Business interruption insurance term used when ‘gross profit’ is defined as the amount by which the sum of the amount of the turnover and the amounts of the closing stock and work-in-progress shall exceed the sum of the amounts of the opening stock and the amount of the specified working expenses. In short, it is sales minus the cost of goods sold.

A master policy purchased by a multinational company to fill the gaps in cover that may arise through differences arising in insurances purchased locally in different overseas countries. The master policy only operates for risks not covered under local policies. It ‘tops up’ the cover to the level desired by the organisation as a whole. See difference in limits. In property insurance it may take the form of an ‘all risks’ cover on a large risk to supplement underlying insurances arranged on a named peril basis.
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Insurance contract that expands or supplements underlying property Insurance written on a named peril basis so as to cover that property on an All Risk basis, subject to stated exclusion designed to prevent overlaps with the underlying coverage.

Operates in the same way as difference in conditions insurance by providing excess limits of indemnity over the limits of locally arranged insurances purchased overseas.