A sales tax license is a permit your state requires before you can legally sell taxable goods or services to customers
A sales tax license (also called a seller's permit, sales permit, or resale certificate depending on your state) is an official document that authorizes you to collect sales tax from customers and send it to your state tax authority. Without one, you cannot legally ring up a sale in most states. The license tells the state who you are, what you sell, and where you sell it — so the state knows where to send tax bills and audit notices.
You get a sales tax license from your state's Department of Revenue, Department of Taxation, or equivalent agency — not from your city or county, though some states require local registration too. The license itself is usually free or costs between $10 and $50, though some states charge annual renewal fees. The real cost is the sales tax you collect and must send to the state on a schedule (monthly, quarterly, or annually depending on your sales volume and state rules).
If you sell without a license, you face back taxes, penalties, and sometimes criminal charges. If you collect tax but don't send it in, the state can hold you personally liable even if your business is a corporation or LLC. This is one of the few tax debts that can survive bankruptcy.
Key Takeaways
- A sales tax license is required before you legally sell taxable goods or services, and you obtain it from your state's tax authority, not your city.
- The license itself is usually free or low-cost, but you must collect and remit sales tax to the state on a regular schedule — the real financial obligation.
- You need a separate license for each state where you have a physical location or meet that state's sales tax nexus threshold.
- Some businesses, like those selling only non-taxable items or operating as nonprofits, may not need a license, but you should confirm with your state before assuming you are exempt.
- Selling without a license can result in back taxes, penalties, and personal liability even if your business is incorporated.
Who needs a sales tax license
You need a sales tax license if you sell taxable goods or services directly to end customers (called B2C sales). That includes retail stores, restaurants, repair shops, salons, contractors, and online sellers. If you sell only to other businesses that will resell the goods (B2B), you typically do not need a license in your home state, though you may need one in states where you have a warehouse or office.
Some businesses are exempt. Nonprofits with a 501(c)(3) status often do not need a license, though they may still need to register with the state. Businesses that sell only non-taxable items — like groceries in most states, or prescription medications — may not need one either. But "exempt" varies wildly by state and by product category. A clothing store in one state pays tax on all items; in another, tax applies only to items over a certain price. Before you assume you do not need a license, contact your state's tax authority and describe exactly what you sell.
If you operate in multiple states, you need a separate license in each state where you have a physical location (an office, warehouse, or store) or where you meet that state's sales tax nexus threshold. Nexus rules are complex and have changed since online sales grew. Some states now require you to collect tax if you ship more than a certain dollar amount into the state, even without a physical presence. Check with each state's tax authority before you launch.
How to get a sales tax license
Start by visiting your state's Department of Revenue website and looking for "sales tax license," "seller's permit," or "business registration." Most states now let you register online; a few still require paper forms mailed in. You will need your Social Security Number or Employer Identification Number (EIN), your business name and address, a description of what you sell, and your expected monthly sales volume.
The process usually takes 15 to 30 minutes. Some states issue the license when ready online; others mail it within one to two weeks. A few states require you to pass a background check or provide proof of local zoning approval before they issue the license. If you are unsure whether your location is zoned for business, contact your city or county zoning office before you explore — some states will not issue a license for an address that is not properly zoned.
Once you have the license, you will receive a license number and often a physical certificate to display in your place of business. Keep the number handy — you will need it to open a business bank account, buy inventory without paying sales tax (using a resale certificate), and file your tax returns. Some states require you to post the license visibly in your store or office; check your state's rules.
Sales tax collection and remittance schedules
Once you have a license, you are responsible for collecting sales tax from customers at the point of sale and sending it to the state on a regular schedule. The tax rate varies by state and sometimes by county or city — it ranges from 0% (in states like Montana and Oregon) to over 10% in some cities. Your state tax authority will tell you the rate for your location when you register.
How often you remit depends on your sales volume. High-volume sellers (usually those with over $5,000 in monthly sales) remit monthly. Smaller sellers remit quarterly or annually. Some states let you choose, or they assign you a schedule based on your expected sales. You file a return showing total sales, taxable sales, tax collected, and tax owed. If you collected more tax than you owe (because some items were non-taxable or you made mistakes), you may receive a refund, though some states keep the overage.
