Mandate Betrayed: The Legacy of State Bank of India v. Shyama Devi in Banking Law

Headline: Mandate Betrayed: The Legacy of State Bank of India v. Shyama Devi in Banking Law

 To the Point

The Supreme Court’s decision in State Bank of India v. Shyama Devi established that a bank is strictly liable when it debits a customer’s account based on an unauthorised or forged instruction. Even absent negligence, paying against a forged signature amounts to the tort of conversion. This case is a cornerstone in protecting depositors’ rights and shaping Indian banking jurisprudence.

Abstract

This article analyses the landmark ruling in State Bank of India v. Shyama Devi, where the Supreme Court clarified that banks must honour only genuine mandates of their customers. Payment on a forged signature, even if unnoticed by the bank, amounts to conversion, rendering the bank liable to refund the loss. The case affirms the fiduciary relationship between banks and depositors and underlines the strict duty imposed on banks to protect customer accounts.

The Supreme Court’s ruling in State Bank of India v. Shyama Devi marks a turning point in Indian banking law, clarifying the extent of a banker’s liability when handling customer accounts. This landmark case involved unauthorised withdrawals made through forged signatures, where the bank mistakenly honoured forged cheques and debited the account of Shyama Devi, an innocent depositor. The Court, rejecting the bank’s defence of good faith and absence of negligence, ruled that payment contrary to the customer’s mandate amounts to the tort of conversion, attracting strict liability.

This abstract examines the judgment’s significance by highlighting three critical dimensions. Firstly, it reinforces the fiduciary nature of the banker-customer relationship, imposing an absolute duty on banks to act strictly in accordance with the customer’s instructions. Secondly, it establishes that the doctrine of conversion applies to banking transactions — any unauthorised dealing with customer funds, regardless of intent or diligence, is actionable. Thirdly, it affirms that the risk of fraud or forgery must fall on the bank, not the depositor, thereby enhancing public confidence in banking institutions.

The decision continues to guide Indian jurisprudence, shaping how banks approach due diligence and risk management. It balances the operational freedom of banks with the fundamental need to protect depositors, illustrating the judiciary’s commitment to uphold the sanctity of customer mandates even in the face of sophisticated frauds. This abstract thus situates Shyama Devi as not merely a dispute over a forged cheque, but as a case that articulates enduring principles vital for safeguarding trust in India’s banking system.

 Legal Jargon

The judgment pivots on key doctrines and principles:

  • Mandate: The specific authority granted by a customer to the bank to operate their account.
  • Conversion: A tort involving wrongful dealing with someone else’s property in a manner inconsistent with their rights.
  • Fiduciary Duty: A duty to act with utmost honesty and care, recognising the bank’s role as a trustee of the customer’s funds.
  • Negligence: Failure to exercise the care expected of a prudent banker.
  • Strict Liability: Responsibility imposed without proof of negligence, once an unauthorised debit is established.

 The Proof

The Court’s reasoning draws support from established legal principles:

  • Under common law and Indian practice, banks must act strictly per the customer’s mandate. Payment without proper authority — even if induced by fraud — is unauthorised.
  • Section 131, Negotiable Instruments Act, 1881 grants banks protection when collecting crossed cheques in good faith and without negligence. However, this does not apply when a bank itself pays out against a forged cheque.
  • By allowing withdrawal on a forged signature, the bank committed the tort of conversion, making it strictly liable to repay the amount.

Case Laws

State Bank of India v. Shyama Devi, (1978) 3 SCC 399

Facts:
Shyama Devi held a savings account. A fraudster forged her signature and withdrew money. The bank, failing to detect the forgery, debited her account.

Issue:
Was the bank liable despite claiming it acted in good faith and without negligence?

Judgment:
The Supreme Court held the bank strictly liable. By honouring an unauthorised instruction, the bank violated the customer’s mandate and committed conversion. Good faith or the absence of negligence could not relieve the bank of liability.

Legal Reasoning:
The relationship between bank and customer is based on trust, imposing an absolute duty on banks to act according to the customer’s instructions. Fraud by a third party cannot absolve the bank from responsibility.

Supporting Precedents:

  • Canara Bank v. Canara Sales Corporation, (1987) 2 SCC 666: Bank was held liable for paying cheques forged by an employee, affirming the duty to verify signatures.
  • Lloyds Bank Ltd. v. Chartered Bank of India, AIR 1929 PC 297: Recognised that payment on a forged cheque is an act of conversion.

Conclusion

The Shyama Devi judgment crystallised a fundamental rule: a bank must act strictly within the scope of its customer’s mandate. Payment against a forged or unauthorised instrument breaches this duty and results in automatic liability under the doctrine of conversion. This principle reinforces public confidence in banking institutions and ensures that depositors’ funds remain protected, even against sophisticated fraud.

The case stands as a milestone, reminding banks that the duty to guard customer accounts is absolute and non-delegable. By shifting the risk of fraud to banks, the law prioritises depositor protection — an approach that remains crucial in today’s digital banking era.

 FAQ

Q1. What duty does a bank owe under the Shyama Devi judgment?
Banks must act strictly according to the customer’s mandate and cannot debit accounts without proper authorisation.

Q2. Is proof of negligence required to hold a bank liable?
No. Once a bank pays against a forged or unauthorised instrument, it is strictly liable under the tort of conversion.

Q3. Why is this case significant?
It upholds depositor rights by establishing that banks bear the risk of fraud if they act beyond the customer’s mandate.

By: Samriddha Ray,3rd Year, St. Xavier’s University, Kolkata

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