Free Self Employment Tax Calculator (2026)

Person holds US dollars over financial papers, showing income or budget analysis.

Use our free self employment tax calculator to estimate how much you owe in self-employment taxes as a freelancer, independent contractor, or small business owner. Enter your net self-employment income and we’ll calculate your Social Security, Medicare, and estimated federal income tax. Updated for 2026.

Self Employment Tax Calculator

Net Self-Employment Income ($) Filing Status Business Expenses ($) (optional)

How This Free Self Employment Tax Calculator Works

This free self employment tax calculator estimates your tax burden in three steps:

Net Profit: Subtracts your business expenses from your gross self-employment income.
Self-Employment Tax: Applies the 15.3% SE tax rate (12.4% Social Security + 2.9% Medicare) to 92.35% of your net profit. Social Security only applies up to the $168,600 wage base for 2026.
Federal Income Tax: Deducts half of your SE tax and your standard deduction, then applies 2026 federal tax brackets to estimate what you owe.

Your estimated take-home pay is your net profit minus both your self-employment tax and estimated federal income tax.

Free Self Employment Tax Calculator FAQs

What is self-employment tax?

Self-employment tax covers Social Security (12.4%) and Medicare (2.9%) for people who work for themselves. Employees split this with their employer, but self-employed individuals pay the full 15.3% themselves.

Why is SE tax calculated on 92.35% of income?

The IRS allows you to reduce your net earnings by 7.65% before calculating SE tax. This mirrors the employer-side deduction that traditional employees receive. So SE tax applies to 92.35% of your net profit.

Can I deduct half of my self-employment tax?

Yes. The IRS allows you to deduct 50% of your self-employment tax from your gross income when calculating your federal income tax. This calculator applies that deduction automatically.

Does this include state taxes?

No. This free self employment tax calculator estimates federal taxes only. State income tax rates vary by location and are not included in this estimate.

What counts as a business expense?

Common deductible business expenses include home office costs, equipment, software, professional services, and vehicle use for business. Always consult a tax professional to confirm what qualifies for your situation.

Where can I learn more about self-employment taxes?

Visit the official IRS page for full guidance: IRS Self-Employment Tax — Social Security and Medicare.

Need More Free Pay Tools?

Understanding Self Employment Tax

If you freelance, run a small business, or work as an independent contractor, the free self employment tax calculator above can help you plan ahead and avoid surprises at tax time. Self-employment comes with real tax advantages — but also real responsibilities that salaried employees never have to think about.

What Makes Self-Employment Taxes Different?

When you work as a W2 employee, your employer covers half of your Social Security and Medicare taxes. As a self-employed individual, you cover both halves — totaling 15.3%. That said, the IRS does allow you to deduct half of that SE tax from your gross income, which reduces your federal taxable income.

The 92.35% Rule Explained

The IRS does not apply self-employment tax to 100% of your net profit. Instead, it applies SE tax to 92.35% of your net earnings. This is because the IRS treats the 7.65% employer-equivalent portion as a business deduction, similar to how employers deduct their share of payroll taxes. Our free self employment tax calculator applies this rule automatically.

Quarterly Estimated Taxes

Unlike W2 employees who have taxes withheld from each paycheck, self-employed individuals are generally required to pay estimated taxes quarterly. If you expect to owe $1,000 or more in federal taxes for the year, the IRS expects payments in April, June, September, and January. Failing to pay quarterly can result in underpayment penalties.

Business Expenses Reduce Your Tax Bill

One of the biggest advantages of self-employment is the ability to deduct legitimate business expenses. These reduce your net profit, which in turn reduces both your self-employment tax and your federal income tax. Common deductible expenses include:

Home office (dedicated workspace)
Business equipment and software
Professional development and training
Business-related travel and vehicle use
Health insurance premiums (in many cases)
Retirement plan contributions (SEP-IRA, Solo 401k)

How Much Should You Set Aside?

A common rule of thumb for self-employed individuals is to set aside 25–30% of every payment you receive to cover federal self-employment tax and income tax. Use our free self employment tax calculator regularly as your income changes throughout the year to stay on track.

Self-Employment Tax vs Income Tax

It is important to understand that self-employment tax and federal income tax are separate obligations. Self-employment tax covers Social Security and Medicare. Federal income tax is calculated separately on your taxable income after deductions. You owe both, which is why self-employed individuals often have higher total tax bills than W2 employees at the same income level.