Stock is the one sum insured that is wrong almost as soon as it is written, because it changes with every delivery and every sale. Insurers deal with that in specific ways, and knowing them is the difference between a full settlement and a proportional one.
What stock is insured for
Stock is usually insured at cost price to the business rather than at retail value, because the policy indemnifies the loss rather than the lost profit. Work in progress is valued at cost plus the work done to date. The distinction matters at claim time for a retailer who assumed the shelf price was the basis, and it is also why business interruption exists separately, since the profit that the stock would have earned is a different loss.
Seasonal peaks and how they are handled
Businesses whose stock swells before a trading peak have two honest options: insure the peak all year, or use a seasonal increase clause that raises the sum insured automatically during stated months. Insuring the average and hoping is the third option and the one that triggers the condition of average, which reduces a claim in the same proportion as the underinsurance, including on small losses in the quiet months.
Deterioration, and stock that needs a temperature
Chilled and frozen stock can be lost without any damage to the premises at all: a freezer fails, a compressor goes, the power is cut. That is a deterioration of stock claim and it needs its own extension, usually with conditions about maintenance contracts and temperature monitoring. For some businesses this is the most likely loss of the year and the one the general contents section never mentions.
Stock somewhere else
Stock cover is tied to the premises on the schedule. Goods at an exhibition, in a third party warehouse, at a market stall, with a customer on approval, or in transit are outside it unless extended. Businesses that sell at events or use fulfilment providers are the ones most often uninsured on this point, and a fulfilment provider's own cover usually limits their liability to something far below the value of your goods.
Questions people ask about business stock insurance
Is stock insured at cost or retail price?
Normally at cost to the business, because the policy indemnifies the loss. The lost profit is a business interruption question.
How do I insure a seasonal stock peak?
Either insure the peak all year or use a seasonal increase clause for the stated months. Insuring the average triggers the condition of average.
Is stock covered in a third party warehouse?
Only if extended. Stock cover follows the premises on the schedule, and a fulfilment provider's own liability is usually far below the value of the goods.