Withholding Tax Information

Updated Tables (effective January 1, 2019)

**For use starting January 1, 2019**

• Tax Table Instructions
• Withholding Formula and Instructions

Excel: All Tables 
PDFs:

• Weekly
• Bi-weekly
• Monthly
• Semi-monthly
• Annual

Calculate Your Withholding

• Electronic Reporting of Wage Statements and Information Returns
• Application For Extension of Time to File Iowa W-2 Wage Statements
• Iowa Withholding Forms (filter by Withholding Tax tax type)
• Withholding Due Dates
• Employers – How to Obtain a Refund of Iowa Withholding Tax 
• Common Questions (filter by Withholding)