SBIR (Small Business Innovation Research)
A federal program that funds small businesses to conduct R&D with commercialization potential through Phase I feasibility awards and Phase II full development contracts.
The Small Business Innovation Research (SBIR) program is one of the largest sources of early-stage government funding for small businesses in the United States. Eleven federal agencies with large extramural R&D budgets must set aside a portion of those budgets for SBIR awards, creating a competitive path for innovative companies to win federal contracts.
Program Structure
SBIR awards follow a three-phase model. Phase I is a proof-of-concept contract typically worth $50,000 to $300,000 for six to twelve months. Phase II goes to the strongest Phase I performers and typically provides $750,000 to $2 million for up to 24 months of full R&D. Phase III involves commercialization using non-SBIR funding, though agencies can award follow-on contracts based on the Phase I and II work without competition.
Major Participating Agencies
The Department of Defense is the largest SBIR funder, with individual programs at Army, Navy, Air Force, DARPA, and defense agencies. NIH, NSF, NASA, DOE, EPA, and USDA are also major participants. Each agency publishes its own solicitation topics, deadlines, and review criteria on SBIR.gov.
SBIR vs. STTR
The Small Business Technology Transfer (STTR) program is closely related to SBIR and follows the same phase structure. The key difference is that STTR requires a formal research partnership with a university or federal laboratory, with the small business performing at least 40% of the work and the research institution performing at least 30%.
Proposal Strategy
SBIR proposals are evaluated on scientific and technical merit, the qualifications of the principal investigator, innovation relative to the state of the art, commercial potential, and feasibility. A direct and well-structured technical approach that addresses the specific topic is essential. ProposalApp can help SBIR applicants organize technical content, draft compliant responses, and manage submissions across multiple agencies.
Frequently asked questions
Who is eligible for SBIR funding?
To be eligible, a company must be a for-profit U.S. small business with fewer than 500 employees, at least 51% owned by U.S. citizens or permanent residents, and the principal investigator must be primarily employed by the company at the time of award.
How competitive is the SBIR program?
Acceptance rates vary by agency and topic but typically range from 10% to 25% for Phase I. Having a strong principal investigator, a technical approach that directly addresses the solicitation topic, and a credible commercialization narrative improves your odds substantially.