How to Apply for SBIR Grants in 2026: The Complete Guide

March 4, 2026 · 19 min read

Granted Team

What SBIR and STTR Actually Fund

The Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) programs exist for a single purpose: channeling federal R&D dollars to small businesses that build things the government and the market need. Together, these programs distribute roughly $4 billion annually across 11 federal agencies, making them the largest source of early-stage technology funding in the United States.

SBIR funds small businesses conducting research and development directly. Your company proposes the idea, performs the work, and owns the resulting technology. STTR serves a parallel purpose but requires a formal partnership with a nonprofit research institution — typically a university or federal laboratory — so that foundational research can move from the lab into commercial products.

Both programs follow a three-phase structure:

Phase I — Feasibility and proof of concept. Awards range from $50,000 to $275,000 depending on the agency. The timeline is typically six to twelve months. Your goal is to demonstrate that your idea works and merits further investment.
Phase II — Full research and development. Awards range from $750,000 to $1.75 million, with performance periods of two years. You build a working prototype, collect performance data, and refine your commercialization strategy.
Phase III — Commercialization. There is no separate Phase III competition and no dedicated Phase III funding pool. Instead, Phase III involves follow-on contracts, procurement agreements, or private investment to bring the technology to market. The government retains certain data rights to SBIR-developed technologies, which can actually open doors to procurement contracts rather than close them.

The critical point for first-time applicants: SBIR and STTR are not grants in the traditional nonprofit sense. They are competitive contracts awarded to companies that can demonstrate both technical innovation and a realistic path to commercialization. If you have an idea but no plan to turn it into a product or service, these programs are not the right fit.

For a deeper look at how the SBIR landscape has evolved, browse current SBIR opportunities on Granted.

Who Qualifies: The Eligibility Decision Tree

Before you spend weeks writing a proposal, verify that your organization meets every eligibility requirement. Failing even one disqualifies your application.

Company requirements — all must be true:

Organized as a for-profit business (LLCs, C-corps, S-corps all qualify; nonprofits, sole proprietorships without formal incorporation, and foreign entities do not)
Based in the United States (incorporated domestically with operations in the U.S.)
Fewer than 500 employees, including all affiliates (parent companies, subsidiaries, and entities under common ownership count toward this cap)
At least 51% owned and controlled by U.S. citizens or permanent resident aliens (or by another qualifying small business, venture capital firm, or hedge fund under certain agency rules)

Principal Investigator (PI) requirements:

The PI must be primarily employed by the small business at the time of award. "Primarily employed" means more than 50% of their professional effort. A university professor who moonlights as a startup advisor does not qualify as PI.
The PI does not need to own the company, hold a PhD, or have prior SBIR experience — but they must be the person leading the technical work.

Work percentage requirements:

SBIR Phase I: The small business must perform at least two-thirds (66.67%) of the research, measured by total cost. Subcontracts to universities or consultants cannot exceed one-third.
SBIR Phase II: The small business must perform at least half (50%) of the research.
STTR Phase I and Phase II: The small business must perform at least 40% of the work, and the partnered research institution must perform at least 30%. The remaining 30% can be allocated to either party or to subcontractors.

Who does NOT qualify:

Nonprofits (including 501(c)(3) organizations)
Foreign-owned companies (even with U.S. subsidiaries, unless the U.S. entity meets all ownership requirements independently)
Companies with more than 500 employees
Companies where the PI is not primarily employed by the firm
Pre-revenue companies with no technical team (you need demonstrated capability, not just an idea)

SBIR vs. STTR: Which Program Should You Choose?

These two programs share the same funding phases, similar award amounts, and identical goals — but they differ in who does the work and how partnerships are structured. Choosing the wrong program wastes your time on an application that does not fit your situation.

