The present invention is embodied in an online-like transaction processing method and system for processing account information contained in batch process files, the method including: reading at least one batch file containing a plurality of records, each of the plurality of records being related to an associated one of a plurality of accounts; identifying which of the plurality of records relate to same ones of the plurality of accounts; identifying one of the accounts; and, processing all of the records identified as relating to the one of the accounts together and independent of processing any of the records relating to any other of the plurality of accounts.