Income Tax Calculator
Estimate your federal income tax and after-tax income.
Tax Information
Disclaimer: Tax brackets shown are for reference only (2023 rates). Consult IRS.gov for current rates. This calculator provides estimates only.
Tax Calculation
About This Calculator
The Income Tax Calculator helps you estimate your federal income tax liability based on your gross income, filing status, and deductions. This calculator uses current tax brackets to provide an estimate of your tax obligation.
This is a simplified calculator for estimation purposes. Actual tax calculations may vary based on credits, additional deductions, state taxes, and other factors. Consult a tax professional for accurate tax planning.
Formula & Calculation Method
Income Tax Calculation:
Taxable Income = Gross Income - Deductions
Federal Tax = Sum of (Taxable Income in Each Bracket × Bracket Rate)
Effective Tax Rate = (Federal Tax ÷ Gross Income) × 100
After-Tax Income = Gross Income - Federal Tax
The U.S. uses a progressive tax system with multiple brackets. Each portion of income is taxed at the corresponding bracket rate.
How to Use This Calculator
- Enter Gross Income: Input your total annual income before deductions.
- Select Filing Status: Choose Single or Married Filing Jointly.
- Enter Deductions: Input your total deductions (standard or itemized).
- View Results: See taxable income, federal tax, effective rate, and after-tax income.
Frequently Asked Questions
What is the difference between effective and marginal tax rate?
Effective tax rate is your total tax divided by gross income. Marginal tax rate is the rate on your last dollar of income. Effective rate is typically lower than marginal rate.
Does this calculator include state taxes?
No, this calculator only estimates federal income tax. State taxes vary by state and should be calculated separately.
What deductions should I include?
Include standard deduction ($12,950 single, $25,900 married) or itemized deductions (mortgage interest, charitable contributions, etc.), whichever is higher.
Is this calculator accurate for my tax return?
This is an estimation tool. Actual taxes depend on many factors including credits, additional income sources, and specific deductions. Consult a tax professional for accurate calculations.
NumCalculators Editorial Team
Multi-disciplinary Expert Team
The NumCalculators Editorial Team consists of subject matter experts across various fields who review and verify the accuracy of our calculators. Each calculator undergoes rigorous testing and validation before publication.