US Federal Income Tax Calculator (Single Filer)
US Federal Income Tax Bracket Calculator (2024)
Calculate progressive 2024 US Federal Income Tax across all 7 tax brackets with standard deduction, effective tax rate, and net after-tax income.
W-2 wages, self-employment earnings, or total annual taxable revenue
Determines statutory standard deduction and tax bracket boundaries
Optional additional adjustments (e.g. IRA, HSA, or excess itemized deductions above standard)
Federal Tax Liability Summary
Effective Tax Rate: 13.84% | Marginal Bracket: 22%
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About US Federal Income Tax Calculator (Single Filer)
Calculate your progressive federal income tax liability as an individual single filer. Evaluates all 7 IRS tax brackets (10%, 12%, 22%, 24%, 32%, 35%, 37%), applies the standard deduction ($14,600 for 2024), and computes your effective vs marginal tax rates.
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Frequently Asked Questions: US Federal Income Tax Calculator (Single Filer)
Clear mathematical answers to key questions, calculations, and loan parameters.
What is the standard deduction for a single filer in 2024?
The IRS standard deduction for single filers in tax year 2024 is $14,600, up from $13,850 in 2023.
What tax bracket does a $100k single filer fall into?
A single filer making $100,000 with the standard deduction has $85,400 in taxable income, placing them in the 22% marginal tax bracket ($47,151 to $100,525).
What is the difference between marginal and effective tax rate?
The marginal tax rate is the percentage paid on the last dollar of income (22% for $100k), whereas the effective tax rate is total tax divided by total gross income (approx 13.89%).