LAW

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Malaysian Banking Law – Agent and Principal Relationship Between Banker and Customer
Case Scenario
Sarah Lim is the owner of a trading company in Malaysia. She maintains a current account with Malayan Banking Berhad. Sarah instructed the bank to make a monthly standing payment of RM15,000 to one of her suppliers and also authorised her finance manager to issue cheques on behalf of the company.
Subsequently, the finance manager issued several cheques exceeding the authorised amount and one payment was mistakenly transferred by the bank to the wrong account due to an administrative error. Sarah alleged that the bank had breached its duties and claimed compensation for the losses suffered. The bank argued that it merely acted according to the mandate and authority given by the customer.
The legal issue is whether the relationship between the bank and Sarah, in relation to these transactions, was one of agent and principal, and whether the bank properly discharged its obligations as an agent.


Nature of the Agent and Principal Relationship
Apart from the debtor-creditor relationship, another important legal relationship between a banker and customer is that of agent and principal. This relationship arises when the customer authorises the bank to perform specific acts or transactions on the customer’s behalf. In such circumstances, the bank acts as the customer’s agent while the customer remains the principal.
The agency relationship commonly exists where the customer gives the bank a mandate to:
  • carry out standing instructions or payment orders;
  • make remittances or transfers of funds;
  • collect cheques, bills, and negotiable instruments;
  • conduct trade-related banking transactions; or
  • permit another authorised person to operate the account.
Thus, the bank does not merely hold money belonging to the customer, but actively performs functions on behalf of the customer in accordance with the authority granted.
In banking practice, agency functions are essential because modern commercial transactions depend heavily on banks to execute payments, collect instruments, and process financial instructions efficiently.


Judicial Authority
The principle that a banker may act as an agent for the customer was recognised in the English case of Westminster Bank Ltd v Hilton.
Westminster Bank Ltd v Hilton (1926)
Facts
In this case, issues arose concerning the drawing and payment of cheques and the nature of the legal relationship between the bank and its customer during such transactions.
Held
Lord Atkinson observed that, regarding the drawing and payment of cheques, the relationship between banker and customer is one of principal and agent. The bank acts according to the instructions and authority given by the customer and must carry out those instructions properly and within the scope of the mandate.
The case established that when processing cheques and payment instructions, the bank performs an agency function rather than acting merely as a debtor.


Application to the Case Scenario
In Sarah’s case, the bank acted as an agent when executing the standing instructions and processing cheque payments on behalf of the company.
The standing monthly transfer to the supplier clearly constituted a mandate given by Sarah to the bank. Therefore, the bank owed a duty to execute the instructions accurately and with reasonable care.
Similarly, when the finance manager was authorised to issue cheques, the bank was entitled to rely on the authority granted by the customer unless there were obvious irregularities or circumstances raising suspicion.
However, the mistaken transfer to the wrong account may amount to a breach of the bank’s duty as an agent because the bank failed to comply precisely with the customer’s instructions. An agent must act strictly within the authority conferred by the principal. Any deviation from the mandate may render the bank liable for losses caused by the error.
The unauthorised excessive cheque payments depend on whether:
  • the finance manager acted within the authority granted;
  • the bank knew or ought reasonably to have known of the limitation; and
  • the bank exercised proper diligence in processing the cheques.
If the bank processed cheques that clearly exceeded the authorised mandate despite being aware of the limits, the bank may be liable for negligence or breach of mandate.


Critical Analysis
The agent-principal relationship demonstrates that banking obligations extend beyond merely receiving deposits and repaying money. Banks frequently perform specialised transactional services requiring precision, diligence, and strict compliance with customer instructions.
One important implication of the agency relationship is that the bank must follow the customer’s mandate exactly. Unlike the debtor-creditor relationship, where the bank primarily owes repayment obligations, agency duties involve fiduciary-like responsibilities of care, obedience, and accountability.
Nevertheless, modern banking operations involve automated systems and high transaction volumes, making absolute perfection difficult. Courts therefore generally assess whether the bank acted reasonably and in accordance with standard banking practice.
Another critical issue concerns third-party authority. Banks often rely on mandates allowing employees, agents, or signatories to operate accounts. While this facilitates commercial efficiency, it also creates risks of fraud and abuse. Banks must balance operational efficiency with adequate verification and compliance procedures.
The principle in Westminster Bank Ltd v Hilton remains highly relevant today, especially in electronic banking, online fund transfers, and automated payment systems. Modern banking technology has expanded the scope of agency functions, thereby increasing the importance of banks exercising reasonable skill and care when executing customer instructions.
Furthermore, Malaysian banking law recognises that banks may incur liability where they:
  • act outside the customer’s mandate;
  • ignore suspicious circumstances;
  • fail to verify instructions properly; or
  • negligently execute payment instructions.
Thus, the banker-customer agency relationship plays a crucial role in ensuring trust and accountability within the banking system.


Conclusion
The relationship between banker and customer may become one of agent and principal whenever the bank performs transactions on behalf of the customer pursuant to the customer’s instructions or mandate.
In the present scenario, the bank acted as Sarah’s agent in processing standing instructions and cheque payments. The mistaken transfer to the wrong account likely constitutes a breach of the bank’s duty as agent because the bank failed to follow the customer’s instructions accurately.
The bank’s liability concerning the excessive cheque payments depends on whether it acted within the authority granted and whether it exercised reasonable care in processing the transactions.
Therefore, Sarah may successfully claim damages against the bank for losses arising from transactions executed outside the proper mandate or due to negligent performance of the bank’s agency duties.

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