Ohio Sales Tax for Contractors: Who Pays on Materials and Labor

Short answer: In Ohio, a construction contractor is the consumer of the materials it permanently incorporates into real property. Under Ohio Administrative Code Rule 5703-9-14 you pay sales or use tax when you buy those materials, and you do not charge your customer sales tax on the construction contract — labor included. The exception is Ohio’s enumerated taxable services, such as building maintenance and janitorial service, which do require a vendor’s license and tax collection.

The confusing part is that Ohio does not decide this by asking whether you sold a service. It decides it by asking what happened to the material. If the material became part of the building, you are the end of the tax chain and you already paid. If it stayed a separate item, or if what you sold appears on Ohio’s list of taxable services, you are a retailer and you collect. Getting that line wrong means either eating tax you should have charged or charging tax you should not have. The rules sit with the Ohio Department of Taxation, and federal reporting runs separately through the IRS. Which registrations you hold depends on your trade and jurisdiction, covered in Ohio contractor license requirements.

Do Ohio contractors charge sales tax on labor?

Not on a construction contract. When you install materials so they become part of a building or structure on real property, you do not add Ohio sales tax to the invoice. Not to the labor, not to the materials, not to the total.

This surprises contractors who moved from a state that taxes construction labor. In Ohio the tax already happened upstream, when you bought the materials at the supply house.

The practical consequence is that your material cost is your material cost including tax. Bid off a pre-tax price list and you underbid every job by the tax rate — the state rate plus the county and transit authority permissive rate for the county where the material is used, which varies across Ohio.

What does “the contractor is the consumer” actually mean?

Rule 5703-9-14 of the Ohio Administrative Code sets it out: a construction contractor who buys materials or taxable services to incorporate into real property is the consumer of them and owes sales or use tax on the purchase price. Three details follow, and all three catch people out:

• A subcontractor doing the physical labor does not change it. You are still the consumer of the materials you purchase, even where someone else installs them.
• You cannot buy construction contract materials on a resale certificate. You are not reselling them. You are consuming them.
• Your tools, equipment, and consumables are taxable to you based on their primary use, whatever the property owner’s status. A tax-exempt customer does not make your saw blades exempt.

If an out-of-state supplier does not charge Ohio tax, the liability becomes Ohio use tax and you owe it directly. Online material orders are where small contractors quietly accumulate an unpaid use tax balance.

When is a job not a construction contract?

This is Ohio’s sharpest distinction. Ohio law separates items that become part of the real property from business fixtures — items permanently attached to land or a building that primarily benefit the business conducted on the premises rather than the realty itself, a concept defined in Ohio Revised Code Chapter 5701. The tax treatment flips:

What you installed	Your tax position	Customer’s invoice
Material incorporated into real property	You are the consumer; you paid at purchase	No sales tax charged
Business fixture or item that stays tangible personal property	You are a retailer; you buy for resale	Sales tax charged on the sale

Sell and install something that keeps its character as personal property or qualifies as a business fixture, and you have made a retail sale: vendor’s license, tax collected, returns filed. Contractors doing mixed residential and commercial work cross this line without registering more often than they realize — commercial refrigeration, equipment installs, and specialty machinery are where it happens.

Which contractor-adjacent services are taxable in Ohio?

Ohio taxes an enumerated list of services in Ohio Revised Code Chapter 5739, and two on it are ones contractors drift into as side work:

• Building maintenance and janitorial service — cleaning the interior or exterior of a building and the tangible property in or on it, plus incidental services where no separate charge is made. A de minimis exclusion applies to a person whose annual sales of this service are very small; the dollar figure is set in section 5739.01 and is deliberately not reproduced here — read the 2026 text of that section before you rely on the exclusion.
• Landscaping and lawn care service — also enumerated, which catches contractors who add grounds work.

Construction cleanup performed as part of the construction process is treated as construction labor, not building maintenance. But a standalone contract to clean an office monthly is a different activity with different obligations, and being a licensed tradesperson the rest of the week does not exempt it. The full list in section 5739.01 is longer than most contractors expect — read it before adding a service line.

When do you need an Ohio vendor’s license?

You need one when you make taxable retail sales in Ohio — selling tangible personal property at retail, or providing one of the enumerated taxable services. A contractor doing nothing but construction contracts generally does not need a vendor’s license, because there is nothing to collect.

