Do you need a business license to sell t-shirts online? There is no single federal license, but almost every seller needs at least two things: a state seller’s permit so you can legally collect sales tax, and a general business license from the city or county where the business operates. On top of those, federal law imposes labeling rules on apparel, the IRS wants a tax ID, and copyright and trademark law can bite hard if you print the wrong design.
What the Federal Government Requires
The federal government does not issue a general business license for selling t-shirts. What it does require is a tax identification number. The IRS issues an Employer Identification Number (EIN), a nine-digit number that identifies your business for tax purposes.1Internal Revenue Service. Get an Employer Identification Number You need one even without employees, because banks typically require an EIN to open a business checking account, and wholesale blank-shirt suppliers often ask for one before setting up a commercial account.
Applying costs nothing. The IRS issues the number immediately when you apply online. Using an EIN instead of your Social Security Number on business paperwork also reduces your exposure to identity theft.
Seller’s Permit and Sales Tax
Sales tax is where online t-shirt sellers run into the most compliance work. If you sell to customers in a state that charges sales tax, you generally need authorization to collect and remit that tax. Five states have no statewide sales tax at all: Alaska, Delaware, Montana, New Hampshire, and Oregon. Every other state imposes one, and most require sellers to obtain a seller’s permit, sometimes called a sales tax permit or resale certificate, before collecting.
The permit is typically free or costs a modest fee, and it does two jobs. It authorizes you to collect sales tax from buyers. It also lets you purchase blank t-shirts and supplies from wholesalers without paying sales tax on those items, since you’re buying them for resale. Using a resale certificate for personal purchases is treated seriously. States can impose fines or even criminal penalties for misuse.
When You Owe Sales Tax in Other States
Before 2018, you only had to collect sales tax in states where you had a physical presence. The Supreme Court changed that in South Dakota v. Wayfair, Inc., ruling that states can require remote sellers to collect sales tax based purely on their economic activity in the state.2Supreme Court of the United States. South Dakota v. Wayfair, Inc.
The threshold in the original South Dakota law was $100,000 in sales or 200 or more separate transactions in the state within a year. Nearly every state with a sales tax has since adopted a similar economic nexus standard, though the specific dollar and transaction thresholds vary. Some states have dropped the transaction count entirely; Illinois eliminated its transaction threshold effective January 1, 2026. A new seller probably won’t hit these thresholds right away, but track sales by state from day one so you know when you cross a line.
Selling Through Etsy, Amazon, or Other Marketplaces
If you sell through a platform, there’s a significant simplification. Nearly all states with a sales tax have adopted marketplace facilitator laws that shift the obligation to collect and remit sales tax from you to the platform itself. The marketplace handles the tax calculation, collection, and payment for sales made through its site.
This does not take you off the hook entirely. If you also sell through your own website, at craft fairs, or through any channel outside the marketplace, you remain responsible for collecting and remitting sales tax on those sales yourself. Marketplace facilitator laws only cover transactions that flow through the platform.
Local Business License and Home Permit
Most cities and counties require a general business license to operate within their boundaries, regardless of what you sell or whether you work from home. These are sometimes called business tax certificates. Fees range widely by jurisdiction. Some charge a flat fee under $100, while others scale the cost based on your projected revenue.
Running the business from your home brings a second question. If you’re printing shirts in the garage or storing inventory in a spare bedroom, you may also need a home occupation permit, which verifies that your business activities comply with local zoning rules. Zoning ordinances can restrict commercial signage on your property, the volume of delivery trucks, and how much inventory you can store. Failing to get this permit can result in fines or an order to cease operations, and it’s one of the most commonly overlooked requirements for home-based businesses.
FTC Labels on Every Shirt
Federal law requires specific labels on textile products before you can legally sell them. Under the Textile Fiber Products Identification Act, every garment you sell must carry a permanent label showing the fiber content by percentage and weight, the country where the product was manufactured, and the name or registered identification number of the manufacturer or the company responsible for marketing the product.3Federal Trade Commission. The Textile Products Identification Act
Separately, the FTC’s Care Labeling Rule requires manufacturers and importers of clothing to attach permanent care instructions covering washing, drying, ironing, and bleaching, so consumers know how to clean the product throughout its useful life. If a garment can be damaged by a cleaning method a consumer might reasonably try, the label must include a warning.4Federal Trade Commission. Care Labeling of Textile Wearing Apparel and Certain Piece Goods
Print-on-demand services usually handle labeling on the blank garments they ship. If you buy blanks and print them yourself, or if you’re adding your own brand labels, the responsibility is yours. A product sold without proper labels is considered misbranded under federal law.
