**The 89% trader consensus against a corporate tax cut before 2027 stems primarily from the July 2025 passage of the One Big Beautiful Bill Act (OBBBA), which extended and made permanent numerous 2017 TCJA business provisions—including full bonus depreciation and R&D expensing—but left the headline corporate rate unchanged at 21%.** Trump had campaigned on lowering the rate to 15% for domestic manufacturers, yet this provision was dropped during reconciliation negotiations amid concerns over deficit impact and competing priorities like individual deductions and border funding. With the major tax overhaul now complete and the 2026 midterms approaching, prospects for additional rate-reduction legislation have narrowed sharply; Republicans face limited appetite for further deficit-expanding measures ahead of elections, while Democrats remain opposed. Recent analyses note the OBBBA delivered substantial corporate relief through accelerated deductions and international tweaks without altering the statutory rate, reducing urgency for follow-on cuts. Any new bill would require unified GOP support in a narrow window before November 2026, making enactment before 2027 improbable under current conditions.