If you’re self-employed, you pay both the employer and employee portions of Social Security and Medicare taxes — a combined 15.3%. This is in addition to federal and state income taxes. Understanding how self-employment tax works is crucial for freelancers, contractors, and business owners.
Table of Contents
Self-Employment Tax Rate Breakdown
| Component | Rate | Applies To |
|---|---|---|
| Social Security (employee) | 6.2% | First $168,600 |
| Social Security (employer) | 6.2% | First $168,600 |
| Medicare (employee) | 1.45% | All earnings |
| Medicare (employer) | 1.45% | All earnings |
| Total SE tax | 15.3% | |
| Additional Medicare surtax | 0.9% | Earnings over $200,000 |
When you work for an employer, you split these taxes 50/50. When you’re self-employed, you pay the full 15.3%.
How to Calculate Self-Employment Tax
Step 1: Calculate Net Self-Employment Income
Start with your total self-employment revenue and subtract business expenses.
Example: $120,000 revenue - $20,000 expenses = $100,000 net income
Step 2: Multiply by 92.35%
The IRS only taxes 92.35% of your net self-employment income (to account for the employer-equivalent deduction).
$100,000 × 0.9235 = $92,350 taxable SE income
Step 3: Apply the 15.3% Rate
$92,350 × 0.153 = $14,130 in self-employment tax
Step 4: Claim the Deduction
You deduct 50% of SE tax from your income taxes.
$14,130 × 0.50 = $7,065 deduction on your Form 1040
Self-Employment Tax by Income Level
| Net SE Income | SE Tax | 50% Deduction | Effective SE Rate |
|---|---|---|---|
| $25,000 | $3,532 | $1,766 | 14.1% |
| $50,000 | $7,065 | $3,532 | 14.1% |
| $75,000 | $10,597 | $5,299 | 14.1% |
| $100,000 | $14,130 | $7,065 | 14.1% |
| $150,000 | $19,955 | $9,978 | 13.3% |
| $168,600+ | $21,068 | $10,534 | Declines (SS caps) |
| $200,000 | $23,733 | $11,867 | 11.9% |
| $300,000 | $27,462 | $13,731 | 9.2% |
The effective rate declines at higher incomes because the Social Security portion caps at $168,600. Only the 2.9% Medicare tax (plus 0.9% surtax above $200,000) continues on income above the cap.
Who Must Pay Self-Employment Tax
You must file Schedule SE and pay self-employment tax if:
- Your net self-employment earnings are $400 or more per year
- You operate as a sole proprietor, independent contractor, freelancer, or single-member LLC
- You are a partner in a partnership
- You earn income from gig platforms (Uber, DoorDash, Etsy, etc.)
- You have farming income
Who does NOT pay SE tax:
- W-2 employees (FICA is withheld by employer)
- S-Corp owners on salary distributions (only wages are subject to FICA)
- Passive income earners (rental income, investment income)
- Limited partners (with exceptions)
Strategies to Reduce Self-Employment Tax
1. Maximize Business Deductions
Every legitimate business expense reduces your net self-employment income, which reduces SE tax. Common deductions:
- Home office
- Vehicle/mileage (67¢/mile in 2026)
- Equipment and supplies
- Software subscriptions
- Professional development
- Health insurance premiums (100% deductible for self-employed)
2. Contribute to Retirement Accounts
- Solo 401(k): Contribute up to $23,500 as employee + 25% of net SE income as employer (total cap $69,000)
- SEP IRA: Contribute up to 25% of net self-employment income (max $69,000)
- These reduce your income tax, though not your SE tax directly.
3. Elect S-Corp Status
An S-Corp election allows you to split income between a “reasonable salary” (subject to FICA) and distributions (not subject to FICA). This can save thousands in SE tax.
Example: $150,000 net income
- Without S-Corp: $19,955 in SE tax
- With S-Corp ($80,000 salary + $70,000 distribution): ~$12,240 in FICA
- Savings: ~$7,700/year
The IRS requires the salary to be “reasonable” for your industry and role.
4. Hire Family Members
Hiring your spouse or children (under 18) in a sole proprietorship can shift income and reduce your SE tax burden.
5. Time Income and Expenses
Accelerating expenses into the current year or deferring income to the next year can smooth out your tax burden.
Quarterly Estimated Tax Payments
Self-employed individuals must pay estimated taxes quarterly to avoid penalties:
| Quarter | Period | Due Date |
|---|---|---|
| Q1 | Jan 1 – Mar 31 | April 15 |
| Q2 | Apr 1 – May 31 | June 16 |
| Q3 | Jun 1 – Aug 31 | September 15 |
| Q4 | Sep 1 – Dec 31 | January 15 (next year) |
Use Form 1040-ES to calculate and pay quarterly estimates. You must pay at least 90% of your current year tax or 100% of your prior year tax (110% if AGI > $150,000) to avoid underpayment penalties.
Self-Employment Tax vs. Income Tax
Self-employment tax and income tax are separate obligations:
| Self-Employment Tax | Income Tax | |
|---|---|---|
| Rate | 15.3% | 10% – 37% |
| What it funds | Social Security & Medicare | Federal government operations |
| Calculated on | 92.35% of net SE income | Taxable income after deductions |
| Deductible | 50% deductible from income | N/A |
A self-employed person earning $100,000 might pay $14,130 in SE tax plus $10,000-$15,000 in federal income tax — a combined effective rate of 24-29%.
Related: Federal Income Tax Brackets | Tax Deductions and Credits | Income Percentile Calculator
