Calculate annual federal income tax liability, effective tax rate, and net take-home pay with our free Income Tax Calculator. Model Single, Married Jointly, or Head of Household status with standard/itemized deductions across progressive tax brackets with 100% offline privacy.
Choose Single, Married Jointly, or Head of Household status and enter your gross annual salary.
Adjust standard filing deduction presets or enter additional pre-tax itemized deductions.
Instantly review estimated federal tax, effective tax rate, marginal bracket split, and monthly take-home pay.
Your salary and financial data are processed entirely inside your browser using client-side JavaScript. Nothing ever travels over a network to any server — making BunchTool 100% private.
Calculations run locally in real time as you adjust numbers. Tax liabilities, net take-home pay, and effective rates update instantly without page reloads.
Provides a clear, stacked visual gauge showing exactly how much of your taxable income falls into each federal tax bracket.
Federal Income Tax operates on a progressive tax bracket system, meaning higher portions of taxable income are taxed at progressively higher percentage rates.
The key tax formulas computed by this tool are:
\(\text{Taxable Income} = \text{Gross Income} - (\text{Standard Deduction} + \text{Itemized Deductions})\)
\(\text{Total Tax} = \sum (\text{Bracket Portion} \times \text{Bracket Rate})\)
\(\text{Effective Rate (\%)} = \left(\frac{\text{Total Tax}}{\text{Gross Income}}\right) \times 100\)
\(\text{Monthly Take-Home Pay} = \frac{\text{Gross Income} - \text{Total Tax}}{12}\)
Standard deductions reduce gross income based on filing status. Itemizing additional deductions (mortgage interest, medical costs, state taxes) lowers taxable income further.