Understanding how DoD source selection evaluation works from the inside is one of the most valuable capabilities a defense contractor can develop. The Source Selection Authority (SSA) is making a judgment about which offeror best serves the government's needs — your proposal is an argument to that decision maker.
Here's how the evaluation process works and what it means for how you structure and write proposals.
The Source Selection Structure
For competitive DoD acquisitions, the source selection process involves several roles:
Source Selection Authority (SSA): The official responsible for the selection decision. For large programs, often the Program Executive Officer or service acquisition executive. For smaller awards, a contracting officer.
Source Selection Advisory Council (SSAC): For large programs, an advisory body that prepares a comparative analysis for the SSA.
Source Selection Evaluation Board (SSEB): Technical evaluators who assess each proposal against the evaluation criteria. Typically organized by evaluation factor.
Contracting Officer (KO): Manages the procurement, ensures compliance with FAR/DFARS, and negotiates.
Evaluation Factors: What Gets Scored
The solicitation's Section M specifies evaluation factors and their relative importance. Common DoD IT/technology factors:
Technical Approach: How does your solution address the government's requirements? Evaluated for soundness, innovation, risk, and feasibility. Usually the most important factor.
Management Approach: How will you organize, manage, and staff the effort? Key personnel qualifications.
Past Performance: Track record of similar work delivered on time, on cost, at quality. Assessed via references, CPARS, and PPIRS data.
Price/Cost: For best value acquisitions, not necessarily the lowest price. For Lowest Price Technically Acceptable (LPTA), price is decisive once technical acceptability is established.
The solicitation states the relative importance of factors — "technical approach is significantly more important than price" signals that superior technical scores can overcome modest price differentials.
Best Value Tradeoff Analysis
In Best Value (BV) source selections (distinct from LPTA), the SSA makes a tradeoff judgment: is a higher-rated proposal worth the price premium? The FAR and DoD Source Selection Procedures require the SSA to document this judgment.
This means your pricing strategy must account for where you stand technically. If you believe your technical approach is significantly stronger than competitors, a modest price premium can survive a best-value tradeoff. If your technical differentiation is weak, price becomes the decisive factor.
Technical Approach: What Evaluators Are Looking For
Technical evaluators read proposals looking for evidence — not assertions. "Our team is highly experienced" is an assertion. "Our team's principal engineer led the integration of [similar system] achieving [specific outcome]" is evidence.
Key technical evaluation concepts:
Strengths: Features of your proposal that exceed requirements and provide benefit to the government. Evaluators document specific strengths that support the SSA's award decision.
Weaknesses: Flaws that increase risk or reduce probability of success but don't make the proposal unacceptable.
Significant weaknesses: Serious flaws that may require clarification or create performance risk.
Deficiencies: Failures to meet material requirements — can result in proposal rejection.
Your proposal should anticipate strengths and try to earn them explicitly. Review the evaluation criteria and write directly to them.
Past Performance Assessment
Past performance is typically assessed as "very relevant," "relevant," "somewhat relevant," or "not relevant" for each reference, then combined into an overall rating (Exceptional, Very Good, Satisfactory, Marginal, Unsatisfactory, or No Recent/Relevant History).
CPARS: Contractor Performance Assessment Reporting System — government-initiated performance reports on all contracts over the reporting threshold. CPARS data is available to evaluators. If you have poor CPARS ratings, address them in your past performance volume.
References you submit: Choose references that are technically similar to the requirement (relevant), where you performed well (good CPARS scores or positive relationships), and where the POC will respond promptly to government inquiries.
No history is better than bad history: "No Recent/Relevant Past Performance" receives a Neutral rating — which is often equivalent to Satisfactory. This is why new entrants can win against incumbents with poor past performance.
See Rutagon's defense contract proposal volume structure and defense contractor past performance database for proposal development guidance.
Explore Rutagon's government contracting capabilities.
FAQ
What is LPTA vs. Best Value source selection and which is better for small tech companies?
LPTA (Lowest Price Technically Acceptable) selects the lowest-priced offer that meets minimum technical requirements — there's no reward for superior technical approaches. Best Value allows the government to pay a premium for better technical solutions. Small tech companies with strong technical capabilities generally perform better in Best Value acquisitions where their differentiation is rewarded. LPTA competitions commoditize the work.
How do evaluators handle ties in technical scoring?
True technical ties are rare in practice — when they occur, price typically becomes the differentiating factor. More commonly, proposals appear close on scoring but the SSAC/SSA documentation shows real differentiation in strengths when narratively compared. Proposal writing quality (clarity, specificity, evidence) often creates the perceived tie-breaking differentiation.
Can a contractor protest a source selection decision?
Yes. Offerors may file bid protests with the Government Accountability Office (GAO), the Court of Federal Claims (COFC), or at the agency level. GAO protests must be filed within 10 calendar days of learning the basis for protest. Common protest grounds include: departure from evaluation criteria, unequal treatment, unreasonable technical evaluation, and undisclosed evaluation criteria. Protests succeed approximately 40% of the time at GAO.
What are debriefs and should contractors always request them?
After award, offerors can request a post-award debrief where the government explains their evaluation and identifies strengths and weaknesses. Debriefs are valuable for improving future proposals and understanding what competitors may have offered. Always request a debrief — the information is directly applicable to future bids, even if the award decision won't change.
How does proposal price affect technical evaluation?
In a properly conducted best value source selection, price is evaluated separately from technical factors — evaluators who assess technical proposals should not see pricing. Price affects the award decision during the tradeoff analysis, but the technical rating should be independent of the offered price.