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Capital Gains Tax Calculator 2024/25

Calculate CGT across all asset types — residential property, shares, business assets, and other disposals. Includes BADR at 10%, the £3,000 annual exempt amount, and 2024/25 rates from October 2024.

Capital Gains Tax Calculator 2024/25

Covers property, shares, BADR, and other assets. Rates from October 2024.

Total amount received on disposal

Purchase price plus allowable acquisition costs

Your income tax band in the year of disposal

Used to calculate your remaining basic rate band

If you have made other gains this year

Key CGT planning points 2024/25

  1. Annual exempt amount is £3,000 — down from £6,000 in 2023/24. Use it before year-end; it cannot be carried forward.
  2. Transfer assets to your spouse before sale — CGT-free between spouses; your combined allowances and rate bands can halve the total tax.
  3. Capital losses reduce your gains — losses in the same year are automatically offset against gains. Losses from prior years can be carried forward indefinitely (report them to HMRC even if no tax is due).
  4. BADR lifetime limit is £1M — use carefully; once used, it cannot be replenished.
  5. ISA wrapper— future gains on assets held inside a Stocks & Shares ISA are completely CGT-free.

Capital Gains Tax rates 2024/25

From 30 October 2024, HMRC applies the following CGT rates:

  • Residential property: 18% (basic rate) / 24% (higher/additional rate)
  • Shares, business assets, other: 18% (basic rate) / 24% (higher/additional rate)
  • Business Asset Disposal Relief (BADR): 10% on qualifying gains up to £1M lifetime limit
  • Annual exempt amount: £3,000 (2024/25)

BADR eligibility

Business Asset Disposal Relief applies where you dispose of shares in a personal trading company where you: (1) own ≥5% of ordinary share capital and voting rights; (2) are an employee or director; and (3) have held the shares and been an employee/director for at least 2 years before disposal. The lifetime limit is £1 million of qualifying gains — gains above this are taxed at standard rates.

Residential property: 60-day reporting rule

If you sell a UK residential property and a CGT liability arises (i.e. it is not your main home or not fully covered by exemptions), you must report and pay the tax within 60 days of completion using HMRC's Capital Gains Tax on UK Property service — even if you also complete a self-assessment return. Failure to report within 60 days triggers automatic penalties.