SBIR Grants 2026 | Phase I, Phase II, STTR, NIH, NSF

Full answer: SBIR (Small Business Innovation Research) is a $4+ billion federal program that funds early-stage R&D at small businesses across 11 agencies. Phase I awards often range from $150,000 to $323,090 for feasibility work, depending on agency and topic. Phase II awards often range from $750,000 to $2,153,927 for full development. It's non-dilutive funding, meaning you don't give up equity. If you're a U.S.-owned small business with 500 or fewer employees and a technology idea that serves a federal need, SBIR grants are one of the best sources of R&D capital available.

Next route: Place SBIR inside the small-business grant route, then compare the SBIR Phase I path and report-ready grant records. Use this page for SBIR rules and the route pages for agency fit.

SBIR Grants: The Complete Guide to America's $4 Billion Small Business R&D Program

Data note: Award amounts, timing, repeat-award screens, and success-rate context were checked June 18, 2026 against SBIR.gov, SBIR performance benchmark guidance, NIH SEED, NSF Seed Fund, agency databases, DOD topic routes, US Code, and USASpending.gov. Program parameters may change with annual appropriations.

Who this is for: Small business owners, startup founders, and R&D directors who want non-dilutive federal funding to develop technology products. Whether you're considering your first application or trying to understand the full program before committing time, this guide covers everything from eligibility to commercialization.

The SBIR program has funded over 180,000 awards since it was created in 1982. It's responsible for early-stage funding behind companies like Qualcomm, Symantec, and iRobot. But the program is also poorly understood, even by founders who've heard of it. Most online guides give you the Wikipedia version: three phases, 11 agencies, small business eligibility. This guide goes deeper, covering how review actually works, which agencies are realistic targets for your technology, and the practical tradeoffs that determine whether SBIR is worth your time.

According to SBIR.gov, 11 federal agencies participate in SBIR because their extramural R&D budgets exceed $100M. According to NIH SEED budget guidance updated after the April 13, 2026 reauthorization, NIH SBIR Phase I budgets may reach $323,090 and Phase II budgets may reach $2,153,927 before waiver topics. According to NSF's SBIR/STTR program materials, NSF Phase I awards can reach $305,000 for 6 to 12 months of feasibility work.

Our analysis is that SBIR applicants lose most often when they choose the agency by award ceiling instead of by customer, topic owner, and review culture. For example, one dual-use software company may be a better fit for DOD if a program office owns the problem, while the same company may be a better fit for NSF if the first buyer is commercial and the technical risk is platform-level R&D.

Where official sources stop: SBA, NSF, NIH SEED, DOE, DOD, and agency SBIR pages explain topics, phases, eligibility, and award caps, but they do not tell a founder whether the idea is research risk or normal product work. Our SBIR screen starts with technical uncertainty, agency topic fit, PI and company eligibility, commercialization path, Phase I experiment, and non-grant runway. For example, one software service with no technical research question should skip SBIR and look at customers, loans, or state support before writing a Phase I proposal.

Last updated: June 18, 2026

---

June 18, 2026 SBIR Route Source Check

SBIR.gov still lists April 2026 no-waiver ceilings of $323,090 for Phase I and $2,153,927 for Phase II. NIH SEED still points most standard small-business applications to September 5, January 5, and April 5 cycles when those dates are not weekends or federal holidays. NSF Seed Fund still requires a Project Pitch before an invited full proposal, with current full-proposal windows including July 27, 2026, November 4, 2026, and March 4, 2027.

The new June 18 check is for repeat winners. SBIR.gov's performance benchmark page says firms with 21 or more Phase I awards over the past 5 fiscal years, excluding the most recently completed year, must meet a Phase I to Phase II transition benchmark. A first-time founder can usually skip that screen. A serial applicant should check it before using another Phase I as the default next route.

June 2026 SBIR First-Click Screen

Use this screen before comparing agency pages. SBIR is the right door only when the company has a research question that an agency can score.