Choose SBIR if:

Your company has the in-house technical expertise to perform the research
You want maximum control over the project direction and intellectual property
You can meet the two-thirds work requirement without substantial university involvement
You prefer to use consultants or subcontractors selectively rather than designating a formal research partner

Choose STTR if:

Your technology originates from university or federal lab research and needs that institution's facilities, expertise, or IP licenses to develop
Your company cannot perform 66.67% of the work in-house (STTR's 40% threshold is more achievable for early-stage startups)
You want to formalize a relationship with a research institution through a Cooperative R&D Agreement
The PI could be employed by either the company or the research institution (STTR allows this; SBIR does not)

Key structural differences:

	SBIR	STTR
Small business minimum work (Phase I)	66.67%	40%
Research institution minimum work	None required	30%
PI employment	Must be primarily employed by the company	Can be employed by either the company or the research institution
Formal partnership agreement	Not required	Cooperative R&D Agreement required
Number of participating agencies	11	5 (DoD, NIH, NSF, DOE, NASA)
Annual funding	~$3.2 billion	~$800 million

A practical note: many companies start with SBIR because it is simpler. If you later discover you need deeper university involvement, you can apply to STTR for a future project without any penalty. The programs are not mutually exclusive — a single company can hold both SBIR and STTR awards simultaneously.

The 11 Agencies: Where Your Technology Fits

Each participating agency funds SBIR proposals aligned with its own mission. Submitting a biomedical device proposal to the Department of Transportation wastes everyone's time. The table below shows each agency's SBIR profile as of fiscal year 2026.

Agency	Annual SBIR Budget (approx.)	Typical Phase I Award	Focus Areas
Department of Defense (DoD)	$2.0 billion	$50,000–$250,000	Weapons systems, cybersecurity, autonomous vehicles, advanced materials, communications, space, directed energy
National Institutes of Health (NIH)	$1.2 billion	$275,000	Biomedical devices, therapeutics, diagnostics, digital health, health IT
National Science Foundation (NSF)	$270 million	$275,000	Deep tech across all science and engineering fields — AI/ML, quantum, advanced manufacturing, climate tech
Department of Energy (DOE)	$350 million	$200,000–$250,000	Clean energy, nuclear, grid modernization, energy storage, fusion, carbon capture
NASA	$200 million	$150,000	Aerospace, earth observation, propulsion, life support, in-space manufacturing
U.S. Department of Agriculture (USDA)	$35 million	$100,000	Precision agriculture, food safety, rural broadband, forestry, animal health
Environmental Protection Agency (EPA)	$8 million	$100,000	Environmental monitoring, remediation technologies, water treatment, air quality
National Oceanic and Atmospheric Administration (NOAA)	$18 million	$150,000	Ocean observing, weather forecasting, fisheries technology, climate modeling
Department of Homeland Security (DHS)	$30 million	$150,000	Border security, disaster response, chemical/biological detection, cybersecurity
Department of Transportation (DOT)	$12 million	$150,000	Vehicle safety, infrastructure monitoring, traffic management, aviation
Department of Education (ED)	$12 million	$250,000	EdTech, learning analytics, accessibility tools, special education technology

How to pick your agency: Start with the mission fit, not the money. A $275,000 NIH Phase I is meaningless if your technology solves a DoD problem. Read three to five recent solicitations from your target agency to understand the specific language, formatting expectations, and evaluation priorities before committing. For DoD-specific guidance, see our DoD SBIR guide.

Registration Checklist: What You Need Before You Apply

Registration is the single most common reason first-time applicants miss a deadline. Some registrations take weeks to process, and you cannot submit a proposal until every registration is complete and active. Start this process at least six weeks before the solicitation closes.

