Iowa: What is my Business E-File Number?

The Iowa Business E-File Number:

This is an 8 digit number that is mailed to you by the state after you register for an Iowa sales tax license. This number is also used to login to your e-file account at the Iowa Department of Revenue website.

  • The Business E-File number you provide for AutoFile should be associated with your Iowa Business (Sales) Tax account registration.  These details should not be associated with other types of tax accounts with the state of Iowa, such as Individual Income Tax or Corporate Income Tax accounts.
  • If you're not sure of this number, please contact Iowa's DOR and ask them to confirm this detail for your account. You can reach them by calling 800-367-3388.

Iowa DOR