Learn how NSF SBIR grants work from the Project Pitch through Phase II, and what accounting systems, cost rules, and reviews companies need to plan for.
The NSF SBIR program funds early-stage science and technology companies through grants, so founders can develop high-risk research without giving up equity. This guide explains how the program works and what NSF expects from an awardee’s accounting, from the first Phase I grant through the financial review before Phase II.
What is the NSF SBIR Program?
The NSF SBIR program supports startups working on scientific and engineering innovations with strong commercial potential. It’s part of America’s Seed Fund, which funds high-risk research that is too early for most private investors. The funding is non-dilutive and helps founders prove technical feasibility, build prototypes, and bring new technology to market.
Program Overview
NSF awards hundreds of SBIR and STTR grants each year across nearly every area of science and engineering, from advanced materials to artificial intelligence. It selects projects based on their scientific and commercial potential.
The program is open to U.S. for-profit small businesses with 500 or fewer employees, including affiliates. Projects must show both technical merit and a market opportunity, and STTR projects also require a partnership with a research institution.
Phase I and Phase II Funding
Phase I
NSF Phase I awards provide up to $305,000, with final amounts determined by the current solicitation. Funding supports feasibility work, early experiments, and proof-of-concept development over a performance period of 6 to 18 months.
Phase II
Phase II awards can be funded up to $1,250,000 for up to 24 months of research and development, prototype building, and commercialization planning. Exact limits follow the numbers published in each solicitation.
A successful Phase I project positions a company to apply for Phase II. Before making a Phase II award, NSF also reviews whether the company can manage a larger grant, including its accounting system, records, and financial stability.
How NSF SBIR Differs from Other SBIR Programs
NSF funds SBIR through grants. For for-profit companies, NSF applies the cost principles in FAR Part 31 to decide which costs are allowable, along with the administrative requirements in 2 CFR 200, Subparts A through D. Those rules shape how your company tracks costs, sets indirect rates, records labor, and supports every charge to the grant.
Eligibility: Who Can Apply?
To qualify for the NSF SBIR program, your company must meet federal small business standards and show that its team can carry out the proposed research.
SBIR Eligibility Requirements
At the time of award, your company must:
- Be a for-profit business located and operating in the United States
- Have 500 or fewer employees, including affiliates
- Be more than 50% owned and controlled by U.S. citizens or permanent residents.
- Perform the work in the United States, except in rare cases where specialized capabilities aren’t available domestically
The research must be innovative, rooted in science or engineering, and positioned for eventual commercial use. NSF funds early, high-risk work, and the project still needs a realistic path to a product or service.
Principal Investigator Requirements
Every NSF SBIR proposal names a Principal Investigator (PI) who leads the research. NSF evaluates the PI’s technical background along with the company’s overall capacity to do the work.
The PI must:
- Be primarily employed by the small business, meaning more than 50% of their time, at the time of award and throughout the project
- Have the technical expertise to lead the research
- Commit a meaningful share of their time to the project and record that effort in the company’s timekeeping system
How the company pays its people matters here too. One STTR client organized as an LLC paid its owners through guaranteed payments and asked how that fit the program. Team 80 walked through the difference between W-2 payroll and 1099 payments, so the company could pay the people working on the project in a way it could document.
STTR Eligibility Notes
For the related STTR program:
- The small business must partner with a nonprofit research institution, such as a university or federal lab.
- The small business must perform at least 40% of the research, and the research institution at least 30%.
How to Apply for NSF SBIR Funding
NSF uses a two-step application process that lets founders test an idea with NSF before writing a full proposal. Each step looks at the technical merit of the research, the team’s qualifications, and the potential for commercial impact.
Step 1: Project Pitch
The Project Pitch is the first submission and the only way to receive an invitation to apply. It is a short, structured description of your innovation that covers four elements:
- The technical innovation
- The technical objectives and R&D plan
- The market opportunity
- The company and team qualifications
NSF reviews the pitch to decide whether the work fits the program. NSF updates the Project Pitch portal and its required fields from time to time, so check the current guidance before submitting.
NSF Submission Limits
NSF limits how many Project Pitches and full proposals a small business can submit.
Your company may submit:
- Up to two Project Pitches in any 12-month period
- Up to three Project Pitches for the same project or technology
- Up to two full proposals in a fiscal year
A company can only have one Phase I or Fast-Track project under review at a time. If a pitch or proposal is still being reviewed, you’ll need to wait for NSF’s decision before submitting a new pitch.
