Self-Employment Tax Calculator (2025)

What is self-employment tax?

Self-employment tax is the Social Security and Medicare tax paid by people who work for themselves. When you are a regular employee, your employer withholds Social Security and Medicare from each paycheck and pays a matching share on your behalf. When you are self-employed, you are both the employer and the employee, so you cover both halves yourself. That combined rate is 15.3 percent, and it is completely separate from the federal income tax you also owe on your profit.

Almost anyone with net self-employment earnings of 400 dollars or more in a year owes this tax. That includes freelancers, independent contractors, gig and rideshare drivers, online sellers, single-member LLC owners, and people running a side hustle who file a Schedule C. Use the self-employment tax calculator above to see your number in seconds, then read on to understand exactly how it works for the 2025 tax year.

How self-employment tax is calculated in 2025

The tax is not applied to your entire profit. First you multiply your net profit by 92.35 percent to find your taxable self-employment earnings. This adjustment mirrors the employer-side payroll tax that an employee would not be taxed on. The 15.3 percent rate then splits into two pieces:

• Social Security, 12.4 percent. Applied only up to the annual wage base, which is 176,100 dollars for 2025. Earnings above that cap are not subject to the Social Security portion.
• Medicare, 2.9 percent. Applied to all of your taxable self-employment earnings, with no upper limit.

High earners also pay an Additional Medicare Tax of 0.9 percent on earnings above 200,000 dollars for single filers, or 250,000 dollars for married couples filing jointly. One valuable break works in your favor: you can deduct half of your self-employment tax from your income when figuring federal income tax. The calculator above shows that deductible half so you can see the full picture.

A quick example

Say your net profit for the year is 60,000 dollars. Your taxable base is 60,000 multiplied by 0.9235, which is 55,410 dollars. The Social Security portion is 55,410 at 12.4 percent, about 6,871 dollars. The Medicare portion is 55,410 at 2.9 percent, about 1,607 dollars. Your total self-employment tax is roughly 8,478 dollars, and about 4,239 dollars of that is deductible against your income tax.

The 2025 self-employment tax rate

The headline self-employment tax rate is 15.3 percent for 2025, unchanged from recent years. What does change annually is the Social Security wage base, which rose to 176,100 dollars for 2025. If your net earnings fall below that cap, the full 15.3 percent applies to your taxable base. If your earnings rise above it, only the 2.9 percent Medicare portion applies to the amount over the cap, because the Social Security piece stops at the wage base.

Who has to pay self-employment tax?

You generally owe self-employment tax once your net earnings from self-employment reach 400 dollars for the year. This holds whether the work is full-time or a weekend side gig, and whether or not a client sent you a tax form. Common examples include:

• Freelancers, consultants, and coaches
• Rideshare and delivery drivers
• Online sellers and content creators
• Tradespeople and independent contractors
• Real estate agents and other commission earners

Even if a client did not issue a 1099, the income is still taxable and still counts toward your self-employment tax. The IRS expects you to report all business income on Schedule C.

How to reduce your self-employment tax

Because the tax is based on net profit, the single most reliable way to lower it is to claim every legitimate business expense. Each dollar of deductible expense reduces the profit that the 15.3 percent is applied to. Frequently missed deductions include home office costs, software and subscriptions, mileage and vehicle expenses, supplies, the business share of phone and internet, advertising, and professional services. This is exactly why organized records matter, and where NeoReceipt helps by scanning each receipt and sorting it into the right Schedule C category automatically.

Beyond tracking expenses, some self-employed people lower their tax by contributing to a retirement plan such as a SEP IRA or a solo 401(k). At higher income levels, electing S corporation status can split income between a reasonable salary and distributions, which may reduce the earnings subject to self-employment tax. These are larger decisions worth reviewing with a tax professional.

How to file and pay

Self-employment tax is reported on Schedule SE, filed with your Form 1040, while your business income and expenses go on Schedule C. Because no tax is withheld from self-employment income, the IRS generally expects quarterly estimated tax payments across the year, due in mid-April, mid-June, mid-September, and mid-January. If you expect to owe 1,000 dollars or more, making those quarterly payments helps you avoid underpayment penalties at filing time.

Self-employment tax versus income tax

It is easy to confuse the two, but they are separate obligations. Self-employment tax funds Social Security and Medicare and is a flat 15.3 percent on your taxable earnings. Federal income tax is charged at graduated rates based on your total taxable income and filing status. Most self-employed people owe both. To estimate the combined bill, use our 1099 tax calculator, which layers federal income tax on top of self-employment tax.

Common mistakes to avoid

• Assuming income without a 1099 is not taxable. It still is.
• Not setting money aside during the year, then facing a large bill in April.
• Missing deductions because receipts were lost or never recorded.
• Skipping quarterly estimated payments and getting hit with penalties.

Tracking expenses all year and estimating your tax early are the two simplest habits that prevent tax-season surprises. Run your figures with the calculator above, then let NeoReceipt capture the receipts that lower your net profit.