A Washington sales tax exemption removes the state's retail sales tax on a specific transaction. In many states, non-profit status or a general resale card exempts you from tax at checkout. Washington has tighter requirements, with specific exemption categories, documentation, and rules about what a seller must confirm before treating a sale as tax-free. In fiscal year 2024, Washington collected US$34.5 billion in state taxes, with nearly US$15.9 billion of that revenue coming from state retail sales and use tax.

Below, we'll cover who qualifies for an exemption, which products and services carry a statutory exemption, and the certificates Washington uses depending on the exemption claimed.

Key takeaways

• Washington applies exemptions to the transaction rather than the buyer's identity. Non-profit or government status alone doesn't exempt a purchase.

• Resale purchases require a Washington Department of Revenue-issued reseller permit. Many other exemptions use a separate Buyer's Retail Sales Tax Exemption Certificate.

• Sellers who accept an exemption certificate in good faith are generally protected from liability, but that depends on the certificate being complete and plausible.

What is a Washington sales tax exemption?

A Washington sales tax exemption removes the requirement to collect or pay retail sales tax on a specific transaction, based on either what's being sold or how it's going to be used. An exemption removes the 6.5% statewide sales tax rate from the sale.

Who qualifies for a sales tax exemption in Washington?

Some buyer categories in Washington consistently qualify for sales tax exemptions.

Eligible purchases include:

• Direct purchases by federal agencies (though usually not purchases made by contractors on the government's behalf)

• Purchases by enrolled tribal members and tribes on their own reservation or trust land (delivery location and tribal affiliation matter)

• Purchases by foreign diplomats and consular staff using a tax exemption card issued by the US State Department

• Purchases by businesses buying for resale (requires a reseller permit)

What products and services are exempt from Washington sales tax?

Washington's retail sales tax applies to most tangible goods and digital products, but certain categories are exempt.

The following purchases are exempt:

• Groceries: Many unprepared grocery foods are exempt, though soft drinks, prepared foods sold ready to eat, and dietary supplements are all taxable even when they sit on the same shelf as an exempt item.

• Prescription drugs and medical equipment: Prescription drugs are exempt, as are certain durable medical equipment and prosthetic devices when purchased with a prescription.

• Agricultural inputs: Seed, fertiliser, agricultural chemicals, and feed for livestock raised for sale are exempt when tied to commercial production. For example, a tractor that a hobby farmer buys for a backyard garden doesn't qualify.

• Manufacturing machinery and equipment (M&E): The M&E exemption applies to qualifying equipment used directly in a manufacturing operation. It's claimed at the point of sale via an exemption certificate rather than through a pay-now, refund-later process.

• Newspapers: Physical newspapers are exempt, but digital-only news subscriptions can receive different treatment.

Services are generally exempt from retail sales tax unless they are explicitly named as taxable.

How do you use a Washington sales tax exemption certificate?

Washington splits exemption documentation into two categories. Knowing which applies helps sellers avoid overcollecting tax or under-documenting an exempt sale.

Reseller permits for resale purchases

For resale purchases, the buyer needs a reseller permit issued directly by the Washington Department of Revenue (DOR). A business applies to the DOR, and if approved, the state issues a permit number valid for four years for an established business or two years for a newly registered one. When a buyer intends to purchase for resale, they give the seller their permit number, and the seller can verify it's active using the DOR's online permit lookup before completing the sale tax-free.

Out-of-state businesses buying for resale have another option: the Streamlined Sales and Use Tax Agreement Certificate of Exemption, which, as a member state of the Streamlined Sales Tax Governing Board, Washington accepts. This lets a business registered in another member state skip applying for a separate Washington-specific permit for resale purchases. Sellers should still confirm the certificate is complete and states a clear exemption reason before treating the sale as tax-free.

Exemption certificates for other categories

Every other exemption category – agricultural inputs, M&E, non-profit fundraising events, and similar cases – uses a Buyer's Retail Sales Tax Exemption Certificate. The buyer states which statutory exemption applies and why. This form doesn't require pre-approval from the state the way a reseller permit does, but it does require accuracy since the seller is relying on it to justify not collecting tax.

What records do sellers need to keep for exemption certificates in Washington?

The DOR requires sellers to keep exemption documentation for five years. Keep the certificate or permit number itself, the date it was collected, and, for reseller permits, confirmation that it was active at the time of the sale. Tie each exempt sale to the specific certificate used so an auditor can trace the exemption back to its documentation instead of a general note that the customer was exempt. Watch reseller permit expiry dates since a permit that lapses mid-relationship needs a new number on file.

What happens if you accept an invalid exemption certificate?

If a certificate turns out to be invalid, incomplete, or fraudulent, the DOR can assess the seller for the uncollected tax, plus interest, back to the date of the transaction. Washington offers a good-faith standard that protects sellers who accepted a certificate reasonably: if it was fully filled out, the exemption claimed made sense for that type of buyer, and nothing about the transaction raised doubt, the seller generally isn't held liable even if the certificate later proves defective. That protection disappears if a certificate was missing information, the reseller permit number didn't match DOR records, or the exemption claimed didn't fit the item sold.

Verify reseller permits through the DOR's lookup tool before the sale, and review exemption certificates for completeness at the point of collection. Together, these steps can significantly reduce a seller's exposure during an audit.

What tools can help handle exemption certificate management?

Manually tracking permit numbers, expiry dates, and certificate types across every exempt customer gets harder as transaction volume grows. Stripe Tax lets businesses mark specific customers as tax-exempt and attach exemption details to their customer record, so the exemption applies automatically to future transactions instead of requiring a manual override every time. That's useful for businesses with recurring exempt buyers, such as a wholesale supplier selling to the same set of resellers every month, since the exemption doesn't need to be reapplied on each invoice. Stripe Tax also tracks sales by state and flags when a business is approaching Washington's economic nexus threshold.

How Stripe Tax can help

Stripe Tax reduces the complexity of tax compliance so you can focus on growing your business. Start collecting taxes globally by adding a single line of code to your existing integration, clicking a button in the Dashboard or using our powerful API.

Stripe Tax helps you monitor your obligations and alerts you when you exceed a tax registration threshold based on your Stripe transactions. It can also register to collect tax on your behalf in the US, automate US filings in the Dashboard, and manage global filings through trusted partners. Stripe Tax automatically calculates and collects sales tax, VAT, and GST on:

• Digital goods and services in all US states and over 100 countries

• Physical goods in all US states and 42 countries

Stripe Tax can help you:

• Understand where to register and collect taxes: See where you need to collect taxes based on your Stripe transactions. After you register, switch on tax collection in a new state or country in seconds. You can start collecting taxes by adding one line of code to your existing Stripe integration, or add tax collection with the click of a button in the Stripe Dashboard.

• Register to pay tax: If you need to register for sales tax in the US, let Stripe manage your tax registrations. You'll benefit from a simplified process that prefills application details – saving you time and simplifying compliance with local regulations. If you need help registering outside of the US, Stripe partners with Taxually to help you register with local tax authorities.

• Automatically collect tax: Stripe Tax calculates and collects the right amount of tax owed, no matter what or where you sell. It supports hundreds of products and services and is up-to-date on tax rules and rate changes.

• Simplify filing: Stripe Tax automates US filings in the Dashboard, powered by TaxJar. For global filings, Stripe Tax seamlessly integrates with filing partners, so your global filings are accurate and timely. Let our partners manage your filings so you can focus on growing your business.

Learn more about Stripe Tax or get started today.

FAQs about Washington sales tax exemptions