March 26, 2026 · SBIR/STTR News · 11 min read

SBIR/STTR Reauthorization 2026: Congress Passes S. 3971 — What Happens Next

After nearly six months of frozen funding, Congress has done its part. Both chambers have passed S. 3971 — the Small Business Innovation and Economic Security Act — with overwhelming bipartisan support. The Senate approved the bill unanimously on March 3, 2026, and the House followed on March 17 with a decisive 345–41 vote under suspension of the rules. The legislation reauthorizes SBIR and STTR programs through September 30, 2031, and introduces the most significant structural changes to the programs in over a decade.

The full text of the bill is available on the Senate Committee on Small Business & Entrepreneurship website (PDF).

But the bill is not yet law. Below, we explain exactly where things stand, what the remaining path to enactment looks like, and what applicants should be doing right now to prepare for the reopening of solicitations.

Where the Bill Stands: The Presentment Question

The SBIR Grant Writers team has been closely watching bill trackers on Congress.gov and GovTrack, and many applicants have noticed that despite passing both chambers on March 17, the bill has not yet been formally presented to the President. This distinction matters, because the President's constitutional ten-day window to sign or veto a bill does not begin until the enrolled bill is physically delivered to the White House.

Here is the procedural sequence that must occur after both chambers pass identical legislation:

The delay between Congressional passage and presentment is not unusual — other bills that passed around the same time, including several from as early as March 4, have also not yet been presented. But the timing is politically significant because of two complicating factors.

The SAVE Act Complication

On March 9, President Trump stated that he would not sign any new legislation until Congress passes the SAVE America Act, a separate bill that would impose new proof-of-citizenship requirements for voter registration. The SAVE America Act passed the House in February 2026, but has stalled in the Senate, where it faces unified opposition and lacks the 60 votes needed to overcome the filibuster. Senate debate on the bill entered its second week on March 24, with no clear path to passage.

This presidential embargo on bill-signing has created an unusual situation for S. 3971 and several other pieces of bipartisan legislation. The SBIR reauthorization bill itself has nothing to do with the SAVE Act — it passed with 345 votes in the House and unanimous consent in the Senate — but it is caught in a broader legislative standoff.

How S. 3971 Can Still Become Law

Despite the President's stated position, the Constitution provides a clear pathway for S. 3971 to become law even without a presidential signature. Under Article I, Section 7, if the President takes no action on a bill within ten days (excluding Sundays) while Congress is in session, the bill automatically becomes law. This is known as an unsigned enactment, and it has historical precedent.

However, there is one risk to watch: the pocket veto. If Congress adjourns before the ten-day window expires and the President has not signed the bill, the bill is considered pocket-vetoed and does not become law. Congress begins its two-week Easter recess on March 27, 2026. Whether the recess constitutes a formal "adjournment" for pocket veto purposes depends on how Congress structures its departure — if either chamber remains in pro forma session, as is common practice, a pocket veto would not apply.

The most likely scenario, given the overwhelming bipartisan support (345–41 in the House, unanimous in the Senate), is that S. 3971 becomes law in early-to-mid April 2026, either through a presidential signature or through the ten-day rule. A veto of a bill that passed with this level of support would be extraordinary and almost certainly overridden by Congress.

How We Got Here: A Timeline of the Lapse

Federal authorization for the SBIR and STTR programs expired on September 30, 2025, when Congress failed to pass reauthorization before the deadline. What followed was the longest disruption in the programs' 43-year history. NIH canceled 23 active solicitations in November 2025. NSF paused Project Pitch submissions in December. The DoD shelved pre-solicitation topic lists that had been months in development. Across 11 federal agencies, more than $4 billion in annual funding was frozen, and roughly 6,000 small businesses that compete for awards each cycle were left without a path forward.

A one-year extension (H.R. 5100) passed the House in September 2025, but broader disagreements over program reforms — particularly around "SBIR mills" and proposal limits — stalled progress in the Senate. The breakthrough came in late February 2026, when Senators Joni Ernst (R-Iowa) and Edward Markey (D-Mass.) announced the compromise that became S. 3971. The Senate passed it by voice vote on March 3, and the House followed with a 345–41 vote on March 17.

