To provide a business management system and computer program which manages information necessary for a procedure in an integrated manner and prevents inadequacy of the procedure even if the information is altered.

It is determined whether information necessary for an additional application of import registration is altered is determined (S1). When it is altered, an import registration additional application project is automatically set (S2), and a document necessary for the additional application is determined with reference to an international regulation information master (S3). When the import registration updating term is within n months (S4: YES), an import registration updating application project is automatically set (S5), and a document necessary for updating application is determined in reference to the international regulation information master (S6). The necessity of other various certificates is determined, and when they are necessary, acquisition of the certificates is instructed to a person in charge of national regulations.