How is 2026 self-employment tax calculated?

SE tax is computed on 92.35% of your net profit. That base is taxed 12.4% for Social Security up to the $176,100 wage base and 2.9% for Medicare with no cap. On $80,000 of net profit, net earnings are $73,880, and SE tax is $11,303.

Why is only 92.35% of my profit taxed?

The 7.65% reduction mirrors the employer-side payroll deduction an employee would not pay tax on. Multiplying net profit by 0.9235 gives the net earnings figure that Schedule SE actually taxes, so a $100,000 profit is assessed on $92,350.

How does a W-2 job affect my SE tax?

Social Security tax stops at a combined $176,100 of wages plus net earnings. If your W-2 already paid Social Security on $100,000, only $76,100 of your self-employment net earnings can still be hit by the 12.4% Social Security portion; the 2.9% Medicare portion still applies to all of it.

Can I deduct part of my self-employment tax?

Yes. You deduct the employer-equivalent half of SE tax as an above-the-line adjustment to income. On an $11,303 SE tax bill, you deduct $5,652, which lowers your income tax even though it does not reduce the SE tax itself.

What is the Self-Employment Tax Calculator (2026)?

Calculate your 2026 self-employment tax — 12.4% Social Security on net earnings up to the $176,100 wage base plus 2.9% Medicare with no cap, computed on 92.35% of net profit. Shows total SE tax and the deductible employer-equivalent half. It runs free in your browser on Gera Tools, with nothing uploaded.

Self-Employment Tax Calculator (2026)

Name: Self-Employment Tax Calculator (2026)
Creator: Gera Tools
License: https://creativecommons.org/licenses/by/4.0/

Get one useful tool a week

Like this tool? Enter your email and we'll send you one genuinely useful Gera tool a week — plus a link to come back to this one. No spam, one-click unsubscribe any time.

Calculate your 2026 self-employment tax

If you earn 1099 or freelance income, you owe self-employment (SE) tax to cover both halves of Social Security and Medicare. This calculator applies the 2026 rates and wage base so you can size your bill before quarterly estimates come due.

How it works

SE tax is assessed on 92.35% of your net profit. That net-earnings figure is taxed at 12.4% for Social Security, but only up to the $176,100 wage base, and 2.9% for Medicare with no cap.

net earnings    = net profit * 0.9235
SS tax          = min(net earnings, 176,100 - W-2 wages) * 0.124
Medicare tax    = net earnings * 0.029
SE tax          = SS tax + Medicare tax
deductible half = SE tax / 2

Any W-2 wages already subject to Social Security reduce the remaining wage base for the 12.4% portion. You can deduct the employer-equivalent half of the SE tax as an adjustment to income.

Why 92.35% and why deduct half?

The 92.35% multiplier (which is 1 − 0.0765) mirrors the position of an employee. An employee pays 7.65% in FICA tax on their wages, but the employer also pays 7.65% separately — money the employee never sees. A self-employed person pays both halves themselves. To put them on equal footing with employees, the IRS computes SE tax on 92.35% of profit (as if the “employer half” had already come off the top), and then allows a deduction for that same employer-equivalent half, which is SE tax ÷ 2.

Worked examples at different income levels

For example, a freelance designer with $50,000 net profit:

Net earnings: 50,000 × 0.9235 = $46,175
Social Security (well under $176,100 wage base): 46,175 × 0.124 = $5,726
Medicare: 46,175 × 0.029 = $1,339
SE tax: $7,065
Deductible half: $3,532

Now a solo consultant with $200,000 net profit (exceeds wage base):

Net earnings: 200,000 × 0.9235 = $184,700
Social Security: only $176,100 of net earnings is subject, so 176,100 × 0.124 = $21,836
Medicare: all $184,700 × 0.029 = $5,356
SE tax: $27,192
Deductible half: $13,596

Note: high earners with net earnings above $200,000 (single) also owe an additional 0.9% Additional Medicare Tax under the ACA, which this calculator does not include.

Quarterly estimated taxes

SE tax is not withheld at source, so self-employed people must pay estimated taxes quarterly. A common planning approach is to set aside roughly 25–30% of each payment received, then use the actual SE tax plus your marginal income tax rate to refine that figure. The quarterly due dates are typically mid-April, mid-June, mid-September, and mid-January.

Notes

This is an estimate, not tax advice. It covers SE tax only, not your separate federal or state income tax, and ignores the 0.9% Additional Medicare Tax and the optional low-income methods. Rates and the $176,100 wage base follow IRS and Social Security Administration figures for 2026; confirm with the IRS or a tax professional.