Five-Year Reauthorization Through 2031

The bill extends SBIR and STTR program authority through September 30, 2031 — a full five-year window that eliminates the recurring three-year reauthorization cycles that have produced repeated crises. This is the longest extension in the programs' recent history and gives applicants, agencies, and the broader innovation ecosystem meaningful planning certainty.

All related pilot programs are also extended to 2031, including the Phase 0 Pilot Program, the Direct-to-Phase-II pathway, accelerated awards, the commercialization readiness program for civilian agencies, and the due diligence program. Agencies with unspent SBIR/STTR funds at the end of FY2026 are permitted to carry those funds into FY2027.

New: Strategic Breakthrough Awards of Up to $30 Million

The legislation creates a new "Strategic Breakthrough Award" mechanism that allows federal agencies with extramural research budgets exceeding $100 million to allocate up to 0.5% of that budget for awards of up to $30 million to a single small business. This is a substantial departure from the current SBIR award structure and represents a significant new commercialization pathway.

To be eligible for a Strategic Breakthrough Award, a company must hold at least one prior Phase II award under either the SBIR or STTR program. The company must also demonstrate 100% matching funds — sourced from new private capital, new non-SBIR/STTR government funding, or a combination of both. The total period of performance is capped at 48 months, and the agency must complete the contract award within 90 days of receiving a proposal.

For DoD-specific Strategic Breakthrough Awards, there are additional requirements: the technology must have a commitment for inclusion in a program objective memorandum from an official at or above the rank of program acquisition executive, it must meet high-priority military requirements, and at least 20% of the matching funds must come from new DoD funding outside of the SBIR/STTR programs.

Agencies are required to use streamlined processes for Strategic Breakthrough Award proposals and contracting, and must brief Congress within 60 days on whether they intend to use this authority. The eligible agencies include the Departments of Defense, Energy, and Homeland Security, as well as the Environmental Protection Agency, NASA, NIH, NSF, and USDA. Across these eight agencies, the total annual funding pool for Strategic Breakthrough Awards could reach hundreds of millions of dollars.

First solicitations for Strategic Breakthrough Awards are expected in late FY2026 (July–September 2026) for DoD, with other agencies likely following in FY2027 as they develop evaluation criteria, matching fund verification processes, and milestone reporting frameworks.

Proposal Submission Caps

Beginning in FY2027, every federal agency that participates in the SBIR or STTR program must set a limit on the maximum number of proposals a single company may submit per fiscal year. Agencies can structure this cap on a fiscal year, solicitation, or topic basis.

This provision directly addresses Congressional concern over "SBIR mills" — companies that have accumulated large numbers of awards — by limiting how many proposals any single entity can submit. Waivers are available on a topic-by-topic basis for time-sensitive and mission-critical solicitations, but they require written justification from the SBIR/STTR program director, approval from the relevant undersecretary, and are limited to no more than 5% of an agency's total topics per fiscal year.

Agencies must report their proposal limits and methodology to the Senate Committee on Small Business and Entrepreneurship and the relevant House committees within 30 days of setting or changing these caps. For companies that have historically submitted large volumes of proposals across multiple agencies, this provision requires a more strategic approach to selecting which solicitations to pursue.

Strengthened Security and Foreign Due Diligence Requirements

The bill significantly expands the security screening criteria that agencies must apply when evaluating SBIR and STTR applicants. Companies with connections to entities on eight specific federal watchlists may now be denied awards, and agencies have expanded authority to evaluate foreign ownership, affiliations, technology licensing agreements, and business relationships with individuals or entities in foreign countries of concern.

The eight watchlists referenced in the legislation include the UFLPA Entity List (DHS), the Non-SDN Chinese Military-Industrial Complex Companies List (Treasury), the Section 889 Prohibition List (DoD), the Chinese Military Companies List (DoD), the Military End User List (Commerce), the Entity List (Commerce Bureau of Industry and Security), the FCC List of Equipment and Services, and the CBP Withhold Release Orders and Findings List.

