Idaho State Tax Commission

Permit registration and account maintenance

• You might need to register for a permit. Read more on our Idaho Business Registration (IBR) page »
• If you have a permit, use the taxpayer self-service portal to make certain changes to your account information.

File and pay

• E-file business income taxes
• E-file most permit-based taxes using a TAP account
• Make payments

Multistate commerce

Businesses involved in multistate commerce may be interested in our voluntary disclosure agreement program.

Tax guides

Hub pages

Hub pages provide a quick overview of all our resources on a major topic.

Check out the list on the right side of this page — or at the bottom of the page, if you're on a mobile device like a cell phone.

More:

• A list of all the tax types we work with
• Successors' Liability Clearance Letter
• Tax Clearance Certificate

Business resources in Idaho

• Idaho business portal at business.idaho.gov
• Idaho Small Business Development Center
• Idaho Biz Help – federal, state, and local regulatory requirements
• Idaho Secretary of State
• Idaho Department of Commerce

Federal business resources

• US Small Business Administration (SBA)
  • SBA Boise office
  • SBA Seattle office
• USA.gov
• US Department of Labor
• US Department of Commerce
  • US Patents and Trademark Office
  • US Census Bureau
  • Minority Business Development Agency
• Internal Revenue Service (IRS)
• IRS's Tax Information for Businesses
• US Copyright Office