SBIR Grants: 7 Steps From Eligibility to a Funded Proposal

TL;DR: SBIR grants are US federal awards for small businesses doing research and development with commercial potential, and they take no equity. Funding runs in phases: Phase I tests feasibility, Phase II builds the technology, and Phase III commercializes it with other money. You need a for-profit US small business that is majority US-owned, with a principal investigator primarily employed by the company.

✅ Verified: November 8, 2026 · Source: sbir.gov, seedfund.nsf.gov, sba.gov · Next review: February 8, 2027Program details change often. Confirm eligibility, amounts, and deadlines on each official program page before applying.

SBIR grants are the largest pool of early-stage, non-dilutive funding for US technology startups. Federal agencies set aside part of their research budgets for small businesses, and each year they fund companies working on everything from AI and software to energy, health, defense, and space. For a two-person team with a hard technical problem, an SBIR award can fund months of R&D without selling a single share.

The challenge is that SBIR feels built for insiders. Every agency has its own topics, portal, budget rules, and calendar. Registrations take weeks. And in late 2025 the program lapsed for several months before Congress reauthorized it in 2026, which left many founders unsure what still applies. ShipGrants tracks SBIR and other federal programs alongside 1,500+ grants, prizes, fellowships, and credits.

This guide explains how SBIR grants work today, who qualifies, what each phase pays, how to choose an agency, and a seven-step path from eligibility check to submitted proposal.

What are SBIR grants?
Who is eligible for SBIR grants?
How do the SBIR phases work?
How much money do SBIR grants give?
Which agencies offer SBIR grants?
How to apply for SBIR grants: 7 steps
How do you write a strong SBIR Phase I proposal?
What do SBIR reviewers look for?
What mistakes sink SBIR grants applications?
SBIR grants vs STTR vs other funding
Bottom line

⚡ Key takeaways

SBIR grants are federal R&D awards for US small businesses; they are non-dilutive and do not need to be repaid.
Eligibility basics: for-profit, US-based, 500 or fewer employees, at least 51% owned by US citizens or permanent residents, and a PI primarily employed by the company.
Phase I tests feasibility, Phase II funds full development, and Phase III is commercialization paid for by other sources.
Award sizes and rules differ by agency; for example, NSF lists Phase I awards of up to $305,000.
Register on SAM.gov and SBIR.gov early, because registrations can take weeks.

What are SBIR grants?

Direct answer: SBIR (Small Business Innovation Research) grants are federal awards that fund US small businesses to research and develop technologies with commercial potential. Participating agencies reserve a share of their R&D budgets for the program. Awards take no equity and are not loans, but they come with research obligations, reporting, and agency-specific rules.

The program is coordinated by the Small Business Administration and run by the participating agencies themselves. Each agency decides its topics, award sizes, and review process. Some agencies issue grants, while others, especially in defense, often use contracts. In everyday language, founders call all of them SBIR grants, and we do the same here.

Definition: SBIR grants: federal research and development awards reserved for US small businesses, delivered in phases (feasibility, development, commercialization) by participating agencies. Its sister program, STTR, requires a formal partnership with a research institution.

Why SBIR grants matter for startups

Most early-stage money for deep technology is either equity or nothing. SBIR grants fill that gap. They fund the riskiest stage, when the technology may not work yet, and they let founders keep ownership. A Phase I or Phase II award also signals to investors and customers that federal reviewers judged the technology credible.

What changed in 2026

The program’s authority lapsed in late 2025, which paused new awards for several months. Congress reauthorized SBIR and STTR in April 2026 through 2031. Agencies then restarted their solicitations on different timelines, and the reauthorization added changes such as per-firm proposal limits and a new post-Phase II award category for larger follow-on projects. Check each agency’s current solicitation for the rules that apply to you. If you planned an application before the lapse, re-read the new solicitation rather than relying on older guides about SBIR grants, since dates and limits may have moved.

Who is eligible for SBIR grants?

Direct answer: To qualify for SBIR grants, your company must be a for-profit business located in the US, have 500 or fewer employees including affiliates, and be at least 51% owned and controlled by US citizens or permanent residents (with some agency-specific exceptions for investor-owned firms). The principal investigator must be primarily employed by the company during the award.

These are the core rules published by the program and repeated in agency solicitations.

For-profit and US-based. The business must be organized for profit, with its place of business in the United States.
500 or fewer employees. This includes affiliates; full-time, part-time, and leased staff all count.
US ownership. At least 51% owned and controlled by US citizens or permanent residents, or by qualifying small businesses. Some agencies allow majority venture-capital ownership; others do not.
Principal investigator. For SBIR, the PI must be primarily employed (more than half time) by the small business during the project.
Work in the US. Research is generally performed in the United States.

Can a one-person startup apply?

Yes. A company with a single employee can apply, as long as that person meets the PI rules and the company meets the other requirements. Many first-time SBIR awardees are tiny teams.

Can non-US founders get SBIR grants?

Only if the company meets the US ownership and control rules. Owning a US LLC is not enough on its own if most ownership sits with non-US persons who are not permanent residents. Foreign citizens can often work on the project, but they do not count toward the 51% threshold. Founders outside the US should look at national programs in their own country instead.

Rule: The SBIR eligibility check. Before reading any topic, confirm four facts: US for-profit entity, 500 or fewer employees with affiliates, 51%+ US ownership, and a PI who will be primarily employed by your company. If any answer is no, stop and fix it or choose another program.

How do the SBIR phases work?

Direct answer: SBIR grants run in three phases. Phase I funds a short feasibility study, Phase II funds full research and development for successful Phase I companies, and Phase III is commercialization, paid for by private capital, sales, or non-SBIR government contracts. Some agencies also offer Fast-Track or direct-to-Phase II options.

Phase I: feasibility

Phase I asks one question: can this technology work, and is it worth pursuing? Projects typically last from several months to around a year. You define technical objectives, run the key experiments or build the prototype, and show results.

Phase II: development

Phase II funds the real build, usually over about two years. It is normally open to companies that completed Phase I with the same agency, although some agencies allow direct-to-Phase II applications when feasibility is already proven elsewhere. Commercialization planning carries more weight here, so many teams use Phase I time to talk to customers as well as to build.

Phase III: commercialization

Phase III has no dedicated SBIR money. It covers work derived from your SBIR project and funded by other sources: customers, investors, or government contracts. Phase III status can make it easier for agencies to contract with you later.

Phase	Goal	Typical length	Funding source
Phase I	Prove technical feasibility	Several months to ~1 year	SBIR set-aside
Phase II	Full R&D and prototype	About 2 years	SBIR set-aside
Phase III	Commercialize	Open-ended	Private capital, sales, other federal money

How much money do SBIR grants give?

Direct answer: SBIR award sizes depend on the agency and the specific solicitation. Phase I awards are often in the low-to-mid hundreds of thousands of dollars; NSF, for example, lists Phase I awards of up to $305,000. Phase II awards are larger, commonly up to around $2 million depending on the agency. Always check the “award amount” section of the solicitation you apply to.

The SBA sets guideline amounts, and agencies can work within or, in some cases, above them with justification. That is why founders see different numbers online. The solicitation you apply to is the only number that matters for your budget.

The 2026 reauthorization also created a larger post-Phase II category for companies that already hold Phase II awards and can bring matching funds. It does not affect your first proposal, but it shows how far an SBIR track can go for companies that keep delivering.

Note: Award sizes and rules change with each solicitation. NSF’s Phase I figure was checked on November 8, 2026. Confirm current amounts, deadlines, and eligibility on the official agency page before you apply.

Which agencies offer SBIR grants?

Direct answer: Eleven federal agencies participate in SBIR, and five also run STTR. The largest for startups include the Department of Defense, the National Institutes of Health (part of HHS), the National Science Foundation, the Department of Energy, and NASA. Each agency publishes its own topics, calendar, portal, and award sizes.

Choose an agency by fit, not by award size. Ask who needs your technology most. A defense application belongs with DoD; a medical one with NIH; a broadly commercial, founder-defined innovation often fits NSF’s open topics.