Due diligence assessments now explicitly require agencies to evaluate cybersecurity practices, patent analysis, employee analysis, foreign ownership including financial ties and obligations, foreign affiliations of key personnel, investment relationships with foreign entities, and technology licensing agreements or joint ventures with foreign entities.

One significant process improvement: agencies must now provide notification to applicants when their application has been denied on the basis of a security determination, including identification of the basis for that determination. A denial does not prohibit the company from being eligible for awards in future cycles.

STTR applicants may face particularly heightened scrutiny, as the due diligence requirements extend to partner nonprofit research institutions and cover all individuals involved in the STTR partnership.

Phase III Improvements and Acquisition Workforce Training

The legislation addresses a long-standing bottleneck in the SBIR/STTR pipeline: the transition from Phase II research into Phase III production and deployment. S. 3971 requires the SBA, in coordination with the Secretary of Defense and the Administrator of General Services, to establish training programs for contracting officers and acquisition workforce personnel on Phase III awards, data rights, and sole-source contracting authorities.

Federal agencies must also develop simplified and standardized procedures and model contracts for Phase I, Phase II, and Phase III awards, and issue standardized solicitation provisions that clearly define what information small businesses need to provide to establish Phase III eligibility. Additionally, agencies must create mechanisms to give small businesses direct access to program and requirements offices that may purchase their technology under Phase III.

Technical and Business Assistance (TABA) Enhancements

TABA funding — which supports market research, commercialization planning, IP strategy, and other business development activities — receives meaningful improvements under the new law. Phase I awardees may now use up to $6,500 per project for TABA services, while Phase II awardees may use up to $50,000 per project. Importantly, small businesses now have the autonomy to select their own TABA vendors or to use the funding to hire or train staff directly.

Eligible TABA activities now explicitly include cybersecurity assistance and screening for potential foreign involvement in technology development or commercialization. Award recipients with I-Corps programs also gain the option to use TABA funds for I-Corps teams courses, bootcamps, or equivalent training programs.

Improved Data Collection and Transparency

The bill requires the SBA database and the Federal Procurement Data System to track additional award categories including Direct-to-Phase-II awards, subsequent Phase II awards, Strategic Breakthrough Awards, Phase III prime contracts, and Phase III subcontracts. Contracting officers must now reference prior SBIR/STTR contract identification numbers when recording Phase II or Phase III contracts that follow from earlier SBIR/STTR work. This creates a clearer paper trail connecting initial SBIR research to downstream production and deployment.

Expected Agency Solicitation Timelines

While agencies cannot formally issue new solicitations until S. 3971 is signed into law (or becomes law without signature), many have been staging their pipelines in anticipation. Based on available guidance and agency communications, here is the expected timeline for the first post-reauthorization solicitations:

Department of Defense (DoD): Best positioned to publish first. Topic development teams across Army, Navy, Air Force, Space Force, DARPA, and MDA continued preparing solicitations throughout the freeze. Pre-solicitation topic lists drafted in late 2025 are being refreshed. New Broad Agency Announcements are expected in April 2026. NASA is also transitioning to a new rolling Broad Agency Announcement format with phased appendix releases for Program Year 2026. For DoD-specific proposal guidance, deadlines, and AFWERX/DARPA resources, see our dedicated defense site at defensegrantwriters.com.

National Institutes of Health (NIH): The Center for Scientific Review maintained its study section infrastructure throughout the lapse, positioning NIH to restart peer review rapidly. New Notices of Funding Opportunity (NOFOs) are expected in April or May 2026, with compressed review windows to make up lost time.

National Science Foundation (NSF): NSF's rolling Phase I submission process is mechanically simpler to restart than topic-based solicitations. The intake portal is expected to reopen shortly after enactment, likely in April or May 2026.

Department of Energy (DOE) and NASA: Both run structured solicitations with defined topics and submission windows. New solicitations are expected by mid-2026.