Step 2: Full Proposal
Once invited, your company prepares a full SBIR proposal with a clear technical plan, evidence the team can carry it out, and a strong case for commercial potential.
Full proposals are due by NSF’s published deadlines, which generally fall in March, July, and November each year. Team 80 tracks upcoming dates on its SBIR deadlines page.
Technical Narrative
A detailed explanation of the innovation, the scientific or engineering problem it addresses, and the research tasks planned for Phase I. NSF looks for sound methods, goals the team can reach within the award period, and evidence of technical feasibility.
Budget and Justification
A line-item budget that explains how your company will use NSF funds, with support for labor, materials, equipment, subawards, travel, and indirect costs. For for-profit companies, every cost must be allowable under the cost principles in FAR Part 31.
Phase II budgets get a closer look. During its Phase II review, NSF limits salaries that the company’s commercial activity can’t sustain to Bureau of Labor Statistics averages for the role, and it doesn’t treat small business owners as “Chief Executives” for salary purposes. Consultant rates are capped at $125 an hour or $1,000 for an eight-hour day. Team 80 reviews proposal budgets before submission so the numbers hold up under those rules.
Team Qualifications
Short biographies for key personnel that show their technical expertise and capacity to complete the work. The PI’s background and involvement get the most attention.
Step 3: Review Process and Timeline
NSF program staff first review each proposal for fit with the program, and then outside experts review its technical merit. Reviewers evaluate proposals on intellectual merit, broader impacts, and commercial potential.
NSF aims to make funding decisions within about six months. After an award, your company needs accounting and timekeeping in place before it starts spending, and the work must follow the approved budget.
Managing Your NSF SBIR Award: Accounting Essentials
An NSF SBIR grant comes with financial requirements that start on the first day of the award. NSF expects documented costs, accurate timekeeping, and clear separation of grant spending from the rest of the business.
Required Accounting Systems
NSF expects every awardee to use an industry-standard accounting system that can track spending by award.
Your accounting system should be able to:
- Track costs by grant or project
- Separate direct costs from indirect costs
- Record labor by employee, hours, and activity
- Show an audit trail for every cost charged to the grant
- Produce a project cost ledger that ties to your payment requests
NSF doesn’t certify software. Many small businesses use QuickBooks or a similar system, set up with project tracking and clear written procedures.
Time Tracking Requirements
NSF’s Phase I terms require timesheets for every employee who charges salary or wages to the grant, and the records need to reflect time as it’s worked.
A timekeeping process that meets NSF expectations includes:
- Regular time entry by each employee, ideally daily
- Hours that reflect actual effort on the project
- Supervisor review and approval
- Timesheets kept on file for review
Time records need to match payroll, the approved budget, and the tasks described in the proposal. NSF asks for a sample timesheet during the Phase II review, so the process you use in Phase I becomes part of your Phase II application.
Allowable and Unallowable Costs
NSF uses the cost principles in FAR Part 31 to decide which costs a for-profit company can charge to an SBIR grant. Costs must be reasonable, necessary for the project, and allocable to the work in the proposal.
Direct costs typically include:
- Salaries and wages for project personnel
- Materials and supplies used in the research
- Specialized equipment or testing services
- Subawards or consultants performing technical work
Indirect costs cover shared business expenses such as fringe benefits, facilities, and general and administrative costs.
Unallowable costs can’t be charged to the grant or included in indirect cost pools. Common examples include alcohol, entertainment, most advertising, lobbying, and fines.
Understanding Indirect Rates for NSF SBIR Awards
NSF allows small businesses to charge indirect costs, and its Phase II review gives two simple options that need no supporting documentation:
- The NSF “Safe Rate”: Indirect costs plus fringe benefits at or below 50% of total proposed salaries and wages
- The de minimis rate: 15% of modified total direct costs
A company that wants a higher rate must submit a full indirect cost rate proposal based on actual costs from its most recent fiscal year, reconciled to its financial statements. NSF won’t fund patent costs, sales and marketing, business development, or manufacturing costs in indirect pools, and it reclassifies indirect salaries above 35% of total salaries and wages as direct costs.
Team 80 compares each client’s actual indirect rates with the rates in its budget every month, so a company knows early whether its proposed rate holds up.
Financial Reporting Requirements
NSF SBIR awards require project reports through Research.gov, including annual reports on multi-year awards, a final project report, and a Project Outcomes Report at the end of the award. Your ACM$ payment requests also need to match your accounting records.
