🇺🇸 US 0/15/20% 🇬🇧 UK £3K allowance 🇦🇺 AU 50% discount 🇨🇦 CA 50% inclusion

Capital Gains Tax Calculator

Calculate capital gains tax on investments in the US, UK, Australia, or Canada. Rules differ dramatically — the same $15,000 gain could cost you $0, $900, $1,850, or $3,000 depending on your country and situation.

In short

Use this to compare headline CGT on a share sale in the US, UK, Australia or Canada. Skip it for a tax return. UK: 18%/24% above a £3,000 annual exempt amount (ISA is 0%). Australia: 50% discount after 12 months. US long-term: 0/15/20% plus possible 3.8% NIIT. Singapore and Hong Kong: 0% on typical share gains.

At a glance

UK annual exempt

£3,000

Then 18% or 24% on shares

US long-term

0 / 15 / 20%

+ 3.8% NIIT for high earners

Australia >12 months

50% discount

Then your marginal rate

Singapore / HK

0%

No CGT on typical share sales

💡 US: Short-term (<12 months) taxed as ordinary income. Long-term (12+ months): 0%, 15%, or 20% based on income.

How do capital gains tax rates compare by country?

Country Short-Term Rate Long-Term Rate Annual Exemption
🇺🇸 United States 10–37% (ordinary)0%, 15%, or 20%None (use tax-loss harvesting)
🇬🇧 United Kingdom 18% / 24%18% / 24% (same)£3,000/year
🇦🇺 Australia Marginal income rate50% discount appliedNone (losses carry forward)
🇨🇦 Canada 50% inclusion + marginal50% inclusion + marginalTFSA account room
🇩🇪 Germany 26.375% flat26.375% flat€1,000 Sparerpauschbetrag
🇯🇵 Japan 20.315%20.315%NISA exemption
🇸🇬 Singapore 0%0%No CGT
🇭🇰 Hong Kong 0%0%No CGT

Key takeaways

  • The same $15,000 gain can be $0 (ISA/TFSA/Roth, or Singapore) or several thousand dollars (US short-term or UK higher-rate).
  • UK annual exempt amount is £3,000 in 2026. ISAs are fully CGT-exempt.
  • Australia’s 50% discount only applies after 12 months. Canada includes 50% of the gain in income.
  • This is an educational comparison, not a filing. Use IRS, HMRC, ATO, or CRA tools to file.

FAQ

Capital gains questions, answered straight

What is the capital gains tax rate in the US? ▾
US long-term capital gains (assets held more than 1 year) are taxed at 0%, 15%, or 20% depending on income. Short-term gains (held ≤1 year) are ordinary income at 10–37%. High earners also pay 3.8% NIIT on investment income above $200,000 single / $250,000 married.
What is the UK capital gains tax rate in 2026? ▾
Shares and most investments: 18% basic rate, 24% higher/additional rate. Annual exempt amount is £3,000 (cut from £12,300). ISA accounts are fully CGT-exempt.
Does Australia have capital gains tax? ▾
Yes. Gains are taxed as income, with a 50% discount if you held the asset more than 12 months. At a 37% marginal rate that is 18.5% effective on the discounted gain. The family home is generally exempt. Losses carry forward.
How does Canada tax capital gains? ▾
Canada includes 50% of the gain in taxable income, then applies your marginal rate. There is no annual CGT allowance like the UK £3,000; TFSA room is the tax-free wrapper.
Which countries charge 0% CGT? ▾
Singapore and Hong Kong do not levy capital gains tax on typical share sales. That is not a recommendation to relocate — residency and anti-avoidance rules still apply.
Who should skip this CGT calculator? ▾
Skip it for crypto-specific rules, carried interest, or a filing. Use IRS Topic 409, HMRC CGT, ATO, or CRA tools. This page compares headline systems, not every relief.

Sources & Methodology

Capital gains are taxed differently for short- vs long-term holdings, and rates and allowances vary by country. Wrappers (ISA, TFSA, Roth) can make the statutory rate irrelevant.

Standards and figures reviewed August 2026.

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Cite this page APA · MLA · BibTeX

APA

WorldCalculators.org. (2026, August 24). Capital Gains Tax Calculator — US, UK, Australia, Canada. https://worldcalculators.org/calculators/capital-gains-tax/

MLA

“Capital Gains Tax Calculator — US, UK, Australia, Canada.” WorldCalculators.org, 24 Aug. 2026, worldcalculators.org/calculators/capital-gains-tax/.

BibTeX

@misc{worldcalculators2026calculatorscapitalgainst,
  title        = {Capital Gains Tax Calculator — US, UK, Australia, Canada},
  author       = {{WorldCalculators.org}},
  year         = {2026},
  howpublished = {\url{https://worldcalculators.org/calculators/capital-gains-tax/}}
}

Figures change when tax years or guidance change. Cite the date shown and link the page so readers see the current version.