Smaller agencies (USDA, EPA, DHS, NOAA, DOT, ED): Will restart on varying timelines through summer 2026, depending on each agency's internal readiness and topic development process.

Strategic Breakthrough Awards: These will take the longest to operationalize. Agencies need to establish evaluation criteria, matching fund verification processes, and milestone reporting frameworks for a program that has never existed before. First solicitations are expected in Q4 FY2026 (July–September) for DoD, with other agencies following in FY2027.

What Applicants Should Do Now

The agencies have spent six months staging their solicitation pipelines and are ready to move quickly once authorization is restored. Companies that prepared during the lapse will have a decisive advantage in what is expected to be an intensely competitive first cycle. Here are the concrete steps to take right now:

Review your foreign affiliations and ownership structure. The expanded security screening requirements mean that connections to entities on any of the eight specified watchlists could result in a denied application. Conduct an internal audit of your company's ownership, personnel affiliations, investment relationships, and technology licensing agreements now, before submitting your next proposal.

Develop a strategic proposal submission plan. With per-company proposal caps taking effect in FY2027, the days of submitting proposals across every possible topic are numbered. Identify your highest-priority agencies and topics, and allocate your limited submissions accordingly.

Assess your eligibility for Strategic Breakthrough Awards. If your company has at least one Phase II award and can demonstrate 100% matching funds, this new $30 million funding pathway could be transformative. Begin modeling your matching fund strategy now — the requirement means committed capital must be in place before you apply. Early engagement with private investors and non-SBIR government program offices will be critical.

Prepare your proposal materials. Agencies are expected to release new solicitations within weeks of enactment. DoD is likely to move first, followed by NIH and NSF. Having your Project Pitch, Specific Aims, technical narrative, and budget materials ready in advance will allow you to respond quickly when opportunities open.

Watch for compressed deadlines. The six-month backlog means agencies will likely publish accelerated solicitation schedules to make up lost ground before the fiscal year ends on September 30, 2026. Response windows may be shorter than in previous cycles.

Monitor agency communications. SBIR Grant Writers maintains active communication channels with Program Directors at NIH, NSF, DoD, and other federal agencies. We are tracking the timeline for new solicitations across all 11 SBIR/STTR agencies and will provide updates as they become available. Contact us for the latest guidance on agency-specific timelines and requirements.

The Bottom Line

Congress has delivered with a resounding bipartisan vote. The Small Business Innovation and Economic Security Act represents the most significant set of changes to the SBIR/STTR programs in over a decade. The five-year extension through 2031 provides welcome stability, the new Strategic Breakthrough Awards open a $30 million commercialization pathway, and the proposal caps and expanded security requirements will reshape how companies approach the program.

The final step — formal enactment — is now a question of timing rather than outcome. Whether the President signs S. 3971 or it becomes law through the ten-day rule, reauthorization is expected in early-to-mid April 2026. For applicants, the message is clear: the reopening of solicitations is imminent, and the companies that are prepared to submit on day one will have a meaningful competitive advantage after six months of pent-up demand.

SBIR Grant Writers is actively monitoring developments and preparing our clients for the next wave of solicitations. If you need help positioning your company for the post-reauthorization landscape — whether for an NSF Project Pitch, an NIH Phase I application, or a DoD proposal — book a free 30-minute consultation with one of our domain experts.

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This article will be updated as presidential action occurs and agency solicitations are released. Last updated: March 26, 2026.

Sources:

[1] S. 3971 — Small Business Innovation and Economic Security Act (Full Text, PDF), Senate Committee on Small Business & Entrepreneurship

[2] Senate Committee Press Release, March 3, 2026

[3] House Committees Joint Statement on Passage of S. 3971, March 17, 2026

[4] S. 3971 Bill Status, GovTrack.us

[5] S. 3971 Enrolled Bill Text, GovInfo

See also: Agency Restart Timeline: When Each Agency Will Reopen (March 28) | Original Reauthorization Analysis (March 16) | SBIR Grant Writing Services Compared (2026) | Why AI-Generated SBIR Proposals Are Failing