Self-employment tax calculator
Estimate self-employment tax and quarterly estimated payments for 1099 income.
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Self-employment tax
SE tax is 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of net SE earnings, with Social Security limited by the annual wage base. You can deduct half of SE tax. Quarterly estimates help avoid underpayment penalties — use IRS Form 1040-ES logic as a guide.