GlossaryEN1 min readUpdated: Jun 26, 2026
underinsurance
Underinsurance occurs when the sum insured falls below the actual value of the goods at the time of loss.
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Source: https://www.investopedia.com/terms/u/underinsurance.asp
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Underinsurance occurs when the sum insured falls below the actual value of the goods at the time of loss. Insurers worldwide apply the proportional rule as a consequence: the claim payout is reduced in the same ratio as the insured sum is to the true value, and this reduction applies equally to partial losses. Common causes include inaccurate value declarations, omitted ancillary costs such as freight charges and duties, and goods appreciation between policy inception and the loss event. For freight forwarders, advising shippers to keep declared values current and complete is a core professional responsibility. Underinsurance is distinct from overinsurance, where the insured sum exceeds the actual value – in that case, the true value simply caps the payout.
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