What is a seller's permit?

A seller's permit is a license that allows a business or individual to sell goods or services, and it's usually required to collect sales tax. For vendors selling at markets, craft fairs, or events, it's one of the first things you need to get in order before you can legally set up a booth. Rules vary by state, county, and jurisdiction and some areas require a new permit for every event location, while others accept a single statewide permit.