immediate deduction reinstated for 2025 domestic R&E

A major tax change is here for businesses with research and experimental (R&E) expenses. On July 4, 2025, the One Big Beautiful Bill Act (OBBBA) reinstated the immediate deduction for U.S.-based R&E expenses, reversing rules under the Tax Cuts and Jobs Act (TCJA) that required businesses to capitalize and amortize these costs over five years (15 years