Freelancer Tax Guide: What Self-Employed Workers Need to Know

Quick answer: Freelancers pay both income tax and self-employment tax (15.3%) on net earnings. Set aside 25-30% of every payment for taxes and make quarterly estimated payments to avoid penalties.

Understanding Self-Employment Tax

When you work as an employee, your employer pays half of your Social Security and Medicare taxes (7.65%), and you pay the other half through payroll withholding. As a freelancer, you're both the employer and the employee, so you pay the full 15.3%.

This breaks down to 12.4% for Social Security (on income up to $168,600 in 2025) and 2.9% for Medicare (no income cap). If your income exceeds $200,000 ($250,000 married filing jointly), you'll also owe an additional 0.9% Medicare surtax.

The good news: you can deduct half of your SE tax from your adjusted gross income. This doesn't reduce your SE tax itself, but it does reduce the income tax you owe. It's an "above-the-line" deduction, meaning you get it even if you don't itemize.

How to Calculate Your Freelance Taxes

Here's the step-by-step process:

1. Calculate net self-employment income: Gross 1099 income minus all business deductions.
2. Calculate SE tax base: Multiply net income by 92.35% (this adjustment accounts for the employer-equivalent portion).
3. Calculate SE tax: Multiply the SE tax base by 15.3%.
4. Calculate the SE tax deduction: Half of your SE tax is deductible from income.
5. Calculate AGI: Add all income sources, subtract the SE tax deduction and other above-the-line deductions.
6. Calculate income tax: Apply your marginal tax rates to taxable income (AGI minus standard/itemized deductions).

Example Calculation

A single freelancer earning $80,000 with $10,000 in business expenses:

• Net SE income: $80,000 - $10,000 = $70,000
• SE tax base: $70,000 × 92.35% = $64,645
• SE tax: $64,645 × 15.3% = $9,891
• SE tax deduction: $9,891 × 50% = $4,946
• AGI: $70,000 - $4,946 = $65,054
• Standard deduction (2025): $15,000
• Taxable income: $65,054 - $15,000 = $50,054
• Federal income tax: ~$6,617
• Total federal tax: $9,891 + $6,617 = $16,508 (23.6% effective rate)

Use our Side Hustle Tax Calculator for an instant calculation tailored to your situation.

Quarterly Estimated Tax Payments

If you expect to owe $1,000 or more in taxes for the year, the IRS requires you to make quarterly estimated payments. Missing these deadlines results in underpayment penalties, essentially interest on what you should have paid.

Safe harbor rule: You can avoid underpayment penalties by paying at least 100% of your prior year's tax liability (110% if your AGI exceeded $150,000) through estimated payments, even if you end up owing more when you file.

Common Freelancer Deductions

Legitimate business expenses reduce your taxable income dollar-for-dollar. Common deductions include:

• Home office: Dedicated space used exclusively for business ($5/sq ft simplified method or actual expenses)
• Equipment: Computer, monitor, desk, chair, camera, microphone
• Software: Creative tools, project management, accounting software
• Internet and phone: Business-use percentage of your bills
• Health  insurance premiums: 100% deductible if you're not eligible for employer coverage
• Retirement contributions: SEP IRA (up to 25% of net earnings), Solo 401(k)
• Professional development: Courses, books, conferences related to your work
• Business travel: Transportation, lodging, 50% of meals during business travel
• Professional services: Accountant, lawyer, virtual assistant fees
• Mileage: 67 cents per mile (2025) for business driving

Tax-Saving Strategies

1. Open a Retirement Account

A SEP IRA lets you contribute up to 25% of net self-employment earnings (max $69,000 for 2025). A Solo 401(k) has similar limits but allows employee contributions too. Both reduce your taxable income significantly.

2. Time Your Income and Expenses

If you expect a higher income year, defer invoicing to January or accelerate deductible expenses into December. If you expect lower income next year, do the opposite. This is called "income smoothing."

3. Consider S-Corp Election

At higher income levels (typically $60,000+), electing S-corp status for your LLC can reduce SE tax. You pay yourself a "reasonable salary" (subject to payroll taxes) and take remaining profits as distributions (not subject to SE tax). Consult a CPA to determine if this makes sense for your situation.

4. Track Every Expense

Use accounting software from day one. Missed deductions are missed savings. Keep receipts for everything over $75, and maintain a mileage log if you drive for business.

State Tax Considerations

Don't forget state income tax! Rates vary from 0% (Texas, Florida, Wyoming, etc.) to over 13% (California). If you work with clients in multiple states, you may have nexus obligations in those states too. This is an area where a tax professional's guidance is especially valuable.