House Sold for More (or Less) Than the Probate Value — What HMRC Expects

Nothing happens automatically. The sale price does not replace the probate value on the Inheritance Tax account, and there is no rule that makes the estate pay more Inheritance Tax simply because the property later fetched a higher figure. What usually follows instead is Capital Gains Tax: the estate has disposed of an asset it is treated as having acquired at the date of death, and the difference between that acquisition value and the net sale proceeds is a chargeable gain.

The exception is where the sale price suggests the original figure was wrong at the date of death, rather than merely out of date. If a house sells three weeks after death for a great deal more than the reported value, in a flat market, with no works carried out and no unusual buyer, HMRC and the Valuation Office Agency may reasonably ask how the death value was reached. A properly marketed arm's-length sale shortly after death is often the single strongest piece of evidence of what a property was worth at that date.

So the useful question is not whether the property sold for more, but why. A rising market, a special purchaser, competitive bidding after a long marketing campaign, or genuine improvement works all explain a higher price without implying that the date-of-death figure was understated. An unexplained gap on a quick sale in a static market is a different conversation.

There are two possible routes, and which one is open depends almost entirely on whether Inheritance Tax was actually chargeable on the property. Where it was, and an interest in land is sold within four years of the death for less than the value on which that tax was calculated, the appropriate person can claim loss on sale relief on form IHT38. The sale price is substituted for the death value in the Inheritance Tax calculation and the overpaid tax is repaid.

Where no Inheritance Tax was chargeable — an excepted estate below the nil-rate band, or an estate passing to an exempt surviving spouse or civil partner — there is no tax to reclaim and the relief has nothing to bite on. In that situation the fall in value may instead produce a capital loss, which is a much weaker form of relief and is often wasted entirely.

Neither route is automatic. Loss on sale relief has to be claimed, on the right form, by the right person, within the statutory time limit, and the conditions are strict. Selling below the probate value is common and is not by itself evidence that the original valuation was wrong: markets fall, a property marketed in December after a death in June meets a thinner pool of buyers, and probate sales frequently complete after months standing empty, which affects both the condition of the house and buyer confidence in it.

Almost every question in this area turns on one word. A value is "ascertained" when it has actually been established for Inheritance Tax purposes — when Inheritance Tax was chargeable on the estate, the property's value had to be determined in order to work out that tax, and it was determined, whether by HMRC accepting the figure submitted or by negotiation with the Valuation Office Agency.

Where a value has been ascertained in that way, section 274 of the Taxation of Chargeable Gains Act 1992 fixes it as the market value at the date of death for Capital Gains Tax as well. The estate and the beneficiaries are bound by it. They cannot later argue that the house was really worth more at death in order to reduce a gain.

Where no Inheritance Tax was chargeable, nothing is ascertained, and section 274 never engages. This surprises a great many executors, because the figure still appears on the paperwork and still looks official. It is not binding for Capital Gains Tax. The same is true where a value was reported but made no difference to the tax due, so HMRC had no reason to examine it, and where a figure was entered on the account as an estimate and never finalised.

During the administration period the estate is treated as a separate person for Capital Gains Tax. The personal representatives are treated as acquiring the deceased's assets at their market value at the date of death, with no gain arising on the death itself. When they later sell, the gain is measured from that acquisition value.

That acquisition value is the ascertained figure where one exists. Where no value was ascertained, it is the actual open market value at the date of death, which may need to be established and agreed with HMRC — and which is not necessarily the number that was written on the probate paperwork.

What can and cannot be deducted in the computation is a common source of error, particularly around the costs of getting the property ready for sale:

Personal representatives have an annual exempt amount of their own. It is the same figure as an individual's, and it is available for the tax year in which the death occurred and the two tax years following. After that the estate has no annual exemption at all, which is a strong argument against letting an administration drift. The allowance has been reduced sharply in recent years, so check the amount applying to the tax year of the disposal rather than relying on an older figure.

Personal representatives pay a single flat rate on estate gains rather than an individual's banded rates, and that rate has changed recently. Check the current rate on GOV.UK for the date of the disposal before computing anything.

