HMRC pulled in a record £24.2 billion in Capital Gains Tax (CGT) over the 2024/25 tax year. That marks a huge 89% jump from the year before. On top of that, 584,000 people ended up paying the tax, a 45% increase and the highest number ever recorded.
Rising tax rates, smaller annual tax-free limits, and a rush to sell off assets ahead of the Autumn Budget all pushed these figures to new highs. Total reported gains shot up to £127 billion (an 82% increase).
While the top 1% of earners making gains of £5 million or more paid nearly half of the total bill (45%), the broader picture shows that everyday investors, landlords, and business owners are getting caught in the tax net too.
Why Did Tax Bills Spike So Fast?
Four main factors drove this sudden jump in tax revenue:
- Slashed Tax-Free Allowance: The annual tax-free allowance dropped from £6,000 down to £3,000 on 6 April 2024. This single cut pulled about 76,000 extra people into paying CGT. Combined with previous cuts, over 163,000 more taxpayers got dragged into the system.
- Higher Main Tax Rates: Main CGT rates jumped on 30 October 2024, rising from 10% and 20% up to 18% and 24%.
- Pre-Budget Panic Selling: Rumours of massive tax hikes led many investors and business owners to sell off assets early. People rushed to close sales before the Autumn Budget took effect to lock in lower rates.
- Shrinking Business Reliefs: Business Asset Disposal Relief (BADR) rates moved from 10% up to 14% in April 2025, before hitting 18% in April 2026.
Who Is Getting Hit the Hardest?
The numbers offer clear proof that CGT isn’t just a concern for multi-millionaires anymore:
- Small Gains, New Tax Bills: Around half of all CGT taxpayers reported total gains under £25,000. Together, they generated less than 2% of the overall £24.2bn collected. This shows just how easily the lower £3,000 allowance forces small-scale investors to file tax returns.
- London and Southeast Concentration: Property values and company sales in London and the Southeast generated 50% of all CGT liabilities and 49% of all declared gains.
- Crypto Traders Under Scrutiny: For the first time, HMRC released dedicated figures for digital assets. Over 17,600 traders reported £1.38 billion in crypto gains, proving that HMRC is actively monitoring exchange data and making crypto tax compliance a growing priority for investors.
Steps You Should Take Before Selling Any Asset
Checking your tax position after you complete a sale usually leads to expensive surprises. If you plan to sell property, shares, or a business, keep these steps in mind:
- Calculate Gains Early: Work out your net gain before agreeing to a sale. Account for original purchase costs, legal fees, and home improvement expenses to lower your taxable sum.
- Use Capital Losses: Offset current or past capital losses against your gains. Unused losses from previous tax years can trim your overall tax bill down significantly.
- Check Relief Eligibility: If you own a business or hold company shares, check whether you qualify for the remaining BADR rules or Holdover Relief before signing paperwork.
- Keep Clean Paperwork: Store purchase invoices, sale agreements, and receipts safely. Having clear paper trails saves time and prevents reporting headaches with HMRC later.
How Lanop Helps You Protect Your Wealth
With HMRC collecting record tax sums, smart tax planning before you sell an asset makes a huge difference to your bottom line.
Our team at Lanop reviews your planned asset disposals, calculates exact tax liabilities, claims all eligible reliefs, and submits precise tax filings directly to HMRC. Getting expert advice early gives you full control over your finances and protects your money from unexpected tax penalties.
Contact Lanop today to review your upcoming asset sale and make sure your tax position is fully optimised before you commit.
