A retail sale is a transfer of goods or certain services to a buyer who intends to use or consume them rather than resell them, and in most of the country that transaction triggers retail sales tax. Forty-five states and the District of Columbia impose sales tax on retail sales, with combined state and local rates ranging from under 3% to over 11% depending on where the sale happens. Five states have no statewide sales tax at all. The seller usually collects the tax at checkout and sends it to the state; when the seller doesn’t, the buyer often owes the equivalent use tax directly.
What Counts as a Retail Sale
The dividing line is the buyer’s purpose at the time of purchase. Buy a printer for your home office and you’re the end user, so the sale is retail and taxable. An office supply store buying the same printer to stock its shelves is making a wholesale purchase, because it plans to resell the item. Revenue departments look at intent, not at the item itself.
Most jurisdictions define “tangible personal property” as anything you can see, weigh, measure, or touch. That covers electronics, furniture, clothing, and vehicles, and it reaches less obvious categories like prewritten software sold on physical media. The transfer can be an outright sale, a lease, or a rental. Leasing equipment still counts as a retail transaction if you’re the one using it, because possession passes to you in exchange for payment.
Not every exchange between individuals falls inside the system. Selling your used lawnmower to a neighbor is generally treated as a “casual” or “occasional” sale, exempt from sales tax. States typically allow one or two such sales in a 12-month period; a third can reclassify you as a dealer who has to register and collect.
What Gets Taxed and What Doesn’t
Physical goods sold at retail are taxable in virtually every state that imposes a sales tax. Services, digital products, and labor charges get much less uniform treatment.
Services
Some states tax a broad range of services, from landscaping to dry cleaning to personal training. Others limit sales tax almost entirely to tangible goods. A few tax nearly all services unless a specific exemption applies; others exempt nearly all services unless the service is specifically listed. If you sell services, your state’s baseline approach determines almost everything.
Digital Products
Software downloads, streaming subscriptions, e-books, and digital music increasingly fall within the tax base. A growing majority of states with a sales tax now tax at least some categories of digital goods, but the specifics vary. One state might tax downloaded software and exempt streaming video; another might tax both. For digital sales, the customer’s “ship to” location controls which state’s rules apply.
Installation and Labor
When a seller delivers and installs tangible property, the labor portion is often taxed differently from the product. As a general rule, installation labor is not taxable if the seller itemizes it separately on the invoice. Bundle the labor into the price of the goods with no separate line, and many states treat the entire amount as taxable. Clear invoicing protects both sides.
Bundled Transactions
A bundled transaction combines taxable and nontaxable items into a single price, like a discounted cell phone sold with a two-year service contract. Under rules adopted by states in the Streamlined Sales and Use Tax Agreement, a transaction generally is not treated as bundled if the taxable portion is 10% or less of the total price. When taxable tangible goods make up 50% or less of the bundle, the transaction may also fall outside the bundled classification. Sellers who can document the split from their regular business records avoid having tax applied to the whole package.
Common Exemptions
Even in states that broadly tax retail sales, certain categories are carved out:
- Groceries. A majority of states exempt unprepared food purchased for home consumption. The exemption usually covers staples but not prepared meals or restaurant food, and some states tax candy and soft drinks at the full rate.
- Prescription medications. Nearly every state with a sales tax exempts prescription drugs. Over-the-counter medicines get less consistent treatment.
- Nonprofit and government purchases. Qualifying 501(c)(3) organizations and government agencies can buy free of sales tax in most states, but they must present a valid exemption certificate to the seller at the time of the transaction.
- Manufacturing equipment. Most states exempt machinery and equipment used directly in the manufacturing process. The exemption typically requires the equipment to be used primarily in production, not in administration, marketing, or storage.
- Resale purchases. A business buying inventory to resell provides the seller with a resale certificate. That shifts the tax to the eventual retail sale to the final consumer.
Certificates shift risk to the seller. If you accept a certificate that turns out to be invalid, incomplete, or expired, an auditor will hold you liable for the tax that should have been collected. A well-organized certificate file is the single best defense during a sales tax audit.
Use Tax When the Seller Doesn’t Charge Sales Tax
Use tax is the mirror image of sales tax. If you buy a taxable item and the seller doesn’t charge sales tax, you owe use tax to your home state at the same rate that would have applied locally. The obligation reaches both businesses and individuals: a company that orders office furniture from an out-of-state vendor that doesn’t collect tax owes use tax, and so does an individual who orders a taxable product online and receives it untaxed. Most states allow a credit for sales tax you already paid to another state, so you aren’t taxed twice.
Individual use tax compliance has historically been low, but the expansion of economic nexus after the Wayfair decision has narrowed the gap. Most major online retailers now collect sales tax in every taxing state, so the situations where a consumer actually needs to self-report have shrunk, especially for purchases from small or foreign sellers.
