Ohio’s flat income tax applies a single 2.75% rate to individual nonbusiness income above $26,050 for tax years beginning in 2026. If your Ohio taxable income lands at or below that threshold, you owe the state nothing. The rate is genuinely flat at the state level, but most Ohioans also pay a municipal income tax where they live or work, and many pay a school district income tax on top of that, so the total you hand over depends heavily on your address.
The 2026 Rate and How the Math Works
Once your Ohio taxable income after exemptions crosses $26,050, your state tax is $332 plus 2.75% of every dollar above that line.1Ohio Legislative Service Commission. Ohio Revised Code 5747.02 – Tax Rates The $332 is a fixed base amount that kicks in the moment you cross the threshold; the 2.75% applies only to the excess.
A worked example makes it concrete. If your Ohio taxable nonbusiness income is $50,000, you owe $332 plus 2.75% of $23,950, which comes to roughly $991. That is an effective state rate below 2% on the full amount, well under what Ohio’s old graduated system would have produced.
Who Has to File
Ohio expects an IT 1040 from anyone who lived in the state for any part of the year or earned Ohio-source income, including wages, lottery or casino winnings, rental income from Ohio property, and income from a business operating in Ohio.2Ohio Department of Taxation. Who Must File Taxes in Ohio You also have to file if you owe school district income tax, even if your state tax comes out to zero.
The Department of Taxation recommends filing if your federal adjusted gross income exceeds $28,450, even when you expect to owe nothing, so you don’t get a delinquency notice.2Ohio Department of Taxation. Who Must File Taxes in Ohio Don’t confuse the two numbers. The $26,050 figure is Ohio taxable income after adjustments and exemptions. The $28,450 is federal AGI, which almost always runs higher because Ohio subtracts exemptions and certain deductions before applying the rate.
Personal Exemptions That Lower What You Owe
Ohio gives you a personal exemption for yourself, your spouse, and each dependent, and the amount depends on your modified AGI. For 2026, the per-person exemption is:
- $2,350 if your modified AGI is $40,000 or less
- $2,100 if your modified AGI is between $40,001 and $80,000
- $1,850 if your modified AGI exceeds $80,000
Exemptions come off your income before the 2.75% rate applies, so they shrink the taxable base rather than giving you a dollar-for-dollar credit. A married couple with two children and $75,000 in modified AGI would subtract $8,400 (four exemptions at $2,100 each) before running the calculation.3Ohio Legislative Service Commission. Ohio Revised Code 5747.025 – Personal Exemptions
There is a hard cliff at the top. If your modified AGI reaches $500,000 or more in 2026, you lose all personal exemptions.3Ohio Legislative Service Commission. Ohio Revised Code 5747.025 – Personal Exemptions The exemption amounts are adjusted annually using the GDP deflator, so expect small shifts in later years.
Business Income Gets Its Own Treatment
If you have business income, the 2.75% rate is not the whole story. The first $250,000 of qualifying business income is fully deductible from your Ohio tax base when you file as single or married filing jointly, and $125,000 if you file married filing separately.4Ohio Department of Taxation. Business Income and the Business Income Deduction Anything above those limits is taxed at a flat 3%, which runs independently of the 2.75% rate on nonbusiness income.5Ohio Department of Taxation. Business Income Deduction
Only income from a sole proprietorship or pass-through entity qualifies, meaning partnerships, S corporations, and LLCs.5Ohio Department of Taxation. Business Income Deduction A salary you pay yourself from a C corporation does not qualify, because C corporation income is taxed at the entity level and does not pass through to your personal return. The practical result for most small business owners: the first $250,000 of profit is state-tax-free, and everything above it is a predictable 3%.
Credits That Can Reduce the Bill
Joint Filing Credit
Married couples who file jointly and each earn at least $500 in qualifying income (wages, salaries, and similar earned income, not interest, dividends, capital gains, or rental income) can claim the joint filing credit.6Ohio Department of Taxation. Joint Filing Credit The credit is a percentage of your calculated state tax, with the percentage dropping as income rises, and it disappears entirely once modified AGI hits $500,000.
