Welcome to the Iowa Department of Revenue

The mission of the Iowa Department of Revenue is to serve Iowans and support state government by collecting all taxes required by law, but no more.

2021 Withholding Tables and Calculator
IDR announces new income withholding tax tables for 2021 and an updated withholding calculator.
Announcing 2021 Rates
Review finalized individual income tax brackets, standard deduction amounts, and interest rates.
IDR and COVID-19
Stay up to date with the Department's recent announcements and FAQs regarding COVID-19


IDR Releases State Tax Guidance: Iowa Small Business Relief Grant Program
January 19, 2021

On June 29, 2020 Governor Reynolds signed into law House File 2641. The Department has released guidance to explain this tax change as it relates to the following:

IDR Releases State Tax Guidance: Computers and Computer Peripherals
January 15, 2021

The Iowa Department of Revenue has released new sales tax guidance:

Administrative Rules - Adopted & Filed
January 12, 2021
The Department previously submitted the following proposed rule to the Iowa Legislature, Collection of Court Debt, which has been adopted and filed, effective January 1, 2021. See individual notice for details.
IDR Releases Updated State Tax Guidance: Online & Marketplace Sales Guidance
December 11, 2020

The Iowa Department of Revenue has released new guidance as it reflects to Sales Tax.

IDR Issues New Income Withholding Tax Tables for 2021
November 10, 2020

The Iowa Department of Revenue is issuing updated income tax withholding formulas and tables for 2021 to continue to align Iowa withholding with recent changes in state tax laws.

For individuals, this means that employers will be reducing the amount of Iowa tax withheld from employees’ paychecks, beginning January 1, 2021, increasing take-home wages for individuals.

Important Upcoming IDR Tax Deadlines: Income & Franchise Tax Return
October 21, 2020

As a result of the August 10, 2020, derecho storm that affected Iowa, the Internal Revenue Service extended until December 15, 2020, certain tax-filing and tax-payment deadlines falling on or after August 10, 2020, and before December 15, 2020.