Tax & Income Calculators
Self-Employment Tax Calculator
Estimate self-employment tax on net business profit, including the deductible employer-equivalent portion.
Self-employment tax
$12,717
- Deductible half
- $6,358
- Estimated income tax
- $10,242
- Total tax
- $22,959
How this calculator works
SE tax = net profit × 92.35% × rate; half is deductible against income tax
- 92.35%
- the share of profit subject to self-employment tax
Example calculation
Illustrative example — not advice
Worked example — the self-employment tax calculator as it loads, using the default figures below.
- 01Enter net business profit: $90,000.
- 02Enter self-employment tax rate: 15.3%.
- 03Enter additional deductible expenses: $0.
- 04Read the self-employment tax from the results panel: $12,717.
Self-employment tax: $12,717. Deductible half: $6,358. Estimated income tax: $10,242. Total tax: $22,959.
These figures come straight from the calculator above running on the values listed, so you can retype them and confirm every number yourself. Change any input and the results update immediately. Illustrative only — not a quote, offer or recommendation.
Important considerations
- Quarterly estimated payments are usually required.
- The social security portion stops above an annual earnings ceiling.
Related calculators
- Income Tax CalculatorTax due, marginal rate and effective rate.
- Take-Home Pay CalculatorNet pay after tax and deductions.
- Profit Margin CalculatorGross, operating and net margin from your numbers.
- Employee Cost CalculatorThe fully loaded annual cost of a hire.
- Salary CalculatorSalary converted across every pay period.
- Hourly to Salary CalculatorAnnual salary implied by an hourly rate.
Terms used here
Frequently asked questions
Why is the rate higher than payroll tax?
You pay both the employee and employer halves, though half is deductible against income tax.
Disclaimer
Legamoney calculators are educational tools. Results are estimates based on the figures you enter and do not constitute financial, tax or legal advice.
Last reviewed 2026-08-01