ΣBenefitMath

FederalSame rules in every state

Self-Employment Tax Calculator

For 1099, gig and freelance work: see your self-employment tax, your income tax, and how much to set aside.

This is a federal tool for tax year 2026. Oregon also taxes this income; Washington has no income tax.

Your work
What you earned minus business costs, like mileage, supplies and app fees.
From a W-2 job, if you have one. Leave blank if not.
Leave blank if none.

Example numbers are filled in. Replace them with yours.

Common questions

What is self-employment tax?

It's Social Security and Medicare tax for people who work for themselves. An employer normally pays half; when you are self-employed you pay both halves: 15.3% on 92.35% of your profit.

Do I owe it if I made a little?

Only if your self-employment profit is $400 or more for the year. You may still owe income tax on smaller amounts.

Do I need to pay quarterly?

If you expect to owe $1,000 or more when you file, the IRS wants payments during the year. For 2026 income they are due April 15, June 15 and September 15, 2026, and January 15, 2027. You can pay at irs.gov/payments.

Can I avoid quarterly payments?

If you also have a regular job, you can have more tax taken out of your paycheck instead. Use a new W-4, Step 4(c).

What is the QBI deduction?

Most self-employed people can deduct up to 20% of their business profit from income tax (not from self-employment tax). This calculator includes it if your taxable income is under $201,750 ($403,500 married filing jointly).