● CGT · 2026/27 · £3,000 allowance

Capital Gains Tax Calculator

Sold shares, a fund, crypto or a second property? Estimate the Capital Gains Tax due in 2026/27 after the £3,000 annual exempt amount — with the 18% and 24% rates applied to the right slices of your gain.

📈 Shares & property 🧾 £3,000 allowance 📊 18% / 24% bands

Estimate your CGT

2026/27 · England, Wales & NI rates

£
£
Capital Gains Tax due
£0
on a taxable gain of £0
Total gain£0
Annual exempt amount−£3,000
Taxed at 18%£0
Taxed at 24%£0
Total CGT£0

CGT sits on top of your income: the part of the gain falling in your remaining basic-rate band is 18%, the rest 24%. 2026/27 rates.

📈 Shares, funds, crypto & property 📅 2026/27 allowance & rates 🏛️ HMRC sourced 🔒 Private & free
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How Capital Gains Tax works in 2026/27

You pay Capital Gains Tax (CGT) on the profit when you sell an asset that has risen in value — not on the whole amount you receive. The gain is the sale price minus what you paid and any allowable costs. The first £3,000 of gains each tax year is tax-free under the annual exempt amount.

What’s left is taxed at a rate that depends on your other income. The slice of the gain that fits inside your remaining basic-rate band is taxed at the lower rate; anything above the higher-rate threshold is taxed at the higher rate.

AssetBasic-rate bandHigher-rate band
Shares, funds, crypto, other18%24%
Residential property18%24%

Worked example: £20,000 share gain

  • Start with a £20,000 gain.
  • Deduct the £3,000 allowance → £17,000 taxable.
  • If your income is £40,000, you have around £10,270 of basic-rate band left, taxed at 18% = £1,849.
  • The remaining £6,730 is taxed at 24% = £1,615.
  • Total CGT ≈ £3,464.
Cut your CGT legally: use both spouses’ allowances by transferring assets before sale, hold investments in an ISA or pension (gains are tax-free), and offset losses from other disposals against your gains.

Reporting and paying CGT

For most assets you report gains through Self Assessment by 31 January after the tax year. For UK residential property, you must report and pay within 60 days of completion using HMRC’s online CGT service. Keep records of purchase costs, improvement costs and selling fees, as these reduce the gain.

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Capital Gains Tax FAQs

What is the CGT allowance for 2026/27?

The annual exempt amount is £3,000. You only pay CGT on gains above this in the tax year.

What are the CGT rates in 2026/27?

For shares and most assets, 18% within your remaining basic-rate band and 24% above it. Residential property is also taxed at 18% and 24%.

How is Capital Gains Tax calculated?

Take your gain (sale price minus cost and allowable expenses), subtract the £3,000 allowance, then apply 18% or 24% depending on how much basic-rate band remains after your income.

Do I pay CGT on my main home?

Usually not — your main residence is covered by Private Residence Relief. CGT mainly applies to second homes, buy-to-lets, shares outside an ISA, funds and crypto.

Mustafa Bilgic
Reviewed by Mustafa Bilgic
Founder, WebCalculator

CGT rates and the annual exempt amount are taken from HMRC for 2026/27. Reliefs can be complex — consider advice from a qualified tax adviser. Estimates only.