My country isn't listed — can I still use this calculator?
Yes. Select "Custom / Other Country" from the country dropdown to enter your own country name, currency symbol, flat income tax rate, and tax-free allowance. The calculator applies your rate as a single bracket to your taxable income, giving a quick estimate for any country worldwide — not just the six pre-built tax systems. It won't model a progressive bracket structure if your country has one, but it's a fast way to estimate tax and net income using a rate you already know (e.g. from your country's tax authority website).
What are the income tax rates in the UK for 2024/25?
UK income tax bands 2024/25: Personal Allowance £12,570 (0%). Basic rate 20% on £12,571–£50,270. Higher rate 40% on £50,271–£125,140. Additional rate 45% above £125,140. The Personal Allowance is tapered away above £100,000 — losing £1 of allowance for every £2 earned — creating an effective 60% marginal rate between £100,000–£125,140.
What is the income tax rate in Canada for 2024?
Federal rates: 15% on first $55,867; 20.5% on $55,868–$111,733; 26% on $111,734–$154,906; 29% on $154,907–$220,000; 33% above $220,000. Provincial taxes add a further 4–25.75% depending on province. Quebec has the highest combined rates; Alberta has no provincial income tax (0%).
What is the income tax in Australia for 2024/25?
Australian income tax rates 2024/25: 0% on income up to $18,200 (tax-free threshold). 19% on $18,201–$45,000. 32.5% on $45,001–$120,000. 37% on $120,001–$180,000. 45% above $180,000. The 2024/25 Stage 3 tax cuts reduced the 32.5% bracket and increased the threshold for the top rate.
How do I calculate my real effective tax rate with custom deductions?
Your real effective rate accounts for every deduction you actually claim, not just the generic standard allowance. This calculator lets you add a custom deduction percentage (e.g. 5–10% pre-tax retirement contributions, or a self-employed expense ratio) on top of itemised "other deductions" like mortgage interest or charitable giving. The tool stacks both onto your country's standard allowance (whichever side is larger) before applying the progressive brackets, then divides total tax by gross income to show your true effective rate — typically several points lower than your marginal bracket rate.
What is the difference between marginal rate and effective tax rate?
Marginal rate is the tax rate on your last dollar of income — the highest bracket you reach. Effective rate is your total tax divided by total gross income — a blended average across all brackets and deductions. For example, a UK earner on £60,000 has a 40% marginal rate but typically only a 20–24% effective rate once the tax-free Personal Allowance and any pension contributions are factored in. Effective rate is the better measure of your true tax burden.
How does income tax differ from National Insurance or Social Security?
Income tax funds general government spending. National Insurance (UK) / Social Security (US) / CPP & EI (Canada) are separate payroll levies that fund specific programs (state pension, unemployment benefits, healthcare). They are calculated separately and have different rates, thresholds, and caps. Always calculate both to find your true net pay.