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Capital Gains Tax in 2026/27: rates, the allowance and good timing

With an annual exempt amount of just £3,000 and rates of 18% and 24%, more people are paying Capital Gains Tax. How it works, and the planning that still makes a difference.

Guide2 min readUpdated Share

Capital Gains Tax applies to the gain when you sell or give away an asset that has risen in value: shares outside an ISA, a second property, a business, or valuable possessions worth £6,000 or more. Your main home is usually exempt.

How the rate is set

After the £3,000 annual exempt amount, gains are added to your taxable income. The part that falls within the basic rate band is taxed at 18%, the rest at 24%. In HMRC’s example, someone with £20,000 of taxable income and gains of £52,600 pays 18% on £17,700 and 24% on £31,900: £10,842 in all.

Exhibit 1Capital Gains Tax on that £52,600 gain, from HMRC’s example
£3kAnnual exempt amountno tax£17.7kTaxed at 18%£31.9kTaxed at 24%
Show the data
Annual exempt amount (no tax)£3,000
Taxed at 18%£17,700
Taxed at 24%£31,900

Planning that still helps

  • Use each year’s £3,000: it cannot be carried forward.
  • Move assets between spouses before a sale, so both allowances and basic rate bands are used.
  • Report losses: they can be set against future gains, but only if claimed within four years.
  • Use ISAs and pensions for new investments, so future gains are tax-free.

Business Asset Disposal Relief, at 18%, applies to the first £1 million of lifetime gains on qualifying business sales until 5 April 2027, and the first £500,000 after that.

This insight is general information, not advice for your circumstances. Talk to us before acting on it.

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