Required for all SBIR/STTR applications:

Unique Entity Identifier (UEI) — Replaces the old DUNS number. Obtained through SAM.gov. Processing time: 1–2 business days if your entity information is clean, up to 10 business days if SAM requests documentation.
SAM.gov registration — System for Award Management. Required for any federal contract or grant. Initial registration takes 3–4 weeks (sometimes longer). Must be renewed annually. Your SAM registration must be active at the time of award, not just at the time of submission.
SBIR.gov company registration — Create a company profile at SBIR.gov. This is where you manage your submissions and track award status. Registration is fast (same day) but requires your UEI.
SBA company registry — Register with the Small Business Administration to certify your small business status. This is where foreign ownership and affiliation information is verified.
NAICS codes — Identify the North American Industry Classification System codes that describe your business. You will need these for SAM.gov and for your proposals. Choose codes that accurately reflect your company's primary activities.

Agency-specific portals (required before submission to that agency):

NIH: eRA Commons account for the PI and the Signing Official (SO). The SO must have institutional affiliation completed. Allow 2–3 weeks.
NSF: Research.gov account. Faster than eRA Commons — typically 1–2 business days.
DoD: Defense SBIR/STTR Innovation Portal (DSIP) at dodsbirsttr.mil. Registration is quick, but you must create separate accounts for each solicitation period.
DOE: PAMS (Portfolio Analysis and Management System) account through DOE's Office of Science.
NASA: SBIR.nasa.gov proposal submission portal — separate from the main SBIR.gov system.

Checklist before you start writing:

Reading a Solicitation: What Matters Most

A solicitation document can run 200+ pages. Most of those pages are boilerplate terms and conditions you will read once and then reference as needed. The sections that determine whether you win or lose are much shorter.

Find these five things first:

Topic descriptions — Each solicitation contains specific topics (DoD may list 300+ per cycle). Read the full topic description, not just the title. The description tells you exactly what the agency wants, what Phase I should accomplish, and what a successful outcome looks like. If your technology does not directly address the stated need, do not force the fit.
Evaluation criteria and weights — Every solicitation lists how proposals will be scored. NIH uses five criteria (significance, investigator, innovation, approach, environment) with roughly equal weight. DoD prioritizes technical merit above all else. NSF weights commercialization more heavily than most. Write your proposal to match these weights — if commercialization is 30% of the score, your commercialization section should be 30% of your effort.
Page limits and formatting requirements — Exceeding the page limit gets your proposal rejected without review. Typical limits: 15–25 pages for the technical volume. Font, margin, and spacing requirements vary by agency. NIH requires Arial 11pt. DoD requires specific header formats. Follow these rules exactly.
Q&A period — DoD and some other agencies designate a window during which you can ask the topic author questions. This is not optional. Contacting the program manager or topic author before writing your proposal is one of the strongest predictors of success. Ask clarifying questions about the topic scope, express your approach briefly, and gauge their interest.
Submission deadlines and portal instructions — Note the exact deadline including time zone. Most agencies use 5:00 PM Eastern. Portal submissions can encounter technical issues, so submit at least 48 hours early. Plan for at least one failed upload attempt.

Anatomy of a Winning SBIR Proposal

The specific format varies by agency, but every competitive SBIR proposal covers six core areas. Reviewers spend an average of two to four hours on each proposal, so clarity and specificity matter more than length. Our SBIR Phase I guide covers the Phase I proposal in greater detail; the breakdown below applies to both Phase I and Phase II.

Specific Aims and Technical Abstract

This is the first page reviewers read and often the only page they remember when scoring. State the problem, your proposed solution, and what Phase I (or Phase II) will accomplish in concrete terms. Avoid jargon that obscures your actual innovation. A reviewer should be able to explain your project to a colleague after reading this single page.

Strong specific aims include measurable objectives: "Demonstrate 10x improvement in detection sensitivity over current commercial sensors" is reviewable. "Develop an innovative new sensing platform" is not.

