Understanding Self-Employment Tax
When you're self-employed — whether freelancing, running a small business, or doing gig work — you're responsible for taxes that employers normally handle automatically. This guide explains what you owe, when you pay it, and how to plan so you're never caught off guard.
The Self-Employment Tax Rate
Self-employment tax is 15.3% on your first $168,600 of net self-employment income (2024 figure, adjusted annually for inflation). This covers:
- Social Security: 12.4% (capped at the earnings limit)
- Medicare: 2.9% (no earnings cap)
- Additional Medicare: 0.9% (on income over $200,000 single/$250,000 married)
Employees split this 50/50 with their employer — you see 7.65% withheld from your paycheck and your employer pays another 7.65% that you never see. As a self-employed person, you pay both halves.
Silver lining: You can deduct half of your SE tax from your gross income on your federal return. This reduces your income tax — not the SE tax itself — but it meaningfully lowers your total tax bill.
Quarterly Estimated Tax Payments
The IRS requires you to pay taxes as you earn money — not just at the end of the year. If you expect to owe $1,000 or more in federal tax, you must make quarterly estimated payments.
2025 due dates:
- Q1 (Jan–Mar income): April 15
- Q2 (Apr–May income): June 16
- Q3 (Jun–Aug income): September 15
- Q4 (Sep–Dec income): January 15, 2026
Missing these or underpaying results in an underpayment penalty — even if you pay everything you owe by April 15.
How Much to Set Aside
The practical rule: set aside 25–30% of every payment you receive and park it in a separate savings account immediately. Here's what it covers:
| Tax | Approximate Rate |
|---|---|
| Self-employment tax (after ½ deduction) | ~14.1% |
| Federal income tax (22% bracket example) | ~8–15% |
| State income tax (varies) | 0% (TX) – 13% (CA) |
Texas residents have an advantage — no state income tax means 25% is usually enough. Residents of high-tax states should set aside 30–35%.
Key Deductions to Track
Self-employed people can deduct legitimate business expenses, which reduces taxable income and your overall tax bill:
- Home office: Dedicated workspace (simplified method: $5/sq ft, max 300 sq ft)
- Equipment & technology: Computers, phones, cameras — Section 179 allows full deduction in year of purchase
- Software & subscriptions: Any business tool you pay for
- Health insurance premiums: 100% deductible if not eligible for employer coverage through a spouse
- Retirement contributions: SEP-IRA (up to 25% of net SE income), Solo 401(k)
- Half of SE tax: Always deductible from gross income
- Business vehicle mileage: Standard rate per mile driven for business
How to Pay Estimated Taxes
The IRS makes payment straightforward through IRS Direct Pay (free bank transfer) or EFTPS (Electronic Federal Tax Payment System). You can also pay by credit card, though processing fees apply.
Track each payment you make — you'll need these amounts when filing your annual return.