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[US] Iowa state tax registration guide

United States: Taxes

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This guide is an overview of registering your business for Iowa state payroll taxes. For more support, contact the state agency directly.

This guide includes key payroll tax requirements, links to state agency portals, and instructions for granting third-party access to Wave's partner. These steps are required to complete your tax profile in Wave so we can manage your payroll tax payments and filings on your behalf.

Tax requirements

If you’re starting a business with employees in Iowa, you may need to register for the following taxes:

Iowa Withholding Tax 

Visit the Department of Revenue's website for more details about business permit registration requirements.

A paper application may also be available for this tax account. If needed, contact the state directly.

Iowa Unemployment Insurance (SUI) Tax

After receiving your SUI ID, register for an EFT Credit ID used for electronic payments. You will need to enter this number in Wave during your payroll setup.

  • Account Format:
    • SUI Account Number: Typically numeric, assigned after registration
    • EFT Credit ID: A 17-digit number used for electronic payments

Third-Party Administrator (TPA) access

UI TPA access

To authorize filing on your behalf:

  1. Log in to your myIowaUI account.
  2. On the homepage, click Assign Agent from the left-hand menu.
  3. Select the role(s). For example, Filing, Payments, for Check Technologies.

Complete your payroll  tax profile

After completing the registration steps, complete your payroll tax profile. Be sure to update your account with your:

  • Iowa Withholding Tax Permit Number
  • Business eFile Number (BEN)
  • SUI Account Number
  • EFT Credit ID

Additional Support 

For help with your tax account, registration, or technical errors, contact the state agency directly: