If you sell taxable goods or certain services in a state that imposes a sales tax, you almost always need a vendor license for sales tax collection before your first sale. The license, sometimes called a seller’s permit or sales tax permit, is issued by the state’s department of revenue and authorizes you to charge sales tax, keep the records the state expects, and file returns on its schedule. Five states have no statewide sales tax; everywhere else, selling taxable products without registering can trigger fines, back-tax liability, and in some cases criminal charges.
Who Needs to Register
The requirement is broad. If your business sells tangible personal property — clothing, electronics, furniture, food, building materials, or anything else a customer can physically take home — you need a permit in any state with a sales tax. Many states extend the requirement to specific services as well, such as landscaping, dry cleaning, or software subscriptions, though which services are taxable varies from state to state.
It doesn’t matter whether you operate a storefront, a food truck, a craft-fair booth, or a flea-market table. Temporary and event-based sellers often need a short-term permit for the specific event, even if they don’t sell year-round. The obligation kicks in before your first taxable sale, not after. Some states issue a permit number instantly through an online application; others mail a physical certificate within a few weeks.
The Five States Without a Sales Tax
Alaska, Delaware, Montana, New Hampshire, and Oregon impose no statewide sales tax. A business operating exclusively in one of these states doesn’t need a traditional vendor license for sales tax purposes. Alaska is the exception within the exception: some local jurisdictions there levy their own sales taxes, and those localities may require registration.
Even where there’s no sales tax, you may still need a general business license, a professional license, or local permits depending on what you sell and where you sell it. The absence of a sales tax isn’t the absence of every license.
Selling Online Into Other States
If you sell online, your obligation extends past your home state. Since the U.S. Supreme Court’s 2018 decision in South Dakota v. Wayfair, states can require out-of-state sellers to collect sales tax once the seller crosses certain revenue or transaction thresholds within that state. This is called economic nexus.
The most common threshold is $100,000 in sales during the current or prior calendar year. A few states set higher bars. California and Texas use $500,000. New York requires $500,000 combined with more than 100 transactions. Some states also trigger the requirement at 200 separate transactions regardless of dollar amount. Once you cross the threshold in a given state, you need to register there, collect that state’s sales tax, and file returns on its schedule.
This gets complicated fast for growing online businesses. Thresholds, measurement periods, and rules about whether exempt sales count toward the total all differ by state. Checking your exposure quarterly is worth the effort. Discovering you crossed a threshold six months ago costs far more than registering on time.
Selling Through Amazon, Etsy, or Other Marketplaces
Marketplace facilitator laws now exist in virtually every sales-tax state. If you sell through Amazon, Etsy, Walmart Marketplace, or a similar platform, the platform is responsible for calculating, collecting, and remitting sales tax on the transactions it facilitates.
That doesn’t retire your licensing obligation. You’re still on the hook for sales tax on anything you sell outside the marketplace — through your own website, at trade shows, or from a physical location. Some states also require marketplace sellers to hold their own permit even when the platform handles the tax. The clean approach: register wherever you have a filing obligation, let the marketplace handle tax on its sales, and handle the rest yourself.
Common Exemptions
Not every sale of a physical product requires a license. Isolated or casual sales — the occasional garage sale, a one-time sale of personal belongings — are typically exempt. States draw the line differently on what counts as “occasional.” Some cap the exemption at a dollar amount of annual sales, some look at frequency, and most treat regular or repeated selling as a business activity that requires a license no matter how informal it feels.
Nonprofit and charitable organizations can qualify for exemptions, but the scope is narrower than many people assume. Federal tax-exempt status under Section 501(c)(3) doesn’t automatically exempt an organization from state sales tax obligations. Many states grant exemptions only for sales directly tied to the organization’s charitable purpose, not for unrelated commercial activity. Any nonprofit planning regular sales should check with its state revenue department before assuming it’s covered.1Internal Revenue Service. Exempt Organization Types
Wholesale transactions are the other common exemption. When you sell goods to a business that intends to resell them, the buyer provides a resale certificate instead of paying sales tax, and the obligation to collect tax from the end customer shifts to that buyer. Keep resale certificates on file for at least four years. Without one, you can be held liable for the uncollected tax during an audit.
How to Apply
Apply through your state’s department of revenue, tax commission, or equivalent agency. Most states offer online applications and process them immediately, sometimes issuing your permit number the same day. Paper applications are still available in most states but take longer, sometimes several weeks.
The application typically asks for:
- Your legal business name, any DBA name, physical address, and contact information.
- Your business structure — sole proprietorship, partnership, LLC, or corporation.
- Your Social Security Number if you’re a sole proprietor, or your Federal Employer Identification Number for other structures.
- The date your business started or will start, a description of what you sell, and sometimes the names of your primary suppliers.
Most states charge nothing for the initial application. A few charge modest fees, generally under $100. The bigger surprise for some applicants is a security deposit, which a state can require if you have a history of tax noncompliance or if the business is considered high-risk. Deposits are typically tied to estimated tax liability and are refundable once you establish a record of timely filing.
Once approved, most states mail the license to your business address and require you to display it visibly at your place of business. Online-only sellers should keep the certificate accessible for any auditor or customer who asks.
What You Owe After You’re Licensed
Getting the license is the starting line. Once registered, you’re required to file sales tax returns on the schedule your state assigns — monthly, quarterly, or annually — based on how much tax you collect. States reassess that frequency as your sales volume changes.
Even in periods when you make no taxable sales, most states still require you to file a return showing $0 in tax due. Skipping a filing because you had nothing to report is a common mistake that draws penalties and can put your license at risk.
You also need to keep detailed records of every sale, the tax collected, and any exemption certificates you accepted. The IRS recommends keeping tax-related records for at least three years, and many states require four years of sales tax records specifically.2Internal Revenue Service. How Long Should I Keep Records? Four years covers you in most situations.
Renewals and Closing the Account
Whether a vendor license expires depends on the state. Some permits remain valid indefinitely as long as you keep filing and stay in compliance. Others require renewal on a set cycle of one, two, or five years. Missing a renewal deadline can lapse your license and leave you operating without one, so tracking your state’s specific rule matters.3U.S. Small Business Administration. Apply for Licenses and Permits
When you close your business, sell it, or stop making taxable sales, formally close the sales tax account with the state. Leaving it open means the state still expects returns and will come looking for them. The process generally involves notifying the revenue department, filing a final return through your last day of business, paying any remaining tax due, and reporting how you disposed of any leftover inventory. If you still hold inventory that you originally bought tax-free for resale, you may owe use tax on it when you close.
What Happens If You Sell Without One
The penalties go beyond a slap on the wrist. At minimum, you’ll owe every dollar of sales tax you should have collected during the unlicensed period, plus interest. Businesses in this situation usually absorbed the tax rather than charging it to customers, which means the back-tax bill comes entirely out of pocket.
States add financial penalties on top. Some charge a flat fee, others calculate a percentage of unpaid tax, and the penalty grows the longer the noncompliance continues. A state can also issue a cease-and-desist order and shut the business down until it comes into compliance.
For repeated or willful violations, some states treat operating without a permit as a criminal offense. Penalties can escalate with each violation, starting as a minor misdemeanor and reaching jail time for persistent offenders. Each day of unlicensed operation can count as a separate violation, so exposure adds up quickly. Registering upfront is almost always cheaper and simpler than dealing with the consequences of skipping it.