Copyright and Trademark Risk
Intellectual property is where t-shirt businesses get into the most expensive trouble. The risks run in both directions. Someone might copy your original artwork, and you might accidentally print someone else’s protected material.
Your own original t-shirt artwork qualifies for copyright protection automatically the moment you create it and fix it in a tangible form, which includes saving a digital file.5Office of the Law Revision Counsel. 17 USC 102 – Subject Matter of Copyright in General You cannot sue for infringement, though, unless you’ve registered the work with the U.S. Copyright Office. Registration also unlocks statutory damages, which are much easier to prove than actual losses.6U.S. Copyright Office. Fees If you’re building a brand name, federal trademark registration through the USPTO protects your name and logo so competitors can’t use something confusingly similar.7United States Patent and Trademark Office. Trademark Process
The faster way to lose a t-shirt business is to print someone else’s copyrighted artwork, trademarked logo, or licensed character. Under the Lanham Act, statutory damages for using a counterfeit mark range from $1,000 to $200,000 per mark per type of product sold. If a court finds the infringement was willful, that ceiling jumps to $2,000,000, and the trademark owner can recover attorney’s fees on top.8Office of the Law Revision Counsel. 15 USC 1117 – Recovery for Violation of Rights
Never print a design you didn’t create yourself or license properly. Fan art of popular characters, sports team logos, trending phrases that are trademarked, and designs pulled from image searches are all common sources of infringement claims. Etsy and Amazon will remove listings and can permanently suspend your account after repeat violations.
Taxes Once You Start Earning
An EIN is the start of your federal tax obligations, not the end. Sole proprietors report business income and expenses on Schedule C, attached to their personal Form 1040. Schedule C is where you deduct the cost of blank shirts, ink, printing equipment, shipping supplies, platform fees, and other business expenses from your gross revenue to arrive at taxable profit.9Internal Revenue Service. About Schedule C (Form 1040), Profit or Loss from Business (Sole Proprietorship)
If your net profit exceeds $400 in a year, you also owe self-employment tax, which covers Social Security and Medicare. The combined rate is 15.3%: 12.4% for Social Security (on earnings up to $184,500 in 2026) and 2.9% for Medicare with no earnings cap.10Internal Revenue Service. Publication 15-A, Employer’s Supplemental Tax Guide (2026) This catches many new sellers off guard because employed workers only see half these rates on their paychecks; the employer pays the other half. When you’re self-employed, you pay both halves. If you expect to owe $1,000 or more in combined income and self-employment tax for the year, the IRS expects quarterly estimated payments rather than one annual payment, and missing them triggers a penalty even if you’re owed a refund at year-end.11Internal Revenue Service. Estimated Taxes
Your choice of business structure affects all of this. A sole proprietorship is the default if you simply start selling without filing anything, and it means your personal assets are exposed if the business gets sued or can’t pay its debts.12U.S. Small Business Administration. Choose a Business Structure An LLC creates a legal wall between personal finances and the business, and it changes how you file taxes.13Internal Revenue Service. Business Structures If you plan to operate under a name different from your legal name or your LLC’s official name, most jurisdictions also require you to register a “doing business as” (DBA) name with the county clerk.
How to Apply
Most state and local agencies offer online portals where you can apply for seller’s permits and business licenses and pay fees in one session. Some permits are issued almost immediately after submission. Jurisdictions without a fully digital system may require a mailed application with a check or money order, and a few localities still require in-person visits, with official licenses arriving within a few weeks.
Before starting any application, gather your EIN, your chosen business name, your business structure documentation, a physical business address, and a clear description of what you sell and how. Having everything ready before you sit down avoids the frustration of half-completed applications timing out or being rejected for missing information.