Abstract: The main purpose of this study was to assess the effect of advancing technology on financial performance of Commercial Banks in East African community partner States, specifically; The study was guided by the following specific objectives:the role of Mobile advancing; the importance of Internet advancing; the impact of Electronic Card advancingboth on financial performance of Commercial Banks in East African community partner States.Different methods and methodologies were used during this study. The Stratum sample size strategy has been used to determine which number of banks per States memberof East African Countries should be obtains Data; with Stratum sample size mathematic formula, equally EAC States members provided their financial Institutions (Banks) accordingly such as 3 out of 12 Commercial Banks in Rwanda; 10out of 48 Commercial Banks in Kenya