Taxable purchases are retail transactions — buying goods, services, or digital content — that carry a legal obligation to pay sales tax. The seller usually collects the tax at the register and forwards it to the state, but the legal burden falls on the buyer. What counts as taxable varies more than most people expect. Physical goods are almost always in. Services and digital products depend heavily on the state. And some purchases you’d assume are taxed, like groceries or prescriptions, often aren’t.
Physical Goods
Nearly every state with a sales tax starts from the same assumption: if you buy a physical item at retail, it’s taxable. Furniture, electronics, appliances, vehicles, clothing in most states, building materials, sporting goods — the default is taxation, and exemptions are the exception. The tax attaches at the final retail sale, so goods moving through the supply chain between manufacturers and wholesalers aren’t taxed at each step. Only the person buying for personal use or consumption pays.
The trigger is typically the transfer of ownership or possession. Walk out of a store with a $900 refrigerator in a jurisdiction with a 7% combined rate and you owe $63 in sales tax. For big-ticket items, the math gets more interesting. In many states, trading in a vehicle reduces the taxable price of the new one. Buy a $30,000 car and trade in one worth $12,000, and you owe tax on $18,000, not the full sticker price. That trade-in credit can save hundreds of dollars, but not every state offers it.
Taxable Services
Services get far less uniform treatment than physical goods. Most states only tax services that appear on a specific legislative list — equipment repair, dry cleaning, landscaping, pest control, and similar categories. If the service isn’t named in the statute, it isn’t taxed. The same haircut or plumbing call can cost different amounts depending on which side of a state line you’re on.
A small number of states take the opposite approach and tax virtually everything unless the law specifically carves out an exemption. Hawaii’s general excise tax applies to nearly all business activity at a base rate of 4%, covering services that most other states leave untouched. South Dakota, New Mexico, and West Virginia follow a similarly broad model. In those states, professional fees for accounting, consulting, or legal work can carry a tax charge that would be unthinkable elsewhere.
Construction labor is another area that surprises people. In many states, labor for new construction or permanent improvements to real property isn’t directly taxed as a service. The contractor pays sales tax on the materials and builds that cost into the project price. Repair work on existing property is more likely to be taxed as a service. The line between “improvement” and “repair” is drawn differently depending on where the work happens.
Digital Goods, Streaming, and Software
The shift from physical media to downloads and streaming forced states to rethink what counts as a taxable purchase. Buying a movie on a disc was always taxable. Buying the same movie as a download was, for years, a gray area. That gap has mostly closed. States now routinely tax streaming video, music downloads, e-books, and other digital content, treating a digital license the same way they’d treat a physical copy.
The Streamlined Sales and Use Tax Agreement helped standardize how states define these products.1National Conference of State Legislatures. Taxation of Digital Products Connecticut, Iowa, and Pennsylvania are among the states that explicitly tax streaming and downloaded content across the major categories.2Multistate Tax Commission. Analysis of State Laws on Digital Goods and Software
Software-as-a-Service subscriptions are the newest battleground. When you pay a monthly fee for cloud-based tools like project management software or design platforms, roughly half the states now treat that payment as taxable. Classification varies. Some states call it a digital product, others categorize it as data processing, and states like California and Florida still exempt it entirely because no tangible property changes hands. The trend leans toward taxation, but the rules remain uneven.
Bundled Transactions
Things get complicated when a single price covers both taxable and non-taxable items — a software subscription that includes non-taxable consulting hours, for example. Under the Streamlined Sales Tax framework, if the seller breaks out separate prices at the time of sale, tax applies only to the taxable portion. If the items are sold at a single bundled price, the entire transaction is taxable by default unless the taxable elements represent 10% or less of the total value.1National Conference of State Legislatures. Taxation of Digital Products When buying a bundle, ask the seller to itemize the receipt. It might save you tax on the non-taxable portion.
Common Exemptions
Plenty of everyday purchases fall outside sales tax entirely. Knowing which ones can change how you budget in higher-rate jurisdictions.
Groceries
A majority of states exempt unprepared grocery food from sales tax. A handful tax groceries at a reduced rate, and a few — including Alabama, Mississippi, and South Dakota — tax them at the full state rate. The exemption typically covers staples like bread, milk, produce, and meat. Prepared food, meaning restaurant meals, deli items, and food sold hot, almost always stays taxable, even in states that exempt raw groceries. Candy and soft drinks are another gray area, with about half the states that exempt groceries still taxing them.
