Bonum Bank is a deposit bank owned by POP Bank Union group. The Bank acts as a central credit institution for POP Banks by offering fundraising and payment intermediation.

As a central credit institution, Bonum Bank is responsible for POP Bank payment and clearing services and treasury services. In addition, Bonum Bank is responsible for POP Banks' card business and provides unsecured consumer credit. As a central credit institution, Bonum Bank is an internal bank of the POP Bank Group that provides POP Banks with the services they need and thus reduces dependence on external service providers.