Quarterly Tax Calculator
Calculate estimated quarterly tax payments for freelancers and self-employed workers. Covers federal income tax, self-employment tax, and payment deadlines.
Estimated Tax Summary
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Total Estimated Tax
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Self-Employment Tax
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Federal Income Tax
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Quarterly Payment
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Effective Tax Rate
Quarterly Payment Schedule
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About This Estimate
- Self-employment tax is 15.3% on 92.35% of net earnings (12.4% Social Security up to $176,100 + 2.9% Medicare).
- Half of SE tax is deducted from your adjusted gross income before calculating income tax.
- Federal income tax uses 2026 progressive brackets with the standard deduction applied.
- This estimate does not include state taxes. Consult a tax professional for complete planning.
Frequently Asked Questions
Who needs to pay quarterly estimated taxes?▾
Freelancers, self-employed individuals, gig workers, and anyone who expects to owe $1,000 or more in taxes and does not have sufficient withholding from wages must make quarterly estimated payments.
When are quarterly tax payments due?▾
The four quarterly due dates are April 15, June 15, September 15, and January 15 of the following year. If a due date falls on a weekend or holiday, the deadline shifts to the next business day.
What happens if I miss a quarterly payment?▾
The IRS charges an underpayment penalty on missed or late quarterly payments. The penalty is calculated based on the federal short-term interest rate plus 3 percentage points.
Is my financial data safe?▾
Yes. All calculations happen entirely in your browser. No data is ever sent to a server.