A sales and use tax exemption removes the obligation to pay state consumption tax on a purchase, either because of who is buying (a nonprofit, a government agency, a reseller) or because of what is being bought (groceries, prescription drugs, farm equipment, manufacturing inputs). Forty-five states and the District of Columbia impose sales tax, and every one of them carves out categories where the tax does not apply. Claiming an exemption is not automatic. You give the seller a completed exemption certificate at the point of sale, and both of you keep it in your records. Skip the paperwork and the transaction gets treated as taxable, usually with the bill landing on whoever the auditor can reach first.
Who Qualifies as an Exempt Buyer
Some exemptions attach to the buyer. If your organization falls into a recognized category, most or all of your purchases can be made tax-free once you have the right documentation in hand.
Nonprofits, Churches, and Schools
Organizations recognized under Section 501(c)(3) of the Internal Revenue Code are the largest group of exempt buyers. That section covers entities organized for charitable, religious, educational, and scientific purposes, provided no part of their earnings benefits private individuals and the organization stays out of political campaigns.1Office of the Law Revision Counsel. 26 U.S. Code 501 – Exemption From Tax on Corporations, Certain Trusts, Etc. Churches, private schools, homeless shelters, and similar groups all fall under this umbrella.
Here is what trips up many nonprofits: federal 501(c)(3) status does not automatically grant a state sales tax exemption. The IRS itself notes that nonprofit status is a state-law concept, and federal tax exemption is a separate matter.2Internal Revenue Service. Frequently Asked Questions About Applying for Tax Exemption Most states require a separate application to their department of revenue, supporting documents such as articles of incorporation and the IRS determination letter, and approval before any tax-free purchases can be made. The approval process can take several months, and the exemption is typically not retroactive. Handing a vendor your federal determination letter is not enough in most states.
Government Agencies
Federal government purchases are generally immune from state and local sales tax. The Federal Acquisition Regulation states this directly and instructs agencies to take maximum advantage of available exemptions, often by providing a Standard Form 1094 or similar documentation to the seller.3Acquisition.GOV. Federal Acquisition Regulation Subpart 29.3 – State and Local Taxes The immunity flows from constitutional principles of intergovernmental tax immunity rather than any single statute.4Congress.gov. Constitution Annotated State and local agencies also receive exemptions in their own jurisdictions, though the mechanism varies.
Resellers
Businesses buying inventory they intend to resell pay no tax at the time of purchase. Sales tax is meant to hit the final consumer, not every link in the chain. A retailer buying wholesale goods provides the supplier with a resale certificate, which shifts the tax collection duty forward to whoever eventually sells the product to its end user. This is the mechanism that keeps sales tax from compounding at every step of a supply chain.
Which Purchases Are Exempt by Type
Even when the buyer has no special status, certain products and services are excluded based on what they are.
Groceries and Unprepared Food
A majority of states exempt unprepared food purchased for home consumption. A handful tax groceries at a reduced rate, and a few offer income tax credits to offset the grocery tax burden for lower-income households. The dividing line usually falls between food you prepare at home and food someone prepares for you: a bag of rice is exempt, a restaurant meal or a heated deli sandwich generally is not.
Prescription Drugs and Medical Devices
Virtually every state with a sales tax exempts prescription drugs. The exemption generally extends to prescribed medical devices, including prosthetics, hearing aids, and medical oxygen. Over-the-counter medications get less consistent treatment. Some states exempt them, others tax them at the full rate, and a few exempt them only when purchased with a prescription.
Agricultural and Manufacturing Inputs
Farmers and manufacturers get exemptions designed to keep production costs from inflating consumer prices. Agricultural exemptions commonly cover seeds, fertilizer, livestock feed, farm machinery, and irrigation equipment. Manufacturing exemptions generally apply to machinery and tools directly used in producing a finished product, as well as raw materials that physically become part of that product. The key qualifier in most states is “directly used in production.” Office furniture for a factory’s front desk does not qualify; the equipment on the production floor does.
Services
Most states tax tangible goods by default and exempt most services, though the ground is shifting. Professional services like legal advice, accounting, and consulting remain exempt in the vast majority of jurisdictions. Repair labor charged separately from parts is also commonly exempt. A growing number of states have started taxing specific service categories such as landscaping, janitorial work, and data processing. Service treatment is one of the least uniform areas of sales tax law.
Digital Products and Software
Whether digital products are taxable depends on where the buyer is located and how the product is delivered. Most state sales tax laws were written before digital commerce existed and defined the tax base as “tangible personal property.” An e-book or a streamed movie does not fit that definition cleanly. Some states have updated their laws to tax digital audio, video, and books. Others treat digital goods as nontaxable because they are intangible. The 23 states in the Streamlined Sales and Use Tax Agreement use standardized definitions for “specified digital products,” though each state decides whether to actually tax them.5Streamlined Sales Tax Governing Board. Streamlined Sales and Use Tax Agreement Software-as-a-service adds another layer, with states split on whether a cloud software subscription is a taxable sale. If you buy digital products across state lines, check the rules in the state where you use the product, not where the seller is located.
How to Claim the Exemption at Purchase
Claiming an exemption requires paperwork. The buyer completes an exemption certificate and gives it to the seller, who then has authority to complete the sale without collecting tax. The certificate is not filed with the state. Both parties keep copies.
The specific form varies by state, but the fields are broadly the same. The Streamlined Sales Tax exemption certificate, used across the 23 member states, calls for the buyer’s name and address, the seller’s name and address, the buyer’s type of business, the reason for the exemption, and the buyer’s tax identification number for each state where an exemption is being claimed.6Streamlined Sales Tax Governing Board. Streamlined Sales Tax Certificate of Exemption Common reasons include resale, manufacturing use, agricultural use, and exempt organization status. The reason you check has to match a legally recognized exemption category in that state.