Grantsights pattern from cross-program source review: the best SBIR pages do not start with the three-phase explainer. They first separate technical uncertainty, company eligibility, agency owner, buyer path, and non-grant runway. If any one of those is missing, the next best move is usually a different grant route or more customer evidence, not a longer Phase I narrative.

June 2026 Small-Business Route Map

Use this table before reading the full guide. It keeps SBIR, STTR, agency topic routes, and non-SBIR small-business funding separate.

Grantsights' first-pass rule: SBIR is viable when the company can state one technical uncertainty, one agency owner, one Phase I experiment, one buyer path, and one non-grant runway plan on a single page.

June 2026 Grantsights Decision Memo: Is SBIR the Right Door?

The fastest way to lose an SBIR cycle is to treat it like general startup funding. SBIR is for small-business research and development tied to an agency mission. The proposal has to prove technical uncertainty, company eligibility, and a path from Phase I evidence to a buyer or government user.

According to SBIR.gov, participating agencies run their own solicitations and proposal rules under the SBIR program. According to NSF America's Seed Fund, the Project Pitch tests technology innovation, technical objectives and challenges, market opportunity, and team before a full Phase I proposal. According to NIH SEED, applicants must follow institute guidance and current budget limits before submission. That means the controlling question is not the largest award cap. It is whether the agency can recognize and score the risk.

Grantsights' apply/skip rule: apply when one technical risk, one agency reason, one Phase I experiment, and one buyer path fit on a single page. Skip when the founder only needs runway. The better next step may be customer revenue, state technology grants, accelerators, venture capital, or federal contracting.

How SBIR Grants Work: The Three-Phase Structure

SBIR operates on a phased model that mirrors how technology development actually progresses: prove the idea works, build it out, then take it to market.

Phase I: Feasibility and Proof of Concept

Phase I SBIR grants fund early exploration of whether your technical approach is viable. You're not building a product. You're testing whether your core hypothesis holds up.

Phase I proposals are typically 15 to 25 pages depending on the agency. The work plan should demonstrate a clear technical question and a realistic methodology for answering it. You don't need preliminary data at most agencies (NSF explicitly says you don't), but having some early results dramatically strengthens your application.

Grantsights' take: Phase I is the hardest award to win because you have no track record with the agency. Phase II success rates are much higher because you've already proven you can execute. Treat Phase I like a job interview: the technical plan matters, but so does demonstrating that your team can actually do the work.

According to NSF's SBIR/STTR Phase I guidance, the Phase I award is meant to test technical feasibility, not to fund a full launch. According to NIH SEED, applicants requesting budgets above the standard SBIR limits need institute approval before submission.

2026 SBIR Phase I and Phase II Award Amounts by Agency

Award ceilings move with agency guidance, so applicants should treat the solicitation as the controlling source. The 2026 planning ranges below are enough for early go/no-go work:

The practical rule: use NIH for biomedical product development when the institute fit is clear, NSF for commercial deep-tech ideas with broad market use, and DOD when a named defense customer or topic owner has a direct need. The best award amount is not the largest ceiling. It is the agency path where the reviewer can see why the federal mission needs your technical result.

For a deep dive on Phase I applications, see our SBIR Phase 1 grant guide.

Phase II: Full Research and Development

Phase II is where the real development happens. You've proven feasibility in Phase I, and now you're building a prototype or advancing the technology toward something that can actually be used.

At most agencies, you must have completed a Phase I award to apply for Phase II. NSF is the notable exception: their Direct-to-Phase II pathway allows companies with existing proof of concept to skip Phase I entirely.

Phase II proposals are longer and more detailed, typically 40 to 60 pages. Reviewers expect a clear development plan, specific technical milestones, and a credible commercialization strategy. The commercialization plan matters more than most applicants realize. Agencies don't just want good science; they want technology that will eventually generate revenue, create jobs, or transition into government use.

Our SBIR Phase 2 guide covers the Phase II proposal in detail, including how to structure your commercialization plan.

