Abstract: A method for flexible automated comparison of a biller's data with the business customer's data via the EBPP system that is in place between the two. The biller stores a first set of customer billing data in its EBPP database. The customer stores a second set of customer billing data reflecting its most current information. The biller presents an electronic statement to the customer based on the first set of customer billing data. The customer selects one or more of the invoices for comparison and billing data fields to perform comparison on. The customer transmits an input file to the biller reflecting local data. The biller EBPP system then compares the customer's local billing data with the EBPP data. The step of comparing further includes selecting a comparison set of data from the EBPP data based on the one or more invoices selected by the customer. The comparison is performed on the fields indicated for comparison by the customer.