Insights · Deductible and value

Depreciation in depth: how insurers calculate it, and what you can do

The case of the 3-year-old headlight is the perpetual dispute of the casco world: the replacement part is new, but the insurer may deduct the age-related difference in value. This is depreciation – not a trick, but the principle that a claim shouldn't leave you better off than before. The question isn't whether it exists, but how and to what your own policy applies it.

In brief:
  • The principle of depreciation: a settled claim is not a windfall – the insurer may deduct the added value of a brand-new part.
  • The practice depends on the policy: which parts, from what age, at what rate – this is one of the most important lines in any comparison.
  • Many policies include a depreciation-free or discounted category – for example up to a certain age or for specific parts; clarify this when you take out the policy.

Why does depreciation exist?

Property insurance compensates the loss – not more. If a worn bumper on an eight-year-old car is replaced with a brand-new one, the car has become more valuable at that point than it was before the claim: the deduction reflects that surplus. The principle is fair – the practical question lies in the proportions: which parts it applies to, from what age, and at what rate, and what the policy says about paintwork, tyres, the battery, and wear-and-tear components.

How does the insurer typically calculate it?

The claim calculation is built from repair line items: parts, paintwork, labour. Depreciation typically affects the parts items – with rates depending on age and category, set out in the policy or in claims-handling practice. Labour is typically not affected by depreciation. For a total loss, the depreciation question appears differently: there, the market value at the time of loss of the whole car is the reference point. We deliberately don't quote figures here: the rates vary by policy – which is exactly why it's a point of comparison.

What can the owner do?

When taking out the policy: ask about the depreciation-free category – many policies offer a more favourable rule up to a certain age or for specific parts; this is one of the most valuable lines in the comparison table. During the year: track your car's real value and keep it well maintained – a well-documented, serviced car is also in a stronger position at claim time. At claim time: ask for an itemised calculation and check which lines carry a deduction. And where depreciation is disputed, help from the broker comes in: depreciation disputes and value disputes.

Want to know how your own policy applies depreciation? Let's look at the small print together. book a free 20-minute consultation →

This article is for information purposes only, contains general information and does not constitute an offer or insurance advice. The exact content of insurance contracts is defined by the insurers' terms and conditions in force.

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