Sales Tax Guide · Updated November 7, 2026

Resale Certificates & Tax-Exempt Purchases

Published November 7, 2026 · Reviewed by the USA Sales Tax Calculator editorial team.

A resale certificate is the document that lets a business buy goods without paying sales tax because it intends to resell them. It is not a coupon and it is not a general business tax exemption. The buyer must actually be in the business of selling the item, the item must be purchased for resale rather than for use, and the certificate must contain the information the seller's state requires. A defective certificate can shift the tax, penalty, and interest back to the seller years later.

Resale versus exemption versus direct pay

What a valid resale certificate contains

Most states require the buyer's legal name and address, the buyer's sales tax permit or registration number, a description of the property being purchased, a statement that the property is purchased for resale, the buyer's signature, and the date. Some states accept a multistate certificate such as the Streamlined Sales Tax Certificate of Exemption, while others require their own form. Some states require the certificate at the time of sale; others allow it to be obtained later during an audit. The safest practice is to collect a signed certificate before the first tax-free sale and to refresh it when the buyer's registration number or business status changes.

The certificate is only as good as the buyer's registration. A buyer that gives a false or expired permit number can invalidate the certificate, and the seller may be assessed for the tax it failed to collect. Sellers should verify the number with the state's online lookup when one is available, especially for a new customer or a large first order. The certificate does not transfer the tax obligation to the buyer unless the state's law specifically says so.

What can be purchased for resale

The resale exemption applies to goods that the buyer will resell in the same form or as a component of a product that will be sold. A furniture retailer can buy sofas for resale. A manufacturer can buy raw materials that become part of a finished product, although the rules for manufacturing exemptions vary. A service provider generally cannot use a resale certificate for office supplies, computers, or equipment it uses in its own business. Those are purchases for use, not for resale, and they are taxable unless another exemption applies.

Bundled transactions can complicate the analysis. If a buyer purchases a software license for resale but also receives support services for its own use, the invoice should separate the resale component from the taxable service. Some states allow a resale certificate for the tangible component only; others treat the bundle as a single transaction. Itemizing the invoice and matching the certificate to the resale portion is the best defense.

Drop shipping and multistate sales

Drop shipping is a common source of resale-certificate problems. A retailer sells to a customer, a manufacturer ships directly to the customer, and the manufacturer does not have a relationship with the retailer's customer. If the retailer is registered in the ship-to state, the manufacturer can accept the retailer's resale certificate. If the retailer is not registered, some states require the manufacturer to collect tax on the sale unless the retailer provides a drop-ship certificate or is otherwise exempt. The rules differ by state, and the manufacturer may be treated as the seller for that transaction.

Recordkeeping and audit defense

Keep certificates organized by customer, with the date, the certificate type, and the states in which it is valid. A certificate that is valid in one state may not be valid in another, so a multistate seller should collect a certificate for each state where it sells tax-free. During an audit, the burden is usually on the seller to prove that the sale was exempt. A missing certificate, an unsigned form, or a certificate that describes the wrong property can turn an exempt sale into a taxable one with penalties.

State examples

California requires a resale certificate and a valid seller's permit number; it also recognizes a multistate certificate in some circumstances. Texasrequires a Texas resale certificate and a sales tax permit number.Florida accepts an annual resale certificate issued by the state. New Yorkrequires a properly completed exemption certificate and a valid registration number. Illinois requires a resale certificate that includes the buyer's registration number and a description of the property. Washingtonaccepts a reseller permit and requires buyers to renew it periodically.

A seller's checklist

1. Confirm the buyer is registered for sales tax in the relevant state.
2. Collect a signed certificate before the first tax-free sale.
3. Verify the registration number when the state provides a lookup.
4. Describe the property being purchased for resale.
5. Keep the certificate with the invoice and shipping documents.
6. Refresh certificates when a customer's registration changes.

The use tax guideexplains what happens when a business buys taxable goods without paying tax, the contractor guidecovers materials that are installed rather than resold, and themethodology page documents the rate sources used by the calculators.

Common certificate mistakes

The most common mistake is using a resale certificate for items the business will use rather than resell. Office furniture, computers, and shop supplies are purchases for use, not inventory. Another common mistake is accepting a certificate that lists the wrong state or an expired registration number. A certificate that is valid in the buyer's home state may not be valid in the state where the goods are delivered, especially when the buyer is not registered there.

A third mistake is failing to update certificates when a customer changes its business structure or registration. A certificate signed by an employee who has left the company may still be valid if the company authorized the purchase, but the seller should confirm the current registration. Keep a certificate log with the customer name, the state, the registration number, the date received, and the date reviewed.

Occasional sales are not the same as resale. A business that sells a used desk once is not making an occasional sale in the same way as a retailer selling inventory. The occasional-sale exemption, where it exists, is narrow and usually does not apply to a business that regularly sells goods. Do not use a resale certificate to cover a one-time sale of business equipment unless the state specifically allows it.