How to Calculate Self-Employment Tax in 2026
2026 TAX YEAR · 2027 FILING SEASON · U.S. FEDERAL TAXES
To calculate self-employment tax in 2026, start with your freelance profit: client payments minus deductible business expenses. Under the regular method, multiply that profit by 92.35%, then work out Social Security and Medicare tax. If you have no employee wages and stay below the limits explained below, the shortcut is profit × 0.9235 × 0.153. Federal and state income taxes are separate.
For example, $72,000 in client revenue minus $12,000 in deductible business costs leaves $60,000 of profit. Under the assumptions below, that produces $8,477.73 in regular self-employment tax, not a complete annual tax bill.
This guide shows each step, compares three profit levels and explains why a W-2 job can change the result. You can then reproduce the examples in the free Freelance Tax Estimator.
THE $60,000 PROFIT EXAMPLE AT A GLANCE
01 · BUSINESS PROFIT
$60,000
02 · SE-TAX EARNINGS BASE
$55,410
03 · REGULAR SE TAX
$8,477.73
Tax references and calculator examples checked October 9, 2026. These hypothetical examples are for US freelancers who report business income on their individual returns as sole proprietors. They are planning illustrations, not personal filing advice. Other tax structures and special methods need separate treatment.
What is self-employment tax?
Self-employment tax (SE tax for short) pays for Social Security and Medicare. It is separate from the federal income tax on your individual tax return. A W-2 employee and their employer normally share these payroll taxes. When you work for yourself, you generally pay both parts through SE tax.
The regular components are 12.4% Social Security and 2.9% Medicare. Together, they make the familiar 15.3% headline rate. That does not mean every freelancer owes 15.3% of every client payment.
The IRS self-employment tax guidance generally requires SE tax when net earnings from self-employment reach $400. Special cases exist, so do not confuse that threshold with the amount a client must pay before issuing a particular information form.
Three numbers help keep the calculation straight:
| Number | Meaning in this example |
|---|---|
| Gross business revenue | Client payments before business costs |
| Net business profit | Client payments minus deductible business expenses |
| SE-tax earnings base | The amount used to calculate SE tax: generally 92.35% of profit |
Your household's taxable income is another calculation. It can be affected by other income, deductions and filing status.
How do you calculate self-employment tax step by step?
Assume a freelancer has $72,000 in annual revenue, $12,000 in deductible operating costs, no employee wages, and no special SE-tax method. The example stays below the Social Security limit and Additional Medicare threshold.
1. Find your business profit
$72,000 revenue − $12,000 business expenses = $60,000 profit
For a typical sole proprietor, Schedule C reports business income and expenses to work out profit. Schedule SE then calculates self-employment tax. These are different parts of your federal return; see the IRS self-employed tax center.
Use expenses with the correct tax treatment. A cash purchase is not automatically an immediate deduction. Keep personal spending separate and use records rather than an expense percentage selected to make the result smaller.
If you already know your profit, do not subtract the same costs again. In this example, entering $60,000 as revenue and then another $12,000 as expenses would incorrectly reduce profit to $48,000.
2. Find the amount used to calculate SE tax
$60,000 × 0.9235 = $55,410
In plain English, the regular method uses $92.35 of each $100 of profit to calculate SE tax. That is what “earnings base” means here. It is not another expense to subtract from your business records.
The IRS's 2026 self-employment tax worksheet, on page 9 of Form 1040-ES, lays out this factor and the separate Social Security and Medicare calculations.
3. Calculate each tax component
| Calculation | Amount |
|---|---|
| Social Security: $55,410 × 12.4% | $6,870.84 |
| Medicare: $55,410 × 2.9% | $1,606.89 |
| Regular self-employment tax | $8,477.73 |
The shortcut gives the same result here:
$60,000 × 92.35% × 15.3% = $8,477.73
Use this shortcut for the below-limit example described here. If you have W-2 wages or higher earnings, use the separate Social Security and Medicare steps below.
How much is SE tax on $30,000, $60,000 or $100,000 profit?
This table uses the same assumptions: 2026 ordinary sole-proprietor income, no W-2 wages, no special methods and no Additional Medicare Tax.
| Annual business profit | 92.35% earnings base | Regular SE tax |
|---|---|---|
| $30,000 | $27,705 | $4,238.87 |
| $60,000 | $55,410 | $8,477.73 |
| $100,000 | $92,350 | $14,129.55 |
On mobile, swipe sideways inside the table to see all columns.
Amounts are rounded to cents for comparison. Filing software and IRS form rounding can differ slightly.
The shortcut equals about 14.13% of profit in these cases. That is the mathematical result of 92.35% × 15.3%, not a recommended percentage to reserve for all taxes. It excludes federal income tax, state tax and any other applicable taxes.
What changes above the 2026 Social Security limit?
The Social Security Administration sets the 2026 wage base at $184,500. For SE tax, the 12.4% component applies only to the remaining covered earnings within that limit. Regular Medicare tax has no comparable earnings cap.
With no wages, compare the 92.35% earnings base, rather than gross revenue, with the limit. With covered employee wages, those wages use some or all of your available Social Security base first.
The regular calculation can be expressed as:
- Social Security: 12.4% × the smaller of your SE earnings base or your remaining Social Security wage-base room.
- Medicare: 2.9% × your SE earnings base.
For a straightforward case, remaining room is $184,500 less your own wages subject to Social Security, with a minimum of zero. Use the correct wage records; Social Security wages and Medicare wages can differ.
What if you have a W-2 job and freelance income?
Consider a single filer with $170,000 of wages subject to both Social Security and Medicare, plus $42,000 in freelance revenue and $12,000 in deductible business costs.
