The Small Business Innovation Research (SBIR) program, overseen by the National Science Foundation, offers contracts and grants to small businesses for research and development (R&D) projects with commercial potential. Businesses can apply for three phases of funding: Phase I involves feasibility studies; Phase II continues R&D initiatives; and Phase III focuses on commercialization. Eligible businesses must be based in the U.S., organized for profit, and meet specific ownership and size criteria. The application process varies by agency but generally involves browsing funding opportunities, registering with key websites, speaking with agency staff, submitting proposals, and providing additional information as needed. Approval allows businesses to access funds and expert assistance to bring innovative products to market, driving growth and competitiveness.