A German company’s Hausbank, its house bank, is the bank through which it handles more business than through any other. The start-up portal of the federal economics ministry and the KfW describes the relationship: Mit ihm besteht eine dauerhafte und vertrauensvolle Beziehung. It is a lasting relationship of trust. The house bank also has a formal role. Companies and founders usually apply for public development loans through it. This is called the Hausbankprinzip, the house bank principle. The house bank usually keeps the customer relationship and the risk.