2025 Tax Brackets
🔒 No Data Stored
Instant Results
📱 Mobile Friendly
🆓 Free to Use
Advertisement728×90 Leaderboard AdSense Unit
📅 Updated for 2025 Tax Year

Self-Employment Tax Calculator — 2025

Calculate your complete tax burden as a freelancer, contractor, or gig worker. Includes the 15.3% self-employment tax, federal income tax, the SE tax deduction, and your quarterly estimated payment amount.

🧾

Self-Employment Tax Calculator

🧾 Self-Employment Tax Breakdown

Self-Employment Tax
Federal Income Tax
Total Tax Owed
SE Tax Breakdown
Gross SE Income
Business Expenses
Net SE Income
SE Tax Base (92.35%)
Social Security (12.4%)
Medicare (2.9%)
SE Tax Deduction (½ of SE tax)
Federal Income Tax
Effective Tax Rate
Quarterly Payment
Advertisement300×600 Sidebar AdSense Unit

How Self-Employment Tax Works

Unlike regular employees who split FICA taxes with their employer (each paying 7.65%), self-employed individuals pay the full 15.3% themselves. However, you get two important tax breaks to compensate:

92.35% Factor

SE tax is calculated on only 92.35% of net income — equivalent to what employees pay on (since employers don't "pay" FICA on their share of SE income).

SE Tax Deduction

You can deduct 50% of your SE tax from gross income before calculating federal income tax — similar to how employers deduct their FICA share as a business expense.

Business Expenses

All legitimate business expenses reduce your net SE income before any taxes are calculated — lowering both SE tax and income tax simultaneously.

Retirement Savings

SEP-IRA contributions (up to $70,000/year) reduce federal income tax but not SE tax. They're still one of the most powerful tax reduction tools available.

SE Tax Rates vs. Employee FICA — Side by Side

TaxEmployeeEmployerSelf-Employed
Social Security6.2%6.2%12.4% (on 92.35% of net)
Medicare1.45%1.45%2.9% (on 92.35% of net)
Total FICA/SE Tax7.65%7.65%15.3%
Effective Rate on Gross7.65%7.65%~14.13% (15.3% × 92.35%)

Frequently Asked Questions

The self-employment (SE) tax rate is 15.3% — consisting of 12.4% Social Security and 2.9% Medicare. However, SE tax is calculated on 92.35% of your net self-employment income (not the full amount), because employees only pay half the FICA rate. The 92.35% factor mirrors the employer's share that employees don't pay.
Calculate SE tax: (1) Find net SE income (gross self-employment income minus business expenses). (2) Multiply by 0.9235 to get the SE tax base. (3) Multiply by 15.3% for the combined SS + Medicare rate. (4) Deduct half the SE tax from your income before calculating federal income tax — this is the 'SE tax deduction.'
Yes. Legitimate business expenses reduce your net self-employment income before calculating SE tax and federal income tax. Common deductions include home office, vehicle mileage (67 cents/mile in 2025), business equipment, software subscriptions, professional services, health insurance premiums, and retirement contributions (SEP-IRA, Solo 401k).
Yes, if you expect to owe $1,000 or more in federal taxes for the year, you must make quarterly estimated payments. Deadlines are April 15, June 15, September 15, and January 15. Underpayment can result in IRS penalties. Use your prior year tax as a safe harbor (pay 100% of last year's tax) or pay 90% of current year estimate.
The IRS allows self-employed individuals to deduct half their SE tax from their gross income when calculating federal income tax. This is because employers deduct their share of FICA from business income. On a $50,000 net SE income with $7,065 SE tax, you'd deduct $3,532.50 before calculating income tax.
Self-employment tax is specifically for Social Security and Medicare — the 15.3% FICA tax that employees split with employers. Income tax is calculated separately based on taxable income minus deductions. As a self-employed individual, you pay both: SE tax (15.3% on 92.35% of net income) plus federal income tax (10-37% on taxable income after deductions).
Contributing to a SEP-IRA (up to 25% of net SE income, max $70,000 in 2025) or a Solo 401(k) (up to $23,500 employee + 25% employer contribution in 2025) reduces your taxable income for federal income tax purposes. However, these contributions do not reduce your net SE income for SE tax calculation purposes.
Self-employed individuals can deduct 100% of health, dental, and long-term care insurance premiums paid for themselves, their spouse, and dependents as an above-the-line deduction. This reduces your adjusted gross income for federal income tax but does not reduce your SE tax base.

More Free Tax Calculators