US Federal Quarterly Tax Calculator
Estimate your 2025 federal quarterly estimated tax payments. Built for freelancers, consultants, and anyone with self-employment (1099) income.
Enter Your Income Details
Your 2025 Federal Tax Estimate
Quarterly Payment Schedule
| Quarter | Due Date | Payment |
|---|
Dates can vary by year. Verify at irs.gov.
Includes
- 2025 federal income tax brackets
- Standard deduction
- Self-employment (SE) tax
- 50% SE tax deduction
- 401(k) / IRA / HSA above-the-line deductions
Excludes
- State taxes
- Tax credits of any kind
- Itemized deductions
- Alternative Minimum Tax (AMT)
- Additional Medicare Tax (0.9%)
- Special situations / phase-outs
What This Calculator Does
This calculator estimates your 2025 US federal quarterly tax payments using your net self-employment profit, filing status, optional W-2 wages, expected federal withholding, and optional above-the-line retirement and HSA deductions. It combines estimated federal income tax with self-employment tax, subtracts expected withholding, and divides the remaining estimated amount due into four equal quarterly payments.
Calculation Methodology
The calculator first estimates self-employment tax by multiplying net profit by 0.9235 to get the SE tax base, then applying 12.4% Social Security tax up to the annual wage base and 2.9% Medicare tax on the remaining SE base. It then calculates the deductible half of SE tax, subtracts that deduction along with optional retirement and HSA contributions from total income to estimate adjusted gross income, applies the standard deduction for the selected filing status, estimates 2025 federal income tax from the remaining taxable income using federal brackets, adds income tax and SE tax together, subtracts expected federal withholding, and divides the remaining estimated amount due by four to show equal quarterly payment estimates.
Estimates only. This tool does not constitute tax advice. Verify all figures with official IRS sources or a qualified tax professional before making payments.