Most people are familiar with sales tax—that extra percentage stores collect from customers in many states. If you own a store in a state that collects a sales tax, you must add state and local sales taxes to the customer's total bill, collect it and send it off to the local tax authority. But if you sell your products online, you may—or may not—have similar sales-tax-collection duties.
Sales tax basics
If you're online seller trying to decide if you need to collect sales tax, first determine if your home state has a sales tax at all. Most states do impose sales taxes, but several—like Alaska and Oregon—do not.
Some cities and towns charge an additional sales tax. For example, in California, the statewide sales tax rate was 7.25% in 2017, and local districts can impose their own additional sales taxes. A seller must know the local tax rates and collect them from his or her customers. Many states that collect sales tax also exempt certain items—like food products—from taxation.
When you are obligated to collect sales tax online
The basic rule for collecting sales tax from online sales is:
- If your business has a physical presence, or “nexus”, in a state, you must collect applicable sales taxes from online customers in that state.
- If you do not have a physical presence, you generally do not have to collect sales tax for online sales.
A physical presence means that you have some business facility in that state. It could be any type of business operation, such as:
- A storefront
- An office
- A warehouse
The nexus required between seller and state
The word "nexus" is used by the law to describe the connection sellers must have with a particular area before they are required to charge and collect taxes for online sales there.
Different states and courts define this connection differently. However, most agree that if you have a store or an office in a state, this requires you to collect and submit sales taxes in that state.
Many states have laws that describe eligibility factors, so be sure to start there. If you aren't certain whether you have a sufficient presence in a state for sales tax purposes, check with that state's taxing agency.
Selling across many states
If you send products or inventory to a large, online company that distributes them to buyers for you, you may have created "connections" in many states in addition to your own.
For example, if you sell online from your own home in California and don't have any business presence in other states, you have "nexus "—or a physical presence—only with California.
But if you sell your products through Amazon’s FBA program (Fulfillment by Amazon), you send inventory to Amazon first. That relationship could require you to collect sales tax from customers in other areas where Amazon does business.
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