The Difference Between Market Value, Insurance Value, and Probate Value and Why It Matters 

When it comes to valuing art, antiques, jewellery, and wider collections, the term “value” is often assumed to be straightforward. In reality, different contexts require different types of valuation, and confusing them can lead to serious financial, legal, or tax consequences. 

At Hamilton Square Auctioneers, we regularly advise private collectors, executors, solicitors, and institutions on three of the most commonly misunderstood valuation bases: Market Value, Insurance Value, and Probate Value. 

Understanding the distinction between these is essential to ensuring accuracy, compliance, and informed decision-making. 

Market Value 

Market Value is the price that an item is expected to achieve if sold in the open market at the valuation date. 

In practice, this is usually defined as: 

The amount for which an asset should exchange between a willing buyer and a willing seller, acting knowledgeably, prudently, and without compulsion. 

For artworks and objects offered at auction, Market Value is often closely aligned with auction estimates, informed by recent comparable sales, current demand, condition, provenance, and prevailing market trends. 

When is Market Value used? 

Presale advise and sale valuations

• Private treaty and negotiated sales  
• Asset management and collection planning 
• Capital Gains Tax (CGT) calculations on disposal  

Why it matters 

Market Value reflects realistic sale expectations. Overestimating can deter buyers and result in unsold lots, while underestimating may expose sellers to unnecessary financial loss. Accurate Market Value advice supports informed strategy and optimal sale outcomes. 

Insurance Value 

Insurance Value represents the cost of replacing an item with another of similar age, quality, and condition, often at short notice. 

Unlike Market Value, Insurance Value typically: 

• Includes dealer margins, sourcing fees, shipping, and taxes 
• Reflects retail replacement rather than auction prices 
• Assumes immediate availability 

As a result, Insurance Value is usually higher than Market Value. 

When is Insurance Value used? 

• Insurance policies for private collectors 
• Institutional and corporate collections 
• Risk management and asset protection  

Why it matters 

Under-insurance can result in inadequate compensation in the event of loss, theft, or damage. Over-insurance may lead to unnecessarily high premiums. Regularly updated and professionally prepared insurance valuations ensure collections are properly protected. 

Probate Value 

Probate Value is the value of an asset at the date of death, prepared for the purposes of administering an estate. 

In the UK, probate valuations must be: 

• Defensible 
• Evidence-based 
• Prepared in accordance with HMRC requirements 

Probate value is generally aligned with Market Value at the date of death, but with particular care taken to reflect achievable prices rather than optimistic assumptions. 

When is Probate Value used? 

• Inheritance Tax (IHT) reporting
• Estate administration
• Division of assets among beneficiaries 
• Future CGT calculations  

Why it matters 

An inaccurate probate valuation can expose executors and beneficiaries to: 

• HMRC enquiries and penalties 
• Overpayment or underpayment of Inheritance Tax 
• Complications in future disposals 

Professional Probate Values provide reassurance, transparency, and compliance at what is often a sensitive time. 

Why These Differences Really Matter 

Using the wrong valuation basis, or relying on informal or outdated appraisals, can have serious consequences: 

• Using an insurance value for probate may result in overpaying tax 
• Using a probate value for insurance may leave a collection under-insured 
• Relying on outdated market values can distort sale expectations and outcomes 

Each valuation serves a specific purpose. Accuracy depends on understanding both the asset and the context in which it is being valued. 

For all of your professional valuation needs please contact our senior valuer Chris Jarrey BA Hons Fine Art Valuation  chris.jarrey@hsauk.com 07802921506 or our offices on 01513177699