Small bank, big ambitions: How Belgium’s smallest bank is scaling with Mambu
For 70 years, BankB has focused on building a distinctive position as Belgium’s complementary option for customers who want to save or need credit. With ambitions to grow while preserving its specialist model, BankB chose Mambu to modernise its banking infrastructure, combining a cloud-native core and centralised payments, including Swift connectivity.
- ~0.76
- billion in total assets managed as of 2026
- 0
- months for term mortgage loans to go-live on Mambu
- 0%
- planned increase in annual new mortgage lending by 2030
BankB
About the customer
BankB is an independent Belgian bank, specialising in savings and lending for private and professional customers, with lending activity in Belgium and France and savings distributed across selected European markets. Founded in 1956 as Centrale Kredietverlening (CKV Bank), it has built its proposition around finding tailored solutions for customers whose financing needs may not always fit the standard model of larger financial institutions.
As Belgium’s smallest bank, BankB deliberately positions itself as a complementary banking partner rather than a traditional primary bank, managing total assets of approximately €1.76 billion.
Its model is strongly intermediary-led, with a network of more than 500 savings agents and credit brokers supporting customers across its savings and lending business. BankB also extends its savings reach beyond Belgium through Raisin, giving savers in markets including Germany, the Netherlands and Spain access to selected BankB savings products.
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