Calculate your self-employment tax including Social Security and Medicare taxes. Estimate quarterly payments, deductions, and total tax burden for freelancers and independent contractors.
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Self-employment tax is the Social Security and Medicare tax paid by individuals who work for themselves. Unlike traditional employees, self-employed individuals pay both the employer and employee portions — totaling 15.3% on the first $176,100 (2025) of net earnings, plus 2.9% Medicare on all earnings above that threshold.
Self-employment tax (SE tax) consists of Social Security tax (12.4%) and Medicare tax (2.9%) for individuals who work for themselves. Traditional employees split these taxes 50/50 with their employer, but self-employed individuals pay the full 15.3%. The IRS allows you to deduct the employer-equivalent half of SE tax when calculating your adjusted gross income. SE tax applies to net self-employment earnings of $400 or more and is calculated on Schedule SE of your tax return.
SE Tax Formula
SE Tax = Net Earnings × 0.9235 × 15.3%The IRS requires quarterly estimated tax payments. Missing these deadlines can result in penalties and interest charges that add up quickly.
Self-employment tax is separate from income tax. Many freelancers are surprised by the combined 15.3% SE tax rate on top of their regular income taxes.
Know exactly how much to set aside each quarter to meet your tax obligations without cash flow surprises.
Calculate the half-SE-tax deduction, QBI deduction, and self-employed health insurance deduction to reduce your overall tax liability.
See how different filing statuses, deductions, and business structures affect your total tax burden.
Understand how SEP-IRA and Solo 401(k) contributions reduce your taxable income and plan your retirement savings strategy.
If you receive 1099-NEC income as a freelancer, consultant, or independent contractor, you must pay SE tax on net earnings over $400.
Rideshare drivers, delivery workers, and gig economy participants who earn more than $400 annually from self-employment.
Business owners who operate as sole proprietors or single-member LLCs report business income on Schedule C and pay SE tax.
Anyone earning self-employment income alongside a regular W-2 job needs to account for SE tax on the self-employment portion.
General partners in partnerships pay SE tax on their distributive share of partnership income.
Compare SE tax liability as a sole proprietor versus an S-Corp election to determine the best business structure.
The self-employment tax rate for 2025 is 15.3% — consisting of 12.4% for Social Security and 2.9% for Medicare. However, this rate applies to 92.35% of your net earnings (not your full income), making the effective rate approximately 14.13%.
You must pay self-employment tax if your net self-employment earnings are $400 or more for the tax year. This applies to freelancers, independent contractors, sole proprietors, and gig economy workers.
The Social Security wage base limit for 2025 is $176,100. You only pay the 12.4% Social Security portion of SE tax on net earnings up to this amount. Medicare tax (2.9%) has no wage base limit and applies to all earnings.
Yes, you can deduct the employer-equivalent portion (50%) of your self-employment tax when calculating your adjusted gross income (AGI). This deduction is taken on Form 1040, not on Schedule SE, and it reduces your income tax but not your SE tax itself.
Quarterly estimated tax payments are due: April 15 (Q1: Jan–Mar), June 15 (Q2: Apr–May), September 15 (Q3: Jun–Aug), and January 15 of the following year (Q4: Sep–Dec). If a due date falls on a weekend or holiday, the deadline moves to the next business day.
An additional 0.9% Medicare tax applies to self-employment earnings that exceed $200,000 for single filers, $250,000 for married filing jointly, or $125,000 for married filing separately. This is on top of the regular 2.9% Medicare tax.
The Qualified Business Income (QBI) deduction allows eligible self-employed individuals to deduct up to 20% of qualified business income. However, QBI only reduces your income tax — it does not reduce self-employment tax.
Yes, you pay SE tax on your self-employment income even if you have a W-2 job. However, if your W-2 wages already exceed the Social Security wage base ($176,100 in 2025), you won't owe the Social Security portion of SE tax — only the Medicare portion.