If you own or are considering a real estate investment in the United Kingdom, understanding property tax in the United Kingdom — particularly capital gains tax (CGT) — is essential. Whether you're a UK resident selling a buy-to-let property, an overseas investor disposing of UK land, or simply planning your next portfolio move, the tax implications of selling property can significantly affect your net returns.

In this comprehensive guide, we break down capital gains tax on property in the United Kingdom for the 2025/2026 tax year (6 April 2025 to 5 April 2026). We'll cover current rates, available reliefs, reporting obligations, and common mistakes — giving you the actionable knowledge you need to make informed decisions.

What Is Capital Gains Tax on Property?

Capital gains tax is a tax charged on the profit (or "gain") you make when you sell or dispose of an asset that has increased in value. In the context of real estate investment in the United Kingdom, CGT applies when you sell a property that is not your main home — such as a buy-to-let, a second home, commercial property, or inherited land.

Importantly, CGT is charged on the gain, not the total sale price. The gain is calculated as:

Gain = Sale Price − Purchase Price − Allowable Costs

Allowable costs include:

  • Stamp Duty Land Tax (SDLT) paid on the original purchase
  • Legal and conveyancing fees (on both purchase and sale)
  • Estate agent fees
  • Costs of significant improvements (e.g., extensions, renovations — but not routine maintenance)
  • Valuation fees required for tax purposes

Capital Gains Tax Rates on Property for 2025/2026

CGT rates on residential property in the United Kingdom are higher than those on other assets. For the 2025/2026 tax year, the rates are:

Residential Property CGT Rates

Tax Band CGT Rate on Residential Property
Basic rate taxpayer 18%
Higher or additional rate taxpayer 24%

These rates were confirmed following the changes introduced in the Autumn Budget 2024, which increased the higher rate from 20% to 24% for residential property gains (previously the rates had been 18% and 28%, then adjusted to 18% and 24%). For the 2025/2026 tax year, the residential property rates remain at 18% and 24%.

How Your Tax Band Affects Your CGT Rate

Your CGT rate depends on your total taxable income for the year. Here's how it works:

  1. Calculate your taxable income (employment, rental income, pensions, etc.)
  2. Calculate your property gain after deducting allowable costs and the Annual Exempt Amount
  3. Add the gain to your taxable income
  4. Any portion of the gain that falls within the basic rate band (up to £37,700 above the Personal Allowance of £12,570) is taxed at 18%
  5. Any portion above the basic rate threshold is taxed at 24%

Use our United Kingdom Capital Gains Tax Calculator to quickly determine your CGT liability based on your individual circumstances.

Annual Exempt Amount (AEA) for 2025/2026

Every individual receives an Annual Exempt Amount — a tax-free allowance for capital gains. For 2025/2026, the AEA is:

  • £3,000 for individuals
  • £1,500 for most trusts

This is a significant reduction from previous years (it was £12,300 as recently as 2022/2023 and £6,000 in 2023/2024), so property investors should be aware that almost all of their gains will now be subject to CGT.

Practical Example: Calculating CGT on a UK Property Sale

Let's work through a realistic example to illustrate how capital gains tax on property in the United Kingdom is calculated.

Scenario

  • Sarah is a higher rate taxpayer (annual salary of £65,000)
  • She purchased a buy-to-let flat in Manchester in 2015 for £180,000
  • She sells the flat in September 2025 for £270,000
  • Her allowable costs total £12,000 (SDLT, solicitor fees, estate agent fees, plus a £5,000 kitchen renovation)

Calculation

Step Amount
Sale price £270,000
Less: Purchase price −£180,000
Less: Allowable costs −£12,000
Total gain £78,000
Less: Annual Exempt Amount (2025/2026) −£3,000
Taxable gain £75,000

Since Sarah's salary of £65,000 already exceeds the higher rate threshold (£12,570 + £37,700 = £50,270), her entire taxable gain falls into the higher rate band:

  • CGT liability: £75,000 × 24% = £18,000

If Sarah were a basic rate taxpayer earning £30,000, a portion of her gain would be taxed at 18% and the remainder at 24%. Our United Kingdom Capital Gains Tax Calculator can handle these split-rate calculations for you instantly.

