This is the amount of premium on which the full commission is paid.  This field is especially important if you are using the optional commission module because a percentage of commission is applied to it for calculating commissions.

When the premium mode is other than annual, the full modal premium will often be applied 100% to the base premium until the full base premium is paid.  Only then will the premiums be applied to the excess premium.

Example

Assume the annual premium is $1,200 and the monthly premium is $100.  Also assume the annual base premium is $600 and the annual excess premium is $600.  The monthly premiums of $100 will often be applied to the base premium of $600 and only after $600 is paid will the premiums be credited to the excess premium account.