Capital Gains Tax On Selling A Second Home In The UK

Selling a second home in the UK can create a significant tax bill if the property has increased in value. Unlike the sale of a qualifying main residence, where Private Residence Relief can often protect all or most of the gain, a second home will commonly fall within the Capital Gains Tax rules. The important point is that tax is generally calculated on the gain rather than the total amount received from the sale.

For the 2026/27 tax year, individuals generally pay Capital Gains Tax at 18% or 24%, depending on their taxable income and how much of the gain falls within the available basic rate band. However, calculating the actual liability involves more than subtracting the original purchase price from the selling price. Purchase expenses, selling costs, qualifying improvements, ownership shares, previous use of the property and available reliefs can all affect the final figure.

This guide explains how Capital Gains Tax on a second home works in the UK, how to calculate a gain, which costs may be deductible, when Private Residence Relief could apply and what property owners should do before and after completing a sale.

When Do You Pay Capital Gains Tax on a Second Home?

You may have to pay Capital Gains Tax, commonly shortened to CGT, when you dispose of a residential property that is not fully covered by Private Residence Relief. Typical examples include a holiday home, an additional residential property, a property previously used as your main home and, in many cases, a property that has been rented to tenants.

A disposal does not always mean an ordinary sale. Transfers and gifts can also create CGT consequences in certain circumstances. Transfers between spouses or civil partners who are living together have separate rules, so they should not automatically be treated in the same way as a normal sale to an unrelated buyer.

Capital Gains Tax Rates for Second Homes in 2026/27

For disposals from 6 April 2026, the standard Capital Gains Tax rates for individuals are 18% and 24%. The rate that applies depends on your taxable income and taxable gains.

If your taxable income leaves some of your Income Tax basic rate band unused, part of the taxable capital gain may fall within the 18% CGT rate. Any part above the available basic rate band is generally charged at 24%. Higher or additional rate Income Tax taxpayers will therefore normally find that their taxable gains are charged at 24%.

The calculation should be based on your circumstances for the relevant tax year rather than simply assuming that the whole gain will be taxed at one percentage.

The Capital Gains Tax Annual Exempt Amount

Individuals have an Annual Exempt Amount, which can reduce taxable capital gains for the year. For the 2026/27 tax year, the standard Annual Exempt Amount for an individual is £3,000.

This is not an allowance against the selling price of the property. It is applied after calculating gains, allowable losses and relevant reliefs. The exemption is also an annual amount rather than a separate £3,000 exemption for every property sold.

How to Calculate the Gain on a Second Home?

The basic calculation starts with the amount received for the property and deducts its allowable acquisition cost and qualifying expenses. A simplified formula is:

Sale proceeds − purchase cost − allowable buying and selling expenses − qualifying improvement expenditure = capital gain before reliefs and exemptions.

Consider a property purchased for £220,000 and later sold for £350,000. Assume qualifying buying and selling expenses total £12,000 and the owner spent £18,000 on an eligible capital improvement.

The initial gain would be £350,000 minus £220,000, £12,000 and £18,000, leaving £100,000. Reliefs, capital losses and the Annual Exempt Amount would then need to be considered before calculating the final CGT liability.

This example shows why using only the difference between purchase and sale prices can overstate the taxable amount.

Which Property Costs Can Reduce Your Capital Gain?

HMRC allows certain costs connected with acquiring, disposing of and improving a property to be taken into account. Depending on the circumstances, relevant expenses can include estate agent fees, legal fees connected with buying or selling the property and qualifying expenditure on permanent improvements.

An extension is a useful example of expenditure that may qualify because it improves the property rather than simply maintaining its existing condition. Ordinary decorating, repairs and routine maintenance do not normally qualify as capital improvement expenditure simply because money was spent on them.

Mortgage interest is also not treated as a deductible acquisition cost when calculating the capital gain. Keeping invoices, completion statements, legal bills and evidence of capital works throughout the ownership period can therefore make a major practical difference when the property is eventually sold.

What Happens If the Second Home Was Previously Your Main Residence?

A property described today as a second home may not have been a second home throughout the ownership period. If it genuinely served as your only or main residence for part of the time, Private Residence Relief may shelter a proportion of the gain.

For qualifying disposals, periods during which the property was genuinely your main residence can count toward the relief. In most cases, the final nine months of ownership can also qualify where the property was your only or main residence at some point during ownership.

This makes the property’s history important. Someone who lived in a property for several years before moving elsewhere may have a very different tax position from someone who purchased the property solely as an additional home and never occupied it as a main residence.

Owning Two Homes and Nominating a Main Residence

If you genuinely use two or more properties as residences, UK rules may allow you to nominate which one should be treated as your main residence for Private Residence Relief purposes. A nomination normally has to be made within two years of the date on which your particular combination of residences changes.

A property cannot simply be labelled a main residence for tax purposes without satisfying the residence requirements. Where no valid nomination has been made, which property is the main residence may instead be determined from the facts.

Married couples and civil partners living together can generally have only one main residence between them for Private Residence Relief purposes. Owners with multiple genuinely occupied homes should therefore review this issue long before a sale is planned rather than treating it as a last-minute calculation.

