Income Tax Calculator

A general progressive income-tax calculator. Enter or edit tax brackets, a tax-free allowance and deductions to see the tax in each band, your effective and marginal rates and your income after tax. The included presets are labelled examples to start from, not a statement of current law.

How to use the Income Tax Calculator

1. Choose an example preset or start with custom brackets.
2. Check every bracket limit and rate against the current rules for your country, and edit them.
3. Enter your annual income, tax-free allowance and any deductions.
4. Press Calculate to see tax per bracket and your effective and marginal rates.

Features

• Add, remove and edit brackets ("up to" limit and rate)
• Tax-free allowance and extra deductions
• Tax per bracket with effective and marginal rates
• Clearly labelled example presets you can modify

Benefits

• Understand how progressive tax actually works — a raise never lowers take-home pay
• Model any country's or a proposed tax system by entering its brackets

Frequently asked questions

Are the presets up to date?

Not guaranteed. They are simplified examples based on published figures for the year in their name and may have changed. Always check the official tax authority for the brackets that apply to you.

What is the difference between effective and marginal rate?

The marginal rate is the rate on your last unit of income. The effective rate is total tax divided by total income, which is always lower in a progressive system.

Does this include social security or local taxes?

Only if you add them as brackets. It does not model credits, phase-outs or surcharges. This is an estimate, not tax or financial advice.

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