Multiple Banking is the arrangement where the borrower has separate credit facilities from multiple banks without a formal consortium structure. It increases information asymmetry and monitoring complexity. Lenders should assess total exposure, security sharing, and repayment conduct across banks. In underwriting, it provides business and banking context that supports facility structuring, risk assessment and credit-decision documentation. It helps convert raw borrower information into a clear credit narrative, especially when the relationship involves multiple facilities, lenders or business activities. For example, a borrower may maintain cash-credit limits with two banks, so the underwriter must understand total exposure, stock statements and sharing arrangements. It matters because the same borrower can look different depending on banking arrangement, transaction behaviour, documentation quality and business context. The common caution is to document the source, date, assumptions and credit impact so the term does not become a vague narrative label.