Self-Employment Tax Calculator 2026: 15.3%

What does this calculator answer?

You get a 2026 self-employment tax estimate: federal Social Security and Medicare tax on net trade or business earnings. It excludes regular federal income tax.

Enter profit after ordinary business expenses, not client payments before expenses. Schedule SE, the IRS self-employment tax form, multiplies your net income by 92.35%, then applies payroll-tax rates to that adjusted base.

In 2026, you pay 12.4% for Social Security and 2.9% for Medicare. Social Security stops when your combined W-2 wages and self-employment earnings reach the $184,500 contribution and benefit base. Medicare has no wage cap. Review the 2026 self-employment tax figures and the Social Security Administration's 2026 contribution and benefit base table. Rates follow IRC sections 1401 and 1402.

You may owe an extra 0.9% Additional Medicare Tax when combined Medicare wages and self-employment earnings exceed your filing-status threshold. See the 2026 draft Instructions for Form 8959.

Is this a self-employment tax calculator?

Yes. This page is the Numerandi self-employment tax calculator, including the shorter SE tax calculator job and payroll tax for freelancers. Enter net profit, filing status, and any W-2 Social Security wages. The headline result is estimated self-employment tax. Supporting lines show Social Security, Medicare, the deductible half of regular SE tax, and a quarterly shortcut.

It is not a 1099 tax-rate page. Start with the 1099 tax rate article. That article owns the rate layers. This tool owns the Social Security and Medicare dollar estimate.

Is this payroll tax for freelancers?

Yes. Payroll tax for freelancers is the same Social Security and Medicare job as this self-employment tax calculator. Employees see those taxes withheld from a paycheck. Freelancers pay both halves on net profit through Schedule SE.

Enter net profit, filing status, and any W-2 Social Security wages. The headline is estimated self-employment tax—the payroll-tax-style amount, not federal income tax.

What should you enter?

Use net self-employment profit: business income minus ordinary and necessary business expenses. That is the Schedule C idea, not the sum of Forms 1099 and not the cash you moved to a personal account. If you still need which expenses create that profit, read what you can write off as self-employed. Home-working costs that need exclusive use live on what you can write off working from home.

Use filing status only so the calculator can test Additional Medicare Tax. The regular 12.4% Social Security and 2.9% Medicare rates do not change with filing status.

Use W-2 Social Security wages from every employee job. Those wages share the 2026 Social Security wage base with your self-employment earnings. Enter $0 if you have no W-2 job. If your W-2 Social Security and Medicare wage boxes differ in an unusual way, use Form 8959 and Schedule SE directly.

What is Schedule SE?

Schedule SE is the IRS form that figures Social Security and Medicare tax on your net self-employment earnings. You use it with Form 1040 when freelance or business profit creates self-employment tax. It is not about commuting, employee withholding, or regular federal income tax.

This calculator helps you estimate the tax Schedule SE would compute: your net self-employment profit times the 92.35% Schedule SE earnings factor, then Social Security and Medicare on that base up to the shared wage cap. Your estimated self-employment tax result matches that planning path. Line-by-line filing rules, optional methods, and special income types stay in the Schedule SE instructions and the IRS self-employment tax overview.

You generally attach Schedule SE when net earnings from self-employment reach $400, unless an exception or optional method applies.

How does the calculation work?

The calculator multiplies your net business income by 92.35% to match Schedule SE's net earnings step. It applies 12.4% Social Security tax only on the portion of that base that fits under your remaining 2026 wage base after W-2 Social Security wages. It applies 2.9% Medicare tax on the full adjusted base and adds 0.9% Additional Medicare Tax when combined wages and self-employment earnings cross your filing-status threshold. Your displayed quarterly figure is the resulting SE tax divided by four. It does not include federal income tax, credits, or withholding.

Each displayed number also shows its formula. The 2026 wage base, earnings factor, and rates in the reference panel come from the same registry as the 2026 self-employment tax figures.

What is the Social Security wage base?

The Social Security wage base is the annual earnings ceiling for the 12.4% Social Security tax. For 2026 it is $184,500, from the Social Security Administration's contribution and benefit base table. Covered W-2 wages and self-employment earnings share that one ceiling.

Medicare does not use that cap. The regular 2.9% Medicare tax applies to the full Schedule SE base. Additional Medicare Tax can still apply above your filing-status threshold.

What is the deductible half of self-employment tax?

You can usually deduct half of your regular self-employment tax on Schedule 1. This adjustment lowers your adjusted gross income. It does not reduce the SE tax you still owe on Schedule SE.

The deductible half is 50% of regular SE tax only: Social Security plus regular Medicare on your Schedule SE base. Additional Medicare Tax is not deductible. You do not get to deduct half of that extra 0.9% charge. The IRS explains the income adjustment in Topic 554.

This calculator shows that amount separately so you can use it in your income-tax projection without treating it as a credit against SE tax. The self-employed health insurance deduction is a different Schedule 1 item. It does not reduce this SE-tax result. Whether you can deduct health insurance as self-employed lives on can you deduct health insurance as self-employed.

How do your W-2 wages change the answer?

