1. A computer implemented method of generating a set of tax schedule information comprising: (a) providing by a server comprising a processor and a memory an Excel interface, the Excel interface stored in the memory and being associated with a set of commands and functions; (b) accessing by the server a database separate from the Excel interface and the set of commands and functions, the separate database operatively connected to the server and storing a set of data received from the server and associated with a first time stamp, the set of data having been defined using the set of commands and functions; (c) manipulating the set of data by executing the set of commands and functions to generate a first set of tax schedule information and associating the generated first set of tax schedule information with a second time stamp; (d) storing the first set of tax schedule information with the associated second time stamp in the separate database; and (e) receiving by the database at least one additional set of data associated with a third time stamp, manipulating the at least one additional set of data by executing the set of commands and functions to generate a second set of tax schedule information and associating the generated second set of tax schedule information with a fourth time stamp and storing the second set of tax schedule information with the associated fourth time stamp in the separate database, whereby the first and second sets of tax schedule information with respective time stamps are adapted for later recall.