The NSF SBIR/STTR Project Pitch: what it is and how to submit it

Before a startup can send NSF a full SBIR or STTR Phase I proposal, it has to pitch the project and be invited. The Project Pitch is short — four text sections — but it decides whether you get to submit at all. This guide covers the pitch as it works under the current solicitation, NSF 26-510.

What the Project Pitch is

For Phase I (and Fast-Track), NSF requires an official invitation before you submit a proposal; to get one, you submit a Project Pitch and receive a response from program staff by email.^[1] The same rule applies to the NSF 26-511 pilot.^[2] Phase II needs no pitch: it's open only to NSF Phase I awardees, 6 to 24 months after their Phase I starts.^[1]

NSF uses the pitch to judge fit. It funds research and development with real technical risk — “feasibility must be unproven at the start of the project” — and does not fund straightforward engineering or incremental product development.^[3] The project must fit one of NSF's SBIR/STTR topic areas.^[7]

The four sections and their limits

Those are NSF's current limits^[3] — note that the last two sections get half the space of the first two. The form also collects company and team information and a topic area from a drop-down list.^[9]

Where and how to submit it

• Pitches go through NSF's online pitch portal, which needs a user account; Research.gov is used later, for the full proposal.^[4]
• A pitch can only be edited while its status is “New” or “Incomplete”, and only within the same calendar day.^[4]

How many pitches you can submit

Under NSF 26-510 a company may have one pitch per submission window and one under review at a time — and, new in this solicitation, no more than two pitches per company in a 12-month period and no more than three for the same project.^[1][3] After an invitation, the company waits until that full proposal is resolved before pitching again.^[1]

Timing

• You can submit a pitch at any time; NSF says to expect a response in about one to two months.^[5]
• An invitation is valid for the next two submission deadlines after the date it's issued; after that, you start again with a new pitch.^[1]
• Full Phase I proposals are due by 5 p.m. submitter's local time on November 4, 2026; March 4, 2027; and July 7, 2027 — then annually on the first Wednesday in November, the first Thursday in March and the first Wednesday in July.^[1] See all SBIR/STTR deadlines.
• Unused invitations issued on or after July 3, 2025 must be used no later than November 4, 2026.^[1]
• A Fast-Track proposal is due within four months of its invitation.^[1]

What an invitation does — and doesn't — mean

An invitation lets you submit a full proposal; it isn't a funding decision. Full proposals are reviewed by at least three experts, decisions come about five to seven months after the deadline, and NSF reports that historical Phase I funding rates have been between 10% and 20%.^[6] If NSF doesn't invite you, it shares a brief explanation.^[3]

What the award is worth

Under NSF 26-510, Phase I proposals may request up to $305,000 for projects of 6 to 18 months; Phase II awards go up to $1,250,000 and typically run 24 months.^[1] For how the phases fit together, see SBIR and STTR phases explained.

After the invitation: the full proposal

In Research.gov, the Phase I proposal asks for your eight-digit Project Pitch case number and the invitation email as a PDF.^[8] From there the proposal is screened against NSF's formatting and content rules — the Project Description page limit, fonts, margins and required sections. They're all listed, with sources, on SolicitFit's NSF SBIR/STTR rules page.