One of the most confusing aspects of US sales tax is that it doesn't apply to everything. The list of what is and isn't taxable varies dramatically from state to state — sometimes even within a state, depending on the type of product, the buyer's status, and the intended use of the item. Understanding exemptions can save both consumers and businesses significant money.
Common Product Exemptions by Category
Groceries and Food
Food is one of the most debated categories in sales tax law. The general rule is that unprepared food (grocery items you take home and cook) is exempt from sales tax in most states, while prepared food (restaurant meals, hot takeout, deli items) is taxable. However, the details vary enormously:
- Fully exempt states (no tax on any food): California, Arizona, Nevada, and many others exempt most grocery items
- Partially taxing states: Some states like Tennessee and Alabama apply sales tax to all food, including groceries, at a reduced rate
- States that fully tax groceries: Mississippi and South Dakota apply the standard sales tax rate to all food including unprepared groceries
- The "prepared food" line: A hot rotisserie chicken from a grocery store deli may be taxable while a cold rotisserie chicken is not — the line between "grocery" and "prepared food" is frequently litigated
Candy and soft drinks present yet another layer: many states that exempt "food" specifically carve out candy and soda as taxable items. The definitions of "candy" vary — some states consider any item with flour as an ingredient to be "not candy" (making chocolate-covered pretzels exempt while plain chocolate is not).
Prescription Drugs and Medical Devices
All 45 sales-tax states exempt prescription drugs from sales tax. This is one of the most universal exemptions in US tax law. Over-the-counter (OTC) medications vary: some states exempt them, others do not. Medical devices like wheelchairs, prosthetics, and hearing aids are typically exempt, though definitions differ. Insulin is explicitly exempt in most states even as an OTC product.
Clothing and Apparel
Several states exempt clothing from sales tax, though with varying restrictions:
- Pennsylvania: Most clothing is exempt, with exceptions for formal wear and sports equipment
- New Jersey: Most clothing is exempt
- New York: Clothing items under $110 per item are exempt from state and local sales tax (but not NYC's specific clothing tax)
- Minnesota: Most clothing is exempt, with exceptions for athletic uniforms
- Vermont and Massachusetts: Some clothing exemptions with price thresholds
In all other states, clothing is generally taxable at the same rate as other retail goods.
Agricultural Equipment and Supplies
Most states provide broad exemptions for items used in agricultural production. Tractors, farm equipment, seeds, fertilizer, livestock feed, and veterinary services for livestock are commonly exempt. The rationale is that agriculture produces food, and taxing agricultural inputs would increase food prices. Definitions of "farming" for exemption purposes can be narrow — hobby farms may not qualify.
Manufacturing Equipment and Industrial Machinery
To encourage industrial investment, most states exempt machinery and equipment directly used in manufacturing and industrial processes. The item must typically be used directly in production — office furniture and administrative computers used at a factory generally do not qualify for the manufacturing exemption even if located at the plant.
Buyer-Based Exemptions: Who Can Buy Tax-Free?
Resale Purchases
Businesses that purchase goods for resale (not for their own use) can buy those goods tax-free by providing a valid resale certificate to the seller. The theory is that the tax will be collected when the goods are ultimately sold to the end consumer. This is why wholesale transactions between businesses are typically tax-free.
A retailer buying inventory, a restaurant buying ingredients, a contractor buying materials to build a customer's home — all of these involve resale exemptions. However, if a business purchases something for its own use (office supplies, computers), those purchases are generally taxable even for the same business that also makes resale purchases.
Nonprofit Organizations
501(c)(3) nonprofits, charitable organizations, religious institutions, and educational institutions are exempt from sales tax in most states — but only for purchases directly related to their exempt purpose. A church buying pews is typically exempt; the same church buying a table for a revenue-generating catering business may not be.
Nonprofits must apply for and receive a state-issued exemption certificate to claim this benefit. Simply being a nonprofit doesn't automatically make purchases tax-free — the seller needs to see the certificate.
Government Entities
Federal, state, and local government agencies generally purchase goods and services tax-free. Purchases must be billed directly to the government entity; if an employee pays personally and seeks reimbursement, many sellers will still charge tax (since the individual could be making a personal purchase).
How Exemption Certificates Work
To make a tax-exempt purchase, the buyer provides the seller with a completed exemption certificate before or at the time of purchase. This document states the basis for the exemption (resale, nonprofit, agricultural use, etc.) and typically includes the buyer's sales tax registration number.
The seller keeps the certificate on file as proof that they were authorized to sell without collecting tax. If the certificate turns out to be fraudulent or misused, the liability shifts to the buyer. Sellers who accept exemption certificates in good faith are generally protected from having to remit uncollected tax.
Most states now accept the Streamlined Sales Tax (SST) uniform exemption certificate, which is accepted in all 24 member states — simplifying compliance for multi-state businesses.
Sales Tax Holidays: Temporary Exemptions
Many states hold annual "sales tax holidays" — short periods (usually a weekend) when certain items are temporarily exempt from sales tax. Common categories include:
- Back-to-school clothing and supplies (August, in states like Florida, Texas, and Virginia)
- Hurricane preparedness supplies (Florida, before hurricane season)
- Energy-efficient appliances (some years, in select states)
- Firearms and hunting supplies (Second Amendment-focused holidays in some Southern states)
Checking Whether a Purchase Is Taxable
The fastest way to verify whether a specific item is taxable in your state is to check your state's Department of Revenue website, which typically publishes lists of exempt categories. For calculating the tax on purchases that are taxable, use our reverse sales tax calculator to instantly determine the pre-tax price and tax amount from any receipt total.