Prescription Drugs and Medical Devices
Prescription medications are exempt from sales tax in nearly every state. Illinois is the notable outlier, taxing prescriptions at a reduced 1% state rate. Over-the-counter medications get less consistent treatment. Medical devices prescribed by a doctor, such as wheelchairs, prosthetics, and hearing aids, are typically exempt as well.
Clothing
Most states tax clothing at the standard rate, but a handful exempt it. Minnesota, New Jersey, Pennsylvania, and Vermont fully exempt clothing purchases. Massachusetts, New York, and Rhode Island exempt clothing below certain price thresholds — $175, $110, and $250, respectively.3Tax Foundation. State Sales Taxes and Clothing Exemptions In those threshold states, a $90 pair of shoes is tax-free, but a $300 jacket is fully taxable.
Items Bought for Resale
Businesses buying inventory to resell don’t pay sales tax on those purchases. Tax gets collected at the final retail sale to the end consumer. To buy tax-free, the buyer provides the seller with a resale certificate — a signed document stating the goods are being bought for resale, not personal use. Misusing a resale certificate to dodge tax on items you actually keep is fraud, and auditors watch for it closely.
Sales Tax Holidays
Many states designate short windows, typically a weekend in late summer, where certain purchases are tax-free. These holidays most often cover back-to-school items like clothing, school supplies, and sometimes computers, each subject to price caps. Specific dates, eligible items, and caps change annually and vary by state, so check your state revenue department before assuming a purchase qualifies.
Use Tax on Out-of-State Purchases
Use tax exists to close a simple loophole. If you buy something from a seller who doesn’t collect your state’s sales tax, you still owe the tax. This came up historically with catalog orders and cross-border shopping, but internet purchases turned it into a much bigger issue. The rate is identical to your local combined sales tax rate, so there’s no financial advantage to buying from an out-of-state vendor.
The legal landscape shifted with the Supreme Court’s 2018 decision in South Dakota v. Wayfair, Inc., which overruled the old requirement that a seller needed a physical presence in a state before that state could force it to collect sales tax. The South Dakota law at issue required collection from remote sellers delivering more than $100,000 in goods or services into the state, or completing 200 or more separate transactions there annually.4Supreme Court of the United States. South Dakota v. Wayfair, Inc. Most states have since adopted similar economic nexus thresholds, with $100,000 in annual sales as the most common trigger.
After Wayfair, most large online retailers collect sales tax automatically. Smaller sellers, private-party transactions, and purchases from foreign websites can still slip through. When that happens, the obligation shifts to you. Most states with an income tax include a use tax line on the state return, letting you report and pay what you owe once a year. Some states also let you pay directly to the revenue department after each purchase. If an audit turns up unreported purchases, you owe the original tax plus interest and penalties.
How Much Sales Tax You’ll Pay
Rates combine state and local levies, and the spread is wide. Five states — Alaska, Delaware, Montana, New Hampshire, and Oregon — impose no general state sales tax. Among states that do tax sales, state-level rates range from under 3% to California’s nation-leading 7.25%. Local taxes push combined rates higher, with Louisiana averaging the highest at 10.11%. The population-weighted national average is 7.53%.5Tax Foundation. State and Local Sales Tax Rates, 2026
That means the same $500 laptop costs $537.50 in a jurisdiction with a 7.5% combined rate and $500 flat in Portland, Oregon. For large purchases, the difference adds up fast. Some states also apply different rates to different categories, with reduced rates for groceries and higher rates for prepared food or lodging.
What Happens If You Don’t Pay
For consumers, the most common compliance failure is ignoring use tax on out-of-state purchases. States catch this through audits. You owe the original tax, plus interest calculated from the date the tax should have been paid, plus a penalty that typically ranges from 10% to 25% of the unpaid amount depending on the state and how late the payment is.
For businesses, the stakes climb. Late filing penalties for sales tax returns generally run from flat fees in the $50 to $250 range up to percentage-based penalties that can reach 25% or more of the tax owed. The bigger exposure is personal liability. Many states can hold a “responsible person” — an owner, officer, or anyone with authority over the company’s finances — personally liable for sales tax the business collected from customers but never sent to the state. That collected tax is treated as trust fund money belonging to the government. Making an honest mistake on a use tax return usually results in a manageable penalty. Collecting sales tax from customers and pocketing it is treated far more seriously, and in some states crosses into criminal territory.