24 June 2026 2026 state supplemental, flat tax and highest income tax withholding rates with hyperlinks to the latest withholding tables/instructions (updated June 24, 2026) To assist you in reviewing your state and US territory income tax withholding rates for 2026, the chart provided in the attached PDF (updated as of June 24, 2026) contains hyperlinks to the most recent income tax withholding formulas/tables published by the states and US territories, information concerning their respective highest income tax withholding rates (based on their percentage method of withholding) or flat tax withholding rates, and, if applicable, their supplemental withholding rates. Updates will be made to publication throughout the year. You can find this and other of our special reports here.
Document ID: 2026-1359 | ||||||