Your employee wages use part of the Social Security ceiling shared by employment and self-employment. If you already have $150,000 of Social Security wages, only $34,500 of otherwise eligible 2026 self-employment earnings can receive the 12.4% charge. The regular 2.9% Medicare calculation still uses all your adjusted self-employment earnings. This tool treats your W-2 entry as both Social Security and Medicare wages. If your wage boxes differ unusually, use Form 8959 and Schedule SE directly.

How does a worked 2026 example look?

Suppose you have $80,000 of 2026 net freelance profit, no W-2 wages, and single filing status. Schedule SE's 2026 method gives you $73,880 of net earnings: $80,000 × 92.35%. That is below the 2026 $184,500 Social Security wage base, so the full amount receives the 2026 12.4% Social Security tax, or $9,161.12. Your 2026 2.9% Medicare part is $2,142.52. You owe no 2026 Additional Medicare Tax because the combined amount is below the unchanged $200,000 single threshold. Your estimated SE tax is therefore $11,303.64. The displayed deductible half is $5,651.82. Dividing only this tax into four gives you $2,825.91 per payment.

What does this calculator not calculate?

This tool answers only the Social Security and Medicare self-employment-tax layer. It does not calculate:

• Federal income tax, tax brackets, or credits
• State or local income tax
• The qualified business income deduction, which can lower income tax but does not reduce Schedule SE earnings
• Withholding already taken from a W-2 job
• A complete Form 1040-ES estimated-tax payment
• Whether you are correctly classified as an independent contractor
• Optional Schedule SE methods or farm, church, partnership, railroad, community-property, or nonresident rules

If you need the income-tax QBI layer after you know this payroll-tax amount, use the 2026 QBI deduction calculator. If you need a 1040-ES / estimated tax calculator for what to pay and when, use the 2026 quarterly estimated tax calculator. If you still need whether you can deduct health insurance as self-employed, read can you deduct health insurance as self-employed. That article owns the Schedule 1 deduction. This tool owns the Social Security and Medicare layer used in its income cap.

Which mistakes and edge cases should you check?

• Entering gross client payments instead of net Schedule C profit overstates the base.
• Ignoring W-2 Social Security wages can charge the 2026 12.4% portion above the shared 2026 $184,500 ceiling.
• Treating the deductible half as a credit incorrectly subtracts it from tax owed.
• Assuming the quarterly shortcut includes income tax, credits, or withholding can leave a large balance.
• Treating 15.3% of gross 1099s as your whole tax bill skips the 92.35% adjustment, the wage base, income tax, and state tax.
• Farm income, partnership allocations, church income, optional methods, and community-property rules can require different Schedule SE treatment.

How should you use the quarterly number?

Use SE tax divided by four only as a planning shortcut. It is not the complete Form 1040-ES calculation. If you need a cash reserve or tax-reserve percentage rather than this SE-tax shortcut, read how much to set aside for 1099 taxes. Whether estimates apply at all lives on do freelancers have to pay quarterly taxes. If a deadline already passed, read what happens if you miss a quarterly tax payment. Your estimated payment may include federal income tax and may be reduced by withholding or credits. The deductible half of regular SE tax lowers adjusted gross income on Form 1040; it does not reduce the SE tax in this shortcut or change the amount you divide by four. If your income arrives unevenly, you may qualify for the annualized-income installment method, based on when you earned income, instead of equal payments. Use the 2026 quarterly estimated tax calculator as the 1040-ES / estimated-tax page for a safe-harbor-oriented view, and reconcile your result with current Form 1040-ES.

This calculator assumes you have ordinary nonfarm earnings. It does not implement optional Schedule SE methods or model church-employee, farm, partnership, railroad, community-property, or nonresident rules. It also does not determine whether you are correctly classified as an independent contractor.

When should you use this self-employment tax calculator?

Use it when you need a 2026 Schedule SE estimate from net profit before you plan income tax or estimated payments. Start with the 1099 tax rate article; this tool estimates only the Social Security and Medicare layer. Compare contractor vs employee take-home with the 2026 1099 vs W-2 calculator. If you still need the offer-value decision after that comparison, read is it better to be 1099 or W-2. Turn an annual tax picture into what to pay and when with the 2026 quarterly estimated tax calculator. If section 199A may apply after you know this payroll-tax layer, use the 2026 QBI deduction calculator. Model whether entity structure could change payroll tax with the LLC vs S-corp tax calculator. The Schedule C vs S corp article owns the should-I-elect decision. What salary your S corp should pay you lives on S-corp reasonable salary. The deductible half on this page is also the starting adjustment for the 2026 Solo 401(k) vs SEP IRA calculator.

What should you do next?

Save your current profit-and-loss statement, which lists your business income and expenses. Confirm that your input matches tax profit rather than cash withdrawals. Put the headline SE-tax amount toward what to pay and when with the 2026 quarterly estimated tax calculator. Add your expected federal income tax and state tax, subtract withholding and credits, and compare the total with timely payments you already made. If you have qualified business income, check the 2026 QBI deduction calculator next; that deduction does not reduce this SE tax. Recalculate after a major contract or W-2 job changes your 2026 picture. Then use final 2026 Schedule SE and Form 1040-ES before you pay or file.