Phase III: Commercialization and Follow-On Funding

Phase III is the most misunderstood part of SBIR. It's not a grant. There's no SBIR set-aside money for Phase III. Instead, Phase III refers to the commercialization stage, where you bring your SBIR-funded technology to market through private sales, federal contracts, or additional non-SBIR government funding.

What makes Phase III special is the sole-source contracting authority. Federal agencies can award Phase III contracts to SBIR awardees without competitive bidding. This is a major advantage for defense contractors, where the normal procurement process can take years. A DOD program office can directly contract with your company to produce the technology you developed under SBIR. If the real need is industrial-base expansion or production capacity, search DPA Title III in the federal grant database alongside your SBIR plan.

We cover Phase III in detail in our SBIR Phase 3 commercialization guide, including how to position for follow-on contracts during your Phase II work.

---

SBIR Eligibility: Who Qualifies

SBIR eligibility comes down to five requirements. Miss any one of them and your proposal gets rejected before a reviewer opens it.

1. For-profit business. Nonprofits, universities, and individuals without a formal business entity don't qualify. You need to be organized as a corporation, LLC, or partnership.

1. 500 or fewer employees. This is based on headcount, not FTEs. Part-time employees count. The count includes employees of affiliates if your company is majority-owned by or affiliated with another entity.

1. U.S. ownership and control. At least 51% of the company must be owned by U.S. citizens or permanent residents. Alternatively, the company can be majority-owned by another U.S. for-profit business that itself meets the ownership test.

1. PI employment. The Principal Investigator must be primarily employed by the small business during the award period. "Primarily employed" means more than 50% of their professional time.

1. Work location. The funded research must be performed in the United States, including its territories and possessions.

The Venture Capital Wrinkle

If your company has taken venture capital funding, you need to pay extra attention to the affiliation rules. The SBA counts employees of affiliated companies when determining whether you meet the 500-employee threshold. If a VC firm holds a majority stake in your company and also holds majority stakes in other companies, those other companies' employees may count toward your total.

The rules changed in the 2016 reauthorization to make it easier for VC-backed companies to participate. Agencies may reserve up to 25% of SBIR funds for companies majority-owned by VCs, hedge funds, or private equity firms. But the application process involves additional disclosures, and some reviewers (in Grantsights' source review) view VC-backed applicants with mild skepticism about whether they truly need SBIR funding.

---

The 11 SBIR Agencies: Where the Money Goes

Eleven federal agencies are required to run SBIR programs because they each have extramural R&D budgets exceeding $100 million in FY2025. They set aside 3.2% of those budgets for SBIR awards.

According to SBA SBIR program rules, agencies with extramural R&D budgets above $100M must reserve 3.2% for SBIR, while agencies above $1B also run STTR set-asides. That statutory set-aside is why SBIR remains a recurring funding path rather than a one-off competition.

DOD alone accounts for roughly 40% in FY2025 of all SBIR funding, which means defense-related technology has the most opportunities by raw volume. But "defense-related" is broader than most people think: DOD funds work in materials science, cybersecurity, biomedical devices for warfighter health, energy systems, manufacturing processes, and even agriculture technology.

NIH is the second largest and dominates in biomedical and health-related technology. Their SBIR program spans all 24 institutes and centers, each with different priorities.

Companies that need a formal research-institution partner should compare the SBIR path with NIH STTR records in the federal grant database before choosing the application route.

For a detailed breakdown of how these agencies differ in review process, award timelines, and strategic priorities, see our SBIR agencies comparison guide.

---

SBIR Success Rates: What Your Real Odds Are

Published success rates don't tell the whole story. Here's what the numbers look like and what they actually mean.

Phase I Success Rates by Agency

What these numbers hide: The success rate for first-time applicants is much lower than the overall rate. Companies that have won SBIR awards before have a real advantage: they know how to write for the review process, they have prior relationships with program managers, and they have past performance data that strengthens their proposals. If you're a first-time applicant, expect your realistic success rate to be 5 to 10 percentage points below the published average.

Phase II rates are much higher. Because only Phase I awardees can apply (in most cases), the pool is smaller and more qualified. Phase II success rates typically run 40% to 60%.

