How to reduce capital gains tax when you sell a rental property

Capital gains tax on residential property is UK-wide, so Scottish and Welsh income-tax bands do not change the CGT rate. The practical levers are timing, ownership, allowable costs, losses and private residence relief — not a single loophole that makes a rental-property gain disappear.

How do you reduce capital gains tax when you sell a rental property?

You reduce capital gains tax when selling a rental or buy-to-let property by deducting allowable costs and losses, using the £3,000 annual exempt amount, timing the exchange of contracts, using both spouses’ or civil partners’ allowances where ownership is genuinely shared, and claiming private residence relief only for periods that qualify. The core rates for individuals are 18% or 24%: TCGA 1992 says, “Chargeable gains accruing in a tax year to an individual are charged to capital gains tax at a rate of 18% or 24%,” and “The annual exempt amount for a tax year is £3,000.” There is no general “Capital Gains Tax loophole” for a let property, but living-together spouse or civil-partner transfers are normally no gain/no loss, and same-year allowable losses reduce gains. Private residence relief can remove or reduce the gain only where the property was your only or main residence for qualifying periods; since 2020, lettings relief is very narrow and “is not available for any period during which the whole dwelling-house was let out.”

What costs can you deduct from the gain?

You can deduct the purchase cost, qualifying improvement costs still reflected in the property when sold, title costs, and sale costs such as estate-agent and conveyancing fees, but not mortgage interest or ordinary repair costs already dealt with as rental expenses. TCGA 1992 restricts allowable deductions and includes “expenditure wholly and exclusively incurred on the asset… for the purpose of enhancing the value of the asset, being expenditure reflected in the state or nature of the asset at the time of the disposal.” That means an extension, loft conversion or structural improvement may reduce the CGT gain; repainting, routine maintenance and like-for-like repairs usually do not. Selling costs matter because they are often large: Which? reported that in 2025 “the average seller paid roughly 1.3%, including VAT” in estate-agent fees, while HomeOwners Alliance put the 2026 average at “1.42% including VAT.” Accountant fees for calculating the CGT bill are not normally deductible: HMRC says, “fees for the computation of liability are not allowable.”

Can you reduce the bill by selling properties in different tax years?

You can reduce the bill by exchanging contracts for different properties in different tax years, because each tax year has its own £3,000 annual exempt amount, but completion controls the 60-day reporting deadline and exchange controls the CGT tax year. HMRC says, “The AEA relates to one tax year only,” and “If it is not used it cannot be carried forward or back and added to the AEA for subsequent or preceding tax years.” The key trap is the clock: TCGA 1992 says that where an asset is sold under a contract, the disposal is made when “the contract is made,” not when it is later conveyed or transferred. For a normal property sale, that usually means exchange of contracts sets which tax year’s allowance and rates apply. Separately, GOV.UK says, “You must report and pay any Capital Gains Tax due on UK residential property within 60 days of completing the sale of the property.” Staggering portfolio sales can therefore help, but only if the exchanges fall on the intended sides of 5 April.

Should you sell before the Budget in case capital gains tax rates change?

You should sell before the Budget only if the sale already makes commercial sense, because selling now crystallises a real 18% or 24% residential-property CGT bill to guard against a rate rise that may not happen. The current residential-property rates were left unchanged in Autumn Budget 2024: the government said, “No changes will be made to the 18% and 24% rates of Capital Gains Tax that apply to residential property gains.” Speculation still affects behaviour; private-client advisers reported ahead of the 28 October 2026 Budget that “For some looking to crystallise CGT this may mean fast-tracking of a sale planned for the near future.” But a rushed sale can cost more in price, voids, mortgage penalties or lost rent than it saves in tax. The hard timing rule is exchange, not completion: TCGA 1992 dates the disposal to when the contract is made, “and not, if different, the time at which the asset is conveyed or transferred.”

Can you avoid capital gains tax by moving back into your rental property?

You cannot usually avoid all capital gains tax just by moving back into a rental property, but a genuine period of living there as your only or main residence can increase private residence relief and reduce the taxable gain. HMRC’s 2026 helpsheet is blunt: “If the dwelling house has not always been your only or main residence, you will need to split the gain.” A token stay is not enough; HMRC says that before and after a qualifying absence “the dwelling-house must be its owner’s home and not merely occupied for a temporary purpose,” and its manual quotes the Court of Appeal principle that “Temporary occupation at an address does not make a man resident there.” Moving back is most useful where the property was once your home, then let, and you genuinely reoccupy it before sale. It does not revive lettings relief for whole-property letting, because HMRC says, “Letting relief does not apply where the whole of the dwelling house was let for a time.”

What is the 3-year rule for capital gains tax?

