Free Self Employment Tax Calculator 2026
First time freelancing? Just got a 1099-NEC? Our free self employment tax calculator shows your exact SE tax, federal income tax, and quarterly estimated payment amounts — so you never get blindsided by an April tax bill again. Updated for 2026 IRS rules, the $184,500 Social Security wage base, and the 15.3% self-employment tax rate.
Business Income
Self-Employment Earnings
Total 1099, consulting, or gig income before any expenses.
Deductible costs: software, home office, mileage, etc.
If you also have a day job, enter that salary to account for Social Security caps.
Tax Pro Tip
Self-employed individuals must pay both the employer and employee portions of Social Security and Medicare taxes, totaling 15.3%. However, you can deduct half of this tax from your taxable income.
$11,749
Combined SE + Federal Income Tax
$48,251
Annual Profit After All Taxes
Detailed Tax Breakdown
Self Employment Tax Rate 2026 — The Exact Numbers
Self-employment tax is a 15.3% tax that self-employed individuals pay to fund Social Security (12.4%) and Medicare (2.9%). Unlike employees who split FICA taxes with employers, self-employed individuals pay both portions.
Why 92.35% and not 100%?
The IRS multiplies net income by 92.35% (= 1 minus 7.65%) because employees only pay FICA on wages — not on the employer's matching contribution. This adjustment gives self-employed workers an equivalent benefit.
2026 SE Tax Rates Summary
| Tax Component | Rate | Cap |
|---|---|---|
| Social Security | 12.4% | First $184,500 |
| Medicare | 2.9% | No cap |
| Additional Medicare | 0.9% | Over $200k (Single) |
| Total SE Tax Rate | 15.3% | Up to SS wage base |
The Two-Tax Reality — What You Actually Pay
When you are self-employed, you pay TWO separate federal taxes on the same income. Most people only think about income tax — but SE tax hits first and hits hard.
$5,417
Total Federal Tax
$13,078
Total Federal Tax
$26,423
Total Federal Tax
$36,603
Total Federal Tax
Most 1099 workers should set aside 25-30% of net income for federal taxes.
Top Tax Deductions for Self-Employed Workers
Home Office
$5/sq ft simplified, or actual % of home expenses.
Business Mileage
$0.725/mile for 2026. Track every mile.
Health Insurance
100% deductible for self & family above-the-line.
SEP-IRA / 401k
Up to 25% of net profit or $70k in 2026.
Business Gear
Laptops, software, cameras, mics — 100% deductible.
QBI Deduction
Deduct up to 20% of net business income.
Internet & Phone
Deduct the business-use percentage of bills.
SE Tax Deduction
Automatically deduct 50% of your SE tax.
Quarterly Estimated Taxes — 2026 Due Dates
| Quarter | Income Period | Due Date |
|---|---|---|
| Q1 | Jan 1 – Mar 31 | April 15, 2026 |
| Q2 | Apr 1 – May 31 | June 16, 2026 |
| Q3 | Jun 1 – Aug 31 | Sept 15, 2026 |
| Q4 | Sept 1 – Dec 31 | Jan 15, 2027 |
The Safe Harbor Rule
Paying 100% of the prior year's tax liability in four equal installments eliminates the underpayment penalty regardless of what you actually owe in the current year. If your AGI exceeded $150,000 last year — pay 110% of last year's tax liability.
W-2 + 1099 Income — Combined Calculation
Many Americans have both a salaried W-2 job and freelance 1099 income. Here is how the combination works:
- SE tax applies only to 1099 net income — not W-2 wages.
- Federal income tax applies to combined income from both sources.
- Existing W-2 withholding covers most of income tax.
Combined Strategy
If you have a W-2 day job, increase your W-4 withholding using Step 4(a) to have your employer cover tax on your freelance income — eliminating the need for quarterly payments.
Self-Employment Tax FAQs — 2026 Expert Guide
Financial Disclaimer
This tool provides estimates based on projected 2026 tax laws and OBBBA legislation. It is not intended to replace professional tax advice or the official IRS Form 1040-ES.
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