Self-Employment Tax Calculator

This calculator starts with annual net self-employment income and applies a simplified self-employment tax framework. It uses 92.35% of net earnings as the working tax base, then estimates the Social Security and Medicare portions that commonly make up self-employment tax.

It does not attempt to calculate your full return. For the broader context, pair this tool with the self-employment tax guide and how to calculate federal income tax.

The total self-employment tax estimate helps you see the extra layer that often surprises freelancers and contractors. The deductible half result is included because many people hear that concept before they understand where it fits in the return.

This is why the tool works best as a reserve-planning aid. It shows why net business income can produce a different tax feel than W-2 wages, even before the ordinary federal income tax calculation is finished.

This estimate does not include every real-world wrinkle. It does not handle entity-specific rules, Additional Medicare Tax, wage-base interactions with outside employment, state taxes, or specialized business circumstances.

The result is an educational estimate only. If you are filing for a real business, use this as a planning checkpoint and not as a final tax position.

Use this calculator when you are freelancing, contracting, or earning side-gig income and want a quick sense of how much of your net income may need to be set aside. It is especially useful before you build a reserve habit or compare contractor income to W-2 income.

Strong companion reads are the tax hub, common tax filing mistakes, tax refund calculator guide, what adjusted gross income is, taxable income vs. gross income, and federal income tax brackets if you are comparing multiple layers of tax.