Under the One Big Beautiful Bill Act (OBBBA), signed by President Trump on July 4, 2025, amortization is repealed for domestic research and experimental (R&E) costs starting in 2025. The provision’s retroactive application provides eligible small business taxpayers who have capitalized R&E since 2022 opportunities to get a refund of previously paid taxes. All taxpayers may elect to accelerate unamortized domestic R&E entirely in 2025 or ratably over two taxable years beginning in 2025. R&E performed outside the U.S. continues to require capitalization and amortization over 15 years.

Download the PDF to learn more.