Iowa: What is my State Tax ID?

The Iowa State Tax ID:

This is the 9 digit Permit Number you'll receive from the state after you register for a sales tax license in Iowa.

  • The Permit Number you provide for AutoFile should be associated with your Iowa Business Tax Account.  These details should not be associated with other types of tax accounts with the state of Iowa.
  • Your Iowa Permit Number = IA State Tax ID in the AutoFile enrollment form for Iowa.
  • If you're not sure of this detail for your account, you can check the registration paperwork you received, or contact the state directly to ask them to locate this detail for your account. (We list contact details for each state's DOR here.)