Agency	Style	Good fit for	Note
NSF (America’s Seed Fund)	Grants, broad topics	Commercial deep tech, AI, software with technical risk	Project Pitch required first
NIH / HHS	Grants	Health, biotech, medical devices, digital health	Institute priorities matter
DoD (Army, Navy, Air Force, others)	Mostly contracts, defined topics	Defense and dual-use tech	Topics are very specific
DOE	Grants, defined topics	Energy, climate, advanced materials	Topic-driven calls
NASA	Contracts, defined topics	Aerospace and space tech	Calls released in rounds

NSF: the most founder-friendly entry point

NSF’s program, branded America’s Seed Fund, focuses on commercial impact and accepts a wide range of technologies. Before submitting a full proposal, you send a short Project Pitch and wait for an invitation. That step saves time because you learn early whether your idea fits. Our NSF SBIR guide covers it in detail.

Software and AI teams

Software is not excluded from SBIR grants, but the technical risk must be real. A new algorithm, a novel AI method, or a hard data problem fits; a standard web app with ordinary features does not. See SBIR for software and SBIR for AI.

How to apply for SBIR grants: 7 steps

Direct answer: Confirm eligibility, register on SAM.gov and SBIR.gov, pick the right agency and topic, talk to the program manager if allowed, write the proposal around technical risk and commercial impact, build a compliant budget, and submit early through the agency’s portal. Start registrations at least several weeks before the deadline.

Confirm eligibility. Run the four-fact check: US for-profit, 500 or fewer employees, 51%+ US ownership, eligible PI.
Register early. Get a Unique Entity ID on SAM.gov, register your company on SBIR.gov, and create accounts on the agency portal you will use. Our SAM registration guide explains the steps.
Choose agency and topic. Read current solicitations and match your technology to a topic, or to an open topic at agencies like NSF.
Talk to the program office. Many agencies allow questions before submission, within specific windows. A short conversation can save a rejected proposal.
Write the proposal. Lead with the technical problem, your innovation, the objectives, the work plan, the team, and the commercial opportunity.
Build a compliant budget. Follow the agency’s cost rules, explain each line, and connect costs to objectives.
Submit early. Portals slow down near deadlines, and registrations can fail at the last minute.

How do you write a strong SBIR Phase I proposal?

Direct answer: A strong Phase I proposal for SBIR grants states one clear technical problem, defines measurable objectives, explains why the approach is innovative and risky, lays out a realistic work plan, and shows a team that can execute it. Commercial potential comes next, backed by evidence of real customer need.

Most agencies ask for similar building blocks, even if the headings differ. Plan your writing around them:

Technical problem and opportunity. What cannot be done today, and why does it matter?
Innovation. What is new about your approach compared with existing solutions?
Objectives. Three to five measurable goals the Phase I will reach.
Work plan. Tasks, methods, timeline, and who does what.
Team and facilities. Why your PI and team can deliver, plus the tools or partners you need.
Commercial potential. Customers, market, business model, and the path from Phase II to revenue.
Budget. Costs tied to tasks, following the agency’s rules.

Write for a reviewer who is an expert in the field but has never seen your product. Avoid jargon that only your team uses, define acronyms, and make the objectives easy to find. Many founders keep a reusable master document with these sections, then tailor it to each agency’s format. That approach also helps when you apply for other non-dilutive programs, because the same core story appears in most grant applications.

Finally, plan for review time. Ask a colleague or advisor who knows SBIR grants to read your draft a week before submission. Fresh eyes catch missing objectives, vague claims, and budget lines that do not match the work plan.

What do SBIR reviewers look for?

Direct answer: Reviewers look for significant technical innovation with real risk, a clear and feasible work plan, a qualified team, and a credible path to commercial impact. They also check compliance with the solicitation. Proposals that read like product marketing, or that skip the technical risk, rarely score well.

Think of SBIR grants as funding a research question, not a product launch. Reviewers want to know what is technically unknown today and how your Phase I will answer it. Measurable objectives help: “achieve 95% accuracy on dataset X at under Y milliseconds per request” beats “build an AI engine.”

Commercial impact matters too, especially at NSF and in Phase II. Show who the customer is, how big the problem is, and why your team can bring the technology to market. Letters from potential customers or partners can strengthen this section. If you have pilots, early users, or signed letters of intent, mention them with specific numbers. Reviewers of SBIR grants see many proposals that promise large markets; concrete evidence of demand stands out.