Deadlines matter more here than executors expect. Where a disposal of UK residential property produces Capital Gains Tax, personal representatives must file a UK property return and pay the tax within 60 days of completion — not at the end of the tax year. That obligation sits alongside, not instead of, reporting the gain in the estate's tax return where one is required.

Selling estate assets above a certain value in a single tax year is also one of the triggers that makes an estate "complex" and brings it within HMRC's registration requirements. The threshold has been set at £500,000 of assets sold in one tax year; confirm the current criteria before assuming a straightforward estate stays straightforward after a property sale.

Where a gain is in prospect, personal representatives frequently consider appropriating the property to the residuary beneficiaries before it is sold. A beneficiary who receives estate property is treated as acquiring it at the same value the personal representatives are treated as acquiring it — the date-of-death value — with no disposal by the estate at that point.

The attraction is arithmetic. Each beneficiary has their own annual exempt amount, and an individual with basic-rate band available may pay a lower rate than the estate would. A beneficiary who has occupied the property as their only or main residence may also have private residence relief available on part or all of the gain. Where several beneficiaries share the residue, the combined allowances can absorb a material part of the gain.

There are real traps. The appropriation has to be a genuine appropriation, properly documented and completed before the contract for sale, not a note written afterwards. It changes who is selling, and that can affect an Inheritance Tax loss on sale claim, because the relief belongs to the person liable for the Inheritance Tax attributable to the land. It may also complicate matters where a beneficiary is a minor, is bankrupt, or lives abroad. Where an Inheritance Tax claim and a Capital Gains Tax saving are both in play, take advice before doing either.

The mirror image applies to losses. Capital losses realised by personal representatives can be set against estate gains in the same or a later tax year of the administration, but they cannot be handed to the beneficiaries and are simply lost when the administration ends. A loss realised by a beneficiary belongs to that beneficiary and can be carried forward against their own future gains.

Loss on sale relief for land is set out in section 191 of the Inheritance Tax Act 1984, extended to sales in the fourth year by section 197A. It exists because Inheritance Tax is charged on a hypothetical date-of-death value, and it would be harsh to tax an estate on a figure the property demonstrably could not achieve when it was actually sold.

The effect of a successful claim is to substitute the gross sale price for the death value in the Inheritance Tax calculation, so the tax is recomputed on the lower figure and the difference is repaid. The claim is made on form IHT38.

The conditions are precise, and missing any one of them defeats the claim:

A successful loss on sale claim rewrites the ascertained value. The substituted sale price becomes the value established for Inheritance Tax, and therefore also the acquisition cost for Capital Gains Tax. Since the acquisition cost then equals the disposal proceeds, no capital loss arises on the same fall in value. The two reliefs are alternatives, not a pair.

In most estates the Inheritance Tax relief is worth considerably more, because Inheritance Tax is charged at a higher rate than Capital Gains Tax and the repayment is immediate rather than dependent on finding future gains to absorb a loss. That is the usual answer, but it is not the automatic one.

A capital loss can be the better outcome where the estate has other chargeable gains to shelter in the same or a later year of the administration, or where a beneficiary who will realise the loss personally expects significant gains of their own. Where the sums are meaningful, the comparison is worth running properly before the IHT38 is submitted, because the choice is difficult to unwind afterwards.

HMRC refers property valuations on Inheritance Tax accounts to the Valuation Office Agency, which can review the declared figure and propose a different one. A sale shortly after death is exactly the sort of evidence that prompts a review, because it shows what a real buyer paid rather than what a valuer predicted.

There is, however, no rule that turns the sale price into the death value. The statutory basis remains the price the property might reasonably have been expected to fetch on the open market at the date of death, and a later sale is evidence of that figure rather than a substitute for it. Where the sale price is higher, the executor's task is to show why the difference arose after death rather than because the original figure was too low.

The explanations HMRC is used to seeing, and will accept where the evidence supports them, include:

A rising market does not create an obligation to volunteer a revised valuation. Discovering that the reported figure was wrong at the date of death does. Section 217 of the Inheritance Tax Act 1984 requires a person who has delivered an account and later discovers it is defective in a material respect to deliver a further account within six months of that discovery. Corrections to an estate already reported on an IHT400 are made on a corrective account, form C4.

