Several time-based methods are available for calculating absolute rebates. This page explains how to calculate those rebates yearly over a specified period.
With yearly rebates:
The cumulative total is calculated for the transactions from the start of the year up to the start of the calculation period, where:
The start of the year is the validation period start date, adjusted to be in the correct year, so it's just before the start of the calculation period.
The calculation period doesn’t have to start on the same date as the validation period but it can’t be greater than 12 months.
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.
You get the same total whether you calculate the individual months separately or the whole year in one calculation.
In the rule setup, click the Amounts Per dropdown list and select Year.
For example, suppose the rule setup uses the Percentage of Value calculation method, the Value bracket basis, and three brackets exist. The rule year starts in January, but the calculation year starts in August.