Mistake: Writing an investor pitch instead of a research plan. Investors want market size and growth. SBIR reviewers want technical objectives, methods, and risks, then commercial potential. Lead with the research.

What mistakes sink SBIR grants applications?

Direct answer: The most avoidable mistakes are late registrations, applying to a topic that does not match your technology, weak or vague technical objectives, budgets that ignore agency rules, a PI who does not meet the employment requirement, and ignoring the solicitation’s formatting and page limits. Each of these can end an application before the science is even judged.

Registering at the last minute. SAM.gov and agency portals can take weeks.
Forcing a topic match. Reviewers notice when a proposal bends to fit a topic it does not really address.
No measurable objectives. “Improve performance” cannot be evaluated; numbers can.
Ignoring cost rules. Some costs are not allowed, and indirect cost rates need support.
PI problems. A PI with a full-time job elsewhere usually fails the SBIR rule.
Formatting errors. Page limits, fonts, and required sections are enforced.

None of these require a bigger team or more money to fix. They require time and a checklist, which is why founders who start SBIR grants preparation early tend to submit stronger proposals.

SBIR grants vs STTR vs other funding

Direct answer: SBIR lets the small business run the research with its own PI. STTR requires a formal partnership with a US research institution, which performs part of the work. Both are non-dilutive. Compared with venture capital, SBIR grants are slower and more restricted but keep your ownership intact.

Option	Equity?	Who does the work	Speed	Best for
SBIR	No	Small business, PI employed there	Months	Companies with in-house R&D
STTR	No	Small business + research institution	Months	University spinouts, lab partnerships
State programs	No	Small business	Weeks–months	Local companies, matching funds
Venture capital	Yes	Your company	Weeks–months	Fast scaling with market risk

Remember that the SBA itself does not give grants for starting or expanding a business; its grant role is mostly through partners and programs like SBIR. Our SBA grants guide explains the difference. For the full picture of money that takes no equity, see non-dilutive funding.

Bottom line

SBIR grants are one of the best non-dilutive opportunities for US startups with real technical risk. Check the four eligibility facts, register early, choose the agency that needs your technology, and write a proposal that leads with the research question. Expect months, not weeks, and plan your runway accordingly.

If you are not eligible, or want more options alongside SBIR, ShipGrants lists 1,500+ grants, prizes, fellowships, and credits in one filterable spreadsheet, and the free funding kit helps you prepare your first application.

💡 Tip: Understanding SBIR grants is one important piece of getting funded, but finding the right program is half the battle. ShipGrants puts 1,500+ grants, prizes, fellowships, and cloud/AI credits in one filterable place — with eligibility, funding type, and deadlines. Explore the database

FAQ: SBIR grants

What is an SBIR grant?

An SBIR grant is a federal award that funds a US small business to research and develop a technology with commercial potential. SBIR stands for Small Business Innovation Research. Participating agencies reserve part of their R&D budgets for the program and publish topics or open calls.

The award takes no equity and is not a loan. In return, the company performs the proposed research, follows federal cost rules, and reports on results. Funding comes in phases: Phase I for feasibility, Phase II for full development, and Phase III for commercialization paid by other sources. Some agencies issue grants and others issue contracts, but founders commonly call all of them SBIR grants. Rules differ by agency, so always read the specific solicitation before you start writing, and confirm deadlines on the agency site.

How do SBIR grants work?

You find an agency topic or open call that matches your technology, submit a proposal that describes the technical problem, your innovation, and your plan, and the agency reviews it against published criteria.

If you win Phase I, you run a feasibility project. Successful Phase I companies can then compete for a larger Phase II award to develop the technology fully. Phase III is commercialization with non-SBIR money, such as sales, investment, or government contracts. Throughout, you follow federal rules on costs, reporting, and the principal investigator’s employment. The process takes months, so start registrations and drafting well before the deadline. Many teams prepare a short version first, such as NSF’s Project Pitch, to test fit before writing the full proposal. That small step can save weeks. Track every submission and result in one place.

How much are SBIR grants?

It depends on the agency and solicitation. Phase I awards are often in the low-to-mid hundreds of thousands of dollars; for example, NSF lists Phase I awards of up to $305,000. Phase II awards are larger, commonly up to around $2 million depending on the agency.

