Reviewed January 20, 2010

The Business Income Worksheet and the Combination Gross Earnings Business Interruption Worksheet

Summary: Along with the 1986 simplified business income coverage form, the Insurance Services Office introduced a revised business income worksheet. It was updated again in 1988 and issued as form number CP 15 15 07 88 and again in 1995 as CP 15 15 06 95. It appears at first glance to be quite different from the old combination gross earnings business interruption worksheet, CF 15 15, but as the following discussion will show, the two worksheets request the same information and process it into the same final result, which is used for calculating the business income insurance coinsurance limit. Because little change took place in the 1995 revision of the worksheet see The Business Income Work Sheet—Step By Step the comparison between the 1988 worksheet and the gross earnings worksheet is still valid. In order to demonstrate the equality of the two worksheets, numbers were taken from an example of a manufacturing risk found in Business Interruption Insurance—Its Theory and Practice by Robert M. Morrison JD, CPCU (The National Underwriter Company 1986) and plugged into each worksheet. An explanation of how they match up follows.