Technical Approach

This is the core of your proposal and where most awards are won or lost. Cover these elements:

Innovation claim — What is new about your approach? State explicitly how it differs from existing solutions, published research, and competing products. Reviewers are scientists and engineers; they know the field. Vague claims of novelty are worse than no claims at all.
Methodology — Describe your research plan in enough detail that a qualified peer could evaluate its feasibility. Include experimental designs, analytical methods, computational approaches, or engineering specifications as appropriate.
Milestones and deliverables — Break the project into discrete tasks with measurable outcomes. Reviewers want to see that you have a realistic plan for completing the work within the proposed timeline and budget. Three to five milestones for Phase I, six to ten for Phase II.
Risk mitigation — Identify the two or three biggest technical risks and describe your contingency plans. Every project has risks. Acknowledging them demonstrates maturity; ignoring them suggests naivety.
Preliminary data — Not always required for Phase I, but any evidence that your approach works dramatically strengthens your proposal. Simulation results, bench-top experiments, pilot studies, or published papers from your team all count.

Commercialization Plan

Every SBIR agency evaluates commercial potential, but the weight varies. NSF and NIH treat commercialization as a primary criterion. DoD evaluates it alongside technical merit. Regardless of weight, a weak commercialization plan signals that the technology will sit on a shelf after the funding ends.

Your commercialization plan should address:

Market size and segmentation — Total addressable market, serviceable market, and your initial target segment. Use credible third-party data, not assumptions.
Competitive landscape — Who else is solving this problem? What do they charge? Why will customers choose your solution? Claiming "no competition" is almost always wrong and always a red flag.
Revenue model — How will you make money? Product sales, licensing, SaaS, service contracts? Be specific about pricing and unit economics.
Go-to-market strategy — Your first three customers (by name or category), distribution channels, and timeline from Phase II completion to first revenue.
IP strategy — Patents filed or planned, trade secrets, and freedom-to-operate analysis.

For detailed examples, see our blog post on SBIR commercialization plan examples.

Team Qualifications

Reviewers fund people as much as ideas. For each key team member, provide:

Relevant technical expertise and publications
Prior SBIR/STTR awards and outcomes (especially successful Phase II transitions and Phase III commercialization)
Industry experience relevant to the commercialization plan
Specific role and percent effort on this project

If your team has gaps, address them directly. A startup with three engineers and no business development lead should explain their plan for adding commercial expertise before Phase II. Pretending the gap does not exist invites reviewer skepticism.

Budget and Justification

Every dollar must connect to a specific task in your work plan. Reviewers flag budgets that include unexplained costs, inflated labor rates, or equipment purchases that do not clearly support the proposed research.

Standard budget categories:

Direct labor — Name, role, hourly rate, hours per task. The PI should commit meaningful effort (typically 25–50% for Phase I).
Fringe benefits — Apply your established rate. If you are a new company without a negotiated rate, use your actual benefit costs.
Equipment — Items over $5,000 with a useful life exceeding one year. Justify why purchase is better than rental or use of existing equipment.
Materials and supplies — Group by category with estimated costs. Reagents, components, test samples, software licenses.
Travel — Conference attendance, partner site visits, meetings with program managers. Itemize by trip.
Subcontracts — University partners, consultants, testing laboratories. Remember work percentage limits.
Indirect costs — Apply your negotiated indirect cost rate. New companies without a negotiated rate can use a de minimis rate of 10% of modified total direct costs (per 2 CFR 200).

For a detailed walkthrough of budget construction, see our budget justification guide and the line-by-line SBIR budget template.

Supplementary Documents

These do not count against your page limit and can significantly strengthen your proposal:

Letters of support — From potential customers, end-users, strategic partners, or subject-matter experts. A letter from a DoD program manager expressing interest in your technology is worth more than an extra page of technical description. See our guide on writing effective letters of support.
Facilities and equipment description — Demonstrate that you have (or have access to) the infrastructure needed to perform the work.
Data management plan — Required by NSF and increasingly by other agencies.
Biosketches — Standardized CVs in the agency-required format.
Prior SBIR/STTR award summary — If you have previous awards, summarize their outcomes and commercialization status.

How SBIR Proposals Are Reviewed

Understanding the review process helps you write a proposal that reviewers can score easily. Agencies that use different processes produce different types of winners.