The SBA publishes guideline amounts, and agencies set their own limits within the rules. The number in the solicitation you apply to is the one that counts. Figures were checked on November 8, 2026; confirm current amounts on the agency’s official page. Your budget must also follow the agency’s cost rules, including limits on subcontracting and how indirect costs are calculated. A realistic budget that matches the work plan reads better to reviewers than one that simply asks for the maximum. Reviewers check that every cost has a purpose.

Who is eligible for SBIR grants?

A company is generally eligible if it is a for-profit business located in the US, has 500 or fewer employees including affiliates, and is at least 51% owned and controlled by US citizens or permanent residents (or by qualifying small businesses).

For SBIR, the principal investigator must be primarily employed by the company during the project, meaning more than half of their working time. Some agencies allow majority ownership by venture capital firms, while others do not. Research is generally performed in the United States. Check the exact rules in each agency’s solicitation, because small details, such as affiliation with a larger company, can change eligibility.

Can a startup with no revenue get SBIR grants?

Yes. SBIR grants are designed for early-stage technology, and many awardees have no revenue yet. Reviewers care about technical innovation, a credible plan, the team, and commercial potential, not current sales.

That said, you still need a registered US company, the required registrations, and a principal investigator who meets the employment rule. Showing early signs of demand, such as letters from potential customers, pilot interest, or a clear market analysis, strengthens the commercial section, especially at agencies that weigh commercial impact heavily, such as NSF. Many companies use SBIR grants precisely because they fund the stage before revenue, when private investors see too much technical risk.

Do SBIR grants have to be repaid?

No. SBIR grants are not loans, and you do not repay them if you follow the award terms. You also give up no equity in your company.

You do have obligations: perform the proposed work, spend funds according to federal cost rules and the approved budget, keep records, and submit reports. Misusing funds or failing to perform can lead to penalties, including repayment. Read the award terms carefully, and ask the agency’s grants office about anything unclear. Keep timesheets and receipts organized from day one, because agencies can audit how funds were used. This is general information, not legal advice.

What is the difference between SBIR and STTR?

Both programs fund small business R&D, but STTR requires a formal partnership with a US research institution, such as a university or nonprofit research lab, that performs a minimum share of the work.

In SBIR, the principal investigator must be primarily employed by the small business. In STTR, the PI can be employed by either the small business or the research institution. STTR suits university spinouts and teams that depend on lab partners; SBIR suits companies that can do most of the research in-house. Fewer agencies run STTR than SBIR, so check which agencies offer the program you want before choosing a partner.

How long does it take to get SBIR funding?

Expect several months from submission to award, and more if you count preparation. Registrations on SAM.gov and agency portals can take weeks on their own.

Review times vary by agency and solicitation. Some agencies release topics on fixed schedules a few times a year, while others have rolling or multiple deadlines. Contract negotiation adds time after selection. Plan your runway so you do not depend on a single award arriving by a specific date, and consider applying to more than one agency if your technology genuinely fits more than one topic. Read each agency’s rules on submitting similar proposals, since duplicate funding for the same work is not allowed.

Can foreigners or non-US founders get SBIR grants?

Only if the company meets the ownership and control rules: at least 51% owned and controlled by US citizens or permanent residents, or by qualifying small businesses. A US-registered LLC owned mainly by non-US persons does not qualify on that basis alone.

Foreign citizens can often work on SBIR projects, but they do not count toward US ownership, and the PI must meet the employment rules. If you are a non-US founder, look at innovation grants in your own country or region, plus global programs such as cloud credits, prizes, and fellowships, which do not have US ownership requirements. Many European countries run their own innovation programs with similar phased structures.

Are SBIR grants good for software and AI startups?

They can be, if the work involves genuine technical risk. Reviewers fund research questions: new algorithms, novel AI methods, hard data problems, security challenges, or software that enables a new capability. They do not usually fund standard app development or marketing.

AI and software appear in many agency topics, and NSF accepts a broad range of technologies through its open approach. Frame your proposal around what is technically unknown and how your Phase I will answer it. Show measurable objectives and a clear path to customers. Teams that describe a product roadmap instead of a research plan tend to score poorly. Our SBIR for software and SBIR for AI guides explain how to frame these projects.

Do I need SAM.gov registration for SBIR grants?

