Small businesses that sell certain taxable goods and/or services must collect sales tax from their customers, and remit it to the appropriate state agency on a regular basis.

The goods or services that are subject to sales tax can be determined by reviewing the State Department of Revenue rules for each location that you have sales.

Each city or county and state will have different rates for its region. You must register, and obtain a sales tax permit, for each state prior to collecting sales tax.

Sales tax rules and regulations are ever changing and have become increasing complex in recent years. In 2018, the US Supreme Court decision in South Dakota v. Wayfair, Inc. significantly changed the sales tax landscape for small businesses.

Before the decision, states could generally require a business to collect sales tax only if the business had a physical connection to the state. The ruling allowed states to tax businesses with no physical presence in the state (remote business) in addition to in-state businesses, referred to as Economic Nexus. 

Understanding the rules around your products or services, how you deliver them, and to whom you must submit sales tax is a crucial piece in small business compliance.

Here is what you need to know. (Warning, it's a big one.)