💼 Self-Employment Tax Calculators

Freelancer, contractor and self-employment tax calculators. 12 calculators updated for 2025.

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United States

Calculate SE tax (Social Security + Medicare) on self-employment income. Deductible half included.

Calculate federal, state and self-employment tax on 1099 contractor income.

Calculate quarterly estimated tax payments (Form 1040-ES) to avoid underpayment penalties.

Calculate total taxes for freelancers including income tax, SE tax and estimated payments.

Calculate taxes for Uber, DoorDash, Instacart and other gig workers. Track deductible mileage.

Estimate your Schedule C (Profit or Loss from Business) and resulting tax liability.

Calculate your home office tax deduction using simplified or regular method.

Calculate your business mileage deduction at the current IRS rate of $0.70/mile.

Compare SEP IRA, Solo 401k and SIMPLE IRA contribution limits and tax savings.

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Calculate income tax and Class 2/4 NI contributions for sole traders and self-employed.

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Calculate income tax and CPP contributions for self-employed Canadians.

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Calculate income tax, Medicare levy and GST obligations for Australian sole traders.