Ohio’s 2026 Flat Income Tax: What Changed for Small Business Owners

• Sep 28, 2026

For tax years beginning in 2026, Ohio taxes an individual’s nonbusiness income above $26,050 at $332 plus 2.75% of the excess. That’s different from 2025, when the top rate was 3.125%. Ohio’s business income deduction and separate 3% tax on qualifying business income remain important for small-business owners.

If you own an LLC, receive S corporation income, or earn wages while running a side business, the distinction matters. Ohio’s new rate does not mean every dollar on your tax return is taxed at 2.75%.

How Did Ohio’s Income Tax Change From 2025 to 2026?

Ohio moved from a two-rate structure for taxable income above the exemption level in 2025 to a single 2.75% marginal rate for nonbusiness income above the statutory threshold in 2026. Ohio Revised Code Section 5747.02 sets the calculation. The change primarily affects nonbusiness income rather than eliminating the separate treatment of qualifying business income.

Source: Ohio Revised Code 5747.02 and Ohio Legislative Service Commission analysis of House Bill 96. Confirm historical calculations against the applicable statutory versions before publication.

The $332 base amount matters. Calculating 2.75% of all income above $26,050 without the statutory base amount may produce an incorrect estimate.

What Counts as Nonbusiness Income in Ohio?

Nonbusiness income is income that does not qualify for Ohio’s separate business-income treatment. It can include wages, certain investment income, and other taxable income, depending on applicable definitions and adjustments.

Consider someone who works full-time and operates a consulting business on the side. Wages generally enter the nonbusiness-income calculation. Eligible consulting profit may qualify for Ohio’s business income deduction. Those amounts can appear on the same individual return without receiving identical tax treatment.

The distinction also applies to partnership and S corporation owners. A Schedule K-1 reports income flowing to an owner, but its Ohio tax treatment depends on the underlying activity and applicable rules.

Does an LLC Automatically Qualify for Ohio’s Business Income Deduction?

No. An LLC can have different federal tax classifications, and forming one doesn’t automatically make every dollar received qualifying business income. Start with the character of the income, not the entity name.

How Does Ohio’s $250,000 Business Income Deduction Work in 2026?

Ohio generally allows eligible individual taxpayers to deduct up to $250,000 of qualifying business income. For married taxpayers filing separately, the limit is generally $125,000. Qualifying business income above the deduction amount is subject to a separate 3% tax under the Ohio framework described in the legislative sources.

For example, assume an eligible owner has $180,000 in qualifying business income and meets all deduction requirements. That amount may be covered by the deduction. If another eligible owner has $310,000, the remaining $60,000 after a full $250,000 deduction may be subject to the separate 3% rate. These are simplified hypothetical examples, not final tax calculations.

Is the Business Income Deduction the Same as a Federal Deduction?

No. Ohio’s business income deduction is a state provision. The federal qualified business income deduction has different eligibility rules and calculations. An owner may qualify for one, both, or neither.

Practitioner note: Identify the portion of income eligible for business-income treatment before applying the nonbusiness tax rate. Starting with a blended income figure can distort the estimate.

Does Ohio’s New Flat Tax Apply to S Corporation and Partnership Income?

Qualifying pass-through business income may remain eligible for Ohio’s business-income deduction and separate 3% tax treatment. The new nonbusiness-income rate does not automatically replace those rules.

An S corporation shareholder may receive both wages and an allocation of business income. Wages and allocated income should be reviewed separately, along with any distributions. For owners of several businesses, the calculation may require information from more than one entity.

At Deifendeifer Accounting & Tax Service in Lima, Ohio, a useful review starts with the owner’s complete income picture. Learn about our Small Business Services, including tax strategy, entity analysis, and financial statement review.

What Did Not Change Under Ohio’s 2026 Income Tax Law?

Ohio’s individual income tax rate change did not eliminate municipal income taxes, federal income taxes, or the Commercial Activity Tax. Each operates under separate rules.

Municipal Income Taxes Remain Separate

Lima municipal income tax is distinct from Ohio individual income tax. A lower state rate doesn’t automatically reduce a city-level obligation. Owners should check where they live, work, and operate, particularly when activities involve more than one municipality.

