Finance Tools
What It Does
Estimates your income tax using progressive tax brackets. Choose from built-in presets for 8 tax systems — US Federal 2024, UK 2024/25, France 2024, Germany 2024, Spain 2024, Italy 2024 (IRPEF), Netherlands 2024, and Portugal 2024 (IRS) — or define your own custom brackets. The calculator applies your deduction to compute taxable income, then shows a bracket-by-bracket breakdown of how each portion of your income is taxed. It displays your effective tax rate (what percentage of your total income goes to tax), your marginal rate (the rate on your last dollar earned), and your after-tax income. A deduction comparison table shows how changing your deduction level affects your tax bill. This is an estimator for educational purposes — it is not tax advice.
How to Use It
- Enter your gross annual income.
- Select a bracket preset (US Federal 2024, UK 2024/25, France, Germany, Spain, Italy, Netherlands, Portugal, or Custom).
- If using US Federal 2024, select your filing status (Single, Married Filing Jointly, or Head of Household).
- Choose “Standard” to use the preset's default deduction, or “Custom” to enter a specific deduction amount.
- Select your currency from the dropdown (defaults to USD).
- Click “Calculate” to see the tax estimate, or “Clear” to reset all fields.
- Review the bracket breakdown to understand how each portion of income is taxed at different rates.
- Use the deduction comparison table to see how different deduction levels would change your tax.
- Use “Copy Results” to copy the summary to your clipboard, or “Export CSV” / “Export Excel” to download the full analysis.
Options Explained
| Option | Description |
|---|---|
| Gross income | Your total annual income before any deductions or taxes |
| Bracket preset | The tax system to use. US Federal 2024 uses IRS-published brackets. UK 2024/25 models HMRC rates (with Personal Allowance as a 0% bracket). EU presets include France, Germany, Spain, Italy, Netherlands, and Portugal with their official 2024 brackets. Custom lets you define your own brackets |
| Filing status | US Federal only — determines which bracket thresholds and standard deduction apply. Single is for unmarried individuals, Married Filing Jointly for married couples filing together, Head of Household for unmarried individuals supporting dependents |
| Deduction type | “Standard” uses the default deduction for the selected preset and filing status. “Custom” lets you enter a specific dollar amount |
| Deduction amount | The amount subtracted from gross income to determine taxable income. When set to Standard, this is automatically filled. When Custom, you can enter any amount from $0 up to gross income |
| Custom brackets | Define your own tax brackets when using the Custom preset. Each bracket has a lower bound, upper bound, and tax rate (%). The last bracket's upper bound is always infinity |
| Currency | The currency for all monetary values — affects the symbol shown on amounts. Does not perform any conversion |
| Export CSV | Downloads a .csv file with the summary, bracket breakdown, and deduction comparison table — ideal for spreadsheets or data analysis |
| Export Excel | Downloads an .xlsx file with the same data formatted for Microsoft Excel or compatible applications |
About Tax Brackets
A progressive tax system divides your income into portions called “brackets,” each taxed at a different rate. Only the income within each bracket is taxed at that bracket's rate — not your entire income. This means moving into a higher tax bracket does not cause all of your income to be taxed at the higher rate.
Your marginal tax rate is the rate applied to the last dollar you earn, while your effective tax rate is the average rate across all your income. The effective rate is typically much lower than the marginal rate because lower portions of income are taxed at lower rates.
Deductions reduce your taxable income before tax is calculated. A standard deduction is a fixed amount set by the tax authority, while itemized deductions are based on specific qualifying expenses. Higher deductions lower your taxable income and therefore your total tax. Use the deduction comparison table to see how different deduction amounts affect your tax liability.