Self-Employment Tax Calculator

Estimate the Social Security, Medicare, and Additional Medicare pieces of 2026 self-employment tax, including the effect of W-2 wages on the Social Security wage base.

Annual net self-employment income

Filing status

W-2 Social Security wages

W-2 Medicare wages

The model applies 92.35% to net earnings, the 2026 $184,500 Social Security wage base, and the filing-status Additional Medicare threshold. It does not calculate federal income tax.

Estimated taxable base

Social Security portion

Medicare portion

Additional Medicare portion

Estimated self-employment tax

Potential deductible half

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