State of Ohio Sales Tax Exemption Form: Uses, Filing, and Recordkeeping

An Ohio sales tax exemption certificate is a form you fill out and give to your vendor to document why a purchase should not be taxed. Ohio publishes two versions through the Department of Taxation: the STEC-U for a single purchase and the STEC-B for ongoing purchases from the same vendor. The state also accepts the multi-state Streamlined Sales Tax (SST) certificate. You do not file the form with the state. The vendor keeps it in their records, and you, as the buyer, carry the legal responsibility for the exemption claim.¹

Which Form to Use

The choice comes down to whether this is a one-time purchase or the start of a buying relationship.

Use the STEC-U (Unit Exemption Certificate) for a single transaction with a vendor you don’t expect to buy from again soon. Use the STEC-B (Blanket Exemption Certificate) when you’ll be making repeated qualifying purchases from the same vendor. Once the vendor has your blanket certificate on file, you don’t need to hand over a new one with each order.¹

The Streamlined Sales Tax certificate is a third option. Ohio is a full member of the SST Agreement, so vendors here must accept it. It’s useful if you buy in multiple states, because one form lists each state and your ID number for it. If you don’t check the single-purchase box, the SST certificate works as a blanket certificate and stays valid as long as your purchases from that vendor are no more than 12 months apart.²

Both STEC forms are fillable PDFs on the Ohio Department of Taxation’s website.

Who Can Claim an Exemption

All sales in Ohio are presumed taxable until proven otherwise.³ To claim an exemption, your purchase has to fit a category laid out in ORC 5739.01 or 5739.02. The most common ones:

Purchases for Resale

Goods bought for resale in the same form you received them fall outside the sales tax entirely.⁴ You need an Ohio vendor’s license to claim this. The phrase “in the same form” matters: buying finished chairs to sell in your store is resale; buying lumber to build furniture is manufacturing.

Manufacturing

Businesses that transform raw materials into a different product for sale can buy production equipment and materials tax-free when those items are used directly in manufacturing. Qualifying purchases include production machinery, repair parts, catalysts, solvents, testing equipment, fuel or power for production equipment, and materials-handling equipment used within the operation.⁵

Farming and Agriculture

Equipment, supplies, and materials used primarily in farming, agriculture, horticulture, or floriculture qualify when the buyer produces goods for sale. Items used in conditioning or holding farm products are included. Property that becomes part of real estate, such as a permanent barn structure, does not qualify.⁵

Nonprofits and Charitable Organizations

Ohio exempts sales to churches, IRC 501(c)(3) organizations, and other nonprofits operated exclusively for charitable purposes as Ohio defines them.⁵ The 501(c)(3) letter alone isn’t enough. Some 501(c) organizations don’t qualify, and even qualifying ones lose the exemption on purchases used to run a trade or business rather than the charitable mission.⁶

Government Entities

The State of Ohio and its political subdivisions (counties, school districts, municipalities) are exempt on their purchases. In practice, vendors sometimes don’t require a certificate at all for government buyers.⁶

What Goes on the Form

All three certificates ask for similar information:

The vendor’s full legal name and address.
Your legal business name, address, and type of business.⁷
Your Ohio vendor’s license number, if you have one, or your federal EIN. On the SST form, list an ID number for each state where you’re claiming an exemption.
The specific statutory reason the purchase is exempt: resale, manufacturing, agriculture, nonprofit status, and so on. This is the most important field. The reason must match a recognized category, and the vendor relies on your accuracy.
Signature and date from an authorized representative of the buyer.⁷

Ohio accepts certificates electronically or in hard copy.³ An electronic signature works as long as the signer intended to sign, both parties consented to electronic business, and the system retains an accurate record of the signed document.

Construction Contractors Are Mostly Not Exempt

This is the most common misuse of the certificate, so it’s worth flagging even if you don’t work in construction. Ohio treats contractors as the final consumer of the building materials they buy, which means contractors generally owe sales tax on those materials even though the materials end up in someone else’s building.

