A BOP is rated more simply than a commercial package policy. A commercial package policy is built from monoline coverage forms, each rated under its own monoline rules, with a package discount if eligible. A BOP uses its own special businessowners rules and rates.

Property: the premium is based on the building and business personal property limits. One carrier's manual applies a rate per $1,000 of each amount of insurance. Example with sample rates: a $500,000 building limit at $1.20 per $1,000 is $600; a $200,000 personal property limit at $2.50 per $1,000 is $500; the property premium is $1,100.

Built-in charges: BOP rates include charges, called loading, for business income and other included coverages. These are not calculated separately, which is part of what keeps BOP rating simple.

Liability: in the standard approach, liability rates are based on the class of business and applied to the property insurance limits, either building or business personal property. There is no separate liability exposure calculation. Some insurers' own programs may use other bases.