UK Capital Gains Tax on Property: What Investors Actually Pay in 2026 (Worked Examples)

Capital Gains Tax on residential property has quietly become one of the biggest silent costs for UK landlords. For higher-rate taxpayers, 24 per cent of every pound of gain above £3,000 goes to HMRC, and the bill is due within 60 days of completion.

Key Takeaways

• 2026 Rates: 18 per cent for basic-rate taxpayers, 24 per cent for higher and additional-rate taxpayers on residential property gains.
• The Allowance: £3,000 tax-free per individual per tax year, applied across all capital gains, not just property.
• The 60-Day Rule: UK residential property gains must be reported and paid within 60 days of completion, separately from Self Assessment.
• Political Risk: Andy Burnham has signalled openness to CGT reform. Nothing legislated, but investors making 10-year decisions should factor it in.

The 2026 CGT Rates and What Changed in October 2024

For the 2026-27 tax year, Capital Gains Tax on UK residential property is charged at:

• 18 per cent for basic-rate taxpayers
• 24 per cent for higher and additional-rate taxpayers

Both rates apply after your £3,000 annual exempt amount. These rates have been in place since the Autumn Budget of 30 October 2024, when the previous higher rate of 28 per cent was cut to 24 per cent.

Which rate applies to your gain depends on your total taxable income for the year. If your income plus gain sits inside the basic-rate band (up to £50,270), you pay 18 per cent. Any portion above that threshold is taxed at 24 per cent.

Your £3,000 Annual Allowance

The Annual Exempt Amount (AEA) is £3,000 per individual for the 2026-27 tax year, unchanged from 2024-25 and 2025-26. It is a use-it-or-lose-it allowance — unused portions do not roll forward.

Two practical points property investors miss:

• The £3,000 applies to your total capital gains for the year across all assets, not just property. If you sold shares or crypto in the same tax year, the same £3,000 covers those too.
• Each individual has their own £3,000. Jointly-owned property means both owners can each use their own allowance, halving effective CGT on the transaction if timed correctly.

Related Readings:

Explore our full Manchester area guide, a side-by-side breakdown of the 6 best districts for property investors.

The 60-Day Reporting Rule Most Landlords Underestimate

If you sell UK residential property at a gain, you must report the gain and pay the CGT due within 60 days of the completion date. This is done separately from your Self Assessment tax return, using an HMRC "Capital Gains Tax on UK property" online account.

Miss the deadline and HMRC imposes penalties plus interest. The 60-day clock starts on completion, not on exchange or sale agreement.

Practical implication: if you are selling a rental property, brief your accountant BEFORE completion, not after. Once completion happens you have 60 days to file and pay, which typically means starting the calculation within days of the sale.

Quick FAQ:

Q: What happens if I miss the 60-day deadline?
A: HMRC imposes a £100 initial penalty, then further penalties at 3 and 6 months if the return is still outstanding, plus daily interest on the unpaid tax. Late-filing penalties can quickly exceed the CGT itself on smaller gains.

What Costs You Can Actually Deduct

Your taxable gain is the sale price minus your original purchase cost, minus allowable deductions. Deductions include:

• Stamp Duty Land Tax paid at purchase (see our Stamp Duty BTL guide for the current rates)
• Legal fees on purchase and sale
• Estate agent fees on sale
• Survey fees
• Capital improvement costs (structural changes, extensions, new kitchens — not routine repairs)

What you cannot deduct: mortgage interest (that goes against rental income under Section 24), routine maintenance, painting and decorating, or the cost of your own time.

Related Readings:

Fresh UK property market updates for investors — regeneration, yields, tax rules and monthly rental data, all in one hub.

• Understand Stamp Duty for BTL investors → Read the article here
• How to calculate Rental Yield? → Read the article here

Worked Examples: The Real CGT Numbers

Example 1: Basic-rate taxpayer, Manchester flat

• Purchase price 2018: £180,000
• Stamp Duty + legal fees at purchase: £8,000
• Sale price 2026: £245,000
• Agent + legal fees on sale: £5,000
• No capital improvements

Gain: £245,000 - £180,000 - £8,000 - £5,000 = £52,000. After the £3,000 allowance: £49,000 taxable. At 18 per cent: £8,820 CGT due within 60 days of completion.

Example 2: Higher-rate taxpayer, Birmingham flat

• Same purchase and sale numbers as Example 1
• Same £49,000 taxable gain after allowance

At 24 per cent: £11,760 CGT due. That is £2,940 more than a basic-rate taxpayer would pay on the same gain.

Example 3: Jointly-owned property, higher-rate + basic-rate spouse

• Same £52,000 total gross gain, split 50:50
• Each spouse: £26,000 gross, minus their own £3,000 allowance = £23,000 taxable each

Higher-rate spouse: £23,000 × 24% = £5,520. Basic-rate spouse: £23,000 × 18% = £4,140. Total CGT: £9,660. That is £2,100 less than if the higher-rate spouse held the property alone.

Free Tools to Utilise:

Rothmore Property offers free tools designed to help property investors make smarter decisions. Easily calculate Stamp Duty, Return on Investment (ROI), Mortgage repayments, and Rental Yields. Try it here↓

Private Residence Relief and When It Applies

Private Residence Relief (PRR) is the reason most people don't pay CGT when they sell their own home. If a property has been your only or main residence throughout your period of ownership, you generally qualify for full PRR and pay no CGT on the sale.

Partial PRR applies if the property was your main home for only part of the ownership period. The relief covers those years plus the final 9 months automatically.

Buy-to-let landlords cannot claim PRR on a property that has never been their main home. PRR is not a general landlord relief.

What a Burnham Premiership Could Change

Andy Burnham has signalled openness to Capital Gains Tax reform. According to analysis from Grant Thornton and the Chartered Institute of Taxation, two proposals matter most for property investors.

First, aligning CGT with income tax bands. If implemented, the top CGT rate on residential property could rise from 24 per cent to 45 per cent for additional-rate taxpayers. Someone realising a £50,000 taxable gain would face £22,500 instead of £12,000.

Second, replacing council tax and stamp duty with a land value tax. Under the Fairer Share model Burnham has signalled interest in, that would be an annual charge of around 0.48 per cent of assessed property value, doubling to 0.96 per cent for second homes and overseas buyers.

Important caveats: no legislation has been tabled, no formal policy document has been published, and any changes would most likely follow the next general election, expected in 2029. Treat these as risk signals to model, not confirmed rules.

Quick FAQ:

Q: Should I sell before Burnham changes the rules?
A: Base your decision on current rules, current market conditions, and your own investment goals — not speculative political risk that may not materialise. If reform does arrive, it will likely come with transition rules and forward notice, giving investors time to plan.

The Bottom Line

For 2026-27, UK residential property CGT is 18 or 24 per cent above a £3,000 allowance, and the 60-day reporting rule is the operational trap most landlords underestimate. Political reform is a possibility, not a certainty. Model current rules as your base case, factor in reform risk as a scenario, and keep every purchase and improvement receipt on file — you will need them years later.

Disclaimer: This article is for general information only. Rothmore Property is not a tax adviser, accountant, or financial planner. Tax legislation is complex and individual circumstances vary. Consult a qualified accountant or tax specialist before making any capital gains decisions specific to your situation.