A business rules application parallel processing system is provided. The system comprises at least one computer system, stored data, and an application that, when executed on the at least one computer system, extracts data from the initially stored data for processing in accordance with at least one business rule. The system also stores the data in a sequential file format as a first data set and partitions the data in the first data set in accordance with the at least one business rule to create a second data set and prepare the data in the second data set for processing. The system also partitions the data in the second data set into partition units appropriate for scaled application processing across multiple processors in the at least one computer system to create a third data set. The system also processes the data in the third data set in a parallel execution across the multiple processors and recombines the data after processing in accordance with the at least one business rule in a fourth data set.