Freelance profit is $30,000. Its regular SE earnings base is $27,705.
| Calculation | Amount |
|---|---|
| Social Security room: $184,500 − $170,000 | $14,500 |
| Freelance Social Security: $14,500 × 12.4% | $1,798.00 |
| Freelance Medicare: $27,705 × 2.9% | $803.45 |
| Regular tax on the freelance earnings | $2,601.45 |
The same $30,000 profit with no W-2 wages produced $4,238.87 above. The difference comes from wages already using part of the Social Security limit; Medicare still applies to the freelance earnings.
In this single-filer example, $170,000 + $27,705 = $197,705 of combined relevant earnings, below the $200,000 Additional Medicare threshold. Employee payroll taxes on the salary remain a separate cost.
Use your own wages for your own Social Security limit. A spouse's wages do not consume your individual limit. On a joint return, combined income can still matter for income tax and Additional Medicare Tax. If both spouses are self-employed, calculate their regular SE tax separately.
If your question is whether to leave employment for a contract, use the 1099 vs W-2 contractor-rate guide for the separate salary, benefits and billable-hours comparison.
When does Additional Medicare Tax apply?
An extra 0.9% may apply above these filing-status thresholds:
| Filing status | Threshold |
|---|---|
| Married filing jointly | $250,000 |
| Married filing separately | $125,000 |
| Other filers | $200,000 |
Wages and self-employment income interact in this calculation. Reaching the Social Security limit does not switch Medicare off, and the Additional Medicare threshold is not a gross-revenue threshold. See IRS Topic 560 for the combined-income rules.
Our three standalone profit examples and the specified single-filer W-2 example do not trigger this additional tax. Do not reuse that assumption for another filing status or income mix.
Does deducting half of SE tax cut the tax bill in half?
No. The employer-equivalent deduction is an adjustment when calculating income tax. It does not refund half of SE tax or halve the Social Security and Medicare amount itself.
For the $60,000-profit example:
$8,477.73 ÷ 2 = approximately $4,238.87
That is the deductible half of the regular tax, not the remaining tax due. The income-tax benefit depends on your actual return. The IRS Schedule SE instructions distinguish this deduction from Additional Medicare Tax, which is not included in the deductible half.
Similarly, do not subtract the standard deduction from business profit before calculating regular SE tax. Income-tax deductions and the SE-tax earnings base are different parts of the return.
Does the QBI deduction reduce self-employment tax?
No. The qualified business income (QBI) deduction can lower federal income tax if you qualify, but it does not lower SE tax. The IRS Form 8995-A instructions explain that distinction. Do not subtract a QBI deduction from the $60,000 profit before applying the SE-tax formula.
That is why switching the QBI option in a calculator may change federal income tax while the SE-tax result stays the same. Eligibility and deduction limits require a separate income-tax calculation. For a worked comparison of the ordinary 20% deduction and the new $400 minimum, see our 2026 QBI deduction guide for freelancers.
How can you check these numbers in the Tax Estimator?
Open the Freelance Tax Estimator and reproduce the main example:
- Select 2026 and Annual.
- Enter 72,000 in gross income and 12,000 in business expenses.
- Choose Single for this walkthrough.
- Keep W-2 wages, S-Corp mode, state tax, retirement, itemized deductions and dependents off or zero for this example. Start from clean inputs if an earlier scenario was saved.
- Review the Self-Employment Tax line separately from federal income tax and total tax.
The live check showed $8,477.73 SE tax and a $4,238.87 half-SE deduction. With the QBI estimate left on and the stated basic settings, it also showed $3,559.47 federal income tax and $12,037.20 total estimated tax. That illustrates why the SE-tax number alone is not your full tax budget.
For the side-income example, change gross freelance income to 42,000, retain 12,000 of expenses, and enable W-2 wages in Advanced Options with 170,000 in Your W-2 Wages.
Read the changed result label carefully: W-2 mode displays W-2 + Self-Employment Payroll Taxes. In our test, that combined line was $15,606.45: $13,005 of employee payroll tax plus approximately $2,601.45 on freelance earnings. Do not mistake the combined number for tax on the freelance business alone.
These are tested illustrations, not guaranteed results for another household. The toolkit offers live estimates with no signup and PDF/PNG exports, so you can retain a scenario while reviewing the assumptions.
Is SE tax the amount you should pay each quarter?
Not by itself. Estimated payments can cover income tax as well as SE tax, and withholding, prior-year tax and payment timing can change what you need to pay.
Dividing $8,477.73 by four only divides this example's annual SE tax into four pieces. It does not establish the correct quarterly federal payment. The IRS self-employed tax center explains the relationship between SE tax, income tax and estimated payments.
Use the quarterly-tax guide for freelancers for the payment workflow. For organizing a tax reserve alongside living costs, use the Budget Planner. A reserve is cash you set aside; it is not an IRS payment until you actually make one.
Common mistakes to catch before using your estimate
- Taxing revenue instead of profit: account for properly deductible business costs first.
- Deducting costs twice: enter gross revenue and expenses separately, or use a profit figure consistently.
- Treating 15.3% as the complete tax rate: federal and state income taxes are additional calculations.
- Ignoring employee wages: your own covered wages can reduce the Social Security room for SE tax.
- Using last year's wage base: check the year in both the example and the calculator.
- Reading a combined payroll line as freelance tax: check the result label after enabling W-2 inputs.
Your next step
Gather your expected annual client revenue, deductible business costs and any employee wage records. Work out profit first, then check the applicable earnings base and tax components. Use the Tax Estimator to test your inputs, review the full tax breakdown, and use the quarterly guide when you move from an annual estimate to payment planning.
Run your own 2026 self-employment tax estimate
Enter your freelance income and eligible business expenses, then compare regular self-employment tax with the full federal tax estimate.
Open the Freelance Tax Estimator →Educational estimates only; the tool does not prepare or file your tax return.