Ohio (OH) Self Employment Tax Calculator
Tax year: 2026 · Last updated 2026-06-22 · Source: IRS
Reviewed by CalcSumly Engineering Team, calculator authors and data architects · 2026-06-22
Your Schedule C net profit (income minus business expenses).
If you also had a job, enter wages already subject to Social Security.
Total tax (federal SE + OH income tax)
$12,632
Combined effective rate 15.8% of net profit · 2026 tax year
You owe about $11,304 in federal SE tax and $1,328 in Ohio income tax — a combined $12,632. You can deduct $5,652 from federal income tax.
How this Ohio self-employment tax calculator works
This calculator estimates your total tax on self-employment income in Ohio for 2026. It combines two distinct layers of tax:
- Federal self-employment tax (Schedule SE) — 15.3% on 92.35% of your net profit, split between Social Security (12.4%, capped at the $184,500 wage base) and Medicare (2.9%, no cap). An extra 0.9% Additional Medicare applies above $200,000 (single) or $250,000 (MFJ). The deductible half — 50% of the base SE tax — is then subtracted from your gross income to arrive at federal AGI.
- Ohio state income tax — Ohio taxes Ohio Adjusted Gross Income (OAGI). For W-2 employees, OAGI approximates federal AGI. The first $26,050 of OAGI is exempt from tax; the rate is 2.75% on income above that threshold. All filing statuses use the same bracket structure under HB 96.
Step-by-step calculation
- Net earnings: Net profit × 92.35% = SE tax base.
- Federal SE tax: Social Security + Medicare + Additional Medicare (if applicable).
- Deductible half: ½ × (Social Security + Medicare) — deducted above the line on Form 1040.
- Federal AGI from SE: Net profit − deductible half.
- Ohio taxable income: Federal AGI minus the Ohio standard deduction ($0 single).
- Ohio income tax: Progressive brackets applied (up to 2.75% top rate).
Scope and limitations
What is excluded: Excludes Ohio municipal income taxes (administered by RITA / CCA / municipal tax departments — rates vary by municipality up to 2.5%). School district income tax (SDIT) is also excluded. SDI is not applicable in Ohio. This calculator models a single Schedule C filer with no other income sources. It does not include QBI deduction (20%), health insurance deductions, retirement plan contributions, tax credits, or itemized deductions. Consult a tax professional for your full return.
Use this for planning, not filing. Every rate and threshold is pulled from official IRS, SSA, and Ohio Revised Code § 5747.02 — income tax rates as amended by HB 96 publications and re-checked each January.
Sources
- IRS — Self-Employment Tax (Schedule SE)
- SSA — 2026 Social Security wage base ($184,500)
- IRS — Topic 751 Additional Medicare Tax
- IRS — Rev. Proc. 2025-32 (2026 inflation adjustments)
- IRS — Form 1040-ES (Estimated Tax for Individuals)
- IRS Notice 2025-67 — 2026 Retirement Plan Limits (§415, §402(g), §401(a)(17))
- IRS — SEP Contribution Limits 2026 ($72,000)
- IRS Notice 2026-10 — 2026 Standard Mileage Rates (72.5 cents/mile)
- IRS Rev. Proc. 2013-13 — Home Office Simplified Method ($5/sqft, 300 sqft max)
- IRS Publication 946 (2026) — Section 179 Deduction ($2,560,000 limit; $32,000 SUV cap)
- Ohio Revised Code § 5747.02 — income tax rates as amended by HB 96
- Ohio HB 96 (136th General Assembly) — income tax restructuring, enacted June 30, 2025
- Ohio Department of Taxation — Individual Income Tax
Frequently asked questions
What is Ohio's income tax rate on self-employment income?+
Ohio has a simplified two-bracket structure for 2026 (under HB 96): 0% on the first $26,050 of Ohio taxable income, then 2.75% on income above $26,050. Ohio eliminated personal exemptions in HB 96. This makes Ohio's state income tax exceptionally low compared to other states — a freelancer earning $80,000 net profit pays approximately $1,481 in Ohio state income tax. Source: Ohio Department of Taxation.
Did Ohio recently simplify its income tax structure?+
Yes. Ohio's HB 96 (2026) dramatically simplified the state income tax to just two brackets: 0% up to $26,050 and 2.75% above that. Previously Ohio had multiple brackets up to 3.99%. The exemption amounts that previously reduced taxable income were also eliminated. The net effect is that lower-income earners pay nothing, while earners above $26,050 pay a modest flat rate on the excess.
Does Ohio have a municipal income tax on self-employment income?+
Yes. Ohio municipalities (cities and villages) levy local income taxes ranging from 0% to 3%, applied to self-employment income earned or sourced in those municipalities. Municipal tax is not included in this calculator. RITA (Regional Income Tax Agency) administers collections for many Ohio municipalities. Check your city's rate at rita.dst.oh.us.
What is self-employment tax?+
Self-employment (SE) tax is the Social Security and Medicare tax paid by freelancers, 1099 contractors, and sole proprietors. Employees split these costs with their employer (7.65% each); when you work for yourself you pay both halves — 15.3% total — on 92.35% of your net profit. It is separate from, and on top of, federal and state income tax.
Do I also owe Ohio state income tax on my self-employment income?+
Yes. In addition to federal SE tax, Ohio taxes self-employment net profit as ordinary income. This calculator shows both: the federal SE tax (Social Security + Medicare) and the estimated Ohio state income tax side by side, so you can see your true combined tax bill.
Can I deduct half of my self-employment tax?+
Yes — from federal income tax. You can deduct one half of your Social Security and Medicare SE tax as an above-the-line adjustment to income on Form 1040. This deductible half also reduces your federal AGI, which in turn reduces your state taxable income in most states (except Pennsylvania, which taxes gross compensation regardless).
How can I lower my self-employment tax?+
SE tax is based on net profit (gross revenue minus business expenses), so every legitimate business deduction reduces both your SE tax and your state income tax. Common deductions include home-office use ($5/sqft simplified method), equipment and software (Section 179), business mileage, and professional services. The standard deduction and QBI deduction reduce income tax only — not SE tax.
When do I pay self-employment tax?+
SE tax is paid through quarterly estimated payments (Form 1040-ES), due April 15, June 16, September 15, and January 15 for the prior year's fourth quarter. If you expect to owe $1,000 or more in federal tax after withholding, you generally must pay quarterly to avoid the IRS underpayment penalty. Most states that tax SE income have parallel quarterly estimated payment requirements.
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