Iowa Administrative Code Title 701 — Department of Revenue
Iowa Admin. Code r. 701—304.8(422) — Withholding and estimated tax credits
An employee from whose wages tax is withheld shall claim credit for the tax withheld on the employee’s income tax return for the year during which the tax was withheld. Credit will be allowed only if a copy of the withholding statement is attached to the return. Taxpayers who have made estimated income tax payments shall claim credit for the estimated tax paid for the taxable year.
Source: official text