Key Reliefs and Exemptions for Property Investors

The UK tax system offers several reliefs that can reduce or eliminate your CGT liability on property. Understanding these is crucial for effective tax planning.

Private Residence Relief (PRR)

If the property has been your main home (principal private residence) for the entire period of ownership, you pay no CGT when you sell it. This is the most valuable relief available to UK homeowners.

However, the rules become more complex if:

  • You've let out part of your home
  • You were absent for periods during ownership
  • You own more than one property and need to nominate which is your main residence

Key rule: The last 9 months of ownership are always treated as occupation, even if you've moved out (previously this was 18 months — it was reduced in April 2020).

Lettings Relief

Lettings Relief is now only available where you share occupation of your home with a tenant. It can reduce your gain by up to £40,000 per owner (£80,000 for a couple). Since April 2020, it no longer applies simply because a property was once your main home and was subsequently let out.

Transfers Between Spouses and Civil Partners

Transfers of property between spouses or civil partners living together are treated as taking place at no gain, no loss. This means:

  • No CGT is triggered at the point of transfer
  • The receiving spouse inherits the original base cost
  • This can be used strategically to utilise both partners' Annual Exempt Amounts and basic rate bands

Important change from April 2023: Separating spouses now have up to 3 years from the date they cease living together (or until the finalisation of a financial settlement if sooner) to transfer assets on a no-gain, no-loss basis.

Rollover Relief and Holdover Relief

These reliefs primarily apply to business properties rather than residential investments:

  • Rollover Relief: Allows you to defer CGT when you sell a qualifying business asset and reinvest the proceeds in a new qualifying asset
  • Holdover Relief: Available for gifts of business assets, allowing the gain to be "held over" to the recipient

Reporting and Payment Deadlines: The 60-Day Rule

One of the most commonly overlooked obligations for property sellers in the UK is the 60-day reporting and payment deadline.

How the 60-Day Rule Works

When you sell a UK residential property on which CGT is due, you must:

  1. Report the disposal to HMRC via the "Report and pay Capital Gains Tax on UK property" service
  2. Pay the estimated CGT — all within 60 days of completion (not exchange of contracts)

This applies to:

  • UK residents selling a second home, buy-to-let, or other non-main-residence property
  • Non-UK residents selling any UK residential property (even if it was their home)

Penalties for Late Reporting

Failing to meet the 60-day deadline can result in:

  • An initial £100 late filing penalty
  • Further penalties if the return is more than 6 or 12 months late
  • Interest charges on late payment from the due date

Common mistake: Many sellers assume they can simply report the gain on their Self Assessment tax return in January. While you still need to include the gain on your annual return, the 60-day report and payment are separate and mandatory obligations.

Capital Gains Tax for Non-Residents Investing in UK Property

The UK's tax rules on real estate investment by non-residents have become significantly more comprehensive in recent years.

Non-Resident CGT (NRCGT)

Since April 2015 (for residential property) and April 2019 (for commercial property and land), non-UK residents are liable to CGT on gains from disposing of UK property and land.

Key points for non-resident investors:

  • All disposals of UK property must be reported to HMRC within 60 days, even if no tax is due
  • Non-residents can choose how to calculate the gain (rebasing to April 2015/2019 values, time apportionment, or full gain)
  • The same CGT rates apply: 18% (basic rate) and 24% (higher rate) for residential property
  • Non-resident companies disposing of UK property are subject to corporation tax on gains instead

Double Taxation Agreements

The United Kingdom has an extensive network of double taxation agreements (DTAs) with over 130 countries. In most cases, these treaties give the UK the primary right to tax gains on UK property (in line with the OECD Model Convention, Article 13).

