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Malaysian Banking Law-Definition of “Customer”
General Principles
Banking law fundamentally governs the legal relationship between a bank and its customer. Therefore, understanding the meaning of “customer” is essential in determining the rights, obligations, and liabilities arising between parties in banking transactions. Although the Financial Services Act 2013 does not expressly define the term “customer,” it defines a “depositor” as a person entitled to repayment of a deposit, whether the deposit was made personally or by another person. This definition is narrower because every depositor is generally a customer, but not all customers are necessarily depositors.
The term “customer” itself has not been statutorily defined under Malaysian banking legislation. Similarly, under UK legislation, neither the Bills of Exchange Act 1882 nor the Cheques Act 1957 provides a definition of “customer.” In Malaysia, the Bills of Exchange Act 1949 also does not define the term. As a result, the legal meaning of “customer” has largely been developed through judicial interpretation and common law principles.
By contrast, the United States adopts a more direct statutory approach. Article 4–104(1)(e) of the Uniform Commercial Code defines a customer as “any person having an account with a bank or for whom a bank has agreed to collect items and includes a bank carrying an account with another bank.” This definition recognises both traditional account holders and persons engaging banks for collection services.
English courts have established several principles to determine whether a banker-customer relationship exists and when such a relationship begins. Malaysian courts have similarly relied on common law principles. In Abdul Rahim Abdul Hamid & Ors v Perdana Merchant Bankers Bhd & Ors, the Court of Appeal examined whether a banker-customer relationship could arise during negotiations between parties. The court concluded that preliminary negotiations alone do not automatically establish such a relationship unless banking services have been formally accepted or provided.


Malaysian Statutes
Under Malaysian law, there is no comprehensive statutory definition of “customer.” The relevant statutes merely regulate banking operations and negotiable instruments without clarifying who qualifies as a customer.
The Financial Services Act 2013 defines a “depositor” but remains silent on the broader meaning of “customer.” Likewise, the Bills of Exchange Act 1949 contains provisions governing bills, cheques, and negotiable instruments but does not define the banker-customer relationship.
This legislative silence means that Malaysian courts continue to rely heavily on English common law authorities and judicial precedents when determining whether a customer relationship exists.


UK Statutes
Similarly, UK banking legislation does not provide a statutory definition of “customer.” The Bills of Exchange Act 1882 regulates negotiable instruments such as cheques and promissory notes but does not define the term “customer.” The same position applies under the Cheques Act 1957.
As a consequence, English courts developed common law principles to identify when a person becomes a customer and when the banker-customer relationship commences. These principles later influenced Malaysian banking law due to the shared common law heritage between the two jurisdictions.


Critical Analysis
The absence of a statutory definition of “customer” creates flexibility but also generates uncertainty. Courts are able to adapt legal principles to changing banking practices, including internet banking, fintech platforms, and digital financial services. However, uncertainty may arise in determining precisely when legal duties owed by banks commence.
The decision in Abdul Rahim Abdul Hamid & Ors v Perdana Merchant Bankers Bhd & Ors highlights this issue. Individuals negotiating with banks may assume that legal protections already exist even though no formal banker-customer relationship has been established. Courts generally require clearer evidence such as account opening, acceptance of deposits, or provision of banking facilities before recognising such a relationship.
Another issue concerns modern digital banking services. Traditional common law definitions were developed during an era dominated by physical bank branches and paper transactions. Today, many users access financial services through mobile applications, digital wallets, or online platforms without maintaining conventional bank accounts. The law remains unclear as to whether such users automatically qualify as customers for all legal purposes.


Practical Application
The legal recognition of a person as a customer carries important consequences. Once a banker-customer relationship exists, banks owe several duties, including:
  1. the duty to honour valid payment instructions;
  2. the duty of confidentiality;
  3. the duty to exercise reasonable care and skill; and
  4. compliance with financial regulations and anti-money laundering obligations.
For example, a person who opens a savings account and deposits funds clearly becomes a customer, thereby acquiring legal protections under banking law. Conversely, a person who merely enquires about loan facilities or financing packages may not yet enjoy the same protections because no formal relationship has arisen.
Banks therefore commonly require formal account opening procedures and written documentation to establish certainty regarding the commencement of the banker-customer relationship.


Case Scenario
A company director approaches a bank seeking financing for a construction project. Several discussions and negotiations occur between the parties, and bank officers express confidence that the financing application will likely be approved. Relying on these statements, the director signs contracts with suppliers and contractors.
Subsequently, the bank rejects the financing application due to internal credit concerns. The director claims that a banker-customer relationship already existed during negotiations and alleges that the bank owed him a duty of care.
Applying the reasoning in Abdul Rahim Abdul Hamid & Ors v Perdana Merchant Bankers Bhd & Ors, the court would likely conclude that preliminary negotiations alone are insufficient to establish a banker-customer relationship. Since no account was opened and no banking services were formally provided, the bank’s obligations would remain limited.


Solutions and Recommendations
Several measures may improve legal certainty regarding the definition of “customer”:
  • Malaysian banking legislation could introduce a statutory definition similar to the approach under the Uniform Commercial Code in the United States.
  • Banks should clearly inform prospective clients that negotiations do not automatically create legal banking relationships.
  • Regulatory authorities should issue guidelines addressing digital banking users and fintech customers.
  • Financial institutions should adopt transparent onboarding procedures clarifying when legal obligations commence.
These reforms would strengthen consumer protection while promoting certainty in modern banking transactions.


Unresolved Issues
Despite judicial developments, several important questions remain unresolved:
  • Whether users of digital banking applications qualify as customers under banking law;
  • Whether banks owe pre-contractual duties during financing negotiations;
  • The extent of confidentiality obligations during preliminary dealings; and
  • Whether fintech companies providing banking-like services should be subjected to the same legal duties as traditional banks.
These issues demonstrate the continuing evolution of banking law in response to technological and commercial developments.


References (APA Style)
Abdul Rahim Abdul Hamid & Ors v Perdana Merchant Bankers Bhd & Ors. (1998). Malayan Law Journal.
Bills of Exchange Act 1882.
Bills of Exchange Act 1949.
Cheques Act 1957.
Financial Services Act 2013.
Uniform Commercial Code, Article 4–104(1)(e).

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