Can I Avoid Capital Gains Tax When Selling My Property?

If you are selling your only or main home, the answer is reassuringly simple: you almost certainly pay no Capital Gains Tax at all, because Private Residence Relief wipes out the gain automatically. There is nothing to claim and no form to file. Where CGT bites is on a property that has not been your main home throughout — a second home, a buy-to-let, or a house you inherited and never lived in. You cannot legally make that tax vanish, but you can often shrink it a great deal: by using both spouses' allowances, deducting every legitimate cost, claiming reliefs you are entitled to, and timing the sale sensibly. For 2026/27 the rates on residential property are 18% and 24%, with a £3,000 tax-free allowance per person.

First, the honest distinction: avoid versus reduce

"Avoiding" tax is a loaded word, so let me be plain about what is and isn't possible. If the property is genuinely your home, you are not avoiding anything — the law simply does not charge CGT on the sale of your main residence, full stop. That is Private Residence Relief doing its job, and it covers the overwhelming majority of house sales in this country.

If the property is not your main home, no amount of clever wording makes the tax disappear, and anyone promising otherwise is either mistaken or selling you a scheme that HMRC will unpick. What you can do — entirely legitimately — is make sure you pay the right amount and not a penny more. That means claiming every relief you qualify for, deducting every allowable cost, and structuring the timing and ownership sensibly. The difference between a well-organised sale and a careless one can be thousands of pounds. That is the game worth playing.

When you owe nothing: Private Residence Relief

Private Residence Relief (PRR) is the reason your ordinary home sale never triggers a tax bill. If you have lived in the property as your only or main residence for the entire time you owned it, the whole gain is exempt. You do not report it, you do not claim it, it just happens.

PRR gets more interesting — and more valuable — when your occupation was partial. Say you lived in a house for years, moved out, and later sold it. You get relief for the period you actually lived there plus the final nine months of ownership, regardless of whether you were living there at the end. Those last nine months are treated as if you were still in residence, which is a genuine gift when a sale drags on. (For someone who is disabled or has moved into a care home, that final period extends to 36 months.)

The relief is apportioned over your total ownership. If you owned a house for ten years, lived in it for the first seven, and it was let for the last three, then seven years plus the final nine months are covered by PRR, and only the uncovered slice of the gain is potentially taxable. Get the dates right, because HMRC certainly will.

When CGT applies: the properties that catch people out

You will face a potential CGT bill when you sell a UK residential property that has not been your main home throughout your ownership. In practice that means:

• A second home or holiday home — a property you own alongside your main residence.
• A buy-to-let — the classic case, where the whole gain is exposed because you never lived there.
• An inherited property you did not move into. Your "cost" for CGT is usually the probate value at the date of death, and any rise since then can be taxable when you sell.
• A former home you later let out, where the letting period breaks the run of PRR.

One quiet trap worth flagging: on an inherited property, people assume the gain is measured from what the deceased originally paid. It isn't. It is measured from the value at the date of death — the probate value. If probate valued the house conservatively and it has since risen, that uplift is your taxable gain. It is a common and expensive surprise, and it is why getting the probate valuation right matters as much as the eventual sale price.

The rates and the shrinking allowance

For the 2026/27 tax year, CGT on residential property is charged at two rates. If your total taxable income plus the gain keeps you within the basic-rate band (up to £50,270), the gain is taxed at 18%. Anything falling into the higher-rate band is taxed at 24%. Most people selling a second property find at least part of the gain pushed into the 24% band, because the gain itself stacks on top of their income.

The Annual Exempt Amount — the slice of gains you can make tax-free each year — is now just £3,000 per person. It is worth pausing on how dramatically that has fallen: it was £12,300 as recently as 2022/23, then £6,000, and now £3,000. If you have been sitting on a rental thinking "the allowance will soak most of it up", that plan is five years out of date. The tax-free cushion is a tenth of what it once was, which makes every other lever below matter far more.

2026/27 figure	Residential property
Basic-rate band CGT rate	18%
Higher / additional-rate CGT rate	24%
Annual Exempt Amount (per person)	£3,000
Income threshold for higher rate	£50,270
Reporting & payment deadline	60 days from completion
Transfers between spouses / civil partners	No gain, no loss (tax-free)

A worked example, start to finish

Numbers make this concrete. Suppose you and your spouse jointly own a buy-to-let. You bought it for £180,000 and are selling for £290,000. On the face of it, that is a £110,000 gain. But the raw figure is not what you are taxed on.

