A method, system, and article of manufacture for defining and managing instances of time-based organization hierarchies, and for monitoring achievement and attainment, and calculating compensation for individuals and/or groups within instances of the time-based organization hierarchies are disclosed herein. In one embodiment, a user may define and/or manage one or more instances of the time-based organization hierarchy via a user interface generated on a client. Moreover, and in response to a sales data input corresponding to a transaction, an achievement and attainment monitoring process may then be executed to accumulate transaction data in one or more achievement containers, and to compile achievement containers from a specified attainment period to calculate a user's attainment. In addition, an embodiment also provides for implementation of a compensation calculation process that may utilize the transaction data accumulated in the achievement containers to calculate an individual's compensation for a specified compensation period.