Sales Tax Permit: Who Needs One and How to Get It

Last updated November 5, 2026 · Written by the EIN Registration filing team

You generally need a sales tax permit before you make taxable sales in a state. You apply with that state’s revenue agency, usually online. It may be called a seller’s permit, sales tax license or certificate of authority. The application often asks for your EIN.

The permit application often asks for your EIN. We prepare and file your SS-4 and email you the number.

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Who needs one

You usually need one if you sell taxable goods or services in a state where your business has a sufficient connection. That can come from a location, staff or inventory there, or from sales volume alone for online sellers. What is taxable varies by state.

How to get one

  1. Get your EIN if you will need one. See how to apply.
  2. Find your state’s revenue agency. The IRS keeps a list of state government websites.
  3. Apply, usually online, with your legal name, address, owners and what you sell.
  4. Display or store the permit as your state requires.
  5. Collect, file and pay on the schedule the state gives you, even if some periods have no sales where required.

Permits and other numbers

DocumentWhat it doesComes from
Sales tax permitLets you collect sales taxState revenue agency
Resale certificateLets you buy for resale without paying tax, where allowedYou complete it, using your permit
EINIdentifies the business for federal taxesIRS

Sales tax is just one state account. How to get a state tax ID number covers the others, and our new business checklist shows where this fits.

Quick answers

Is a sales tax permit the same as an EIN?

No. The IRS issues the EIN. Your state issues the permit, and the application often asks for your EIN.

Is a sales tax permit the same as a resale certificate?

No. The permit lets you collect tax. A resale certificate is what you give a supplier so you can buy items for resale without paying tax, where your state allows it.

Do I need a permit for online sales?

Often, yes. You generally need one in any state where you have a sufficient connection, which can come from sales volume alone.

How much does a sales tax permit cost?

It varies by state. Many charge little or nothing, but some charge a fee or ask for a deposit, so check with your state's agency.

Do all states have sales tax?

No. Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax, though local tax can apply in Alaska.

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Related guides

You can also apply for an EIN directly with the IRS at irs.gov at no cost.