Sellers who accept a properly completed certificate are generally protected from liability if the buyer later turns out to have claimed the exemption improperly. Under the SSUTA framework, the seller is not liable for tax, interest, or penalties as long as the completed certificate was provided at or within 90 days of the sale, the seller did not fraudulently fail to collect the tax, and the seller did not solicit buyers to unlawfully claim exemptions.6Streamlined Sales Tax Governing Board. Streamlined Sales Tax Certificate of Exemption The seller is not required to verify the buyer’s ID number or investigate whether the buyer is telling the truth. The obligation is to accept a certificate that appears complete on its face.
That protection vanishes if the seller has no certificate on file at all. During an audit, a missing certificate means the auditor treats the sale as taxable and the seller owes the uncollected tax plus interest. Recovering the tax from the buyer after the fact is rarely practical.
Blanket Certificates and Multi-State Purchases
If a buyer makes regular exempt purchases from the same seller, providing a new certificate for every transaction would be pointless. Blanket certificates cover all qualifying purchases between the same parties over a defined period. The SSUTA certificate defaults to blanket status unless the buyer checks a box designating it for a single purchase, and a blanket certificate stays effective as long as purchases occur no more than 12 months apart, unless the state allows a longer gap.6Streamlined Sales Tax Governing Board. Streamlined Sales Tax Certificate of Exemption
Outside the SSUTA states, validity periods range widely. Some states let blanket certificates remain effective indefinitely until the buyer revokes them in writing. Others impose expiration windows of one to five years, or cap validity at 48 months. A few treat the certificate as effective for the calendar year only. If you rely on long-standing vendor relationships, build a periodic review into your compliance process instead of assuming a certificate filed years ago still works.
Cross-border purchases add another wrinkle. Roughly ten states refuse out-of-state resale certificates entirely, requiring the buyer to register in that state and obtain a state-specific certificate before making an exempt purchase. Even states that accept out-of-state certificates sometimes require that the certificate contain the same information their own forms demand. Two multi-jurisdiction forms simplify this. The Multistate Tax Commission publishes a Uniform Sales and Use Tax Resale Certificate that 36 states accept.7Multistate Tax Commission. Uniform Sales and Use Tax Resale Certificate The SSUTA certificate covers its 23 member states and lets buyers claim exemptions in multiple states on a single form.6Streamlined Sales Tax Governing Board. Streamlined Sales Tax Certificate of Exemption
When You Owe Use Tax Instead
Use tax is the companion to sales tax, and it catches purchases that slip through the sales tax net. When you buy a taxable item and the seller does not charge sales tax, you owe use tax directly to your state at the same rate. The most common scenario is buying from an out-of-state vendor. The item does not become tax-free just because the seller did not charge you.
This obligation falls on businesses and individual consumers alike. Businesses typically self-assess and report use tax on their regular sales tax returns. Individual consumers are supposed to report it too, often through a line on their state income tax return or a separate use tax return. Compliance among individuals has historically been low. The Supreme Court’s 2018 decision in South Dakota v. Wayfair reduced the practical scope of the problem by allowing states to require out-of-state sellers to collect tax even without a physical presence in the state.8Supreme Court of the United States. South Dakota v. Wayfair, Inc. Most states now impose economic nexus thresholds, commonly $100,000 in sales or 200 transactions, above which remote sellers must register and collect.
One detail that catches people: if you paid some sales tax to another state but less than your home state’s rate, you owe the difference. Paid 4% to the seller’s state when your state charges 6%? You owe 2% in use tax. Most states give a credit for tax legitimately paid elsewhere, but the credit never exceeds your own state’s rate.
A boundary worth noting: casual, occasional, or isolated sales by individuals, like selling a used couch or holding a garage sale, are exempt in most states, though not all. The exemption generally does not extend to motor vehicles, boats, or aircraft, which stay taxable regardless of who sells them.
Recordkeeping and Penalties for Misuse
Both parties need to retain exemption certificates. The minimum retention period varies, with most states requiring sellers to keep certificates for at least three to four years from the date of sale, and some extending the requirement if an audit or proceeding is pending. Keeping certificates longer than the minimum is cheap insurance. An auditor showing up six years later to review a high-value transaction will not care that your state’s minimum was four years if you cannot produce the certificate.
Digital storage has made this easier. Most states accept electronic copies, and many sellers now collect certificates through online portals at the point of sale rather than chasing paper forms after the fact. The SSUTA specifically permits electronic certificates and does not require a signature when the certificate is in electronic form.6Streamlined Sales Tax Governing Board. Streamlined Sales Tax Certificate of Exemption Whatever system you use, records need to be organized well enough to produce a specific certificate when an auditor asks. A filing cabinet stuffed with unsorted PDFs is not a recordkeeping system.
Using a certificate to avoid tax on a purchase that does not qualify is fraud, and states treat it seriously. Penalties typically include repayment of the tax that should have been collected, interest running from the original due date, and civil penalties calculated as a percentage of the underpaid tax. Some states impose per-occurrence fines. In more egregious cases, fraudulent use is a criminal misdemeanor carrying possible jail time and fines running into the thousands.
The most common problem is not outright fraud but carelessness. A buyer provides a resale certificate for items they end up using in their own business rather than reselling. Auditors look for exactly this by comparing the types of goods purchased tax-free against what the business actually sells. A restaurant buying kitchen equipment on a resale certificate will have a hard time arguing those purchases were for resale. If you use an exemption certificate, make sure the reason you checked matches what actually happens to the product.