |
| Stays within the stated scheme | The SSA must select consistent with the factors and their relative importance disclosed in Section M; deviating from the disclosed scheme is a classic protest ground. |
What It Means for an SDVOSB
Understanding the SSA changes how an SDVOSB writes a proposal. In a best-value tradeoff, the SSA is the person you are ultimately persuading — not the low-level evaluator — so your technical volume and past-performance narrative need to hand the SSA clear, discriminating reasons to pay a premium for you: quantified benefits, reduced risk, proven relevant performance. In a lowest-price technically-acceptable (LPTA) buy, by contrast, the SSA has little room to reward your strengths, so your strategy shifts to being clearly acceptable at a competitive price. After a loss, request a debriefing and read the tradeoff rationale carefully: if the SSA departed from the Section M weighting, ignored a strength, or made an unequal comparison, that is a potential protest ground at GAO. The SSDD is the document your protest — or your improvement for next time — will live and die on.
Watch Out For
- Writing to the evaluator, not the decider — a proposal full of compliance but short on discriminators gives the SSA nothing to trade on.
- Assuming the highest technical score wins — in a tradeoff the SSA weighs price too, and 'good enough for less' can beat 'best for more.'
- Overlooking the SSDD in a debrief — the SSA's documented rationale is where a valid protest ground (or a lesson) hides.
- Confusing best-value with LPTA — in LPTA the SSA cannot pay a premium for your strengths; know which one you're in before you price.
Run the Numbers
Frequently Asked
Who is the source selection authority?
The Source Selection Authority (SSA) is the official who makes the final award decision in a negotiated (FAR Part 15) competition. Under FAR 15.303 the contracting officer is the SSA unless the agency designates someone else — on large acquisitions the SSA is often a senior program or executive official. The SSA weighs the evaluators' findings on technical merit, past performance, and price and decides which proposal is the best value, documenting the reasoning in the Source Selection Decision Document.
Does the source selection authority have to follow the evaluators' scores?
No. Under FAR 15.308 the SSA exercises independent judgment and is not bound by the evaluation board's numeric or adjectival scores or by any mechanical formula. The SSA can reach a different conclusion than the evaluators — but the decision must be reasonable, consistent with the solicitation's stated evaluation factors and their relative importance, and documented in writing. An award that departs from the disclosed evaluation scheme without justification is a common bid-protest ground.
Primary Sources
Plain-English reference, not legal advice. Federal roles are reorganized and their titles and reporting lines change over time, and the FAR/CFR sections that define them are amended from time to time — always confirm the current role, its authority, and the governing citation against the official source and the actual solicitation before relying on it, and consult qualified counsel for your specific situation.
Change log (1)
- LaunchedPublished the federal contracting roles & officials reference covering the people an SDVOSB deals with across a set-aside — the contracting officer (FAR 1.602), contract specialist (FAR Part 1), contracting officer's representative (FAR 1.604), source selection authority (FAR 15.303), OSDBU director (15 U.S.C. § 644(k)), small business specialist (FAR 19.201), SBA procurement center representative (FAR 19.402), SBA commercial market representative (FAR 19.402(e)), SBA Area Office size specialist (13 CFR § 121.1001), SBA Office of Hearings and Appeals judge (13 CFR Part 134), competition advocate (FAR 6.501), task- and delivery-order ombudsman (FAR 16.505(b)(8)), and APEX Accelerator counselor (10 U.S.C. §§ 4951–4955) — each with an at-a-glance quick-facts card, a when-you-deal-with-them list, a responsibilities table, an SDVOSB-specific angle, watch-outs, FAQPage, Article, Dataset, and BreadcrumbList structured data, primary-source citations, and cross-links into the glossary, how-to guides, forms, clauses, FAQ, and the set-aside eligibility, size-standard, win-probability, price-to-win, and subcontracting calculators.