However, your country of residence may also tax the gain — but should provide relief (usually a tax credit) for UK CGT paid. If you're a non-resident investor, it's vital to understand the specific DTA between your country and the UK to avoid being taxed twice.

Annual Tax on Enveloped Dwellings (ATED)

Non-resident companies (and some other "non-natural persons") holding UK residential property valued above £500,000 may also be subject to the Annual Tax on Enveloped Dwellings (ATED). This is an annual charge ranging from £4,400 to £282,750 for 2025/2026, depending on the property's value. ATED-related CGT may also apply on disposal.

Tax Planning Strategies for UK Property Investors

While you should always seek professional advice for your specific situation, here are some legitimate strategies that property investors commonly use to manage their CGT exposure:

1. Maximise Allowable Costs

Keep meticulous records of all qualifying expenditure — improvement works, professional fees, and costs of acquisition and disposal. Every pound of allowable cost reduces your taxable gain.

2. Use Both Partners' Allowances

If you own property jointly with a spouse or civil partner, you both receive the £3,000 Annual Exempt Amount, effectively doubling the tax-free portion to £6,000.

3. Consider the Timing of Your Sale

If your income fluctuates between tax years, selling in a year when your income is lower could mean part of your gain is taxed at 18% rather than 24%. Use our United Kingdom Income Tax Calculator to model your income in different scenarios.

4. Offset Capital Losses

Capital losses from other asset disposals (e.g., shares, other properties) can be offset against your property gains. Losses must be reported to HMRC within 4 years of the end of the tax year in which they arose.

5. Consider Incorporation

For larger portfolio landlords, holding properties through a company means gains are subject to corporation tax (25% for 2025/2026) rather than personal CGT. However, transferring existing properties into a company can trigger CGT and SDLT, so this must be carefully planned.

Frequently Asked Questions

Do I pay CGT when I sell my main home?

No — your main home (principal private residence) is usually fully exempt from CGT under Private Residence Relief, provided you have lived in it as your primary residence throughout ownership and haven't used it for business purposes.

What if I've lived in the property and also rented it out?

You may receive partial Private Residence Relief for the periods you occupied the property. The last 9 months of ownership are always treated as occupation. You may also qualify for Lettings Relief if you shared the property with a tenant.

Do I need to report if I make a loss on a property sale?

UK residents do not need to file a 60-day CGT return if there is no tax to pay (after reliefs and losses). However, non-residents must report all UK property disposals within 60 days, regardless of whether a gain or loss arises. It's also advisable to report losses to HMRC so they can be carried forward against future gains.

How does inheritance affect CGT?

When you inherit a property, the base cost for CGT purposes is the market value at the date of death (or the probate value). If you later sell the property for more than this value, CGT applies on the difference. Inheritance Tax is a separate consideration.

Can I pay CGT in instalments?

HMRC does not generally allow CGT to be paid in instalments for property disposals. The full estimated amount is due within 60 days of completion. However, if you are genuinely unable to pay, you should contact HMRC to discuss a Time to Pay arrangement.

Conclusion: Key Takeaways for Property Investors

Capital gains tax is one of the most significant costs facing property investors in the United Kingdom. Here are the essential points to remember for 2025/2026:

  • CGT rates on residential property are 18% (basic rate) and 24% (higher rate)
  • The Annual Exempt Amount has been reduced to just £3,000 per individual
  • You must report and pay CGT within 60 days of completing a property sale
  • Non-residents are fully subject to UK CGT on property disposals and must report all sales within 60 days
  • Private Residence Relief can eliminate CGT on your main home, but the rules are strict
  • Keep detailed records of all allowable costs to minimise your taxable gain
  • Double taxation treaties may provide relief if you're taxed in another country

Use our United Kingdom Capital Gains Tax Calculator to estimate your liability before you sell, and our United Kingdom Income Tax Calculator to understand how your income level affects your CGT rate.

This article is for informational purposes only and does not constitute tax advice. Tax laws change frequently; consult a qualified tax professional for advice specific to your situation.