Research and Development Tax Credit Expansion Act of 2025

HR 4933, the Research and Development Tax Credit Expansion Act of 2025, expands tax benefits for small businesses conducting research. It increases the refundable R&D credit rate to 20% (from 14%) for qualified small businesses, adjusts credit amounts for inflation annually, and allows the credit to be refunded against unemployment taxes instead of just income taxes. The bill broadens eligibility by raising the gross receipts threshold from $5 million to $10 million for "qualified small businesses" and modifies rules for calculating credits in early years of research activity. These changes apply to taxable years beginning after December 31, 2025, directly affecting qualifying small businesses with under $25 million in annual revenue.