Self-Employment Tax Calculator — Calculate SE Tax and Income Tax — USA 2026
Calculate self-employment tax and estimated quarterly payments for freelancers 1099 contractors and sole proprietors in the United States for 2026.
Self-employed individuals in the US face a unique tax burden: self-employment tax of 15.3% on net earnings (12.4% Social Security + 2.9% Medicare) plus regular federal income tax. Unlike W-2 employees who split Social Security and Medicare with their employer self-employed people pay both halves. However you can deduct half of SE tax from your adjusted gross income and claim legitimate business expenses to reduce your tax bill.
How much tax does a freelancer pay on $100000?
On $100000 net self-employment income: SE tax = $100000 × 92.35% × 15.3% = $14130. Half of SE tax ($7065) is deductible. Federal income tax on $100000 - $7065 - $15700 (standard deduction) = $77235 taxable income. Federal tax approximately $12700. Total federal taxes: approximately $26830 or about 26.8% effective rate. State taxes are additional.
Calculate Now
Self-Employment Tax Calculator
How Tax Calculation Works
Income tax is calculated on your total taxable income after deducting eligible exemptions and deductions from your gross income. The tax is applied progressively — you pay a lower rate on initial income slabs and higher rates only on income that exceeds each threshold. This means moving into a "higher tax bracket" does not mean your entire income is taxed at the higher rate. Understanding marginal vs effective tax rate is crucial: your marginal rate applies only to the last rupee earned, while your effective rate is the average across all slabs.
Tax-Saving Strategies
Under the old regime, maximize deductions: Section 80C allows up to Rs 1.5 lakh through PPF, ELSS, EPF, and life insurance. Section 80D covers health insurance premiums up to Rs 25,000 (Rs 50,000 for senior citizens). Section 80CCD(1B) offers an additional Rs 50,000 deduction for NPS contributions. Home loan interest up to Rs 2 lakh is deductible under Section 24. Under the new regime, the Rs 75,000 standard deduction and lower slab rates may save you more if your total deductions are below Rs 3.75 lakh. Calculate under both regimes before choosing.
Key Information
| Parameter | Details |
|---|---|
| Self-Employment Tax Rate | 15.3% (up to $168600 for SS) |
| Social Security Portion | 12.4% (employee + employer) |
| Medicare Portion | 2.9% (+ 0.9% above $200000) |
| Quarterly Payment Deadlines | Apr 15; Jun 15; Sep 15; Jan 15 |
Calculate your self-employment tax
Get accurate results instantly — 100% free, no signup required
Use Calculator NowFrequently Asked Questions
How much tax does a freelancer pay on $100000?
On $100000 net self-employment income: SE tax = $100000 × 92.35% × 15.3% = $14130. Half of SE tax ($7065) is deductible. Federal income tax on $100000 - $7065 - $15700 (standard deduction) = $77235 taxable income. Federal tax approximately $12700. Total federal taxes: approximately $26830 or about 26.8% effective rate. State taxes are additional.
What business expenses can I deduct?
Common deductible expenses include: home office (simplified method: $5/sq ft up to 300 sq ft = $1500); internet and phone (business percentage)
What are the US federal tax brackets?
The US uses seven progressive tax brackets: 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Your effective tax rate is the average across all brackets, which is always lower than your marginal rate. Standard deduction for 2026 is approximately $15,000 for single filers and $30,000 for married filing jointly.
How can I reduce my US tax bill legally?
Maximize 401(k) or IRA contributions to reduce taxable income. Contribute to an HSA if eligible. Claim the standard or itemized deduction — whichever is higher. Use tax-loss harvesting to offset capital gains. Consider qualified charitable contributions and education credits.
What is the difference between marginal and effective tax rate?
Your marginal rate is the tax on your last dollar earned. Your effective rate is total tax divided by total income — always lower. For example, at $100,000 income, your marginal rate might be 22% but your effective rate is only about 15% because lower brackets are taxed at 10% and 12%.
Related Calculators
More Tax Calculators
Last updated: March 2026