Systems and methods are provided for calculating a distribution of a quantity over receiver objects. In one implementation, a data processing system is provided that comprises application programs adapted to generate a distribution request, storage means for storing rules adapted for distribution of the quantity and storing an assignment of a sub-set of the rules to each application program, each rule having an assigned priority of execution and each sub-set of rules having an assigned identifier. The system may also comprise means for receiving the request comprising the identifier of the sub-set of rules assigned to the one of the application programs, the quantity to be distributed, and the identifiers of receiver objects, the distribution calculation means adapted to access the storage means for execution of the sub-set of rules assigned to the one of the application programs.