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 |
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Iowa Withholding Tax Reference Information
Copies of W-2s / 1099s sent to Iowa?
Electronic Reporting of Wage Statements and Information Returns
Application For Extension of Time to File Iowa W-2 Wage Statements