Updated Tables (effective January 1, 2021) **For use starting January 1, 2021** Tax Table Instructions Withholding Formula and Instructions Excel: All Tables PDFs: Weekly Biweekly Monthly Semimonthly Annual View 2020 Withholding Tax Tables Electronic Reporting of Wage Statements and Information Returns Iowa Withholding Forms Withholding Due Dates Employers – How to Obtain a Refund of Iowa Withholding Tax Common Questions Calculate Your Withholding Print
