Using the Tax calculators
Enter your own figures to get an instant estimate, then read the formula, worked example and FAQ on each tool for the detail behind the result. Every calculator runs privately in your browser — nothing you type is stored or sent anywhere.
Frequently asked questions
Marginal vs effective rate?
Marginal is the rate on your top slice of income; effective is your overall average, usually lower.
Are the rates current?
Rates and thresholds change yearly and vary by country — treat results as a guide.
Does a raise into a new bracket cost me?
Only the income above the threshold is taxed at the higher rate.