The Iowa Department of Revenue is issuing updated income tax withholding formulas and tables for 2023. The Department updates withholding formulas and tables each year to account for inflation and for changes in individual income tax liability resulting from changes in Iowa law.
Employers can find the new Iowa 2023 withholding formulas and tables online.
The Department has updated the online Withholding Estimator to help individuals calculate their 2023 withholding amounts. As a reminder, employers will update withholding amounts starting January 1, 2023 but employees can also make changes to their Iowa W-4 (withholding) form by contacting their employer.
Employers with questions can contact the Department at 515-281-3114 or 800-367-3388.