CALCULATOR FLAGSHIP
Free Self-Employment Tax Calculator Online
Self-Employment Tax Calculator estimates what a freelancer, contractor, or 1099 worker owes in US federal self-employment tax and income tax for the 2026 tax year.
1099 Tax CalculatorSelf Employment TaxFreelancer Tax CalculatorQuarterly Tax CalculatorSelf Employed Tax Estimator
Interactive Self-Employment Tax Calculator Workspace
Process your files or inputs directly in your browser. Many workflows run locally; features that need network data or a service are identified on their tool page.
At a glance
Self-Employment Tax Calculator — Self-Employment Tax Calculator estimates what a freelancer, contractor, or 1099 worker owes in US federal self-employment tax and income tax for the 2026 tax year.
Free for the core workflow, no account required. The calculation is performed locally in the browser from the values you enter.
About Self-Employment Tax Calculator
Self-Employment Tax Calculator estimates what a freelancer, contractor, or 1099 worker owes in US federal self-employment tax and income tax for the 2026 tax year.
Self-employed workers pay both halves of Social Security and Medicare — 15.3% on 92.35% of net earnings — plus ordinary federal income tax on profit after the deductible half of SE tax and the standard deduction. The calculator applies the 2026 federal brackets, the Social Security wage base, and the additional Medicare surtax so quarterly estimates stop being a guess. Calculator results depend on the inputs, units, assumptions, formulas and reference date or rate where applicable. Confirm units and assumptions, compare the result with a known example when possible, and verify current external rates or rules.
Primary objective: Estimate US federal self-employment tax and income tax for freelancers and 1099 contractors, including quarterly payments.
Privacy assurance: The calculation is performed locally in the browser from the values you enter.
How to Use Self-Employment Tax Calculator
- Enter net self-employment profit for the year (income minus business expenses).
- Choose a filing status and review the SE tax, income tax, and combined total.
- Divide the total by four for quarterly estimated payments.
- Define the result you need from Self-Employment Tax Calculator before choosing options or entering data.
- Use a small representative input for the first run so you can confirm that the settings match the intended self employment tax calculator workflow.
- Review the result against the original input or expected format before copying, downloading, publishing or sharing it.
Key Use Cases & Applications
- Freelancer quarterly estimates
- 1099 contractor tax planning
- Side-income tax checks
- Use Self-Employment Tax Calculator for estimating a value from known inputs.
- Use Self-Employment Tax Calculator for comparing scenarios before making a decision.
- Use Self-Employment Tax Calculator for checking a calculation without installing dedicated software.
Frequently Asked Questions
What is the self-employment tax rate?
15.3% on 92.35% of net earnings: 12.4% Social Security up to the annual wage base and 2.9% Medicare on all earnings, plus 0.9% additional Medicare above 200,000 dollars for single filers or 250,000 dollars for married filers.
Can I deduct half of self-employment tax?
Yes. One-half of SE tax is deductible from gross income when computing federal income tax, which the calculator applies automatically.
How do quarterly estimated taxes work?
Divide the estimated annual total by four and pay in April, June, September, and January. Underpaying can trigger penalties.
Is my data uploaded?
No. All calculations run locally in the browser.
What should I check before using the Self-Employment Tax Calculator result?
Confirm units and assumptions, compare the result with a known example when possible, and verify current external rates or rules. The result is a mathematical model based on the supplied inputs and assumptions.
Does Self-Employment Tax Calculator replace a professional or authoritative source?
No. Self-Employment Tax Calculator is a practical utility. Where the result affects a regulated, financial, medical, legal or business decision, verify it against the appropriate authoritative source or qualified professional.