bank asks for detailed explanation of the purpose of the business loan

Loan purpose is part of customer due diligence, not of the credit assessment

The bank asks this not to assess the loan, but because it must record this under the customer due diligence required by the Anti-Money Laundering and Countering the Financing of Terrorism Act (Wwft). This act obliges the bank to know who its client is and what the client intends to use the relationship or transaction for. A loan application without a clear purpose is a gap in the bank's file, regardless of whether you are creditworthy.

Concretely, this means the bank wants a description that corresponds to something verifiable: an investment in business assets, working capital expansion, acquisition of another company, or refinancing of existing debt. The more concrete, the fewer follow-up questions. Vague language such as "general business operations" often leads to a second round, because the bank cannot trace it back to a concrete cash flow. This subject also relates to the question of the source of the company's assets: a loan for an acquisition often also requires an explanation of the financing of your own stake.

Where this follows from: the client due diligence under the Wwft

The obligation to conduct customer due diligence is set out in the Wwft and requires institutions such as banks to record, among other things, the purpose and intended nature of the business relationship or transaction. This is a bank's own obligation, separate from the credit assessment itself — which is why the loan purpose can also be asked separately from the financial substantiation of the application. If the application is related to an acquisition or change in control, the bank often inquires further in the same round about who are the ultimate beneficial owners of the company, because a changed purpose sometimes also means a changed structure. For the exact wording of the due diligence requirement, the act itself is the primary source.