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Startup

Essential accounting and finance guidance for startup founders

The R&D Tax Credit in 2026: How OBBBA Restored Section 174 Expensing, the Section 41 Four-Part Test, and the $500,000 Payroll Tax Offset for Qualified Small Businesses

OBBBA restored immediate Section 174 domestic R&E expensing in 2026 and gives small businesses until July 6, 2026 to amend 2022–2024 returns. A practical guide to the Section 41 four-part test, the 14% Alternative Simplified Credit, the Section 280C reduced-credit election, and the $500,000 payroll tax offset for qualified small businesses.