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.
Upcoming Tax Webinars
Join the Department for our free monthly tax education webinars.
IDR and COVID-19
Stay up to date with the Department's recent announcements and FAQs regarding COVID-19


Administrative Rules - Available for Public Comment; Adopted & Filed
November 18, 2020
The Department of Revenue has submitted a new proposed rule to the Iowa Legislature, available for public comment through December 8, 2020. See notice for details. Additionally, proposed rules previously submitted to the Iowa Legislature and have been adopted and filed, effective December 23, 2020.
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.

IDR Announces 2021 Interest Rates, Deductions, Income Tax Brackets
October 14, 2020

Des Moines, Iowa – The Iowa Department of Revenue has finalized individual income tax brackets and individual income tax standard deduction amounts for the 2021 tax year (applicable for taxes due in 2022) and the 2021 interest rate, which the agency charges for overdue payments.

Important Upcoming Iowa Department of Revenue Tax Deadline
September 22, 2020

Third Quarter Income Tax Estimate

The Department is reminding taxpayers that Iowa has not extended the due date for estimated income tax payments. The third quarter installment of tax year 2020 estimated income tax for taxpayers filing on a calendar year basis is due September 30, 2020.

Iowa Government Working Group to meet September 9
September 04, 2020

The Government Working Group of the Governor’s Economic Recovery Advisory Board will meet from 10 a.m. to noon on Wednesday, September 9. The public is invited to attend.