The 3-year rule for capital gains tax is a still-live private residence relief absence rule, not the old 36-month final-period exemption renamed: up to three years of absence for any reason can count as residence if the statutory conditions are met and you actually live in the home again afterwards. TCGA 1992 refers to “a period of absence not exceeding 3 years (or periods of absence which together did not exceed 3 years),” and HMRC explains that “You may treat as residence periods of absence, for any purpose, which do not exceed three years in total, if the conditions set out in CG65046 are fulfilled.” The important condition is return: HMRC says, “The period of absence must be followed by an actual period of use of the dwelling-house as its owner’s only or main residence.” The final 9-month rule does not stand in for moving back. This rule is valuable for former homes that became rentals, but it does not help a property that was never genuinely your residence.

What is the 36-month rule for Capital Gains Tax on property?

The general 36-month Capital Gains Tax final-period rule is dead for most property sellers: for disposals on or after 6 April 2020, the final private-residence period is 9 months, with 36 months retained only for disabled people or care-home residents who meet the conditions. HMRC says, “For disposals on or after 6 April 2020 the final period of ownership that qualifies for relief is 9 months, unless the disposal is by disabled persons or persons in care homes etc. and s225E TCGA92 applies.” That final period can still be useful because GOV.UK says, “The final 9 months of your period of ownership always qualify for relief, regardless of how you use the property in that time, as long as the dwelling house has been your only or main residence at some point.” The exception is narrow: “If you’re a disabled person or a resident in a care home the final 36 months of ownership may qualify for relief if you do not have any other relevant right in relation to a private residence.”

Do you still pay if you sell and reinvest in another property?

You usually still pay capital gains tax if you sell a rental property and reinvest the proceeds in another house or buy-to-let, because UK residential-property CGT is not automatically rolled over into a replacement dwelling. GOV.UK says, “You may have to pay Capital Gains Tax if you make a profit (‘gain’) when you sell (or ‘dispose of’) property that’s not your home,” and the listed no-tax routes include gifts to a spouse, civil partner or charity, not buying another property. Rollover relief is aimed at trade assets: TCGA 1992 says the new asset must be acquired “for the purpose of their use in the trade,” and HMRC says letting land or buildings on exclusive occupation “is not normally a relevant asset of the owner for the purposes of the owner’s trade.” This now matters even more for holiday lets: HMRC says, “From 6 April 2025… furnished holidays lettings (FHLs) are no longer treated as a trade.” Reinvestment may be good investment planning, but it is not a buy-to-let CGT escape.

How do you reduce capital gains tax on a second home rather than a rental?

You reduce capital gains tax on a second home mainly through private residence relief planning, a timely main-residence nomination, allowable costs, losses and the £3,000 annual exempt amount; the CGT rates are not lower just because the property is a second home rather than a rental. The government says residential-property CGT rates “that apply to residential property disposals (18% and 24%) will remain unchanged,” and GOV.UK gives the 2026–27 allowance as £3,000. The second-home distinction matters because a property actually used as a residence may qualify for a main-residence election, while a pure buy-to-let never occupied as a home does not. GOV.UK says, “Your nomination must be made within 2 years of the date you first have a particular combination of residences,” and HMRC adds that the relevant date is not always purchase: it can be “the date on which the dwelling-house was first used as a residence.” Private residence relief is also blocked where the dwelling was acquired wholly or partly to realise a gain on disposal.

Last reviewed August 2026.

