Policy impact modeling
2026-04-26
11 minute read
16 sources
The TCJA Cliff and OBBBA: US Fiscal Trajectory Through 2026
Most individual provisions of the 2017 Tax Cuts and Jobs Act sunset on December 31, 2025. The One Big Beautiful Bill Act, signed July 4, 2025, made the bulk of those provisions permanent at a CBO-scored cost of roughly 4.5 trillion dollars over ten years. The fiscal trajectory through 2026 is now defined by debt-to-GDP, term premium, distributional incidence, and state-level conformity friction.
The Tax Cuts and Jobs Act of 2017, Public Law 115-97, scheduled most of its individual income tax provisions to sunset on December 31, 2025. The corporate side, including the 21 percent flat corporate rate, GILTI, FDII, and BEAT, was made permanent in 2017. The One Big Beautiful Bill Act, Public Law 119-21, signed by President Trump on Ju...