**Major corporate tax legislation passed in mid-2025 has already addressed key business provisions without further rate reductions.** President Trump signed the One Big Beautiful Bill Act (OBBBA) on July 4, 2025, which made permanent many TCJA business incentives—including full expensing for R&D, bonus depreciation, and interest deductions—while leaving the 21% corporate rate unchanged. This package delivered substantial corporate relief retroactive into 2025 and beyond, but stopped short of additional headline rate cuts. In the current 2026 legislative environment, attention has shifted to implementation, tariff policy, and other priorities rather than new corporate tax legislation. With roughly six months remaining before 2027 and no active congressional push for further rate reductions evident in recent developments, trader consensus assigns only a slim 6.5% chance of a cut occurring in time. Historical patterns of tax reform timing and the scale of the 2025 overhaul reinforce the view that additional corporate rate action is unlikely before the deadline.