What Is a Probate Valuation? A Complete Guide for Executors

A probate valuation is a professional assessment of an asset's Open Market Value at the date of death. It is required by HMRC as part of the Inheritance Tax process and forms a key part of the estate administration that executors must complete before a Grant of Probate can be issued.

The purpose is straightforward: HMRC needs to know what the deceased's assets were worth in order to calculate any Inheritance Tax that is due. For property, personal possessions, investments, and other assets, the executor must provide values that reflect what each asset would realistically fetch if sold on the open market on the date the person died — not what the family thinks it is worth, not what was paid for it, and not what it might sell for in ideal circumstances.

Probate valuations cover all types of assets within the estate. The most commonly valued items include residential property, jewellery, watches, art and paintings, antiques, classic cars, gold and precious metals, and valuable collections. Each category requires specialist knowledge, and different professional qualifications apply to different asset types.

Every estate that requires a Grant of Probate (or Confirmation in Scotland) must include accurate values for all the deceased's assets. However, the level of professional input required depends on the nature and value of the assets:

HMRC sets a threshold of £1,500 for personal chattels. Any single item — a piece of jewellery, a painting, a watch, a classic car — that the executor believes may be worth £1,500 or more must be professionally valued by a qualified, independent valuer. Below this threshold, executors can provide their own reasonable estimates, although professional advice is still prudent where there is any uncertainty.

For property, there is no formal threshold — but the HMRC Valuation Office Agency (VOA) actively reviews property values declared on Inheritance Tax returns and will challenge figures they consider inaccurate. A RICS-qualified surveyor's valuation provides the strongest defence against a VOA challenge.

Probate valuations are needed regardless of whether the estate ultimately exceeds the Inheritance Tax nil-rate band (currently £325,000, or £500,000 where the residence nil-rate band applies). HMRC requires accurate reporting of all assets even in non-taxable estates.

Open Market Value (OMV) is the cornerstone concept in probate valuation. It is defined as the price that an asset would fetch if sold on the open market at the date of death, between a willing buyer and a willing seller, with both parties having reasonable knowledge of the relevant facts.

This is critically different from other types of valuation that executors may encounter:

The following categories of assets most commonly require professional probate valuation. In each case, the valuer must hold appropriate qualifications and produce a report that meets HMRC standards.

While the specific process varies by asset type, probate valuations generally follow a consistent pattern. Understanding this process helps executors plan their time and set expectations.

The first step is identifying which assets require valuation and engaging appropriate professionals. For estates with multiple asset types — jewellery, paintings, and a property, for example — different specialists may be needed. Some valuers cover multiple categories, particularly for home visits where jewellery, art, antiques, and other chattels can be assessed in a single appointment.

The valuer then inspects each asset, either in person or (for some item types) from detailed photographs. Physical inspection is strongly preferred and is the standard HMRC expects for higher-value items. During the inspection, the valuer examines, measures, photographs, and documents each asset, noting condition, distinguishing features, hallmarks, signatures, and any factors that affect value.

Research into comparable sales is the next critical step. The valuer investigates recent auction results, dealer transactions, and market data to establish what similar items have actually sold for. This evidence-based approach produces a defensible figure rather than an opinion.

Finally, the valuer produces a formal report detailing each asset with its description, photographs, and assessed Open Market Value at the date of death. This report is submitted to HMRC as part of the Inheritance Tax return (IHT400 or the simpler IHT205/C5 for excepted estates).

Probate valuation fees vary by asset type and complexity. As a guide:

All probate valuation fees are a legitimate estate administration expense and can be deducted from the estate before calculating Inheritance Tax. The estate bears the cost, not the executor personally. Given that an accurate valuation can save the estate substantially more in Inheritance Tax than the fee charged, professional valuation is almost always a sound investment.

Inaccurate probate valuations create risks for executors in both directions.

Undervaluing assets can trigger an HMRC enquiry. If HMRC determines that the estate was undervalued — whether through ignorance, carelessness, or deliberate omission — the executor may face additional tax, interest on the unpaid amount (currently charged at 7.5% per annum), and penalties ranging from 0% to 100% of the underpaid tax depending on the circumstances. In serious cases, undervaluation can be treated as fraud.

Overvaluing assets means the estate pays more Inheritance Tax than is legally due. While executors can apply to HMRC for a refund within certain time limits, the process is not straightforward, and overpayments on personal chattels (as opposed to property or shares) are particularly difficult to reclaim after the estate has been distributed.

Executors have a personal legal obligation to ensure the estate is valued correctly. This means that if a shortfall arises due to inadequate valuations, the executor could be held personally liable — even after the estate has been fully distributed to beneficiaries. Professional valuations provide the executor with a defensible position and transfer the liability risk to the professional valuer's indemnity insurance.

Not all valuers are equal, and HMRC expects valuations to be carried out by appropriately qualified professionals. When selecting a probate valuer, check for the following:

The right qualifications matter because HMRC can reject valuations from unqualified individuals, leaving the executor in the position of having paid for an unusable report and needing to commission a second valuation from a qualified professional.