Selling appliances over the counter, installing business fixtures, or taking janitorial contracts changes that. Registration runs through the Ohio Department of Taxation and the Ohio Business Gateway, and a regular vendor’s license is tied to a fixed place of business in a county — so ask which license type fits if you work across several counties. Register before the first taxable sale.

What about jobs where the finished building is exempt?

Ohio provides a construction contract exemption certificate where the completed structure will be used in a way the law exempts — certain government, church, or qualifying facility work. The customer or general contractor issues it to you, relieving you of tax on that contract’s materials.

Two rules follow. The certificate must be properly completed and in your hands, because a verbal assurance that “they’re a nonprofit” is worth nothing at audit. And it covers incorporated materials only, not your tools and equipment, which stay taxable to you by primary use.

How should this show up on the invoice?

For a plain construction contract, it should not show up at all — no tax line, no separate tax calculation. The temptation to add “sales tax” as a visible line to explain your material markup is a mistake: it looks like collected tax you never remitted.

Itemize labor and materials descriptively instead. Where you are making a taxable sale, the tax is a real, separately stated line at the rate for the correct county. Knowing when a document is an invoice versus a receipt matters here, because your supplier receipts are the evidence that tax was already paid.

What records does this actually require you to keep?

Ohio puts the burden on your purchase side rather than your sales side. What proves you handled it correctly is a complete run of supplier receipts showing Ohio tax paid, matched to jobs, plus exemption certificates and any use tax you self-assessed. Missing supplier receipts are the expensive failure mode — see how long to keep tax records and organizing contractor receipts.

Keel handles that side on iOS, entirely on device. No account, no bank connection, no cloud — the App Store privacy label reads “Data Not Collected.” Receipts are read on-device with Apple Intelligence, so the supply house slip becomes a searchable record instead of a faded slip in the truck. Invoices go out as PDFs with your own numbering, logo, and a payment link QR. Mileage is logged, reports summarize the year, the Accountant Pack bundles it, and the whole year exports as one file from an append-only, hash-chained ledger.

Keel does not calculate Ohio sales tax, file returns, or tell you whether a job is a construction contract. It is a record keeper, and what it gives you is a dated, tamper-evident set of purchase and sales records you cannot reconstruct after the fact. Free is $0 with unlimited invoices, receipts, and mileage. Keel Pro is a one-time $249.99 Lifetime purchase.

Frequently asked questions

Do I charge my customer sales tax on a kitchen remodel in Ohio?

No, not on the construction contract. Cabinets, tile, and fixtures installed so they become part of the real property are materials you consumed, and you paid Ohio sales tax when you bought them. The homeowner’s invoice carries no tax line. Build the tax you paid into your material pricing instead, or you are absorbing it.

Can I buy materials tax-free with a resale certificate in Ohio?

Not for construction contracts. Ohio treats you as the consumer of materials incorporated into real property, so there is no resale to claim. A resale certificate applies only where you genuinely resell the item — selling tangible personal property at retail, or installing something that remains personal property or qualifies as a business fixture.

What if I buy materials online from another state?

You still owe Ohio tax. If the seller does not charge Ohio sales tax, the liability becomes Ohio use tax and you remit it yourself at the rate for the county where the material is used. This is one of the most commonly missed obligations for small contractors, and unpaid use tax accumulates quietly until an audit finds it.

Is lawn care taxable if I add it as a side service?

Landscaping and lawn care service is an enumerated taxable service in Ohio, so adding grounds work changes your obligations. The full list of taxable services is in Ohio Revised Code section 5739.01 — check your exact activity against it before you sell it, because the answer varies by how the service is defined rather than by what you call it.

Do I need a vendor’s license if I only do construction contracts?

Generally no. With nothing taxable to collect, there is nothing to register for on the sales side. You still owe tax on your own material purchases. The moment you sell an appliance over the counter, install a business fixture, or take a janitorial or landscaping contract, you need to register before that first taxable sale.

How do I handle a tax-exempt customer like a church or school?

Get the properly completed construction contract exemption certificate in writing before you buy materials for that job, and file it against that specific job. It relieves tax on the incorporated materials only — your tools, equipment, and consumables stay taxable to you regardless of who the customer is.

---

This article is general information, not legal or tax advice. Rules change — confirm with the authority named above.