Start deducting. When you bought, you paid £6,500 in stamp duty and £1,500 in legal and survey fees — £8,000 of acquisition costs. Over the years you added a new kitchen and a rear extension, genuine capital improvements totalling £15,000 (routine repairs and repainting do not count — only improvements that add value). Selling costs — estate agent and conveyancing — come to £5,000. Total allowable deductions: £28,000. Your gain falls from £110,000 to £82,000.

Because you own it jointly, the gain splits in two: £41,000 each. Each of you deducts the £3,000 Annual Exempt Amount, leaving £38,000 taxable per person. If you are both higher-rate taxpayers, the tax is 24% of £38,000 — £9,120 each, or £18,240 between you. Had you owned it in one name only, you would have used a single £3,000 allowance against the full £82,000 gain, and more of it would have been taxed at 24% — comfortably more tax for the sake of how the deeds were drawn up years earlier. That single structural difference is why ownership matters.

Legitimate ways to reduce the bill

Here is where careful sellers save real money. None of this is aggressive or borderline — it is simply using the rules as intended.

Use both allowances. A married couple or civil partners have two £3,000 exemptions. If a property is in one spouse's sole name, transferring a share to the other before sale is tax-free (spouse transfers are "no gain, no loss") and unlocks a second allowance and, potentially, a lower tax band. This needs doing properly and before the sale, so take advice early.

Deduct everything you are entitled to. Acquisition costs (stamp duty, legal fees, survey), disposal costs (estate agent, conveyancing) and capital improvements all come off the gain. Dig out the paperwork. A £20,000 extension you forgot to claim is roughly £4,800 of tax at 24%.

Offset capital losses. Losses on other chargeable assets — shares, a second property sold at a loss — can be set against the gain in the same year, and unused losses can be carried forward if you report them.

Time the disposal. Because CGT rates hinge on your income, selling in a year when your income is lower — a career break, retirement, a gap between jobs — can drop more of the gain into the 18% band. Splitting a completion across two tax years is rarely practical with a single house, but the timing of when in the tax year you sell can still matter for how the gain stacks on your income.

Claim PRR and, where it applies, lettings relief. If the property was ever genuinely your main home, PRR shelters that period plus the final nine months. Lettings relief still exists but was sharply cut back in April 2020 — it now only applies where you were living in the property at the same time as your tenant (a lodger arrangement, essentially). If you moved out and let the whole place, assume lettings relief no longer helps you.

The 60-day rule you cannot ignore

This one trips people up because it is newer and tighter than most expect. If you sell a UK residential property and there is CGT to pay, you must report the disposal and pay the tax within 60 days of completion — not by the following January's self-assessment deadline, but within 60 days. You do it through HMRC's online "Capital Gains Tax on UK property" service, using a Property Account you set up for the purpose.

Miss the deadline and HMRC charges a late-filing penalty even if the tax itself is paid, with further penalties and interest stacking up the longer it runs. Sixty days sounds generous until completion day arrives amid the chaos of a move and the clock is already ticking. If your sale will produce a taxable gain, line up the figures — and ideally an accountant — before you complete, not after. There is no CGT to report where the whole gain is covered by PRR, but if any is taxable, the 60-day duty applies.

When a slow, tax-perfect sale isn't the priority

A fair counterpoint, because tax is not the only thing that matters. Sometimes the property you are trying to sell is a burden — an inherited house sitting empty and costing you council tax and insurance every month, or a problem rental you simply want gone. In those cases, agonising over shaving the last few hundred pounds off a CGT bill can be a false economy if it keeps you tied to a property for another six months of empty-home costs and worry.

Do the sums on the whole picture. An open-market sale takes, on average, sixteen to twenty-four weeks and around one in four falls through, and every one of those weeks an empty inherited property is draining money. A genuine cash sale completing in seven to twenty-eight days may net a little less on price, but if it ends months of standing costs and stress, it can be the better financial decision overall — CGT included. The tax is calculated on the actual sale price either way, so a lower cash price also means a smaller gain and therefore a smaller CGT bill. If that trade-off sounds relevant, it is worth understanding how reputable cash house buyers operate, and if the property came to you through probate, our guide to selling an inherited property walks through the specifics.

Whatever route you choose, get the numbers straight first. A realistic valuation of what your property is worth is the foundation for both the sale and the tax calculation, and if speed is your priority you can compare a fast house sale against the open market. Reputable buyers worth considering are set out in our review of the best house-buying companies.