How NSF SBIR Payments Work
NSF pays SBIR awards through ACM$. Your company requests funds as it needs them for project costs, and each request must be supported by timesheets, payroll records, and receipts in the accounting system. NSF also recommends reviewing the tax implications of the award with a tax or accounting professional before your first drawdown.
Preparing for Phase II: The CAP Review Process
When an NSF program official is considering recommending a Phase II proposal for funding, NSF’s Cost Analysis and Pre-Award (CAP) Branch reviews whether the company can manage a larger federal award. Most companies call this the CAP review. It moves quickly, and the records it checks come from Phase I.
What the CAP Review Covers
NSF uses CPA firms to review the documents each company submits. They look at how your accounting system tracks grant spending, how your company documents labor and indirect costs, whether your organization separates duties so no single person controls both the accounting and the project, and whether the company is financially stable enough to finish a two-year project.
Documentation NSF Requires
NSF’s request includes 18 items. The ones that take the most preparation are:
- NSF Forms 357, 358, and 359, covering your organization, your financial management systems, and your small business status
- Financial statements for the two most recent fiscal years, including a capitalization table, plus interim statements if the year-end statements are more than 180 days old
- Tax returns for the last two years, if your financial statements aren’t audited
- A project cost ledger showing actual Phase I expenses
- Your chart of accounts
- Written policies for compensation, effort reporting, and allowable costs
- A sample timesheet and current payroll registers
NSF also tests financial stability. A company with negative shareholders’ equity, weak liquidity, or significant loans coming due without a clear repayment source must provide more support, such as a two-year cash flow forecast or letters from investors.
Timeline and What to Expect
NSF asks for the documentation within 10 calendar days of its request. The review isn’t an audit, but it’s thorough, and NSF may follow up with questions before it finishes. Companies can spend up to $10,000 of their Phase I budget on CPA services to prepare, so it’s worth raising with your program director early.
How Team 80 Prepares Clients for the CAP Review
Much of the CAP documentation comes straight from Team 80’s monthly work. Clients already have monthly financial statements, a chart of accounts that separates direct, indirect, and unallowable costs, project cost reports, and written accounting policies and procedures tailored to the company. Segregation of duties is built in as well, because Team 80 processes bills and payments while the client approves each one.
Common CAP Review Challenges
Most CAP problems trace back to Phase I. A system that can’t separate grant spending from the rest of the business can’t produce a clean project cost ledger, and gaps in timesheets, payroll support, or receipts lead to follow-up requests that slow the review. Indirect rates cause trouble too. A rate above the Safe Rate needs a full rate proposal that reconciles to the financial statements, and without that reconciliation, NSF recommends the 50% Safe Rate instead.
The 10-day deadline catches many companies off guard. Gathering two years of financial statements, written policies, and supporting records in that window is difficult from scratch, and much easier when the books have been kept current all along.
Team 80's NSF SBIR Accounting Services
Team 80 manages the recurring accounting behind Phase I and Phase II NSF SBIR and STTR grants. Each client works with a dedicated Chief Accounting Officer who manages the monthly accounting, reviews the results with the company each month, and serves as the main point of contact.
What Team 80 Does for NSF SBIR Awardees
- Chart of accounts setup that separates direct, indirect, and unallowable costs
- Timekeeping and labor allocation
- Weekly processing of bank and credit card activity and vendor bills, with the client approving each payment
- Monthly financial statements and project cost reports by the 15th
Indirect rate tracking against the rates in your budget - Written accounting policies and procedures tailored to your company
- CAP review preparation for Phase II candidates
- Payroll through Gusto, when included in your service agreement
The accounting problems that cause trouble at Phase II usually start in Phase I: missing timesheets, labor charges that don’t match payroll, indirect rates without support, and ACM$ requests that don’t tie to the books. With more than 25 years of experience supporting SBIR and STTR awardees, Team 80 keeps those records current from the start of Phase I, so a company can answer NSF’s 10-day CAP request with documents it already has.
Sarah Sinicki
Team 80 CEO
Sarah is a leader focused on serving small businesses in various industries. She has worked with a multitude of companies over the last 25 years and loves helping business owners find success. Sarah is genuinely committed to unburdening Team 80 clients so that they have the freedom to focus on their business. In her free time, you can find her spending time with her husband, two kids, and her Yorkies, Marley and Ziggy. When she is not helping business owners, you can find her in a Reb3l Groove class dancing it out. Sarah is also an avid Colorado Avalanche fan, so if you ever want to talk about hockey, she’s your gal.
