The Billing period adjustment option allows you to define situations in which a bill is prorated. Proration is adjusting a cost based upon an expected time period. For example, a utility defines a normal billing period as 30 days, and you have a bill for 60 days. All applicable costs are prorated using the following formula:
Cost*(Billing Days/Average billing period days)
Cost*(60/30) = Cost*2
In the Rate Wizard - Feature Selection page, select the Billing period adjustment option.
In the Rate Wizard - Billing Adjustments page, specify the appropriate prorating conditions.
Enter the average billing period month, as defined by the vendor.
Enter the adjustment rules - minimum/maximum billing period lengths. If all bills are prorated, set the minimum and maximum to equal the billing period length.