A sales tax license is a permit your state requires you to get before you can legally sell taxable goods or services

A sales tax license (also called a seller's permit, resale license, or sales permit depending on your state) is an official document that authorizes you to collect sales tax from customers. Your state's tax authority issues it. You cannot legally sell taxable items without one — not online, not in a physical store, not at a market booth. The license tells the state who you are, what you sell, and where you sell it.

The license itself does not cost much — usually between $0 and $50 as a one-time fee, though some states charge annual renewal fees. What matters is that you get it before your first sale. Selling without one can result in fines, back taxes, and penalties that add up quickly.

Key Takeaways

  • You must obtain a sales tax license from your state before you sell any taxable goods or services, whether in person or online.
  • The license is issued by your state's Department of Revenue or similar tax authority and typically costs little to nothing upfront.
  • Once licensed, you collect sales tax from customers at the point of sale and send it to the state on a regular schedule.
  • Different states have different rules about what products are taxable and what threshold of sales triggers the requirement to get licensed.
  • You renew your license periodically (usually annually or every two years) and must update it if your business location or type changes.

How a sales tax license works in practice

When you have a sales tax license, you become the state's agent for collecting tax. At checkout, you add the state sales tax rate (which varies by state and sometimes by county) to the customer's bill. The customer pays that tax to you. You then send that money to the state on a schedule — usually monthly or quarterly, depending on how much you sell.

The license also gives you the right to buy inventory without paying sales tax yourself. If you are a retailer, you can show your license to a wholesaler and buy goods tax-free. You only collect tax when you sell to the end customer. This prevents the same item from being taxed twice.

Your license is tied to a specific business location and type of sales. If you open a second location or start selling a new category of goods (like adding food to a gift shop), you may need to update your license or get an additional one.

Who needs a sales tax license

Most people who sell physical goods need a license. This includes retail stores, online sellers, farmers selling at markets, and people selling handmade items. Some service businesses also need one — it depends on your state and what service you provide. A plumber might need one; a consultant might not.

A few categories are usually exempt. Nonprofits with tax-exempt status do not need a sales tax license for their exempt activities. Some states exempt certain goods like groceries or prescription medications from sales tax altogether, so you would not collect tax on those items even with a license. But you still need the license to operate legally.

The threshold for needing a license also varies. Some states require one as soon as you make your first sale. Others have a minimum sales amount — for example, $1,000 or $5,000 per year — before you must get licensed. Check your state's rules before you start selling.

How to get a sales tax license

You obtain a license through your state's Department of Revenue, Department of Taxation, or similar agency. Most states now let you register online through their website. A few still require you to mail or hand-deliver a paper form. The process usually takes a few minutes to a few days.

You will need basic information: your legal business name, the address where you will sell, your Social Security number or Employer Identification Number (EIN), and a description of what you sell. Some states ask about your expected monthly sales volume. Have these details ready before you start.

After you submit, the state issues your license number. Some states mail you a physical certificate; others just give you a number to keep on file. Either way, you are now authorized to collect sales tax. Keep your license information in a safe place — you will need it for tax filings and if you are ever audited.

Renewing and updating your license

Sales tax licenses expire and must be renewed. Most states require renewal every one or two years. The state will usually send you a notice before it expires, but it is your responsibility to renew on time. Selling with an expired license is treated the same as selling without one.

You must also update your license if you move your business to a new address, change your business structure (for example, from sole proprietor to LLC), or stop selling certain types of goods. Some changes require a new license; others just require notifying the state. Check your state's rules when anything about your business changes.

What happens if you sell without a license

Selling taxable goods without a license is illegal in every state. Penalties vary, but they are serious. You may face fines (sometimes hundreds or thousands of dollars), be required to pay back taxes plus interest, and in some cases face criminal charges. Online platforms like eBay and Etsy now require sellers to confirm they have a license in many states.

The state can also shut down your sales and seize inventory. If you have been selling without a license and realize the mistake, contact your state's tax authority immediately. Many states have programs to help new businesses come into compliance without maximum penalties, but only if you report it yourself before an audit.

Sales tax license versus business license

A sales tax license is not the same as a general business license. A business license (sometimes called a business registration or operating license) says you are allowed to operate a business in your city or county. A sales tax license specifically authorizes you to collect sales tax. You may need both, depending on your location and business type.

Some cities and counties require a business license for any business operating in their area. Your state requires a sales tax license if you sell taxable goods. These are separate registrations with different agencies. Check with both your local government and your state tax authority to find out what you need.

Frequently Asked Questions

Do I need a sales tax license if I sell online?

Yes. Online sellers need a sales tax license in the state where they are located and in most states where they have customers. The location of your business and the location of your customer both matter. Check your state's rules and the states where you ship to most often.

What if I sell items that are not taxable in my state?

You still need a sales tax license to operate legally. Even if most of what you sell is tax-exempt (like groceries), you need the license on file. You simply do not collect tax on those specific items. The license covers all your sales activity.

Can I get a sales tax license if I do not have a physical store?

Yes. You can get a license as a home-based business, online seller, or mobile vendor. You will need a business address (your home address is fine) and a description of where and how you sell. Some states have specific rules for online sellers; check your state's website.

How long does it take to get a sales tax license?

Most online applications are processed within a few days to a week. Some states issue a license number immediately. Paper applications can take two to four weeks. Do not start selling until you have your license number — selling before it is issued is illegal.

What if my business closes or I stop selling?

Notify your state tax authority. You do not have to renew your license, and you should file a final sales tax return if you collected any tax. Failing to notify the state can result in penalties and continued renewal notices even after you have stopped selling.