Sponsors (2)
The bill updates tax rates and indexing rules that could simplify or lower taxes for some while clarifying administration, but it also risks higher tax bills for others, reduced inflation protection over time, and imposes implementation costs on tax administrators and employers.
Taxpayers: Tax brackets and rates are updated effective 2026, which could reduce or simplify tax liability for some filers.
IRS/treasury and tax administrators: The bill clarifies inflation-adjustment methodology by updating the base year and rounding rules, making statutory indexing and adjustment procedures more explicit and easier for administrators to apply.
Employers and payroll providers: Adjusting a cross-reference in the withholding statute should help align employer withholding tables with the new tax-rate structure, easing payroll calculations once changes are implemented.
Many taxpayers: Changes to rates and bracket thresholds could increase tax bills for some filers depending on their incomes and how the new structure applies.
Taxpayers: Narrower rounding (to $25) and the change in base year for indexing may weaken inflation protection and accelerate bracket creep over time, gradually reducing after-tax income for some households.
IRS, employers, and tax software/payroll vendors: The required updates to withholding tables, tax software, and payroll systems before 2026 will impose administrative costs and implementation burdens, with outsized effects on small businesses and vendors.
Based on analysis of 2 sections of legislative text.
Replaces individual income tax rate tables, revises inflation-indexing and rounding rules, removes two §1 subsections, and amends a withholding-table cross-reference, effective for tax years after 2025.
Official title: To amend the Internal Revenue Code of 1986 to make permanent certain expiring income tax rates and to establish a new top income tax rate.
Introduced July 2, 2025 by Brian K. Fitzpatrick · Last progress July 2, 2025
Replaces the federal individual income tax rate tables for all filing statuses, changes how brackets are indexed for inflation (including base-year and rounding rules), removes two existing subsections of the current tax statute, and tweaks a withholding cross-reference. The tax changes apply to taxable years beginning after December 31, 2025 and include an instruction that automatic effective-date rules do not apply to some of the rate adjustments. The measure alters both taxpayers' statutory tax-rate schedules and the Treasury/IRS mechanics for inflation adjustments and withholding-table references. It primarily affects individual taxpayers, payroll withholding, and IRS table-prescribing procedures starting in 2026 tax years.