What Sellers Have to Do
Register for a Sales Tax Permit
Every state with a sales tax requires businesses to register for a seller’s permit or sales tax license before collecting any tax. The permit itself is free in most states. A handful charge application fees, generally from $12 to $100, and a few require a refundable security deposit on top of the fee. You cannot legally collect sales tax without a permit, and operating without one can bring fines or, in some states, criminal charges.
Collect and Remit
Once registered, you collect the correct tax from the buyer at the point of sale. Those funds belong to the state and should be tracked separately from operating revenue. You then file returns on a monthly, quarterly, or annual schedule set by your volume and your state’s rules, and remit the collected tax to the state revenue department. Many states now require electronic filing once a business exceeds a liability threshold that can be as low as a few hundred dollars a month.
Keep Records
States typically require you to keep sales tax records, including receipts, returns, exemption certificates, and resale certificates, for at least three to four years from the date of the transaction or the filing of the return, whichever is later. Some tax professionals recommend keeping exemption and resale certificates indefinitely, because a suspected underpayment can extend the audit window. If you can’t produce a certificate during an audit, you’ll owe the tax that should have been collected, plus penalties and interest.
Penalties
Late filing penalties across states commonly run from 5% to 25% of the unpaid tax, with interest on top. Fraud penalties are far steeper; some states impose 50% or more for intentional evasion. Every state also authorizes criminal prosecution for willfully failing to remit collected sales tax. Depending on the state and the amount involved, the charge can be a misdemeanor carrying up to a year in jail or a felony with potential prison time of several years. Collecting sales tax from customers and keeping it is treated as theft from the government.
When Out-of-State Sales Trigger Collection
Before 2018, a business generally needed a physical presence in a state, such as an office, warehouse, or employees, to be required to collect that state’s sales tax. In South Dakota v. Wayfair, Inc., the Supreme Court ruled that states can require remote sellers to collect based on economic activity within the state, even without any physical presence. The South Dakota law at issue required collection from sellers delivering more than $100,000 in goods or services into the state, or completing 200 or more separate transactions there, on an annual basis.
Every state with a sales tax has since adopted some form of economic nexus rule. The most common threshold is $100,000 in annual sales, and a few states set higher bars. The 200-transaction alternative has been dropped by roughly half the states that once used it, and more remove it each year, moving the trend toward a sales-dollar-only test. Sellers who ship across state lines need to monitor their sales into each state and register once they cross the threshold; back taxes and interest add up quickly if you miss the trigger.
Selling Through a Marketplace vs. Your Own Site
If you sell through Amazon, eBay, Etsy, or a similar platform, the platform likely collects and remits the sales tax for you. Every state with a sales tax has enacted a marketplace facilitator law that shifts the collection obligation from the individual seller to the platform. A platform usually qualifies as a “marketplace facilitator” when it lists products for sale on behalf of third-party sellers and processes payment from the buyer. Payment processors that only handle the transaction mechanics, without listing or advertising the product, generally fall outside the definition.
The catch is that these laws don’t cover sales made through your own website. If you sell both on a marketplace and through your own store, the platform handles tax on the marketplace side, but you’re responsible for collecting and remitting on direct sales wherever you have nexus.
Drop Shipping
Drop shipping involves three parties: the retailer who takes the customer’s order, the supplier who ships directly to the customer, and the customer who receives the product. The taxable retail sale runs between the retailer and the customer. The supplier’s sale to the retailer is a wholesale transaction that qualifies for the resale exemption.
The applicable rules and rate come from the “ship to” state. The retailer collects tax from the customer under that state’s rules. To avoid paying sales tax on the wholesale leg, the retailer gives the supplier a resale certificate. Many states accept the retailer’s home-state certificate even if the retailer isn’t registered in the delivery state, but roughly ten states are stricter and require their own form with a valid in-state registration number. When neither the retailer nor the supplier collects tax, the customer still owes use tax on the purchase.
Simplifying Multi-State Compliance
Collecting in dozens of states used to be a compliance nightmare. The Streamlined Sales and Use Tax Agreement, a cooperative effort among 23 member states, standardizes definitions, simplifies rate structures, and creates uniform administrative procedures for sales and use tax.
The most practical benefit for remote sellers is the Streamlined Sales Tax Registration System. A seller can register in all member states through a single online application at no cost, and the system issues one identification number that works across all participating states. Sellers registered through the system can also use a Certified Service Provider at no charge in member states where they qualify as a remote seller. These providers integrate tax calculation software with the seller’s ordering system, determine the correct rate on each transaction, prepare and file returns in every registered state, remit the tax, and handle audit notices. For a business that triggers nexus in a dozen states at once, that kind of turnkey support can be the difference between manageable overhead and an unworkable administrative load.