Self-Employment Tax in 2026: A Freelancer's Guide

The rate: 15.3%, in two pieces

Self-employment tax has two components, matching what employees and employers split:

• 12.4% for Social Security, on net earnings up to the annual wage base — $184,500 for 2026
• 2.9% for Medicare, on all net earnings with no cap

Above the wage base, only the 2.9% Medicare piece continues. High earners also owe an additional 0.9% Medicare tax on self-employment income above $200,000 (single) or $250,000 (married filing jointly).

The 92.35% adjustment: you don't pay on every dollar

SE tax applies to 92.35% of your net profit, not 100%. The logic: employees only pay their half of Social Security/Medicare on wages, while the employer's half is never in their taxable pay. The 7.65% haircut (100% − 92.35%) gives self-employed people roughly equivalent treatment.

Net profit itself comes from Schedule C (profit or loss from business): your freelance revenue minus deductible business expenses. You owe SE tax once net earnings reach $400 for the year — even a small side gig counts.

The employer's-half deduction

There is a silver lining: you can deduct one-half of your SE tax from your income when computing your adjusted gross income (AGI). This is an "above-the-line" deduction — you get it whether or not you itemize. It does not reduce the SE tax itself, only the income tax computed on top.

Worked example: $100,000 of freelance net profit (single, no other income).

1. Net earnings subject to SE tax: $100,000 × 92.35% = $92,350
2. Social Security piece: $92,350 × 12.4% = $11,451 (under the $184,500 wage base, so the full amount counts)
3. Medicare piece: $92,350 × 2.9% = $2,678
4. SE tax total: $14,129
5. Deduct half ($7,065) from income: AGI ≈ $92,935
6. Income tax on top (single, 2026 standard deduction $16,100): taxable ≈ $76,835 → roughly $11,900 of federal income tax
7. Combined federal burden: about $26,000, or 26% of the $100,000 profit

Worked example: $220,000 of net profit (single).

1. Net earnings: $220,000 × 92.35% = $203,170
2. Social Security piece: only the first $184,500 counts → $184,500 × 12.4% = $22,878
3. Medicare piece: $203,170 × 2.9% = $5,892
4. Additional Medicare: ($203,170 − $200,000) × 0.9% = $29
5. SE tax total: $28,799 — notice the effective SE rate falls once you pass the wage base

Quarterly estimated payments

Nobody withholds tax from freelance income, so the IRS expects you to pay as you go in four installments: April 15, June 15, September 15, 2026, and January 15, 2027 (for 2026 income). Each payment should cover both your income tax and SE tax for that period. Miss them and you can owe an underpayment penalty even if you pay in full at filing time.

A practical rule: set aside 25–30% of every freelance payment in a separate account the day it arrives. At $100,000 of profit, the example above shows why — roughly a quarter of it belongs to the IRS before you spend a dime.

Reducing the bill, legally

• Track every deductible expense. Home office, mileage, software, health insurance premiums (deductible above the line for the self-employed), and retirement contributions all shrink both income tax and SE tax.
• Contribute to a Solo 401(k) or SEP IRA. For 2026 you can put up to $24,500 of salary deferral into a Solo 401(k), plus employer-side contributions — cutting income tax (though not SE tax, which is computed before these).
• Consider an S corporation at higher incomes. An S-corp lets you split earnings between salary (subject to payroll tax) and distributions (not subject to SE tax). It only pays off once the payroll-tax savings exceed the extra admin costs — typically worth modeling around $80,000–$100,000 of profit with a tax professional.

Record-keeping that survives an audit

The IRS doesn't require perfect books, but it does require contemporaneous records — reconstructions made at tax time carry little weight. For freelancers, the essentials are:

• Separate bank account and card for the business. Commingling personal and business money is the fastest way to lose deductions in an audit.
• Mileage log for business driving (date, destination, purpose, miles). Apps automate this; a notebook works too. Commuting from home to a regular workplace doesn't count.
• Receipts for everything over $75, plus a note on what each expense was for. Digital copies are fine.
• Home office measurements if you claim it: the simplified method gives $5 per square foot up to 300 square feet ($1,500 max), no receipts needed beyond proving the space is used regularly and exclusively for business.

Worked example: the home office at $100,000 profit. Using the simplified method on a 200-square-foot office: $1,000 deduction. That $1,000 reduces both income tax (saving ~$220 in the 22% bracket) and SE tax base (saving ~$141 of SE tax). One measurement, ~$360 back.

When to switch from sole proprietor to S corporation

As a sole proprietor, all your net profit faces SE tax. An S corporation lets you pay yourself a reasonable salary (subject to payroll tax) and take the rest as distributions (not subject to SE/payroll tax). The trade: payroll filings, a separate return (Form 1120-S), and stricter bookkeeping.

Worked example: $160,000 profit. As a sole proprietor: SE base $147,760; SE tax roughly $21,000. As an S-corp with a $90,000 reasonable salary: payroll tax on $90,000 ≈ $13,770 (employer + employee halves combined); the remaining $70,000 distribution faces no payroll/SE tax. Gross savings ≈ $7,200/year against maybe $2,000–$4,000 of extra accounting and payroll costs. The math usually starts working around $80,000–$100,000 of steady profit — and "reasonable salary" must be defensible, not $1.

Don't incorporate on day one for a side gig. Revisit the question each year as profit grows.