Minimum Charge calculation rules create bill lines that levy charges only when the sum of previously calculated lines is less than the minimum charge amount. Minimum charge calculation rules must define the respective target category that they are applied to. The calculation rule(s) that compute charges that the minimum is levied on must be defined as members of the target category. See Cross-Reference under Common Parameters for more information about Member and Target categories.

Note that if the values being compared are negative values, the comparison is NOT done on the absolute values, but rather on the actual values. For example, imagine you have a minimum discount of $ -2.00 and previous calculation rules have calculated a discount of $ -1.00. You want a calculation rule to create a bill line for $ -1.00 to apply a further discount. A minimum charge calculation rule will not work in this case because -1 is considered more than -2. For this business scenario you should use a maximum charge calculation rule.