How is self-employment tax calculated?

SE tax is 15.3% (12.4% Social Security up to the annual wage base + 2.9% Medicare) applied to 92.35% of your net self-employment profit. Half of it is deductible against your income tax.

When are quarterly estimated taxes due?

April 15, June 15, September 15, and January 15 of the following year.

It's an estimate: it assumes the standard deduction, the simple 20% QBI deduction, and no other income or credits. Your state rate is entered as a flat percentage. Talk to a tax professional for filing.

Self-employed tax calculator

Estimate your self-employment tax, federal income tax, and quarterly payments in seconds. Free, private, and calculated in your browser.

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