Self-Employment Tax Calculator 2026
Estimate your SE tax, quarterly payments, and true take-home from 1099 or freelance income.
This self-employment tax calculator computes your 2026 SE tax (15.3%), federal income tax, QBI deduction (§199A), quarterly estimated payment schedule, and maximum SEP-IRA contribution — giving self-employed workers, freelancers, gig workers, and 1099 contractors a complete picture of what they owe and what to set aside.
How Self-Employment Tax Is Calculated
Unlike W-2 employees who split FICA taxes with their employer (each paying 7.65%), self-employed individuals pay the full 15.3% themselves — effectively doubling the Social Security and Medicare burden. However, several deductions offset this.
| Variable | 2026 Value | Notes |
|---|---|---|
| SE Tax Rate | 15.3% | 12.4% SS + 2.9% Medicare |
| SE Taxable Income Factor | 92.35% | IRS reduces net profit to account for employer half |
| SS Wage Base | $176,100 | SS only applies up to this limit |
| ½ SE Tax Deduction | 50% of SE tax | Reduces AGI — above-the-line deduction |
| QBI Deduction (§199A) | Up to 20% | 20% of qualified business income |
| SEP-IRA Max | $70,000 | 25% of net SE income, capped at $70k |
Worked example: Freelancer earns $120,000 gross, deducts $20,000 in business expenses. Net SE income = $100,000. SE taxable = $100,000 × 0.9235 = $92,350. SS portion = $92,350 × 12.4% = $11,451. Medicare = $92,350 × 2.9% = $2,678. Total SE tax = $14,129. Deduct ½ ($7,065) from AGI = $92,935. QBI deduction (20% of $100k) = $14,587 (capped by AGI). Taxable income = $92,935 − $15,000 (std ded) − $14,587 = $63,348. Federal income tax (single) ≈ $9,434. Total federal tax = $14,129 + $9,434 = $23,563. Quarterly payment ≈ $5,891.
💡 Pro-Tip
S-Corp Election Can Cut SE Tax in Half: Once net SE income exceeds roughly $50,000–$80,000, electing S-Corp status becomes worth examining. An S-Corp owner pays themselves a "reasonable salary" (subject to payroll/FICA taxes), then takes remaining profits as distributions — which are NOT subject to SE tax. On $150,000 net income with a $60,000 salary: SE tax on salary ≈ $9,180, zero SE tax on $90,000 distribution. Versus sole proprietor SE tax ≈ $21,240. Potential savings: $12,060/year. Factor in S-Corp payroll costs (~$2,000–$4,000/year in accounting fees) to find the true break-even point using the S-Corp Tax Calculator.
1099 / Self-Employment Tax Calculator 2026
Your Income & Expenses
Most freelancers qualify. Phases out for specified service trades above ~$220k (2026).
Your 2026 Tax Estimate
Based on your results — what to do next:
Could an S-Corp cut your SE tax?
At $100,000/yr net SE income, an S-Corp election could eliminate a significant portion of your $14,130 SE tax bill.
Full state-by-state take-home breakdown
Your estimated take-home is $77,433. See how state taxes affect that number across all 50 states.
Reduce taxes with a SEP-IRA
You can contribute up to $23,233 to a SEP-IRA — fully deductible and directly reducing your $22,567 tax bill.
Self-Employment Tax FAQ
What is self-employment tax and what rate is it in 2026?
Self-employment tax is 15.3% of your net SE income up to the Social Security wage base ($176,100 in 2026), then 2.9% above that. This covers the combined employer and employee share of Social Security (12.4%) and Medicare (2.9%). An additional 0.9% Medicare surtax applies on net income over $200,000 (single) or $250,000 (married).
Do I have to pay self-employment tax if I earned less than $400?
No. If your net SE earnings are less than $400 for the year, you are not required to pay SE tax and don't need to file Schedule SE. However, even small amounts of self-employment income must be reported on your Form 1040 and are subject to income tax — just not SE tax below the $400 threshold.
What business expenses reduce my self-employment tax?
SE tax is calculated on net profit (gross income minus business expenses). Legitimate deductible expenses include: home office deduction (direct method or $5/sq ft simplified), vehicle mileage ($0.70/mile in 2026), health insurance premiums (100% deductible above-the-line), business equipment, software subscriptions, professional development, travel, and a portion of cell phone/internet bills. Every $1,000 in legitimate business expenses saves approximately $153 in SE tax plus your marginal income tax rate.
When are quarterly estimated tax payments due in 2026?
2026 estimated tax due dates: Q1 (Jan–Mar income) due April 15, 2026. Q2 (Apr–May income) due June 16, 2026. Q3 (Jun–Aug income) due September 15, 2026. Q4 (Sep–Dec income) due January 15, 2027. Underpayment penalty: currently the federal short-term rate + 3 percentage points. Safe harbor: pay at least 100% of prior year's tax (110% if prior year AGI was over $150,000).
Can I deduct health insurance premiums as a self-employed person?
Yes — self-employed individuals can deduct 100% of health insurance premiums (including dental, vision, and Medicare) paid for themselves, their spouse, and dependents as an above-the-line deduction. This deduction reduces your AGI and federal income tax, but unlike business expenses, it does NOT reduce your net SE income for SE tax purposes. You cannot deduct premiums for any month you were eligible for employer-subsidized coverage.