This paper was to model the effects of e-commerce adoption on business process management. This was a census study on modeling the effects of ecommerce adoption on business process management in commercial banks in Kenya. Out of the sixty (60) respondents to whom the questionnaires were administered, only forty one (41) responded. This gave a response rate of 68.33% percent. It was found that the commercial banks in Kenya have Formalized Policy on E-Commerce and Internal Business Process Management. Also to a great extent the banks have focused their e-business activities on collaborating with business partners using ICT; provision of other on-line and e-services, including e-marketing and advertising; supply chain management using intranet; and on-line buying (internet).