Computer-implemented methods, articles of manufacture and systems for identifying an on-line bank account that is a business account or utilized for business purposes. Keywords are determined and comparisons are performed with different types of financial account data and data from different resources. Comparison results are embodied within a data set that is generated and provided as an input to a rule generator such as a rule-based classifier. The rule-based classifier outputs a rule utilized to determine whether an account is a business account or utilized for business purposes, in contrast to a personal account utilize for non-business, personal or residential matters.