Federal Income Tax Rules Still Apply

Ohio’s rate change does not alter federal income tax brackets, federal self-employment tax, or federal estimated-payment obligations. State adjustments and classifications must be evaluated separately.

Commercial Activity Tax Is a Different Tax

Ohio CAT follows a separate framework involving taxable gross receipts rather than individual taxable income. Check the Ohio Department of Taxation for applicable rules and thresholds.

Practitioner note: Do not reduce every business tax payment merely because the state individual rate fell. First identify which tax is involved and which income or receipts it applies to.

How Does Ohio’s 2026 Tax Change Affect Estimated Payments?

Taxpayers making Ohio estimated income tax payments should recalculate projections under the applicable 2026 law, rather than carry forward only a prior-year tax calculation. This matters particularly for owners with pass-through income or income not covered by withholding.

What if the Ohio Estimated-Tax Worksheet Still Shows 2025 Rates?

Use the applicable 2026 statute as the controlling reference and check the latest Ohio Department of Taxation guidance. If a worksheet appears inconsistent with the enacted law, confirm the correct treatment before filing.

What Should You Review Before Changing an Estimated Payment?

1. Estimate 2026 wages, business income, and other taxable income.
2. Identify income potentially eligible for the Ohio business income deduction.
3. Apply relevant Ohio calculations and adjustments.
4. Subtract withholding, credits, and payments already made.
5. Check applicable estimated-payment and underpayment rules.

For owners combining personal wages and business income, our Personal Tax Services page explains the firm’s individual tax preparation and planning support.

What Should Lima Small Business Owners Do Before Filing Their 2026 Ohio Taxes?

Lima owners should separate federal, Ohio, and municipal tax responsibilities, then review how wages and qualifying business income are reported. Start with your most recent return, year-to-date statements, payroll records, and pass-through income documents.

Before filing, verify business income classification and any municipal or CAT obligations. For links to tax agencies, withholding information, and forms, see our Additional Resources page, which links to the Ohio Department of Taxation.

Frequently Asked Questions

Is Ohio’s income tax rate 2.75% for everyone in 2026?

No. Ohio’s 2026 statutory nonbusiness-income formula includes a $332 base amount plus 2.75% of income above $26,050. Qualifying business income has separate rules, including a deduction and a 3% rate on remaining taxable business income. Final liability depends on the taxpayer’s facts.

Did Ohio eliminate the $250,000 business income deduction?

No. The supplied legislative brief indicates Ohio retained the deduction for eligible taxpayers. It generally covers up to $250,000 of qualifying business income, subject to eligibility and filing-status rules. The change in the nonbusiness-income rate should not be confused with removing the separate business-income treatment.

Do S corporation distributions qualify for Ohio’s business income deduction?

The answer depends on the character of the income and Ohio’s applicable rules. Allocated business income and cash distributions are not necessarily the same amount. Review the K-1, wages, distributions, and underlying activity before determining the deduction. A distribution alone does not establish eligibility.

Does the Ohio flat tax change Lima city income tax?

No. Lima municipal income tax is separate from Ohio individual income tax. The state’s 2026 rate change does not automatically change city requirements. Owners should review municipal obligations independently, especially where employees work in different locations or business activity spans multiple municipalities.

Should I reduce my Ohio estimated tax payments for 2026?

Not automatically. A lower rate on some nonbusiness income may reduce projected liability, but the correct payment depends on total income, business-income classification, withholding, credits, and earlier payments. Recalculate under 2026 law and current Department of Taxation guidance before changing estimates.

Is Ohio’s business income deduction the same as the federal QBI deduction?

No. Ohio’s business income deduction is a state tax provision, while the federal qualified business income deduction follows federal law. The two have different eligibility requirements and calculations. Evaluate each separately rather than assuming eligibility for one means eligibility for the other.

Recalculate Your 2026 Ohio Estimated Taxes

Ohio’s 2026 income tax change may affect your estimated payments, especially if you have wages and pass-through income. Deifendeifer Accounting & Tax Service in Lima can review income classification, the business income deduction, and estimated-tax calculations. Contact Deifendeifer Accounting & Tax Service to request a tax-planning review.