🧾 Freelancer Tax: Calculator

Estimate your US self-employment tax and quarterly estimated payments.

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QUARTERLY ESTIMATED PAYMENT
$0
suggested payment per quarter (1/4 of total)
Net Earnings
$0
Self-Employment Tax (15.3%)
$0
Est. Income Tax
$0
Total Estimated Tax
$0
Simplified flat-rate estimate — see notes below.

How the Freelancer Tax Calculator Works

Freelancers and independent contractors in the US owe two separate types of federal tax: self-employment (SE) tax, which covers Social Security and Medicare contributions normally split between an employer and employee, and regular federal income tax on your net profit. This calculator estimates both so you can plan quarterly estimated tax payments and avoid an underpayment penalty.

Net Earnings = Gross Income − Business Expenses
SE Taxable Earnings = Net Earnings × 92.35%
Self-Employment Tax = SE Taxable Earnings × 15.3%
Income Tax Estimate = (Net Earnings − ½ SE Tax − Standard Deduction) × Marginal Bracket %
Total Estimated Tax = SE Tax + Income Tax Estimate

Why 92.35% and 15.3%?

The IRS lets self-employed workers reduce their SE-taxable earnings by 7.65% (to 92.35% of net earnings) to roughly mirror how an employer's share of payroll tax isn't counted as employee income. The 15.3% rate combines the 12.4% Social Security tax and 2.9% Medicare tax that an employee and employer would normally split 7.65% each — as a freelancer, you pay both halves yourself. This calculator assumes your net earnings stay under the annual Social Security wage base ($168,600 for 2024, adjusted annually), above which the Social Security portion stops applying, so high earners may see a lower actual rate than this tool estimates.

An Important Simplification on Income Tax

The income tax portion of this calculator uses your selected marginal bracket as a flat rate applied to your full taxable amount, rather than modeling the actual progressive bracket structure where only income above each threshold is taxed at the higher rate. This makes it a rough, conservative estimate rather than an exact calculation — for precise quarterly payment amounts, use the IRS's Form 1040-ES worksheet or consult a tax professional or CPA.

📎 Related Tools: Income Tax Calculator Salary Calculator Budget Calculator Savings Calculator

❓ Frequently Asked Questions

Why do freelancers pay a 15.3% self-employment tax?
As a self-employed person, you're responsible for both the employee and employer portions of Social Security (12.4%) and Medicare (2.9%) taxes, which a traditional employer would otherwise split with you — together these equal 15.3%.
Can I deduct half of my self-employment tax?
Yes. The IRS allows you to deduct half of your self-employment tax from your net earnings when calculating your income tax, which this calculator accounts for in the income tax estimate step.
Why does this calculator use a flat percentage instead of real tax brackets?
Real US federal income tax uses progressive brackets, where only income above each threshold is taxed at the higher rate. This calculator simplifies that into a single flat-rate estimate for ease of use — actual tax owed calculated via real bracket math will typically be somewhat lower than this estimate.
What happens if my net earnings exceed the Social Security wage base?
Once net earnings surpass the annual Social Security wage base, the 12.4% Social Security portion stops applying to income above that threshold (though the 2.9% Medicare portion continues, and can increase with an Additional Medicare Tax for high earners). This calculator assumes earnings stay under that threshold, disclosed above.
How often should I make estimated tax payments as a freelancer?
The IRS generally expects self-employed individuals to make quarterly estimated payments (typically due in April, June, September, and January) if they expect to owe $1,000 or more in tax for the year, to avoid an underpayment penalty.

🏆 About This Tool — Accuracy & Trust

🔒 Data Privacy: All calculations run entirely within your browser using JavaScript. Nothing you enter here is ever transmitted to our servers, stored, sold, or shared.

📐 Accuracy Note: This tool uses standard, widely published formulas and guidelines. Results are estimates for informational purposes; for financial, medical, or engineering decisions, consult a licensed professional.

📅 Last Updated: September 2026.