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Replaces the individual income tax-rate tables and changes how tax brackets are indexed for inflation, including a one-year base-year shift and new rounding rules that round non-$25 increments down. It also repeals certain subsections of section 1 of the Internal Revenue Code, adjusts a withholding reference, and prevents a procedural rule for rate changes from applying to the amended provisions. The changes apply to taxable years beginning after December 31, 2025.
The bill standardizes withholding references and tightens inflation-adjustment rules to make tax tables more predictable and potentially lower taxes for some, but it also risks higher liabilities for others, raises employer compliance costs, and reduces procedural protections for rate changes.
Taxpayers (and the Treasury) will have clearer, more predictable inflation-adjustment and rounding rules for tax brackets, making future bracket updates and withholding calculations easier to anticipate.
Some taxpayers, particularly middle-class families, may see lower tax liability under the updated 2026 tax rate tables and brackets.
Employers required to withhold under section 3402 (and payroll providers) get a clearer statutory standard—changing the withholding reference from 'third lowest' to 'fourth lowest'—to implement updated withholding tables.
Taxpayers (including many middle-class families) may face higher tax liability if the new rate tables or rounding reduce bracket widths or push incomes into higher rates.
Employers, small-business owners, and payroll/financial institutions must update withholding systems and procedures before 2026, creating compliance costs and administrative burden.
Taxpayers and tax administrators (IRS/Secretary of the Treasury) lose certain procedural protections tied to section 15, which could reduce notice/transition safeguards and complicate planning around rate changes.
Introduced July 2, 2025 by Brian K. Fitzpatrick · Last progress July 2, 2025