This study explores how customers’ affective commitment and calculative commitment to the personal adviser and bank, respectively, affect their intentional loyalty to the personal adviser and bank. Data were collected using a web survey of mass affluent customers of a major Swedish bank. Responses were measured and analysed using factor, correlation, and regression analyses. The results reveal that the person-to-person and person-to-firm loyalty categories are influenced by affective and calculative commitment to the personal advisor and by affective commitment to the bank, but not by calculative commitment to the bank. Moreover, there is a strong relationship between customer loyalty to the personal adviser and to the bank. It can be concluded that affective commitment has a stronger overall impact on customer loyalty than does calculative commitment, indicating the importance of creating affective ties with customers, and that personal advisers are central to bank – customer relationships. The importance of financial issues to mass affluent customers implies that both affective commitment and calculative commitment to the personal adviser are important in building customer loyalty to a bank or brand.