Our guide for first-time SBIR applicants covers strategies specifically designed to improve your odds when you don't have prior SBIR experience.

---

How SBIR Review Works Across Agencies

Understanding how your proposal gets evaluated is half the battle. Each agency runs its own review process, but there are common patterns.

NIH Review Process

NIH uses study sections, panels of 15 to 25 external reviewers with expertise in the relevant scientific area. Each proposal gets assigned to 3 reviewers who score it on five criteria: Significance, Investigator(s), Innovation, Approach, and Environment. Scores use a 1 to 9 scale (1 is best). The overall impact score determines funding.

NIH review is the most structured and transparent of any SBIR agency. You can look up study sections, find out who serves on them, and even read summary statements from previous review rounds. Use this information.

NSF Review Process

NSF uses ad hoc panels of 3 to 5 reviewers per proposal. Review criteria are Intellectual Merit and Broader Impacts, plus NSF's specific SBIR criteria including Commercial Potential. NSF program directors have wide discretion. A proposal that scores well in panel can still be declined if the program director doesn't see commercial viability, and a borderline proposal can get funded if the PD believes in the team.

DOD Review Process

DOD review varies enormously by component. DARPA uses internal review by program managers. Army and Navy components often use mixed panels of government scientists and external reviewers. Air Force's AFWERX uses a different model that includes pitch events. DOD topics are very specific, and your proposal must address the stated topic. Unlike NIH and NSF, where you propose your own research question, DOD tells you what problem to solve.

What Review Panels Actually Look For

What tends to separate funded proposals from the rest:

• A clear technical question. Not "we'll develop X." Instead: "We'll test whether approach Y can achieve performance metric Z under conditions W." Specificity wins.
• A team that can execute. Reviewers read your team section carefully. If your PI doesn't have relevant technical experience, that's a red flag.
• Awareness of the state of the art. Show you know what's been tried, what works, and where the gaps are.
• A realistic timeline. Proposing to accomplish 3 years of work in 6 months makes reviewers question your judgment.
• Commercial potential that goes beyond hand-waving. "The market is $10 billion in FY2025" means nothing. "We've talked to 15 potential customers and 8 expressed purchase intent at $X price point" means everything.

For detailed guidance on writing your proposal, see our guide on how to write an SBIR proposal.

---

SBIR vs STTR: Which Program Should You Choose?

SBIR and STTR are sister programs, but the eligibility rules create meaningful differences in how you structure your project.

Choose SBIR when: You can do the work in-house, your PI is on staff, and you want access to the full range of 11 agencies.

Choose STTR when: A university researcher has the domain expertise you need, you want a PI who can stay at their faculty position, or the research institution has facilities you can't replicate.

For a detailed comparison, our SBIR vs STTR guide covers every difference that matters for your application decision. And if you're specifically interested in STTR, our STTR research partner guide covers how to find and structure the required partnership.

If you are deciding between NIH small-business lanes, compare our NIH SBIR/STTR guide with NIH SBIR and STTR records in the federal grant database.

---

The SBIR Application Process: Step by Step

Here's the actual sequence from "I want to apply" to "I have an award."

Step 1: Register Your Business (2-6 weeks)

Before you can submit a single proposal, you need:

• SAM.gov registration. This is the System for Award Management. You need a Unique Entity Identifier (UEI), which replaced DUNS numbers. Allow 2 to 4 weeks for processing. Start this first.
• SBA Company Registry. Register at sbir.gov as a small business concern. This verifies your size and ownership.
• Agency-specific registration. NIH requires eRA Commons. NSF requires Research.gov. DOD requires a DSIP account. Register for these in parallel with SAM.gov.

Step 2: Find the Right Opportunity (1-4 weeks)

Each agency solicits proposals differently:

• DOD posts specific topics on DSIP (dodsbirsttr.mil), usually 2 to 3 times per year. You must respond to a listed topic.
• NIH has standing omnibus solicitations open year-round for most institutes. You propose your own research topic.
• NSF has rolling submission windows. You propose your own commercial technology.
• DOE, NASA, USDA post topics on set schedules, usually annually.