Yes, in practice. Federal awards require a Unique Entity ID from SAM.gov, and you also register your company with the SBA through SBIR.gov. Agencies then use their own submission portals.

Registrations can take weeks, especially if your company details do not match official records exactly. Start them as soon as you decide to apply, long before the deadline. SAM.gov registration is free; be cautious of anyone charging fees for it. Our SAM registration guide walks through the steps and common errors, such as mismatched legal names or addresses. Keep your login details and UEI in a safe place, because you will reuse them for every federal application, including future SBIR grants.

Where can I find SBIR topics and deadlines?

SBIR.gov lists opportunities across agencies, and each agency publishes its own solicitations, topics, and deadlines on its program site. Following the agencies that fit your technology is the most reliable way to stay current.

Because agencies release topics on different schedules, many founders miss windows. Keep one calendar with every relevant agency and deadline, and add other non-dilutive programs, such as state grants, prizes, and credits, to the same view. ShipGrants includes federal programs alongside 1,500+ grants, prizes, fellowships, and credits, with deadline information and Telegram alerts for buyers. Whatever source you use, confirm every date on the official solicitation before you plan your work.

Stop hunting for funding across Google, government portals, and half-dead databases.

ShipGrants gives you 1,500+ grants, prizes, fellowships, and free cloud/AI credits in one filterable spreadsheet — each with funding type, eligibility, and deadline — plus a 21-page application playbook, ready-to-use templates, and Telegram deadline alerts. Find the programs you actually qualify for and apply with a system, not guesswork.

▶ See the database · Get the free funding kit

About the author

Volodymyr Rudyi is the founder of ShipGrants and an online entrepreneur based in Europe who runs a US-registered company, so he works with both the US and European funding systems. He built ShipGrants because funding programs for builders are scattered across government portals, corporate pages, and outdated lists. Before ShipGrants, he created TrafficTikTok, an education platform about affiliate marketing and online business, and runs a YouTube channel about building income online. He writes builder-to-builder: what each program actually requires, how to check eligibility, and how to apply with a system instead of guesswork.

Follow ShipGrants: Instagram · TikTok · YouTube · Facebook · X

Want to earn by sharing ShipGrants? Our affiliate program pays 10% on every sale you refer.

Update log

Last updated: November 8, 2026 — first published; SBIR eligibility rules, 2026 reauthorization status, and NSF Phase I amount verified on official and agency sources.

Sources

Methodology: this guide is based on SBIR.gov program materials, agency solicitations, and the ShipGrants research database. Figures were checked on November 8, 2026. Sources: SBIR.gov · SBIR.gov tutorials: eligibility · NSF America’s Seed Fund eligibility · SBA: small business grants · SAM.gov

ShipGrants Team

The ShipGrants team researches non-dilutive funding for software founders: grants, prizes, fellowships and free cloud and AI credits across the US, Europe and worldwide. Every program in our database links to its official page.

Table of contents

⚡ Key takeaways

What are SBIR grants?

Why SBIR grants matter for startups

What changed in 2026

Who is eligible for SBIR grants?

Can a one-person startup apply?

Can non-US founders get SBIR grants?

How do the SBIR phases work?

Phase I: feasibility

Phase II: development

Phase III: commercialization

How much money do SBIR grants give?

Which agencies offer SBIR grants?

NSF: the most founder-friendly entry point

Software and AI teams

How to apply for SBIR grants: 7 steps

How do you write a strong SBIR Phase I proposal?

What do SBIR reviewers look for?

What mistakes sink SBIR grants applications?

SBIR grants vs STTR vs other funding

Bottom line

FAQ: SBIR grants

What is an SBIR grant?

How do SBIR grants work?

How much are SBIR grants?

Who is eligible for SBIR grants?

Can a startup with no revenue get SBIR grants?

Do SBIR grants have to be repaid?

What is the difference between SBIR and STTR?

How long does it take to get SBIR funding?

Can foreigners or non-US founders get SBIR grants?

Are SBIR grants good for software and AI startups?

Do I need SAM.gov registration for SBIR grants?

Where can I find SBIR topics and deadlines?

Stop hunting for funding across Google, government portals, and half-dead databases.

About the author

Update log

Sources

Find funding that fits your project

Similar Posts