The same principle applies in reverse to an estate treated as excepted. If the true values mean the estate was never within the excepted-estate conditions at all — because a property was materially undervalued and the estate in fact exceeded the nil-rate band — a full Inheritance Tax account becomes due and there is a deadline for delivering it once the position is known.

HMRC's window for raising a determination is broadly four years from the relevant date in ordinary cases, extending to six years where a loss of tax was brought about carelessly and twenty years where it was deliberate. Confirm the current limits before assuming an old estate is closed. Clearance obtained at the end of an administration does not protect personal representatives where the relevant facts were not disclosed, and personal representatives who distribute an estate before the tax position is settled can find themselves personally exposed.

Most estates in the United Kingdom pay no Inheritance Tax. They qualify as excepted estates — typically because the gross value falls below the nil-rate band, or because the estate passes largely to a surviving spouse, civil partner or charity within the published limits — and no Inheritance Tax account is delivered. HMRC never sees the property figure, never agrees it, and never ascertains it.

Three consequences follow, and all three catch executors out. There is no Inheritance Tax to reclaim if the house later sells at a loss, so section 191 relief is unavailable however large the fall. There is no ascertained value binding anyone for Capital Gains Tax, so the acquisition cost is the actual open market value at the date of death, established on the evidence. And a casual, conservative figure written on the probate paperwork does not protect the estate: it simply becomes the number the estate has to justify, or displace, when a gain is computed.

That cuts both ways, and the second point is more useful than most executors realise. Where a property was reported at a low round figure and then sold for considerably more, the estate is not obliged to treat the low figure as its base cost. It is entitled to establish the true market value at the date of death — but only if it can evidence it, which is far easier with a dated valuation prepared at the time than with a reconstruction attempted two years later.

For an estate near the threshold that contains a property likely to be sold, a properly evidenced date-of-death valuation therefore does double duty. It supports the probate figures, and it fixes the Capital Gains Tax base cost with contemporaneous evidence rather than hindsight.

Land is not the only asset with a loss relief. Section 179 of the Inheritance Tax Act 1984 provides an equivalent for qualifying investments — broadly, shares and securities quoted on a recognised stock exchange, and holdings in authorised unit trusts and open-ended investment companies — sold by the appropriate person within twelve months of the death. The claim is made on form IHT35, and the same aggregation principle applies: all qualifying sales in the period are brought in together, so gains on some holdings reduce the losses on others.

There is no equivalent relief for chattels. If the deceased's furniture, jewellery or paintings sell for less than the probate figures, the Inheritance Tax position stands as reported unless the original values were actually wrong at the date of death, in which case the corrective account route applies rather than a relief claim.

For Capital Gains Tax, chattels have their own protection. A gain on a chattel sold for £6,000 or less is exempt, with marginal relief just above that figure, and private motor cars are exempt outright. The catch is that a set of items sold to the same person, or to connected persons, is treated as a single chattel — so six dining chairs sold individually are not six separate exemptions.

The table below sets out the common situations and where each one lands on both taxes. It assumes a straightforward administration; estates with trusts, foreign assets, business property or agricultural property need advice on their own facts.

Most of the difficulty in this area is created before anyone knows there is a problem — by a figure adopted without evidence, or by a sale exchanged before anyone considered the tax consequences. The following steps cost very little at the time and prevent most of the trouble.

This guide explains how the rules generally work. It is not tax or legal advice, and it cannot account for the circumstances of a particular estate — trusts, business or agricultural property, foreign assets, deeds of variation, disputed entitlement and non-resident beneficiaries all change the analysis materially.

Where the difference between the probate value and the sale price is small and easily explained, the position is usually straightforward and well within the competence of a careful executor. Where the gap is material, where an Inheritance Tax claim and a Capital Gains Tax saving point in different directions, or where HMRC has already queried a figure, instruct a solicitor or chartered tax adviser before taking any step that is hard to reverse. The cost of an hour of advice is small against the tax at stake, and the decisions in this area — whether to appropriate, whether to claim, whether to correct — are far cheaper to get right the first time.

A well-evidenced date-of-death valuation is the foundation for all of it. It supports the Inheritance Tax figure, it fixes the Capital Gains Tax base cost, and it is the document that answers the question HMRC eventually asks: how did you arrive at this number?