Ohio Construction Sales Tax Exemptions

Ohio's sales tax rules for construction projects create significant classification challenges for contractors, subcontractors, and property owners. This page covers the statutory framework governing which materials, services, and transactions qualify for exemption under Ohio Revised Code Chapter 5739, how exemptions are claimed, and where the most consequential boundary lines fall. Understanding these distinctions affects project cost accounting, contract structuring, and tax compliance obligations across both commercial and residential work.

Definition and scope

Ohio imposes a state sales and use tax rate of 5.75% (Ohio Department of Taxation, ORC §5739.02) on tangible personal property and certain services sold in the state. County and transit authority permissive rates add between 0.25% and 2.25%, bringing combined rates in most Ohio counties to between 6.5% and 8%, depending on the county.

Construction-related exemptions exist within this framework, but they are narrow and contingent. The Ohio Department of Taxation administers these provisions. Exemptions do not apply automatically — the contractor or purchaser must affirmatively claim them using the correct exemption certificate (Form STEC B or STEC U, as applicable), and the burden of proof rests with the claimant.

Scope and coverage limitations: This page addresses Ohio state and county sales and use tax law as administered by the Ohio Department of Taxation. It does not address federal tax treatment, income tax, commercial activity tax (CAT), or municipal income tax obligations. It does not cover construction activity in states other than Ohio. Questions about specific transactions, audit exposure, or multi-state sourcing fall outside the scope of this reference. For a broader regulatory context, see Ohio Commercial Construction Regulations and Ohio Construction Tax Considerations.

How it works

Ohio sales tax applies to the sale of tangible personal property, which includes building materials and supplies. The key structural distinction is between a contractor and a vendor:

Contractor classification: Under Ohio law, a construction contractor is generally treated as the end consumer of materials incorporated into real property. The contractor pays sales tax when purchasing materials and does not charge sales tax to the property owner on those materials — the contract price for labor and materials is not itself subject to sales tax.
Material incorporation test: Materials that become permanently affixed to or incorporated into real property are taxed at the point of purchase by the contractor, not at the point of sale to the owner.
Exemption certificate filing: When an exemption applies, the purchasing party must present a completed Ohio Department of Taxation exemption certificate to the seller before or at the time of purchase. Retroactive exemption claims are subject to scrutiny during audits.
Use tax obligation: If a contractor purchases materials outside Ohio for use in an Ohio construction project and sales tax was not collected by the out-of-state vendor, Ohio use tax (at the same rate as sales tax) is owed and reported on the Ohio Universal Sales Tax Return.

The Ohio Department of Taxation publishes Information Release ST 2003-03, which governs contractor taxation, and the Ohio Tax Commissioner's rules under OAC Chapter 5703-9 provide regulatory detail on exemption procedures.

Common scenarios

Exempt transactions in Ohio construction:

Government contractor exemption: Materials purchased by a contractor for incorporation into a project owned by an exempt government entity (state of Ohio, political subdivisions, public school districts) may qualify for exemption. The government entity must issue its own exemption certificate; the contractor cannot self-certify.
Nonprofit and religious organizations: Qualifying nonprofit organizations holding a valid Ohio exemption certificate can extend that exemption to contractors purchasing materials solely for their project. The organization's exempt status does not automatically pass through — proper documentation is required for each purchase.
Manufacturing and agricultural production: Materials incorporated into structures used directly in manufacturing or agricultural production operations may qualify under ORC §5739.02(B)(42). This is a fact-specific determination tied to the primary use of the completed structure.
Interstate commerce and resale: Materials purchased for resale (e.g., by a material supplier to a contractor) are exempt at the wholesale level under the resale exemption, provided the buyer holds an active Ohio vendor's license.

Taxable transactions often misclassified as exempt:

Repair and maintenance materials do not qualify under the incorporation test — if materials restore rather than improve real property, tax applies.
Equipment rented or leased for use on a job site (cranes, lifts, generators) is subject to tax on rental receipts unless a specific exemption applies.
Tools and consumables (drill bits, saw blades, fuel, safety equipment) are taxable regardless of project type.

For additional context on how project type affects compliance, see Ohio Residential Construction Regulations and Ohio Construction Permits Overview.

Decision boundaries

The most consequential boundary in Ohio construction sales tax is real property vs. tangible personal property. An item that becomes real property upon installation is taxed to the contractor at purchase. An item that remains tangible personal property (removable equipment, trade fixtures with identifiable personal property character) may be taxed at the point of sale to the owner.

A second critical boundary is new construction vs. repair/maintenance. New construction and capital improvements incorporate materials tax-free at the contractor level (tax paid upstream). Repair jobs, by contrast, trigger tax on both materials and, in some cases, the service charge — this is a recurring audit issue identified by the Ohio Department of Taxation.

A third boundary is public vs. private ownership. The government-contractor exemption applies only when the contracting entity is a qualifying government body and proper documentation flows through the transaction. Private developers do not qualify even when building infrastructure that will eventually transfer to public ownership.

Contractors operating across Ohio construction licensing requirements categories — general, electrical, plumbing, HVAC — each face the same underlying tax framework, though the nature of incorporated materials and fixture classification varies by trade.

References

Explore This Site

Regulations & Safety Regulatory References Tools & Calculators Board Footage Calculator