Tax Bracket Calculator
See exactly how much tax you pay at every bracket level. Enter your income and your country’s brackets to visualize the waterfall breakdown, compare marginal vs effective rates, and understand progressive taxation. Works with any currency.
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How to Use This Calculator
Tab "My Tax"
Enter your annual taxable income and your country's tax brackets. Each bracket has a threshold (where the bracket starts) and a rate (the percentage applied). The calculator shows tax paid at each bracket, total tax, after-tax income, effective rate, and marginal rate. You can add up to 7 brackets.
Tab "Bracket Waterfall"
See a visual breakdown of how your income is divided across tax brackets. Each colour-coded segment shows the portion of income in that bracket, the rate applied, and the tax generated. The stacked bar shows proportional width so you can see at a glance where most of your tax comes from.
Tab "Marginal vs Average"
Compare your marginal tax rate (the rate on your last dollar) with your effective/average rate (total tax divided by total income). A bar chart shows both rates side by side, and a plain-English explanation clarifies why the effective rate is always lower in a progressive system.
The Formulas
Tax = min(Income remaining, Bracket width) × Rate
Total tax:
Total Tax = Σ Tax per bracket
Effective (average) tax rate:
Effective Rate = Total Tax / Total Income × 100
Marginal tax rate:
Marginal Rate = Rate of the highest bracket your income falls into
After-tax income:
After-Tax = Total Income − Total Tax
All calculations use a progressive (graduated) tax model. Only income within each bracket is taxed at that bracket's rate. No country-specific data is hardcoded — enter your own brackets.
Worked Examples
Example 1 — $85,000 income with 5 brackets
Suppose the brackets are: 0–$10,000 at 10%, $10,000–$40,000 at 20%, $40,000–$85,000 at 30%.
Even though the marginal rate is 30%, the effective rate is only 24.12% because the first portions of income are taxed at 10% and 20%.
Example 2 — Flat 20% tax vs progressive brackets on $85,000
Compare a flat 20% rate against the progressive brackets above.
Whether progressive or flat taxation results in more tax depends entirely on the specific rates and brackets. Use the calculator to compare different configurations.
Example 3 — UK-style brackets on £55,000 income
UK tax brackets: £0–£12,570 at 0% (personal allowance), £12,570–£50,270 at 20%, £50,270+ at 40%.
The personal allowance means the first £12,570 is tax-free, significantly reducing the effective rate compared to the marginal rate of 40%.
Understanding Tax Brackets
What Is Progressive Taxation?
Progressive taxation means income is taxed in layers. Each layer (bracket) has its own rate, and only income within that range is taxed at that rate. This ensures that people with lower incomes pay a smaller proportion of their earnings in tax. Most countries — including the US, UK, Canada, Australia, India, and Germany — use some form of progressive income taxation.
Marginal vs Effective Rate
Your marginal rate is the rate on your last dollar of income — it determines how much tax you pay on additional earnings. Your effective rate is the average rate across all your income. In a progressive system, the effective rate is always lower than or equal to the marginal rate. Understanding this difference is critical for financial planning, as many people overestimate their tax burden by confusing the two.
The "Higher Bracket" Myth
A common misconception is that earning more money and moving into a higher bracket means all your income is taxed at the higher rate. This is false. Only the income above the new threshold is taxed at the higher rate. You always take home more money when you earn more. There is no scenario in a standard progressive system where a raise results in less after-tax income.
Why Brackets Vary by Country
Each country sets its own brackets based on economic policy, revenue needs, and social goals. Some countries have a tax-free threshold (like the UK personal allowance or Germany's Grundfreibetrag), while others tax from the first dollar. The number of brackets ranges from 1 (flat tax countries) to 7+ (like the US federal system). This calculator lets you model any configuration.