NIH — Peer review through study sections, identical to the R01 process. Each proposal receives at least three expert reviews. Scored on a 1–9 scale across five criteria: significance, investigator(s), innovation, approach, and environment. Scores are multiplied and averaged for an overall impact score (10–90, lower is better). Paylines vary by institute but typically fall between the 15th and 25th percentile.

NSF — Two-stage review. First, a technical panel of three to five experts evaluates the technical merit and broader impacts. Then, a separate commercialization review assesses market potential, team capability, and business plan. Both stages must pass for an award. NSF's Project Pitch system lets you submit a two-page concept for preliminary feedback before writing a full proposal — use it.

DoD — Technical evaluation panels organized by topic area. Proposals are scored on technical merit (most weight), personnel qualifications, and commercialization/transition potential. DoD reviewers are often military personnel and defense engineers with direct operational experience. They value practical solutions to stated problems over theoretical elegance. For the full DoD review breakdown, see the DoD SBIR guide.

DOE — Merit review panels scoring on technical approach, team qualifications, and commercial impact. DOE places strong emphasis on energy and environmental relevance.

What reviewers actually look for across all agencies:

Specificity over generality. "We will test three formulations at five concentrations using ASTM D4060 abrasion testing" beats "We will conduct rigorous testing."
A clear connection between the problem, the proposed solution, and the tasks in the work plan.
Evidence that the team can execute — prior work, preliminary data, relevant publications, or industry experience.
A realistic commercialization path with identified customers, not hypothetical market projections.
A budget that matches the scope of work without padding.

For additional proposal writing strategies, see tips for writing a successful SBIR proposal.

From Phase I to Phase II: Planning the Transition

A Phase I award is not the end goal — it is the foundation for a Phase II proposal and, ultimately, a commercial product. The strongest Phase II proposals come from teams that planned the transition from day one of Phase I.

What a successful Phase I final report looks like:

Clear demonstration that the proposed approach is feasible (not just promising — feasible, with data)
Quantitative results against the milestones stated in the original proposal
Honest assessment of what worked, what did not, and what you learned
Preliminary Phase II research plan based on Phase I findings
Updated commercialization plan reflecting customer discovery conducted during Phase I

When to start writing Phase II:

Most agencies allow Phase II submissions three to six months after Phase I completion. Start writing the Phase II proposal during the final quarter of Phase I, while your results are fresh and your team is still engaged. Some agencies (particularly DoD) issue Phase II invitations to successful Phase I awardees rather than running an open competition — know which model your agency uses.

How to strengthen your Phase II proposal with Phase I results:

Reference specific Phase I data in every section of the Phase II technical approach
Show how Phase I results shaped your Phase II milestones (not just "we will continue the work")
Include customer feedback gathered during Phase I in your commercialization plan
Demonstrate that you have already begun addressing the risks identified in Phase I

Timeline expectations by agency:

Agency	Phase I Duration	Gap Between Phases	Phase II Duration
DoD	6–12 months	3–6 months (invitation-based)	24 months
NIH	6–12 months	6–12 months (competitive)	24 months
NSF	6–12 months	6–9 months (competitive)	24 months
DOE	12 months	6–12 months	24 months
NASA	6–13 months	Varies by center	24 months

Post-Reauthorization Changes That Affect Your Application

The SBIR/STTR programs were reauthorized in late 2025 after a significant lapse that caused months of uncertainty for small businesses across the country. The reauthorization brought several changes that directly affect how you prepare and submit proposals in 2026.

