Accurate Declared Values are important under Industrial Special Risks Insurance because underinsurance can affect how a claim is settled.
Some ISR policies contain co-insurance provisions that can reduce a claim where the values declared to the insurer are inadequate.
What is underinsurance? #
Underinsurance occurs where the value used for insurance purposes is lower than the amount that should have been declared under the policy.
This can occur because of:
- Rising rebuilding costs.
- Inflation.
- New machinery or equipment.
- Increased stock.
- Business growth.
- Incorrect Business Interruption calculations.
- Outdated property valuations.
What is co-insurance? #
Co-insurance is a policy mechanism that can require the insured to bear part of a loss where the declared value is insufficient.
The precise calculation varies between policies.
Businesses should therefore not assume that a claim will simply be paid up to the amount declared.
Can underinsurance affect a partial loss? #
Potentially, yes.
Underinsurance provisions can be relevant even where the insured property is not completely destroyed.
The policy wording determines how the calculation applies.
How can businesses reduce the risk? #
Useful steps can include:
- Obtaining professional building valuations.
- Reviewing machinery replacement costs.
- Updating stock values.
- Recalculating Business Interruption values.
- Reviewing values after major acquisitions or renovations.
Declared Values should be reviewed regularly rather than simply carrying forward the previous year’s figures.

