Several time-based methods are available for calculating absolute rebates. This page explains how to calculate those rebates monthly over a specified period.
With monthly rebates:
The cumulative total is calculated for the transactions from the start of the calendar month up to the start of the calculation period.
Then, the transactions in the calculation period are added to that cumulative total and put into brackets accordingly. This ensures the calculation starts in the correct bracket.
If the calculation period spans multiple months, the cumulative total is reset to $0 at the start of each month.
In the rule setup, click the Amounts Per dropdown list and select Month.
For example, suppose the rule setup uses the Percentage of Value calculation method, the Value bracket basis, and three brackets exist. The calculation results depend on the calculation period.
Full months: If the calculation period is from June 1st to July 31st (two full months), the results are split into two month periods. As the calculation started at the start of the calendar month, there's no cumulative total to factor in, so the rebate for each month is calculated as usual, based on the brackets that are hit in that period.
Partial months: If the calculation period is from June 21st to July 31st (partial period), there is a cumulative total to factor in. Therefore, the partial period from June 22nd until the end of June is already in the 5% bracket.