Second Homes That Have Been Let to Tenants

Rental history can complicate the CGT calculation, particularly where a property was previously the owner’s main home. Private Residence Relief may apply to qualifying occupation periods, but simply renting the property out does not normally make the entire gain exempt.

Letting Relief is considerably narrower than it was historically. Under the current rules, it is generally relevant where the owner shared occupancy with a tenant while the property was the owner’s main residence. Owners should therefore avoid relying on older explanations suggesting that a former home automatically receives a broad additional exemption simply because it was later rented out.

Jointly Owned Second Homes

Where a property is jointly owned, each owner normally calculates the gain attributable to their own share. This means two individuals selling a jointly owned property do not simply calculate one CGT liability for the property as a whole.

Each person’s ownership percentage, available capital losses, Annual Exempt Amount and taxable income can affect their individual tax position. As a result, two co-owners receiving equal shares of the proceeds could still have different CGT liabilities.

Reporting and Paying Capital Gains Tax After the Sale

For UK residential property where CGT is due, a UK resident will normally need to report the disposal and pay the estimated Capital Gains Tax within 60 days of completion. HMRC provides a Capital Gains Tax on UK property service for this purpose.

If you already complete Self Assessment, the disposal may also need to be included on your tax return. The short reporting window means it is sensible to collect purchase records, improvement invoices and sale documents before completion rather than waiting until after the property has been transferred.

Non-UK residents face additional reporting requirements and generally must report disposals of UK property even where there is no CGT to pay.

Practical Steps to Take Before Selling a Second Home

A useful approach is to prepare a property tax file before placing the home on the market. Find the original completion statement, purchase contract, legal invoices, improvement invoices, ownership documents and evidence showing when the property was occupied as a main residence, if relevant.

Then prepare an estimated gain using a realistic expected sale price. Check whether you have allowable capital losses from other disposals, whether Private Residence Relief might apply and whether the property is jointly owned. Doing this before exchange or completion gives you a clearer idea of the cash that should be reserved for tax and reduces the risk of discovering missing records during the 60-day reporting period.

Frequently Asked Questions

1. Do I always pay Capital Gains Tax when selling a second home?

No. CGT normally becomes relevant when there is a taxable gain after allowable costs, reliefs, losses and the Annual Exempt Amount have been considered. If the property has not increased sufficiently in value or available deductions eliminate the taxable gain, there may be no CGT to pay.

2. What is the CGT rate on a second home in the UK?

For individuals in the 2026/27 tax year, the standard CGT rates are 18% and 24%. The amount charged at each rate depends on your taxable income and the amount of unused basic rate band available after taking your income into account.

3. How much is the Capital Gains Tax allowance for 2026/27?

The standard Annual Exempt Amount for individuals is £3,000 for the 2026/27 tax year. It applies to qualifying net gains for the tax year rather than providing a separate exemption for every asset sold.

4. Can estate agent fees reduce my taxable gain?

Yes. Qualifying costs connected with selling a property, including estate agent and certain legal fees, can normally be included when calculating the gain. Accurate invoices and completion records should be retained as evidence.

5. Can renovation costs be deducted from the gain?

Some capital improvement expenditure can qualify, particularly where it adds to or enhances the property. Routine repairs, maintenance and ordinary decorating are generally different. The nature of the work and supporting records are important when deciding whether expenditure can be included.

6. Do I get Private Residence Relief on a second home?

Possibly, but only where the property satisfies the relevant rules. If it genuinely served as your only or main residence during part of your ownership, some of the gain may qualify for relief. A property that has always been used solely as an additional home will normally have a different treatment.

7. Does the final nine-month rule apply to a former main home?

In many cases, yes. If the property qualified as your only or main residence at some point during ownership, the final nine months can generally qualify for Private Residence Relief even if you were living elsewhere during that period. Special circumstances can affect the calculation.

8. How quickly must I report a taxable second-home sale?

Where CGT is due on a UK residential property, a UK resident generally has 60 days from completion to report the disposal and pay the estimated tax. Waiting for the normal Self Assessment deadline can therefore result in a late property return.

9. What happens if my second home is jointly owned?

Each owner normally calculates the gain relating to their ownership share. Their individual tax position is then considered separately, including their taxable income, Annual Exempt Amount, capital losses and any relief for which they personally qualify.

10. Should I get professional advice before selling?

Professional advice can be particularly useful when the property has been used as both a main residence and an additional home, has been rented out, has multiple owners, includes substantial improvement expenditure or has a complicated ownership history. A tax adviser can review the evidence and apply the rules to the specific facts rather than relying on a general estimate.

Conclusion

Capital Gains Tax on selling a second home in the UK depends on much more than the difference between the purchase price and the sale price. Allowable transaction costs, qualifying improvements, capital losses, the £3,000 Annual Exempt Amount and possible Private Residence Relief can all affect the final liability.

With CGT rates of 18% and 24% for individuals in 2026/27 and a 60-day reporting deadline for taxable UK residential property disposals, preparing the calculation and supporting records before completion can make the sale substantially easier to manage.