Can an Ohio LLC be taxed as an S corporation?

Yes. An Ohio LLC can elect S corporation treatment by filing IRS Form 2553. This can reduce self-employment tax on part of the profit, but it adds a payroll and Form 1120-S filing requirement. Evaluate it once profits are consistent.

Ohio LLC Tax Filing: Guide & Deadlines (2026)

Q: How is an Ohio LLC taxed?

By default, a single-member Ohio LLC is a disregarded entity and a multi-member LLC is a partnership for federal and Ohio tax. The LLC itself pays no income tax; profit passes through to the members, who report it on their personal Ohio IT 1040 returns.

Q: Does an Ohio LLC pay state income tax?

The LLC does not pay a separate state income tax by default. The members pay Ohio individual income tax on their share of profit. Ohio's Business Income Deduction exempts the first $250,000 of business income, with a flat 3% rate on business income above that.

Q: When are Ohio LLC taxes due?

The Ohio individual income tax return (IT 1040) is due April 15, matching the federal deadline. Multi-member LLCs also file a federal partnership return (Form 1065) by March 15, and members may owe quarterly estimated payments.

Q: What is the Ohio Commercial Activity Tax?

The Commercial Activity Tax (CAT) is a gross-receipts tax on business activity in Ohio. For 2025 and later, only businesses with more than $6 million in taxable gross receipts owe the CAT, so most small LLCs are excluded and do not need to register.

Fact-checked by the LegalGlass editorial team against primary sources · Published Aug 6, 2026 · Last updated Aug 6, 2026

By default, an Ohio LLC is not taxed as a separate entity: a single-member LLC is disregarded and a multi-member LLC is taxed as a partnership. Profit passes through to the members, who report it on their Ohio individual income tax return (IT 1040), due April 15. Ohio's Business Income Deduction exempts the first $250,000 of business income, and the Commercial Activity Tax applies only to businesses with more than $6 million in taxable gross receipts.

Quick Answer

Default federal tax: Disregarded (1 member) or partnership (2+ members)
Ohio entity income tax: None by default - income passes to members
Members' return: Ohio IT 1040, due April 15
Business Income Deduction: First $250,000 exempt; 3% flat rate above
Commercial Activity Tax: Only receipts over $6 million (2025+)
Sales tax: 5.75% state + local, via vendor's license

How an Ohio LLC Is Taxed by Default

An LLC is not a federal tax classification, so the IRS applies default rules. A single-member LLC is a disregarded entity: its income and expenses are reported on the owner's personal return, usually on Schedule C. A multi-member LLC is taxed as a partnership and files Form 1065, issuing a Schedule K-1 to each member. In both cases, the LLC itself pays no federal income tax - profit "passes through" to the owners. Ohio follows this federal classification, so the LLC generally pays no separate Ohio entity income tax either.

This pass-through treatment is the starting point for Ohio LLC tax filing. What you actually owe Ohio depends on your members' individual returns, the Business Income Deduction, and whether your gross receipts reach the Commercial Activity Tax threshold. For the federal side, see the IRS LLC guidance and the check-the-box entity classification rules, and our national business tax filing guide.

Ohio Individual Income Tax on LLC Profit

Because the LLC is pass-through, each member reports their share of the LLC's profit on the Ohio individual income tax return, Form IT 1040, administered by the Ohio Department of Taxation. This return is due April 15, matching the federal individual deadline. Ohio residents report all their income; nonresidents report income sourced to Ohio.

Ohio taxes business income differently from other income through the Business Income Deduction (BID). A taxpayer may deduct up to $250,000 of business income ($125,000 if married filing separately), and business income above that deduction is taxed at a flat 3% rate rather than the graduated non-business rates. For many small LLC owners, the BID means a large portion of pass-through profit is effectively exempt from Ohio income tax. Confirm current figures on the Department of Taxation's Business Income Deduction page.

The Ohio Business Income Deduction in Practice

The Business Income Deduction is Ohio's signature small-business tax break, and it flows directly from LLC pass-through income. Suppose a single-member LLC nets $180,000 in business income. Because that is below the $250,000 deduction cap, the entire amount can qualify for the BID, substantially reducing the Ohio income tax owed on it. If the LLC nets $400,000, roughly the first $250,000 is deducted and the remaining business income is taxed at the flat 3% business rate.

The deduction is claimed on the Ohio return using the business income schedule that accompanies the IT 1040. It applies per taxpayer, not per business, so an owner with multiple pass-through businesses shares one $250,000 cap. Because the interaction of the BID with the flat rate and with federal self-employment tax can be nuanced, many owners model it with the SE tax calculator and confirm with a tax professional.

Ohio Commercial Activity Tax (CAT)

Separate from income tax, Ohio imposes the Commercial Activity Tax (CAT), a gross-receipts tax on the privilege of doing business in Ohio, under Ohio Revised Code Chapter 5751. The CAT is based on taxable gross receipts, not profit. Ohio raised the exclusion sharply in recent years: for 2025 and later, only businesses with more than $6 million in taxable gross receipts are subject to the CAT. Businesses at or below that threshold owe no CAT and are no longer required to register or file.

