Executors often assume that a more detailed jewellery valuation must be a better one. So when a high-street jeweller produces a polished report with stone measurements, hallmark details, photographs and a fee of £50 to £100 per item, it can feel reassuringly thorough. The problem is that, for probate, much of that detail may not be needed.

Probate valuations and insurance valuations are different products built for different purposes, and executors often pay for one when they actually need the other. This article explains why the two diverge, what HMRC genuinely requires, and how to choose a valuation that is professional and stands up to scrutiny without paying for detail that does nothing for your tax figure.

Probate and Insurance Valuations Serve Different Purposes

The two reports differ because they answer different questions. A probate valuation establishes the open-market value of an item at the date of death, which is the figure HMRC uses to work out any inheritance tax due. The value to be included is the price the property might reasonably be expected to fetch if sold on the open market at that time. An insurance valuation does something else entirely: it identifies an item in detail and prices the cost of replacing it new if it is lost, stolen or damaged.

This difference has a real effect on your tax figure, because a replacement value is almost always higher than an open-market value. A valuation for insurance purposes using replacement values may put the figure too high. The extensive detail an insurance report demands costs money to produce, and HMRC does not require it. For probate they simply want a sound, professional figure on which tax can be assessed, not a full identification document.

Why Insurance Valuations Carry So Much Detail

A full insurance valuation of a single ring records almost everything the eye can see. It captures the stone’s identity and dimensions, its colour, clarity and saturation, any inscriptions or distinguishing marks, the hallmark inside the shank, notes on condition, and a description of the setting and shoulders, often backed up by photographs taken from several angles.

All this detail exists mainly so an item can be identified and recovered if it is ever lost or stolen, and not to reach a figure for tax.

For probate, that depth of identification simply isn’t required.

What HMRC Actually Requires for Probate

HMRC’s expectations for probate are more practical than many executors assume. For jewellery, form IHT407 asks for individual items worth £1,500 or more to be listed separately, with a description and their open-market value at the date of death. Jewellery below that level can be included within the total for other household and personal goods.

That is an important distinction, because HMRC is not asking for a full insurance-style identification document.

It does not need every stone measured, every hallmark transcribed, or a photographic record from several angles simply to calculate inheritance tax. It needs to know what the item is, that it has been valued on the correct basis, and what figure should be included in the estate.

Of course, that does not mean the valuation can be casual. If HMRC queries the figure, the executor needs to be able to show that a proper assessment was carried out and that the value is defensible. But IHT407 does not set out the same descriptive standards used for insurance valuations. It asks for the items to be identified and valued, not catalogued to the level required for replacement, recovery or policy documentation.

That is where probate and insurance reporting often become confused. A good probate valuation still needs professional judgement and enough information to support the figure. What it does not usually need is the full descriptive machinery of an insurance report, where much of the work is about documenting the item in forensic detail rather than establishing the taxable value.

The Cost of Paying for the Wrong Report

A full insurance-style valuation from a highstreet jeweller can cost somewhere between £50 and £100 per item, which reflects the time and care that goes into recording every detail. For a genuine insurance policy that is money well spent, because the report does a real job in identifying and protecting the piece. The trouble for an executor is that it is the wrong product for probate, not just an expensive one.

When you pay for that level of detail on straightforward probate jewellery, you are spending more to produce a document HMRC never asked for. So it is good money after bad.

This is not to say jewellers overcharge. Their fees are fair for what an insurance valuation involves. The mismatch is one of purpose, and for most probate items a proportionate report will do the job for less.

When Detailed Reporting Is Still Worth It

None of this means a full report is always a waste. For very high-value, unusual, branded or antique pieces, the extra detail earns its keep, because the figure carries more weight and is far more likely to be questioned. A thorough record protects the executor by showing exactly what was assessed and how the value was reached, which is invaluable if HMRC raises a query or the items are later sold at auction.

Detail also counts where jewellery might be disputed between beneficiaries. By keeping a full written and photographic record, you let another professional review the valuation later without ever handling the piece, and confirm whether the figure was sound or wide of the mark. An independent check like this can settle disagreements and show that proper due diligence was carried out. So for the most significant or contentious items, comprehensive reporting is a sensible safeguard, not an unnecessary expense.

Choosing a Proportionate Probate Valuation

The takeaway is simple: a good probate valuation should be professional, defensible and compliant with HMRC, but it doesn’t have to be a full insurance identification document.

The right report is the one that fits the items and the estate in front of you, giving enough evidence to support each figure without paying for detail the tax exercise never needed.

Before you instruct anyone, check the valuer is working to open-market value at the date of death, as required under section 160 of the Inheritance Tax Act 1984, and not on a replacement basis. Then pick a level of reporting proportionate to what you’re valuing, keeping the fuller detail for the high-value (£10k+ typically) or disputed pieces that genuinely warrant it.

Swift Values is the first jewellery valuation service built entirely around probate, which makes it cost-effective and comes with a 100% acceptance rate and a money-back guarantee. If you’ve any questions, get in touch at hello@swiftvalues.co.uk.