Sources

• TCGA 1992 s.1K — “The annual exempt amount for a tax year is £3,000.” Source
• TCGA 1992 s.1H — “Chargeable gains accruing in a tax year to an individual are charged to capital gains tax at a rate of 18% or 24%.” Source
• TCGA 1992 s.1I — “If any of an individual's income for a tax year is chargeable to income tax at a higher income tax rate, gains accruing to the individual in the tax year are charged at the rate of 24%.” Source
• TCGA 1992 s.1J — “In the application of section 1I in the case of any individual it is to be assumed that the individual is not a Scottish or Welsh taxpayer.” Source
• TCGA 1992 s.58 — “If an individual (“A”) disposes of an asset to another individual (“B”) in circumstances where any of subsections (1B) to (1D) applies, A and B are to be treated as if B acquired the asset from A for a consideration of such amount as would secure that on the disposal neither a gain nor a loss would accrue to A.” Source
• TCGA 1992 s.223 — “No part of a gain to which section 222 applies shall be a chargeable gain if the dwelling-house or part of a dwelling-house has been the individual’s only or main residence throughout the period of ownership, or throughout the period of ownership except for all or any part of the last 9 months of that period.” Source
• HMRC CG64710 — “This further relief is not available for any period during which the whole dwelling-house was let out.” Source
• GOV.UK Capital Gains Tax losses — “When you report a loss, the amount is deducted from the gains you made in the same tax year.” Source
• TCGA 1992 s.38 — “Except as otherwise expressly provided, the sums allowable as a deduction from the consideration in the computation of the gain accruing to a person on the disposal of an asset shall be restricted to Source
• TCGA 1992 s.38 — “(b)the amount of any expenditure wholly and exclusively incurred on the asset by him or on his behalf for the purpose of enhancing the value of the asset, being expenditure reflected in the state or nature of the asset at the time of the disposal, and any expenditure wholly and exclusively incurred by him in establishing, preserving or defending his title to, or to a right over, the asset,” Source
• TCGA 1992 s.38 — “Except as provided by section 40, no payment of interest shall be allowable under this section.” Source
• HMRC CG15250 — “Otherwise, fees for the computation of liability are not allowable.” Source
• Which? estate-agent fees — “In 2025, Rightmove reports that the average seller paid roughly 1.3%, including VAT.” Source
• HomeOwners Alliance estate-agent fees — “The average estate agent fee in 2026 is 1.42% including VAT.” Source
• HMRC CG18000 — “The AEA relates to one tax year only.” Source
• HMRC CG18000 — “If it is not used it cannot be carried forward or back and added to the AEA for subsequent or preceding tax years.” Source
• TCGA 1992 s.28 — “Subject to section 22(2), and subsection (2) below, where an asset is disposed of and acquired under a contract the time at which the disposal and acquisition is made is the time the contract is made (and not, if different, the time at which the asset is conveyed or transferred).” Source
• GOV.UK report and pay CGT on UK property — “You must report and pay any Capital Gains Tax due on UK residential property within 60 days of completing the sale of the property.” Source
• Autumn Budget 2024 OOTLAR — “No changes will be made to the 18% and 24% rates of Capital Gains Tax that apply to residential property gains.” Source
• GOV.UK CGT rates — “If you’re a higher or additional rate taxpayer, you’ll pay 24% on your gains from 6 April 2026.” Source
• Blick Rothenberg — “Selling an asset now crystallises a real tax liability at 18% or 24% to protect against a tax increase that may never happen.” Source
• Charles Russell Speechlys — “For some looking to crystallise CGT this may mean fast-tracking of a sale planned for the near future.” Source
• HMRC HS283 2026 — “If the dwelling house has not always been your only or main residence, you will need to split the gain.” Source
• HMRC CG65050 — “Both before and after the period of absence the dwelling-house must be its owner’s home and not merely occupied for a temporary purpose.” Source
• HMRC CG64460 — “Temporary occupation at an address does not make a man resident there.” Source
• HMRC HS283 2026 — “Letting relief does not apply where the whole of the dwelling house was let for a time.” Source
• HMRC CG64985 — “For disposals on or after 6 April 2020 the final period of ownership that qualifies for relief is 9 months, unless the disposal is by disabled persons or persons in care homes etc. and s225E TCGA92 applies (see CG64986).” Source
• HMRC HS283 2026 — “The final 9 months of your period of ownership always qualify for relief, regardless of how you use the property in that time, as long as the dwelling house has been your only or main residence at some point.” Source
• HMRC HS283 2026 — “If you’re a disabled person or a resident in a care home the final 36 months of ownership may qualify for relief if you do not have any other relevant right in relation to a private residence.” Source
• TCGA 1992 s.223 — “(a)a period of absence not exceeding 3 years (or periods of absence which together did not exceed 3 years), and in addition” Source
• HMRC CG65040 — “You may treat as residence periods of absence, for any purpose, which do not exceed three years in total, if the conditions set out in CG65046 are fulfilled.” Source
• HMRC CG65050 — “The period of absence must be followed by an actual period of use of the dwelling-house as its owner’s only or main residence.” Source
• GOV.UK tax when you sell property — “You may have to pay Capital Gains Tax if you make a profit (‘gain’) when you sell (or ‘dispose of’) property that’s not your home, for example:” Source
• GOV.UK tax when you sell property — “You do not usually need to pay tax on gifts to your husband, wife, civil partner or a charity.” Source
• TCGA 1992 s.152 — “This section shall not apply unless the acquisition of, or of the interest in, the new assets was made for the purpose of their use in the trade, and not wholly or partly for the purpose of realising a gain from the disposal of, or of the interest in, the new assets.” Source
• HMRC CG60281 — “The letting of land or buildings on terms that give the tenant exclusive occupation is not normally a relevant asset of the owner for the purposes of the owner’s trade.” Source
• HMRC CG60287 — “From 6 April 2025 (1 April 2025 for Corporation Tax), furnished holidays lettings (FHLs) are no longer treated as a trade.” Source
• GOV.UK CGT rates of tax — “The rates of Capital Gains Tax that apply to residential property disposals (18% and 24%) will remain unchanged.” Source
• GOV.UK CGT rates — “For the 2026 to 2027 tax year the allowance is £3,000, which leaves £9,600 to pay tax on.” Source
• HMRC HS283 2026 — “Your nomination must be made within 2 years of the date you first have a particular combination of residences.” Source
• HMRC CG64495 — “Where a dwelling-house is acquired, the date on which there is a new combination of residences will not necessarily be the date of acquisition, it will be the date on which the dwelling-house was first used as a residence.” Source
• TCGA 1992 s.224 — “Sections 223 and 223B shall not apply in relation to a gain if the acquisition of, or of the interest in, the dwelling-house or the part of a dwelling-house was made wholly or partly for the purpose of realising a gain from the disposal of it, and shall not apply in relation to a gain so far as attributable to any expenditure which was incurred after the beginning of the period of ownership and was incurred wholly or partly for the purpose of realising a gain from the disposal.” Source