Retirement Income Credit
If you receive pension or retirement plan distributions and your modified AGI minus exemptions stays below $100,000, you can claim up to $200 as a retirement income credit. The retirement income has to be included in your Ohio adjusted gross income to count, so amounts already deducted on your Ohio return, such as Social Security benefits or military retirement pay, don’t qualify.7Ohio Department of Taxation. Ohio Tax Credits and Their Required Documentation
Local Taxes Add to the State Rate
The flat state tax is only one layer. Most Ohio cities and villages impose their own flat tax on earned income, and these local taxes often hit harder than the state rate. Municipal rates range from 1% in smaller communities up to 3% in some larger cities, with each municipality setting its own by ordinance.8Regional Income Tax Agency. Tax Rates Table There is no income threshold at the local level and no graduated structure. Every dollar of qualifying earned income is taxed at the same municipal rate.
If you work in a different municipality than where you live, your home city may give you a residence tax credit that offsets some or all of the tax you paid to your work city.9Regional Income Tax Agency. Municipal Income Tax Facts Not every city offers a full credit. Some cap it at a percentage of their own rate, which means you can end up paying the full work-city tax plus a partial home-city tax. Check your home city’s credit factor before you assume you are only paying once.
School District Income Tax
More than 200 Ohio school districts levy their own income tax on top of state and municipal taxes. These are voter-approved and collected by the Ohio Department of Taxation rather than by the district itself.10Ohio Department of Taxation. School District Income Tax Rates are set in increments of 0.25%, with no statutory ceiling, though most districts fall between 0.5% and 2%.11Ohio Department of Taxation. Guide to Ohio’s School District Income Tax
Each district picks one of two tax bases, and which one applies to you matters a lot. The traditional base starts with your Ohio adjusted gross income and allows personal exemptions but not the business income deduction. The earned income base covers only wages, salaries, and net self-employment income, leaving out investment income, pensions, and capital gains entirely.11Ohio Department of Taxation. Guide to Ohio’s School District Income Tax If you are retired or live mostly on investments and your district uses the earned income base, you owe nothing to the district. If you owe school district tax, you file the SD 100 alongside your IT 1040.
Residency and Reciprocity
Ohio decides residency through a “contact period” test, counting any portion of a day that includes midnight as one contact period. Hit 213 or more in a tax year and Ohio presumes you are a full-year resident, and overturning that presumption requires clear and convincing evidence.12Ohio Department of Taxation. Information Release 2018-01 – Residency Falling under 213 contact periods and maintaining a permanent home outside Ohio for the full year lets you file an affirmation of nonresidency, provided you also hold no Ohio driver’s license, claim no homestead exemption or property tax reduction on Ohio property, and take no in-state tuition discount at an Ohio college.
Ohio has reciprocal tax agreements with Indiana, Kentucky, Michigan, Pennsylvania, and West Virginia.13Ohio Department of Taxation. Ohio Form IT 4NR – Statement of Residency If you live in one of those states and work in Ohio, filing Form IT 4NR tells your employer to withhold for your home state instead. The same rule works in reverse for Ohio residents commuting to jobs in those states. Reciprocity covers wage income only. Business income, rental income, and other Ohio-source earnings are not covered.
Deadlines and What Late Costs You
Ohio individual returns are due April 15, matching the federal deadline. Ohio honors the federal extension if you need more time to file, but an extension to file is not an extension to pay. Any balance due is still owed on April 15.
Miss the deadline and two separate penalties kick in. The late filing penalty is $50 per month, capped at $500, and it applies even if your return shows a refund.14Ohio Department of Taxation. Ohio Individual Income Tax Failure to File Notice The late payment penalty runs at double the applicable interest rate. For 2026, Ohio’s annual interest rate on unpaid balances is 7%, which accrues monthly at about 0.58%, so the late payment penalty effectively runs around 14% annualized.15Ohio Department of Taxation. Interest Rates Interest and penalties stack on top of each other.
Ohio also charges an interest penalty when you underpay estimated taxes. If you have significant income not subject to withholding, such as business profits, investment gains, or rental income, you are expected to send in quarterly estimated payments. Falling short triggers an automatic interest charge that cannot be waived, even if you pay the full balance when you file.