Key changes to be aware of:

Award ceiling increases — Phase I and Phase II maximum award amounts were adjusted upward for several agencies to reflect inflation since the previous authorization. Check the specific solicitation for current maximums rather than relying on historical figures.
Foreign risk screening — New provisions require additional disclosure of foreign affiliations, funding sources, and partnerships. Proposals involving team members with foreign government connections may face additional scrutiny. Prepare to document all foreign ties in your proposal.
Strategic Breakthrough Awards — A new pathway within SBIR that allows select agencies to make larger, milestone-based awards for technologies deemed critical to national competitiveness. Not all agencies participate, and the specific implementation varies.
Venture capital and hedge fund rules — Ownership rules for VC-backed companies were clarified. Companies majority-owned by venture capital or hedge funds may participate under specific conditions that vary by agency.

For a complete analysis of the reauthorization and what it means for applicants, see our SBIR reauthorization guide.

Frequently Asked Questions

Can a nonprofit organization apply for SBIR or STTR? No. SBIR and STTR awards are exclusively for for-profit small businesses. A nonprofit can participate as the research institution partner in an STTR application, but the lead applicant and award recipient must be a for-profit entity.

Can I apply to multiple agencies at the same time? Yes, but you cannot submit the same proposal to multiple agencies. Each application must be tailored to the specific agency's solicitation topics and evaluation criteria. You can, however, submit different proposals to different agencies simultaneously. You must disclose any overlapping or related applications.

How long does the review process take? It varies significantly. DoD typically announces decisions within four to six months of the submission deadline. NIH follows its standard three-cycle-per-year review calendar, with decisions roughly five to six months after submission. NSF decisions take four to six months. Budget the waiting period for advancing your technology and building customer relationships.

What if my proposal is rejected — can I resubmit? Yes. Most agencies allow resubmission to the next solicitation cycle. If you receive reviewer feedback (NIH provides summary statements; NSF and DoD provide brief evaluations), use it to strengthen your resubmission. Proposals that directly address reviewer concerns have significantly higher success rates the second time.

Do I need a patent before applying? No. You do not need an issued patent or even a filed application. However, you should have an IP strategy and be prepared to describe it in your commercialization plan. If your technology is based on patented university research, you will need a license or option agreement, especially for STTR applications.

What is the success rate for SBIR Phase I proposals? It varies by agency and topic. NIH funds approximately 20–25% of SBIR Phase I applications. NSF funds about 15–20%. DoD rates vary widely by topic — some topics receive only two or three proposals, while others attract 20+. The overall average across all agencies is roughly 15–25% for Phase I.

Can I hire consultants or subcontractors? Yes, within the work percentage limits. For SBIR Phase I, the small business must perform at least two-thirds of the work. Consultants and subcontractors count toward the remaining one-third. For STTR, the allocation is more flexible (40% small business, 30% research institution, 30% either/subcontractors).

Do I need matching funds or cost sharing? No. SBIR and STTR do not require cost sharing or matching funds. The federal award covers the full project cost, including indirect costs at your negotiated or de minimis rate. Some state programs offer supplemental SBIR matching grants — check your state's economic development agency.

Can a company with no revenue or no employees apply? A company with no revenue can apply — many SBIR awardees are pre-revenue startups. However, you must have at least one employee (the PI) who is primarily employed by the company at the time of award. A company with zero employees and no plan to hire before the award date does not qualify.

What happens to my intellectual property? You retain ownership of inventions and intellectual property developed under SBIR/STTR awards. The government receives a royalty-free license to use the technology for governmental purposes, but this does not prevent you from commercializing it. SBIR data rights provide a protection period (typically five years) during which the government cannot disclose your technical data to competitors.

Next Steps

The SBIR application process rewards preparation. Companies that invest time in understanding their target agency, building relationships with program managers, and writing proposals that directly address solicitation requirements consistently outperform those that treat it as a form-filling exercise.

Start with one agency and one solicitation. Read it cover to cover. Contact the program manager. Build your registration infrastructure now so it is ready when the next solicitation opens. Write your proposal with the evaluation criteria printed and pinned to your wall.

For hands-on guidance tailored to your specific technology and target agency, explore Granted's SBIR tools — from opportunity discovery to proposal development, Granted helps small businesses move from an idea to a funded Phase I faster and with fewer missteps.