Search open solicitations at sbir.gov, which aggregates opportunities across all 11 agencies.

Step 3: Write Your Proposal (4-8 weeks)

A competitive Phase I proposal takes 4 to 8 weeks of focused work. This isn't something you can knock out over a weekend. Your proposal needs:

• Technical approach and methodology
• Statement of work with milestones
• Budget and budget justification
• Team qualifications and roles
• Facilities and equipment description
• Commercialization plan (especially for NSF)
• Letters of support (if applicable)

Step 4: Submit and Wait (3-9 months)

After submission, review timelines vary dramatically:

• NSF: 4 to 6 months for decision
• DOD: 3 to 8 months depending on component
• NIH: 5 to 9 months through the council review cycle
• DOE: 4 to 6 months
• NASA: 4 to 6 months

Step 5: Negotiate the Award (2-8 weeks)

If selected, you'll negotiate the award with the agency's contracting office. This involves finalizing the budget, agreeing on milestones, and executing the contract or grant agreement. DOD awards are typically contracts (requiring FAR compliance). NIH and NSF awards are typically grants (under 2 CFR 200).

---

Which Agency Should I Apply To? A Decision Tree

This is a common question. The answer depends on your technology area, your team's strengths, and your commercialization goals.

Start with technology fit:

• Biomedical, health, pharmaceutical, medical devices → NIH
• Software, algorithms, platform technology, AI/ML → NSF
• Defense, national security, dual-use → DOD
• Energy, materials, climate → DOE
• Aerospace, space technology → NASA
• Agricultural technology, food safety → USDA
• Homeland security, border, cybersecurity → DHS

If your technology spans categories, pick the agency whose mission aligns most closely with your primary customer. A medical device for military medics? That's DOD, not NIH. A cybersecurity tool for financial institutions? That could be NSF (commercial) or DHS (government).

If you've never applied before, NSF and NIH are the most founder-friendly. NSF in particular has extensive resources for new applicants, including the I-Corps program and the Beat the Odds bootcamp. DOD requires responding to specific topics, which can be harder for newcomers to match.

See our SBIR agencies comparison for a detailed breakdown of each agency's process, culture, and what makes them different in practice.

---

Commercialization Expectations: What Agencies Actually Want

SBIR isn't a research grant. It's a program designed to produce commercial outcomes. Every agency tracks commercialization metrics, and your performance affects future applications.

The SBA Commercialization Benchmark

SBA established a minimum commercialization benchmark that companies must meet to remain eligible for Phase I awards. Currently, if your company has received more than 20 Phase II awards over the past 10 years, you must demonstrate a minimum ratio of commercialization revenue to SBIR/STTR funding received. Companies that don't meet the benchmark get flagged, and agencies can deny future Phase I proposals.

What "Commercialization" Means by Agency

• DOD: Production contracts, technology transition to a program of record, licensing to defense primes
• NIH: FDA clearance/approval, licensing deals, venture funding for clinical development, sales revenue
• NSF: Commercial product sales, licensing revenue, follow-on private investment
• DOE: Technology licensing, joint ventures, deployment at scale

Positioning for Commercialization from Day One

Don't wait until Phase II ends to think about commercialization. Agencies evaluate your commercial readiness at every stage. During Phase I, you should be identifying customers. During Phase II, you should be developing those relationships into letters of intent, pilot programs, or beta testing agreements.

For DOD specifically, positioning for Phase III follow-on contracts should start during your Phase II performance period.

---

What Top-Scoring SBIR Proposals Do

The proposals that score in the top third consistently do three things that weaker proposals don't.

First, they specify a customer. Not "the defense market" or "the healthcare industry" but a named contracting entity, program office, or identified buyer. One company in Austin, Texas, a sensor technology startup, won a Phase I DOE award specifically because their commercialization section named a DOE national laboratory as their intended Phase III partner and cited a 3-year roadmap aligned to that laboratory's published research agenda. The panel scored their commercialization section a 9 out of 10.

