How to Use the Income Tax Calculator
- Select your country (US, UK or Canada).
- Enter your gross annual income.
- The calculator applies that region's progressive tax brackets.
- Review your estimated tax, effective rate and net take-home pay.
How tax brackets actually work
Income tax is usually progressive, meaning different portions of your income are taxed at different rates. Moving into a higher bracket does not tax all your income at that rate, only the part that falls within the bracket.
That difference explains marginal versus effective tax rate. Your marginal rate is the rate on your last dollar of income; your effective rate is the total tax divided by total income, which is always lower. Knowing this dispels the common myth that a raise can leave you worse off.
Ways to lower taxable income
Most tax systems let you reduce taxable income through deductions and pre-tax contributions, for example to retirement accounts, and reduce the tax itself through credits. Even small, legitimate reductions can move you further from the next bracket.
Rules vary widely by country and change over time, and personal situations differ. Use this calculator for a quick estimate and treat the result as general information rather than tax advice; for anything important, check the current rules or speak to a qualified professional.
Frequently Asked Questions
Which tax brackets does this use?
It applies representative national progressive income-tax brackets for the US (federal), UK and Canada (federal). It is a simplified estimate and does not include state, provincial or local taxes.
What is an effective tax rate?
Your effective tax rate is total tax divided by total income. It's lower than your top marginal bracket because progressive systems tax each band of income at a different rate.
Is this a substitute for tax advice?
No. It's a planning estimate. Deductions, credits, filing status and local taxes affect your real bill, consult a qualified tax professional for filing.
Are my income figures private?
Yes. The calculation runs entirely in your browser and nothing you enter is transmitted or stored anywhere.