Sales Tax and Seller's Permits for Card Show Vendors: A Plain-English Primer

Many collectors start vending as a hobby: a few binders, a borrowed table, and some cash in a pouch. But once you're selling regularly at card shows, you're running a retail business, and that usually means sales tax. It's one of the least exciting parts of vending, and one of the most important to get right.

Note: This article is a general overview, not legal or tax advice. Rules differ by state and change over time, so always confirm with your state's department of revenue or a tax professional.

Do card show vendors need a seller's permit?

In most U.S. states with a sales tax, the answer is yes. Tax authorities generally treat temporary vendors at shows, fairs, and flea markets the same as brick-and-mortar retailers. Some states, such as Connecticut, Texas, and Florida, explicitly require a permit even if you only sell for a single day.

Temporary and event permits

Some states offer special short-term options for vendors who sell only occasionally:

• Colorado offers a single-event license for vendors at one-off events.
• California requires a seller's permit, and vendors who already hold one register a sub-permit for each special event location. Event organizers there are expected to verify vendors' permits before renting space.
• Idaho lets infrequent sellers choose between a temporary permit and a standard one.

A few states also have thresholds for occasional sellers. Because the rules vary so much, check the requirements for every state you plan to vend in, especially if you travel to regional shows.

Ask the show organizer

Promoters often know exactly what local vendors need, and in some states organizers can be held responsible for tax on sales by vendors without permits. Many will ask for your permit number on the vendor application. Asking early saves you a scramble the week of the show.

Make your pricing tax-clear

Decide whether your prices include tax or whether you add it at checkout, then make that obvious. A small sign or a line on your table-top retractable banner, such as "Prices include tax" or "Tax added at checkout," prevents awkward conversations mid-sale.

Keep records like a real business

• Log every sale, including cash sales, by show and date.
• Use a POS app that records tax automatically if possible.
• Save receipts for table fees, travel, and booth gear. Branded displays like a retractable banner or custom tablecloth are business expenses; talk to your accountant about how to record them.
• Keep a copy of your permit with your booth kit. Some shows ask you to display it.

Look like the business you are

Getting your permits in order is part of treating vending as a real business. The other part is looking like one. Collectors trust vendors who appear established, and promoters favor them for better table placement. A coordinated setup like the Complete Vendor Booth Setup plus professional business cards signals that you're here for the long run.