Most states now require online filing and payment through their tax portal. A few still accept checks mailed in. Missing a important date can result in penalties and interest, even if you have the money to pay. Set a calendar reminder for your due date and mark it as non-negotiable — this is one of the few debts that cannot be discharged in bankruptcy and can follow you personally.
Resale certificates and buying inventory without tax
Once you have a sales tax license, you can buy inventory from wholesalers and distributors without paying sales tax — but only if you provide a resale certificate (also called a resale permit or exemption certificate). This document tells the wholesaler that you are buying goods to resell, not for your own use, so they do not have to collect tax from you.
The resale certificate is usually a form you read from your state's tax authority website or request from the wholesaler. You fill in your business name, license number, and what you are buying, sign it, and give it to the seller. They keep it on file as proof they did not have to collect tax. You are then responsible for collecting tax when you sell those goods to customers.
If you buy inventory without providing a resale certificate, you pay sales tax to the wholesaler. You then collect tax again from your customers — meaning the tax is paid twice. You cannot deduct the tax you paid to the wholesaler from the tax you collect from customers, so you lose money. Always provide a resale certificate when buying for resale.
Renewing and updating your sales tax license
Most states require you to renew your sales tax license annually or every two years. The renewal process is usually straightforward — you log into your state's tax portal, confirm your business information is still correct, and pay any renewal fee (usually $0 to $50). Some states send you a renewal notice by mail; others require you to initiate renewal yourself.
If your business changes — you move to a new location, add a new product line, or change your business structure — you may need to update your license. Some changes require a new process; others are just updates to your existing record. Contact your state tax authority if you are unsure. Failing to update your license can result in penalties or the state sending tax bills to your old address.
If you close your business, you should notify your state tax authority and request to have your license cancelled. This stops the state from sending you renewal notices and tax bills. You may also need to file a final tax return showing zero sales. Check your state's requirements for business closure.
Common mistakes to avoid
The biggest mistake is not getting a license at all and hoping the state will not notice. The state tracks business registrations, landlord reports, and credit card processor records. If you are selling and do not have a license, you will eventually be found. The penalties are steep: back taxes, interest, and penalties that can total 25% or more of the tax owed.
The second mistake is collecting tax but not remitting it. This creates personal liability — even if your business is an LLC or corporation, the state can come after you personally for unpaid sales tax. Some states can garnish your wages or freeze your bank accounts. Do not borrow from sales tax money to cover other business expenses, even temporarily.
A third mistake is assuming you do not need a license because you sell online or out of state. If you ship into a state and meet that state's nexus threshold, you need a license in that state. The rules are complex and have changed multiple times in the last five years. If you sell across state lines, research each state's requirements or hire a tax professional to advise you.
Frequently Asked Questions
Do I need a sales tax license if I sell only on Etsy or eBay?
Yes, if you sell taxable goods. Etsy and eBay do not issue licenses for you. You must get a license from your state and any other state where you meet the sales tax nexus threshold. You are responsible for collecting and remitting tax, even though the platform does not help you do it. Some platforms now offer tax collection services, but you still need the license.
What is the difference between a sales tax license and an EIN?
An EIN (Employer Identification Number) is a federal tax ID used for income tax and payroll. A sales tax license is a state permit for collecting sales tax. You may need both. A sole proprietor with no employees might need only a sales tax license; a business with employees needs both an EIN and a sales tax license.
Can I use someone else's sales tax license to buy inventory?
No. A sales tax license is tied to a specific business and business owner. Using someone else's license or resale certificate is tax fraud. Each business must have its own license and resale certificate.
What happens if I forget to collect sales tax from a customer?
You are still responsible for sending the tax to the state, even if you did not collect it from the customer. You cannot deduct the loss from your next tax payment. This is why point-of-sale systems that automatically calculate tax are important — they prevent mistakes that cost you money.
Do I need a sales tax license if I sell services instead of products?
It depends on the service and your state. Some states tax all services; others tax only specific ones like repairs, haircuts, or consulting. Some states do not tax services at all. Check your state's rules for the specific service you offer before you assume you do not need a license.