National Science Foundation logo
NSF SBIR/STTR (America's Seed Fund)

NSF SBIR Phase II

Funds United States deep-tech startups extending proven early projects into substantial technology development.

Between cyclesNational Science FoundationUnited States

NSF SBIR Phase II is the National Science Foundation's development-stage funding mechanism for small businesses that have successfully completed an NSF SBIR Phase I award. Operating under solicitation NSF24-580, it provides up to $1,250,000 over 24 months to fund prototype refinement, scale-up R&D, manufacturing process development, or pilot validation for a deep-technology project already validat…

Continuation of a successful NSF SBIR Phase I project. Same deep-tech topic codes as Phase I.

CycleiHow often this grant runs — e.g. annually, on a rolling basis, or a one-off call.Multiple per year
Next deadlineiThe next date applications are due. Rolling means you can apply any time.4 Dec 2026
Decision timeiTypical time from the deadline to the funder's decision.28 weeks
Project durationiHow long the funded work is expected to run.24 months
Award typeiThe form of funding — grant, equity, loan, tax credit, etc.Grant
Match fundingiThe share of project costs you must cover yourself. 0% = fully funded.0%
Funding pooliThe total budget available across all awards in this round.$90M

Sign up free to see the funding breakdown

Sign up free to see the industries in scope

Sign up free to see the full eligibility

Sign up free to see how to apply

Sign up free to see what you submit

Sign up free to see how they score you

Sign up free to see the timeline

Sign up free to see where teams trip up

Last verified: 22 Jul 2026Source: new.nsf.gov