For businesses above the threshold, the CAT applies at a rate of 0.26% on taxable gross receipts above the exclusion, filed quarterly with the Department of Taxation. Because the threshold is high, the CAT affects only larger LLCs; most small Ohio LLCs never touch it. See the dedicated Ohio Commercial Activity Tax guide for registration, sourcing, and filing detail.

Sales and Use Tax

If your Ohio LLC sells taxable goods or certain services, you must collect and remit sales tax. The state rate is 5.75%, with counties and transit authorities adding local rates, so your combined rate depends on the sale location. To collect sales tax you first obtain a vendor's license for $25, then file sales tax returns through the Ohio Business Gateway on the schedule the Department assigns.

Sales tax is a trust tax - you collect it from customers and hold it for the state - so filing on time matters even in months with no sales. Service-only businesses whose services are not taxable may not need a vendor's license at all. For the licensing side, see business license in Ohio.

Pass-Through Entity Tax Election

Ohio offers an elective pass-through entity (PTE) tax that lets a qualifying LLC or partnership pay Ohio tax at the entity level, filed on Form IT 4738. The election is designed as a workaround to the federal $10,000 cap on the state-and-local tax deduction: the entity deducts the Ohio tax it pays federally, and members receive a corresponding Ohio credit. The entity-level rate for the elective PTE tax is 3%.

The PTE election is optional and mainly benefits owners with substantial pass-through income who itemize federally. It adds an entity-level Ohio filing (IT 4738) that would not otherwise exist for a default pass-through LLC. Whether it helps depends on each member's federal situation, so model it before electing.

Electing S Corporation Treatment

An Ohio LLC can elect to be taxed as an S corporation by filing IRS Form 2553. Under an S election, the owner-operator takes a reasonable salary subject to payroll taxes, and remaining profit is distributed without self-employment tax. The LLC then files a federal Form 1120-S and issues K-1s. This can save on self-employment tax once profits are consistently high enough to justify payroll and the added filings.

The trade-off is complexity: running payroll, filing an 1120-S, and meeting the reasonable-salary rule. For low-profit LLCs, the default pass-through treatment is usually simpler and cheaper. Compare the options in LLC or S corp and LLC vs. S corp tax before electing.

Key Ohio and Federal Tax Deadlines

The table summarizes the main filings a typical Ohio LLC faces. Actual deadlines shift to the next business day when they fall on a weekend or holiday. Confirm current dates each year with the IRS and Ohio Department of Taxation.

Filing	Who	Typical due date
Federal partnership return (Form 1065)	Multi-member LLC	March 15
Federal S-corp return (Form 1120-S)	LLC with S election	March 15
Ohio individual return (IT 1040)	Members	April 15
Federal individual return (Form 1040 / Schedule C)	Single-member LLC owner	April 15
Ohio PTE tax return (IT 4738)	Electing PTE	April 15
Commercial Activity Tax	Receipts over $6M	Quarterly
Sales tax returns	Vendors	Monthly / as assigned

Members who expect to owe $500 or more generally make quarterly estimated tax payments to both the IRS and Ohio.

Frequently Asked Questions

How is an Ohio LLC taxed?

By default a single-member LLC is disregarded and a multi-member LLC is a partnership. The LLC pays no income tax itself; profit passes through to members, who report it on their Ohio IT 1040.

Does an Ohio LLC pay state income tax?

Not as a separate entity by default. Members pay Ohio individual income tax on their share. The Business Income Deduction exempts the first $250,000 of business income, with a flat 3% rate above.

When are Ohio LLC taxes due?

The Ohio IT 1040 is due April 15. Multi-member LLCs file a federal Form 1065 by March 15, and members may owe quarterly estimated payments.

What is the Ohio Commercial Activity Tax?

A gross-receipts tax on Ohio business activity. For 2025 and later, only businesses with more than $6 million in taxable gross receipts owe the CAT, so most small LLCs are excluded.

Can an Ohio LLC be taxed as an S corp?

Yes, by filing IRS Form 2553. It can reduce self-employment tax on part of the profit but adds payroll and a Form 1120-S filing. Evaluate it once profits are consistent.

Sources

Ohio Department of Taxation - Business Income Deduction ($250,000 cap; 3% flat rate).
Ohio Department of Taxation - Commercial Activity Tax ($6M exclusion 2025+; 0.26% rate).
Ohio Department of Taxation - Individual Income Tax (IT 1040).
Ohio Department of Taxation - Pass-Through Entity Tax (IT 4738).
Ohio Department of Taxation - Sales & Use Tax (5.75% state rate).
Ohio Revised Code - Chapter 5751, Commercial Activity Tax.
Ohio Revised Code - Section 5747.01, Income Tax Definitions (business income).
Ohio Revised Code - Chapter 5747, Income Tax.
IRS - Limited Liability Company (LLC) (default classification).
IRS - About Form 1065, Partnership Return.
IRS - About Form 2553, S Corporation Election.
IRS - Self-Employment Tax.
Cornell LII - 26 CFR 301.7701-3, Entity Classification.
Cornell LII - 26 U.S.C. 1361, S Corporation Defined.

LegalGlass provides general information for educational purposes and is not a law firm or a substitute for advice from a licensed attorney or tax professional. Tax rates, thresholds, and deadlines change; verify current rules with the IRS and the Ohio Department of Taxation before acting.