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Home / Resources / Defense Contracting
Defense Contracting

What are the best steps to respond to a DoD CSO in 2026?

Published April 9, 2026

Tailor to the CSO’s interest, data, factors, and deadline; focus on technical merit and fair pricing; check prototype thresholds if applicable.

What are the best steps to respond to a DoD CSO in 2026 editorial illustration
Gov Contract Finder Editorial Team
•2 min read•Updated August 26, 2026•Information as of August 26, 2026

AI-assisted and automatically checked against the linked primary sources.

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What should a company do first when responding to a CSO?

Start with the solicitation itself. Under DFARS subpart 212.70, the CSO must state the agency’s interest, identify the technical data needed to meet DoD minimum requirements, list the evaluation factors, state the proposal acceptance period, and provide proposal-preparation instructions. A strong response should track those items directly and make the technical solution easy to evaluate. The government’s primary factors are technical merit and importance to agency programs; price must be addressed to the extent appropriate, at minimum so the contracting officer can determine that it is fair and reasonable. The evaluation is done through a scientific, technological, or other subject-matter-expert peer review process, and proposals do not have to be compared against each other because they are not submitted against a common statement of work. The resulting award uses a fixed-price type contract, including a fixed-price incentive contract, and the contracting officer must document that the CSO requirements were met. If a small business would otherwise be selected but is found not responsible, the SBA Certificate of Competency process applies. If the CSO is being used for research and development, the contracting officer must use the CSO procedures together with FAR part 35 and part 235.
[1]

Should a CSO response be written like a traditional best-value proposal?

No. The CSO is evaluated by peer review against the stated factors, and proposals need not be ranked against each other because they are not submitted against a common performance work statement or statement of work.
Sources: [1] Subpart 212.70 - Defense Commercial Solutions Opening | Acquisition.GOV

  • Mirror the CSO’s stated interest, technical-data needs, evaluation factors, and acceptance period.
  • Lead with technical merit and the solution’s importance to the agency’s mission.
  • Include pricing support sufficient for a fair-and-reasonable determination.
  • Treat prototype-project thresholds and approval rules as separate checks if the CSO covers prototype work.
Next Step

Process

  1. 1
    Read the CSO against a checklist

    Confirm the agency’s interest, required technical data, evaluation factors, acceptance period, and submission instructions.

  2. 2
    Build around technical merit

    Show how the solution closes a capability gap or provides an innovative advancement and why it matters to agency programs.

  3. 3
    Support price and contractability

    Provide enough price detail for a fair-and-reasonable review and align the response to the fixed-price contracting rule.

  4. 4
    Prepare for peer review

    Write to the listed factors, not to a common statement of work, because the government may not compare proposals against each other.

  5. 5
    Check overlay rules if the CSO is for prototype work

    If the effort is a prototype project, confirm the written-determination and notification thresholds in 10 U.S.C. 4022.

Prototype-project threshold check

If the CSO is used for a prototype project under 10 U.S.C. 4022, a transaction expected to cost more than $100 million but not more than $500 million requires a written determination by the senior procurement executive or, for DARPA or the Missile Defense Agency, the agency director. Above $500 million, the statute requires a written determination by USD(R&E) or USD(A&S) and 30 days’ written notice to the congressional defense committees.

Sources & Citations

1. Subpart 212.70 - Defense Commercial Solutions Opening | Acquisition.GOV [Link ↗](government site)Accessed 8/26/2026
2. 10 USC 4022: Authority of the Department of Defense to carry out certain prototype projects [Link ↗](government site)Accessed 8/26/2026

Tags

#CMMC#defense-contracting#DoD#FAR#golden-dome#GSA

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Map each proposal section to the CSO notice before submission, then verify whether any prototype-project threshold under 10 U.S.C. 4022 applies.