Effective Tax Rate for Self-Employed: SE Tax, Deductions, and Calculator
If you're self-employed, your tax situation is more complex than a W-2 employee's. You pay both income tax and self-employment (FICA) tax — but you also have access to powerful deductions that can significantly reduce your bill.
What Is Self-Employment Tax?
W-2 employees split FICA taxes with their employer: 7.65% each for Social Security (6.2%) and Medicare (1.45%). Self-employed people pay both halves — the full 15.3%.
| Component | Rate | Income Cap (2026) |
|---|---|---|
| Social Security | 12.4% | $176,100 |
| Medicare | 2.9% | No cap |
| Additional Medicare | 0.9% | Above $200K (single) |
| Total SE Tax | 15.3% | Applied to 92.35% of net earnings |
Note: SE tax applies to 92.35% of net self-employment income (you deduct the "employer half" before calculation). You can then deduct 50% of the SE tax from gross income.
Total Tax Burden: SE Tax + Income Tax (2026)
Key Deductions for the Self-Employed
Deduct 50% of your SE tax as an above-the-line deduction on Schedule 1. This reduces your AGI, not just your itemised deductions.
Premiums for health, dental, and long-term care insurance for you, your spouse, and dependents are fully deductible above-the-line.
You can contribute up to 25% of net self-employment income to a SEP-IRA (up to $70,000 in 2026). Solo 401(k) allows employee + employer contributions.
If you use part of your home exclusively and regularly for business, you can deduct the proportional share of rent/mortgage, utilities, and insurance.
Deduct up to 20% of qualified business income if your income is below $197,300 (single, 2026). Reduces taxable income without affecting SE tax.
Equipment, software, subscriptions, professional development, travel, and other ordinary and necessary business expenses are all deductible.
Quarterly Estimated Tax Payments
Self-employed people must pay estimated taxes quarterly if they expect to owe more than $1,000. Missing payments results in underpayment penalties.
| Quarter | Income Period | Due Date |
|---|---|---|
| Q1 | January 1 – March 31 | April 15, 2026 |
| Q2 | April 1 – May 31 | June 16, 2026 |
| Q3 | June 1 – August 31 | September 15, 2026 |
| Q4 | September 1 – December 31 | January 15, 2027 |
Safe harbour: pay at least 100% of prior year's tax (110% if income over $150K) to avoid penalties, even if you end up owing more.
Frequently Asked Questions
What is the effective tax rate for self-employed people?
Self-employed people pay federal income tax plus 15.3% self-employment (SE) tax on net self-employment income (up to $176,100 for Social Security; Medicare continues above that). Combined, a self-employed person earning $75,000 net might have a total effective tax rate of 25–28%, versus 13–15% for a W-2 employee at the same income.
Can self-employed people deduct the SE tax?
Yes — you can deduct half of your self-employment tax from gross income (not just as an itemized deduction, but as an above-the-line deduction). This reduces your adjusted gross income, which then reduces your federal income tax. The deduction is calculated on Schedule SE.
What is the QBI deduction and how does it help the self-employed?
The Qualified Business Income (QBI) deduction allows eligible self-employed taxpayers and pass-through business owners to deduct up to 20% of qualified business income. This can significantly reduce taxable income. It phases out for higher incomes and has limitations for certain service businesses (SSTB) above $197,300 (single) in 2026.