If you own two homes: nominating your main residence

People with two properties — perhaps a city flat for the working week and a family house at weekends — have a lever most never use. You can formally tell HMRC which of the two is your "main residence" for CGT purposes, by making a nomination in writing within two years of the combination of properties changing. Get this right and you steer PRR towards whichever home has the larger expected gain.

The rules here are genuinely technical and the two-year window is unforgiving, so this is one area where a short conversation with an accountant pays for itself many times over. What you should not do is assume the property you spend the most nights in is automatically your main residence in HMRC's eyes — without a nomination, it becomes a question of fact that can go against you. If you have two homes and a sale on the horizon, put this on your list now, not after completion when the window may already have closed.

Selling or gifting to family

A quiet catch that snares well-meaning parents: if you sell or give a property to a family member at a "mates' rates" price, HMRC still calculates CGT as if you sold it at full market value. Selling your daughter a £250,000 flat for £150,000 does not reduce your gain to the £150,000 figure — the taxman substitutes the £250,000 market value, because transfers between "connected persons" are always valued at arm's length. You could end up with a tax bill larger than the cash you actually received.

The only transfers that escape this are between spouses and civil partners, which pass at no gain and no loss. Everything else — children, siblings, friends — is treated at market value. If you are thinking of passing property to the next generation, that is a decision with CGT and inheritance tax threads tangled together, and it deserves proper planning rather than a kitchen-table handshake.

Keep records like your refund depends on it — because it does

Almost every case of overpaid CGT I have seen comes down to the same thing: missing paperwork. You cannot deduct a £14,000 loft conversion from your gain if you cannot evidence it, and a decade later the builder's invoice is long gone. HMRC is entitled to ask for proof, and "I definitely spent it" is not proof.

From the day you buy any property that is not your main home, start a simple folder — physical or digital — and keep the completion statement, the stamp duty receipt, solicitor invoices, and every invoice for improvement work. Note the dates you lived there, if you ever did, because PRR turns on exactly those dates. When you come to sell, that folder is the difference between a gain calculated in your favour and one calculated in HMRC's. It is the cheapest tax planning there is, and it costs nothing but a little discipline.

Frequently asked questions

Do I pay CGT when I sell my own home?

Almost never. Private Residence Relief exempts the gain on your only or main home, so a standard home sale produces no CGT bill and nothing to report. The relief can be reduced only if you let the property out, used part of it exclusively for business, or the grounds are very large.

How much is CGT on a second property in 2026/27?

Residential property gains are taxed at 18% within your basic-rate band and 24% above it. You get a £3,000 tax-free allowance first, and you deduct purchase costs, selling costs and capital improvements before the rate is applied.

Can I really avoid CGT on a buy-to-let?

You cannot make it disappear, but you can legitimately reduce it — by using both spouses' allowances, deducting every allowable cost, offsetting losses, and claiming any PRR for periods it was your home. Be wary of any "scheme" that promises to eliminate the tax entirely; HMRC challenges those.

What can I deduct from the gain?

Stamp duty and legal fees paid when you bought, estate agent and conveyancing fees when you sell, and the cost of capital improvements such as an extension or new kitchen. Ordinary repairs, maintenance and mortgage interest are not deductible against CGT.

When do I have to pay it?

Within 60 days of completion, reported through HMRC's online Capital Gains Tax on UK property service. This is much sooner than the self-assessment deadline, and late filing brings penalties even if you pay the tax on time.

How is CGT worked out on an inherited house?

Your base cost is usually the probate value at the date of death, not the original purchase price. Any increase between that value and your sale price is the gain. If you never lived in the property, there is no PRR, so keeping the probate valuation accurate is important.

What if I moved abroad before selling?

Non-UK residents still pay CGT on the disposal of UK residential property, and the 60-day reporting duty applies whether or not there is tax to pay. The gain is generally measured from the property’s value in April 2015 (when the rules for non-residents changed) rather than the original purchase price, which can soften the bill. If you have left the UK and are selling a property here, get advice before you complete — the reporting obligation catches many expats off guard.

This guide was reviewed by Lisa Hayes, founder of Ready Steady Sell and an independent home-selling specialist with more than a decade helping UK homeowners sell quickly and fairly. It is general information, not personal tax advice — Ready Steady Sell is not a tax adviser, and for your own figures you should speak to a qualified accountant or check the position directly with HMRC at gov.uk. When you are ready to sell, Ready Steady Sell matches you only with checked, vetted buyers, many of them members of the National Association of Property Buyers (NAPB) and covered by The Property Ombudsman (TPO). For plain-English definitions of any term above, see our property jargon explained guide, and the wider market figures on our industry data page.