Self-Employment Tax Calculator
Estimate 2026 U.S. self-employment tax, Social Security, Medicare, and the deductible half.
Last updated: July 2026
Estimated self-employment tax
$0.00
- Net earnings subject to SE tax: $0.00
- Social Security portion: $0.00
- Medicare portion: $0.00
- Additional Medicare tax: $0.00
- Deductible half: $0.00
On this page
Quick summary: Estimate 2026 U.S. self-employment tax, Social Security, Medicare, and the deductible half. Enter the requested values, calculate, review the result, and compare more than one realistic scenario before making a decision.
Read the complete guide
What this calculator does
The Self-Employment Tax Calculator estimates taxes associated with self-employment earnings under the assumptions represented by the page. It is intended for planning quarterly obligations or comparing gross and net earnings.
How to use the calculator step by step
Enter net self-employment income and any other requested values. Use business profit after allowable business expenses if that is what the calculator expects, rather than total revenue.
How the calculation works
Self-employment tax is commonly based on a percentage of eligible net earnings, with separate components and thresholds depending on the applicable rules.
Worked example and scenario testing
A freelancer with 60,000 of revenue and 20,000 of deductible business expenses generally starts from 40,000 of net profit rather than the full 60,000 when estimating tax tied to self-employment income.
How to interpret your result
The estimate is separate from ordinary income tax and may not equal total tax liability. Quarterly payments can include several tax components.
Accuracy, assumptions, and limitations
Thresholds, deductions, credits, wage-base limits, local taxes, business structure, and tax-law changes can materially affect the official amount.
Common mistakes to avoid
Do not use gross sales as net self-employment income when deductible business expenses have not yet been removed. Also avoid assuming self-employment tax is the only tax due.
Privacy and browser-based calculations
Only general income figures are required. Never enter tax IDs, bank details, or government credentials.