Source: https://clockwage44.com/tools/self-employment-tax-calculator/

ClockWage44 is a free hours and pay tracker app for iOS and Android: log shifts across every job and see take-home pay after federal tax, state tax, FICA, overtime and deductions.

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# Self-Employment Tax Calculator

Estimate your 2026 self-employment tax on 1099 and freelance income. See the 15.3% SECA split, the one-half deduction, and what to set aside each quarter.

_Interactive tool: open [the web page](https://clockwage44.com/tools/self-employment-tax-calculator/) to use it. This Markdown copy has the text only._

The tax year sets the Social Security wage base ($184,500) and the Additional Medicare thresholds.

Filing status only changes the 0.9% Additional Medicare threshold. Most earners under that level see no difference.

Estimates only, not tax or legal advice. Self-employment tax is federal only; state income tax is figured separately. Consult a tax professional for your situation.

The quarterly figure covers self-employment tax only. Add federal and state income tax for your full Form 1040-ES payment.

## How Self-Employment Tax Works (SECA vs. FICA)

W-2 employees split their Social Security and Medicare taxes with an employer under FICA: the worker pays 7.65% and the employer matches it. When you work for yourself, there is no employer to match, so you pay both halves under the Self-Employment Contributions Act (SECA). That is the full 15.3%: 12.4% for Social Security and 2.9% for Medicare.

You do not pay that 15.3% on your entire profit, though. Schedule SE first multiplies your net profit by 92.35%. That step drops the employer-equivalent share, so a self-employed person is taxed on a base that matches a W-2 worker's taxable wage instead of being taxed on the money that would cover the employer half.

## How to Calculate Your Self-Employment Tax Step by Step

Take a freelancer with $50,000 of net profit for 2026. Multiply by 92.35% and you get $46,175 of net earnings. That is well under the $184,500 Social Security wage base, so the full amount is subject to the 12.4% Social Security portion, which comes to $5,725.70. The 2.9% Medicare portion adds $1,339.08. There is no Additional Medicare Tax here because $46,175 is far below the $200,000 single-filer threshold. Total self-employment tax is about $7,064.78, an effective rate of roughly 14.1% on the original $50,000 of profit.

If your net earnings climb above the wage base, the Social Security portion stops at the cap (the wage base times 12.4%), while Medicare keeps applying to every dollar. Above your filing-status threshold, the extra 0.9% Additional Medicare Tax kicks in on top. The calculator adjusts for each of these as you change the inputs.

## The One-Half Deduction and Quarterly Estimated Payments

You can deduct the employer-equivalent half of your self-employment tax as an above-the-line adjustment when figuring your adjusted gross income. That is half of the regular Social Security plus Medicare amount; the 0.9% Additional Medicare Tax is left out. This deduction lowers your income tax, not your self-employment tax.

Because no employer withholds tax from freelance income, the IRS expects you to pay as you go through quarterly estimated payments on Form 1040-ES. The quarterly figure here covers self-employment tax only. Add your estimated federal and state income tax on top to size each payment. Self-employment tax is separate from income tax, and this tool does not estimate the income-tax side. For that, pair it with the [take-home pay calculator](https://clockwage44.com/tools/take-home-pay-calculator/).

## From Tracking Hours to Paying Yourself With ClockWage44

Knowing your self-employment tax is only useful if you actually reserve for it. ClockWage44's Hours Tracker lets you log shifts and gigs across multiple jobs, mark each income stream as taxable or not, and see your take-home to the cent on-device. That makes it easier to set money aside every time you get paid instead of scrambling at quarter's end. [Download the app](https://clockwage44.com/#download) so your set-aside math sits next to the hours you actually worked. If you also earn W-2 supplemental pay, the [bonus tax calculator](https://clockwage44.com/tools/bonus-tax-calculator/) covers that side.

## Frequently Asked Questions

Common questions about self-employment tax calculator

### What is the self-employment tax rate for 2026?

It is 15.3%: 12.4% for Social Security plus 2.9% for Medicare. That rate applies to 92.35% of your net self-employment earnings, not your gross revenue. High earners add a 0.9% Additional Medicare Tax above their filing-status threshold.

### How is self-employment tax calculated?

Start with your net profit (business income minus expenses), multiply by 92.35% to get net earnings, then apply 12.4% Social Security up to the wage base and 2.9% Medicare with no cap. The calculator above runs each step and shows the breakdown. To see how the same income affects your paycheck side, try the [take-home pay calculator](https://clockwage44.com/tools/take-home-pay-calculator/).

### What is the Social Security wage base for 2026?

It is $184,500 for 2026, up from $176,100 in 2025. Only net earnings up to that cap are hit with the 12.4% Social Security portion. The 2.9% Medicare portion has no cap and applies to all of your net earnings.

### Do I have to pay self-employment tax?

Generally yes, if your net earnings from self-employment are $400 or more for the year. At that point you file Schedule SE with your Form 1040. Below $400 in net earnings, self-employment tax usually is not owed and Schedule SE is not required.

### Can I deduct part of my self-employment tax?

Yes. You can deduct the employer-equivalent half of your self-employment tax (the Social Security plus Medicare portions) as an above-the-line adjustment to income. It lowers your income tax, not your self-employment tax. The 0.9% Additional Medicare Tax is not part of this deduction.

### What is the Additional Medicare Tax and when does it apply?

It is an extra 0.9% Medicare tax on combined wages and self-employment income above $200,000 for single or head of household filers, $250,000 for married filing jointly, or $125,000 for married filing separately. These thresholds are not indexed for inflation, so more workers cross them each year.

### Is self-employment tax the same as income tax?

No. Self-employment tax covers Social Security and Medicare, the same programs funded by the FICA taxes withheld from a W-2 paycheck. It sits on top of federal and state income tax, which are figured separately on your taxable income. This tool estimates the self-employment tax slice only.

### How much should I set aside for taxes as a freelancer or 1099 contractor?

Set aside your self-employment tax plus estimated federal and state income tax. Many self-employed workers reserve roughly 25% to 30% of net profit and pay quarterly estimated taxes with Form 1040-ES. This tool estimates the self-employment tax portion; add income tax for the full picture, and use the [bonus tax calculator](https://clockwage44.com/tools/bonus-tax-calculator/) if you also take supplemental W-2 pay.

## Related Tools

- [1099 vs W-2 Calculator](https://clockwage44.com/tools/1099-vs-w2-calculator/): Compare a W-2 salary offer with a 1099 contract at 2026 federal rates, then get the equivalent 1099 rate: the gross revenue that leaves you with the same take-home.
- [Bonus Tax Calculator](https://clockwage44.com/tools/bonus-tax-calculator/): Enter your bonus, pick percentage or aggregate withholding, and see federal supplemental tax, FICA, state tax, and your actual take-home for 2026.
- [HSA & FSA Paycheck Impact Calculator](https://clockwage44.com/tools/hsa-fsa-paycheck-impact-calculator/): See how much an HSA or FSA contribution actually costs per paycheck once it dodges federal income tax and FICA.
- [Mileage Reimbursement Calculator](https://clockwage44.com/tools/mileage-reimbursement-calculator/): Apply the correct 2026 IRS mileage rates, including the July 1 increase to 76 cents a mile, and see your reimbursement plus any taxable excess.