USA Federal Income Tax Calculator (Single Filer)
Enter your gross annual income to estimate your federal income tax using 2025 tax brackets and the standard deduction, for a single filer.
Reflects Tax Year 2025 rates (effective 2025-01-01).
Last checked 2026-09-11 · v1. Tax rules change — verify against an official source before relying on this for a filing.
Source.
USA Federal Income Tax Calculator (Single Filer)
Estimate your 2025 US federal income tax liability as a single filer.
This is an estimate for general informational purposes only, not tax advice. It covers federal income tax for a single filer only — it does not include state income tax, FICA (Social Security/Medicare), tax credits, or itemized deductions.
This calculator uses the 2025 tax year federal income tax brackets for single filers, along with the standard deduction. It does not include state income tax, credits, or itemized deductions — actual tax liability can differ.
Example
- With the default values shown above, this calculator returns: Taxable Income ≈ $65000.00; Federal Income Tax ≈ $9214.00; Effective Tax Rate ≈ 11.52%.
Frequently Asked Questions
Does this include state income tax?
No, this calculator covers federal income tax only. State income tax rules vary widely (some states have none).
What if I don't file as single?
Married filing jointly, married filing separately and head of household each have different bracket thresholds — this calculator only covers the single filing status.