The Iowa withholding tax tables did NOT change for 2013. Please continue to use the current Iowa withholding tables, which became effective April 1, 2006.
Remember that Iowa does not require those issuing W-2s or 1099s to send us a copy. The issuer should, however, keep copies of W-2s and 1099s for at least four years from the end of the year for which the forms apply.
This guide includes withholding tables, computer variables, and examples.