Self-Employment Tax for Freelancers: What You Owe and How to Reduce It
What Is Self-Employment Tax?
When you work as an employee, your employer pays half of your Social Security and Medicare taxes (collectively called FICA taxes), and you pay the other half through payroll withholding. When you're self-employed — as a freelancer, independent contractor, sole proprietor, or gig worker — there is no employer. You are responsible for both halves.
This combined obligation is called self-employment (SE) tax.
The 2025 SE Tax Rate
For tax year 2025, the SE tax rate is 15.3%, composed of:
| Component | Rate | Applies To |
|---|---|---|
| Social Security | 12.4% | First $176,100 of net SE income |
| Medicare | 2.9% | All net SE income |
| Additional Medicare | 0.9% | Net SE income above $200,000 (single) |
The Social Security wage base for 2025 is $176,100. Income above that threshold is not subject to the 12.4% Social Security portion, though Medicare (2.9%) continues on all earnings.
How SE Tax Is Calculated
SE tax is based on your net self-employment income, not gross revenue. The IRS allows you to deduct ordinary business expenses first, reducing the base on which SE tax is calculated.
Step 1 — Calculate net SE income:
Net SE Income = Gross Revenue − Business Expenses
Step 2 — Apply the 92.35% adjustment:
The IRS multiplies net SE income by 92.35% before applying the 15.3% rate. This reflects the fact that employees do not pay FICA on the employer's share.
SE Tax Base = Net SE Income × 0.9235
Step 3 — Apply the rate:
SE Tax = SE Tax Base × 0.153
Worked Example
A freelance designer earns $70,000 in revenue and has $10,000 in deductible business expenses.
- Net SE income: $70,000 − $10,000 = $60,000
- SE tax base: $60,000 × 0.9235 = $55,410
- SE tax: $55,410 × 0.153 = $8,478
The Half-SE-Tax Deduction
The IRS allows self-employed individuals to deduct half of their SE tax from gross income when calculating adjusted gross income (AGI). This mirrors the treatment of employees, whose employers deduct their share as a business expense.
In the example above:
SE Tax Deduction = $8,478 ÷ 2 = $4,239
This $4,239 is deducted on Schedule 1, Line 15, reducing your taxable income for federal income tax purposes. It does not reduce the SE tax itself.
Quarterly Estimated Payments
Self-employed individuals generally do not have taxes withheld at the source. If you expect to owe $1,000 or more in taxes for the year (including both SE tax and income tax), you are required to make quarterly estimated tax payments.
Missing or underpaying estimated taxes can result in an underpayment penalty. See our article on Quarterly Estimated Taxes for due dates and calculation methods.
Strategies to Reduce SE Tax
1. Maximize Business Deductions
Every legitimate business expense — home office, equipment, professional development, business travel — reduces your net SE income and therefore your SE tax base.
2. Home Office Deduction
If you use part of your home exclusively and regularly for business, you may deduct home office expenses. See Home Office Deduction.
3. S-Corp Election
Once SE income is consistently above ~$40,000–$50,000/year, some freelancers elect S-corp status. As an S-corp, you pay yourself a reasonable salary (subject to payroll taxes) and take additional profit as distributions (not subject to SE tax). This strategy has setup costs and requires an accountant to implement correctly.
4. Self-Employed Health Insurance Deduction
Self-employed individuals can deduct 100% of health insurance premiums paid for themselves and their families from gross income. This reduces AGI but does not reduce SE tax directly.
Use the Self-Employment Tax Calculator to estimate your SE tax and income tax for the 2025 tax year.
FAQ
What is the self-employment tax rate in 2025?
The self-employment tax rate is 15.3% on net self-employment income. This breaks down as 12.4% for Social Security (on earnings up to $176,100) and 2.9% for Medicare (on all net earnings). High earners may also owe an additional 0.9% Medicare surtax on earnings above $200,000.
Can I deduct self-employment tax from my income taxes?
Yes. The IRS allows you to deduct half of your self-employment tax (the employer-equivalent portion) when calculating your adjusted gross income (AGI). This deduction is taken on Schedule 1 of Form 1040 and reduces your federal income tax, though it does not reduce the SE tax itself.