Free 2025 & 2026 IRS Tool
Self-Employment Tax Calculator
Estimate exactly what you owe in Social Security and Medicare tax on your 1099, freelance, or sole proprietor income — instantly, for free, using current IRS rates for 2025 and 2026.
- 15.3% SE tax rate
- 2025 & 2026 wage bases
- Quarterly payment breakdown
Enter your income
Your net profit from Schedule C — income minus business expenses.
Wages already subject to Social Security tax reduce the SE wage base available.
Estimate only. Not a substitute for a filed return or a licensed tax professional.
Your results
- Social Security (12.4%)
- $0
- Medicare (2.9%)
- $0
- Additional Medicare (0.9%)
- $0
- Deductible half (Schedule 1)
- $0
- Set aside per quarter
- $0
How self-employment tax is calculated in 2025 and 2026
Self-employment tax is the freelancer, contractor, and sole proprietor version of the payroll tax that W-2 employees split with their employer. Because a self-employed worker has no employer to match the contribution, the IRS collects both halves through Schedule SE — a combined 15.3% self-employment tax rate made up of 12.4% for Social Security and 2.9% for Medicare.
Step 1: Take 92.35% of your net earnings
The IRS first reduces your net Schedule C profit to 92.35% before applying the tax. This adjustment mirrors the fact that a W-2 employee's wages never include the employer's half of FICA in the first place, so self-employed taxpayers get an equivalent break.
Step 2: Apply 12.4% Social Security up to the wage base
The Social Security portion only applies up to the annual wage base — $176,100 for 2025 and $184,500 for 2026. Earnings above that threshold, from any combination of W-2 wages and self-employment income, are not subject to the 12.4% Social Security tax.
Step 3: Apply 2.9% Medicare with no cap
Unlike Social Security, Medicare tax has no ceiling. The full 2.9% applies to every dollar of your adjusted net earnings, no matter how high your income climbs.
Step 4: Add 0.9% Additional Medicare tax if you're a high earner
Once your combined wages and self-employment income exceed $200,000 (single or head of household) or $250,000 (married filing jointly), an extra 0.9% Medicare surtax applies to the amount above that threshold. There's no employer match and no deduction for this portion.
The self-employment tax deduction
You can deduct half of your self-employment tax — the employer-equivalent portion — from your gross income when calculating your adjusted gross income (AGI) on Schedule 1. This lowers your income tax bill even though it doesn't reduce the SE tax itself.
Do I need to pay self-employment tax?
If your net self-employment earnings are $400 or more for the year, you're required to pay SE tax and file Schedule SE with your Form 1040, regardless of whether you also hold a W-2 job.
Frequently asked questions
Who has to pay self-employment tax?
Anyone with net self-employment earnings of $400 or more in a year — including sole proprietors, freelancers, 1099 contractors, and active LLC members — must pay SE tax and file Schedule SE with Form 1040.
Does this calculator include federal and state income tax?
No. This tool calculates only the 15.3% self-employment tax (Social Security and Medicare). Federal and state income tax are calculated separately on your total taxable income and are not included in this estimate.
How accurate is this for quarterly estimated payments?
It gives a solid starting point for Form 1040-ES quarterly payments, but your actual liability also depends on income tax, deductions, and credits. For a precise quarterly plan, a Fincsol advisor can build a full projection.
Do I still need an accountant if I use this calculator?
Yes. This tool estimates one piece of your total tax picture. An accountant accounts for deductions, entity structure (like S-Corp elections), retirement contributions, and state-specific rules that can meaningfully change what you actually owe.
Should I consider an S-Corp to reduce self-employment tax?
Possibly. An S-Corp owner pays SE-equivalent tax only on a reasonable salary, with remaining profit distributed free of SE tax. This usually only pays off once steady profit is well above typical sole-proprietor income — a Fincsol advisor can model whether it makes sense for you.
Is my data stored when I use this calculator?
No. All calculations run in your browser only — nothing you enter is sent to or stored on Fincsol's servers.