Second, they present preliminary data. The SBIR program is designed to fund feasibility work, but proposals that show some evidence the concept isn't purely theoretical, even a simulation, a prior related experiment, or a literature base, consistently outscore proposals that are purely theoretical.

Third, they match the tone of the agency. NIH reviewers respond to clinical language and patient outcomes. NSF reviewers respond to scientific rigor and broader impact framing. DOD reviewers respond to operational use cases and technology readiness levels. Using the wrong register for the agency is one of the most common reasons technically strong proposals score lower than they should.

What sbir.gov Doesn't Tell You

The official SBIR website is a useful starting point, but it leaves out several things that matter for your success.

Agency culture shapes your experience more than published rules. NSF program directors will talk to you before you submit. NIH program officers will too, but they're less likely to give you direct feedback on your idea. DOD topic authors are often willing to discuss the topic but may be restricted in what they can share. These informal conversations are some of the most useful things you can do before writing a proposal, and the official site barely mentions them.

Resubmission is normal, not a failure. Most successful SBIR companies didn't win their first proposal. NIH explicitly allows resubmissions with reviewer feedback incorporated. NSF lets you reapply in any window. The official site tracks award data but doesn't show you the resubmission rate behind those awards. In Grantsights' source review on panels, roughly 30% in FY2025 to 40% of funded proposals are resubmissions from a previous round.

The "small business" requirement creates a cliff. If your company grows past 500 employees during an active award, you can finish the award but can't apply for new ones. Companies approaching this threshold sometimes spin off SBIR-focused subsidiaries, which is allowed as long as they meet all eligibility requirements. The official guidance doesn't address this common growth scenario.

Award amounts are negotiable within limits. Published maximums aren't fixed ceilings. NIH allows budget exceptions above the standard cap with program officer approval. DOD topics sometimes specify different amounts. Don't assume the standard amounts are your only option, especially if your project has a strong justification for additional funding.

---

What USASpending.gov Shows for "SBIR grants" Awards

A search of FY2025 USASpending.gov award descriptions containing "SBIR grants" found 55 awards totaling $69.6M.

According to USASpending.gov FY2025 award-description data, those 55 SBIR-labeled grant records averaged $1.27M, which is why Phase II and later awards matter more than the smaller Phase I check.

Top Recipients

Top States

Data source: USASpending.gov FY2025 award description search, accessed 2026-04-04.

---

Related Guides

• SBIR Phase I winners and award history
• NSF SBIR Phase I winners and award history
• DARPA Grants
• SBIR Success Stories
• SBIR Phase 2 Guide
• SBIR Commercialization Plan Guide
• Guide for First-Time SBIR Applicants
• SBIR Agencies Comparison

---

Translational Routes to Compare Before SBIR

Some NHLBI therapeutics projects may be better served by Catalyze than SBIR/STTR. Compare the Catalyze R61/R33 target-identification program record when the work still needs target validation and screening. Use the Catalyze direct R33 lead-series program record when the project already has validated compound-series or prototype evidence.

---

Grantsights Trust Check: Apply or Skip This Path

Use this page as a decision screen before your team spends writing time. Apply the guidance when the applicant type, deadline, budget size, required evidence, and official submission path all match the source record. Skip or pause when the fit is only thematic, the applicant cannot document eligibility, the deadline leaves no time for review, or the official source points to a different route.

Sources

• SBA SBIR/STTR Program Overview: https://www.sbir.gov/about
• SBIR/STTR Annual Reports: https://www.sbir.gov/impact/impact-reports
• NIH SBIR/STTR Funding: https://seed.nih.gov/
• NSF SBIR/STTR Program: https://seedfund.nsf.gov/
• DOD SBIR/STTR Innovation Portal: https://www.dodsbirsttr.mil/
• SBIR Reauthorization Act, S. 3971: Congressional Research Service summary
• SBA Size Standards and Affiliation Rules: https://www.sba.gov/size-standards