Contractors can buy materials tax-free only when the materials will be incorporated into a narrow set of projects:

Buildings owned by or under contract with the federal government, the State of Ohio, or Ohio political subdivisions.
Structures used exclusively for charitable purposes by a qualifying nonprofit, or buildings used by 501(c)(3) organizations exclusively for their exempt purposes.
Churches and religious education buildings.
Horticulture and livestock structures for people in those businesses.⁸

A contractor building a commercial office or private home pays sales tax on the materials. Issuing an exemption certificate for materials used on an ineligible project is the kind of error that generates large audit assessments.

Getting the Certificate to the Vendor

The certificate does not go to the Ohio Department of Taxation. You give it directly to the vendor, and the vendor keeps it.³

Timing matters. If the vendor doesn’t have a certificate within 90 days of the sale, the law presumes the transaction is taxable. If the vendor later receives a notice of assessment from the tax commissioner, they still have 120 days to obtain a valid certificate in good faith or otherwise prove the sale was exempt.⁹ The practical rule: send the certificate to your vendor promptly, but a late one isn’t fatal.

How Long to Keep It

Both buyers and vendors should keep copies for at least four years. The certificate itself says the vendor is responsible for maintaining it for four years.¹⁰ That aligns with Ohio’s general records retention rules for tax documents.¹¹

Longer is safer. If the tax commissioner suspects fraud, there’s no time limit on assessments. And with a blanket certificate covering ongoing purchases, the four-year clock runs from the most recent transaction covered by the form, not from the date the form was signed.

What Goes Wrong When the Certificate Doesn’t

Ohio law protects vendors who accept a fully completed exemption certificate. If the exemption later turns out to be invalid, the vendor is off the hook, and the buyer who claimed it becomes liable for the unpaid tax.⁹ That protection has limits. It does not apply if the vendor fraudulently failed to collect tax, encouraged the buyer to claim a false exemption, or accepted a certificate for a category Ohio has clearly posted as unavailable.

If an audit finds a vendor made tax-free sales without a valid certificate, the vendor faces an assessment for the uncollected tax plus a penalty of up to 15% of the assessed amount, with interest running from the year after the tax was originally due. If the commissioner concludes the vendor actually collected the tax but kept it, the penalty rises to up to 50%.¹²

Presenting a false exemption certificate is illegal for the buyer.⁹ When an improperly claimed exemption is caught, the buyer owes the tax, and the same penalty percentages can apply to the buyer’s assessment.

Direct Pay Permits: The Alternative

Some Ohio businesses skip exemption certificates entirely with a direct pay permit from the tax commissioner. Permit holders buy from vendors without paying sales tax at the point of sale and remit whatever tax is owed directly to the state. The commissioner issues these permits when direct payment would improve compliance and administrative efficiency, which in practice means high-volume purchasers with complex buying patterns.¹³

If you hold a direct pay permit, you don’t issue exemption certificates. You give vendors your permit number and a notice that you’re paying tax directly to the state, which relieves them of collection duties on sales to you. If the permit is cancelled or surrendered, you must notify your vendors in writing before or at the time of your next purchase so they can start collecting tax again.¹³

1
Ohio Department of Taxation. Sales and Use – Exemption Certificates and Statements of Exempt Sales
2
Streamlined Sales Tax Governing Board. Streamlined Sales Tax Certificate of Exemption
3
Ohio Legislative Service Commission. Ohio Administrative Code 5703-9-03 – Sales and Use Tax; Exemption Certificate Forms
4
Ohio Legislative Service Commission. Ohio Code 5739.01 – Definitions
5
Ohio Legislative Service Commission. Ohio Code 5739.02 – Levy of Sales Tax – Purpose – Rate – Exemptions
6
Ohio Department of Taxation. Non-Profit Tax Issues
7
Ohio Department of Taxation. Ohio Sales and Use Tax Blanket Exemption Certificate
8
Legal Information Institute. Ohio Admin Code 5703-9-14 – Sales and Use Tax
9
Ohio Legislative Service Commission. Ohio Code Chapter 5739 – Section 5739.03
10
Ohio Department of Taxation. Ohio Sales and Use Tax Blanket Exemption Certificate
11
Ohio Legislative Service Commission. Ohio Administrative Code 5703-29-18 – Records Retention Requirements
12
Ohio Legislative Service Commission. Ohio Code 5739.133 – Penalty
13
Ohio Legislative Service Commission. Ohio Code 5739.031 – Direct Payment Permits