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Banker-Customer Relationship: Complete Guide for Bank Promotion Exams

Last updated by Jai on May 20, 2026

Banker-Customer Relationship: Complete Guide for Bank Promotion Exams

⚡ Quick Facts — Banker-Customer Relationship

Primary relationshipDebtor-Creditor (deposit accounts) — Foley v Hill, 1848
Who is a “customer”?One transaction sufficient — Ladbroke v Todd, 1914 (no duration requirement)
Duty of secrecyBanker must not disclose customer information — Tournier v National Provincial Bank, 1924
4 exceptions to secrecyLaw of the land · Public duty · Bank’s own interest · Customer’s express/implied consent
General lienBanker’s lien covers all dues — not just specific debt (right to retain all securities)
Right of set-offCombine debit and credit accounts of same customer in same capacity
Clayton’s RuleFirst credit in = first debit discharged (FIFO appropriation for running accounts)
Garnishee order nisiFreezes account; order absolute directs bank to pay judgment creditor
Minor’s accountMinor can open/operate savings account; cannot be held liable for loan taken as minor

Banker-customer relationship is a fundamental topic at all promotion exam scales — typically 4–6 marks. It covers the legal nature of the relationship, banker’s duties and rights, and rules for special categories of customers. Know both the relationship types and the landmark case names cold.

Who is a “Customer”?

There is no statutory definition of “customer” under the Banking Regulation Act. Based on case law:

  • Ladbroke v Todd (1914): A single transaction is sufficient to make a person a customer — no requirement of duration or regular dealings
  • The relationship begins from the moment the bank agrees to open an account
  • KYC compliance is a prerequisite — without completing KYC, the banker-customer relationship is not formally established
⚠ Exam Trap: Many students believe a person must have a “regular” or “long-standing” account to be a customer. This is wrong. Per Ladbroke v Todd, even one transaction is enough. Also, a person who sends a cheque for collection (without an account) is NOT a customer — there must be an account relationship.

General Relationship: Debtor and Creditor

The primary relationship is established in Foley v Hill (1848): when a customer deposits money, the bank becomes the owner of the money and a debtor to the customer. The customer becomes the creditor.

  • Bank is under no obligation to keep the money separately — it can use deposited funds in its business
  • Bank’s only obligation is to repay an equivalent amount on demand
  • This is fundamentally different from a bailment (where the same goods must be returned)
Account TypeBank’s RoleCustomer’s Role
Deposit account / Credit balance in CC/ODDebtorCreditor
Loan account / Debit balance in CC/ODCreditorDebtor

Special Relationships

Transaction / ServiceBank’s RoleCustomer’s Role
Collection of cheques, TT, MT; standing instructions; purchase/sale of securities; currency chestAgentPrincipal
Safe custody of articles (documents, jewellery)BaileeBailor
Safe deposit lockersLessor / Licensor / LandlordLessee / Licensee / Tenant
Mortgage of immovable property (by customer to bank)MortgageeMortgagor
Pledge of securities / sharesPledgee / PawneePledgor / Pawnor
Hypothecation of movable assetsHypothecateeHypothecator
Issue of duplicate draft (customer provides indemnity)IndemnifiedIndemnifier
Payment of a banker’s draft / trust accountsTrusteeBeneficiary
Letter of creditAgent / Principal (depending on stage)Applicant
⚠ Exam Trap — Locker relationship: Banks have argued that the locker relationship is purely Lessor-Lessee (landlord-tenant) and they have no liability for the contents. However, RBI guidelines (2023 locker norms) make banks liable for loss due to their own negligence or fraud — up to 100 times the annual locker rent. This is tested at higher scales.

Banker’s Obligations to Customers

1. Duty to Honour Cheques

The bank must honour a customer’s cheque if all the following conditions are met:

  • Sufficient funds in the account (or arrangement for overdraft)
  • Cheque is properly drawn and duly signed
  • Presented within validity period (3 months)
  • No legal bar (garnishee order, stop payment instruction, etc.)
  • Presented at the right branch (for non-CBS banks — less relevant today)

Wrongful dishonour of a cheque exposes the bank to liability for damages — more serious for a trader whose reputation is affected (small balance, large damages principle).

2. Duty of Secrecy (Tournier v National Provincial Bank, 1924)

The bank must not disclose any information about a customer’s account or transactions to any third party. The duty survives even after the account is closed.

Four exceptions — disclosure is permitted when:

  1. Law of the land — statutory compulsion (Income Tax, PMLA, FEMA disclosures to authorities)
  2. Public duty — disclosure in the interest of the country (e.g., in times of national security)
  3. Bank’s own interest — when the bank itself needs to disclose to recover dues (filing a suit)
  4. Customer’s express or implied consent — customer gives permission, or implied by the nature of the transaction (e.g., reference to employer for salary account)
⚠ Exam Trap: The duty of secrecy comes from Tournier — a common law (case law) principle, NOT from the Banking Regulation Act. Banks share credit information with CIBIL/credit bureaus under customer’s implied consent at the time of loan application. This is a valid exception under “customer’s implied consent.”

3. Duty to Maintain and Render Accounts

  • Bank must maintain accurate records of all transactions
  • Must provide account statements on request
  • Passbook entries / e-statements are prima facie evidence of the account balance

Banker’s Rights

1. General Lien

A banker’s lien is a general lien — the right to retain all securities and assets deposited by the customer until all dues (not just the specific debt) are paid. It is superior to a particular lien because it covers all monies owed.

  • Applies to: negotiable instruments (cheques, bills), securities lodged for collection
  • Does NOT apply to: items deposited for safe custody, items deposited for a specific purpose inconsistent with the lien
  • Banker’s lien implicitly carries the right to sell — making it effectively a pledge

2. Right of Set-Off

The bank can combine two accounts of the same customer — a credit balance in one and a debit balance in another — and set one against the other.

Conditions:

  • Both accounts in the same name and same capacity (cannot set off personal account against business account)
  • The debt must be due and payable — cannot set off against a future debt
  • Reasonable notice must be given to the customer before exercising set-off

3. Right of Appropriation (Sections 59–61, Indian Contract Act)

When a customer makes a payment without specifying which debt it should be applied to, the bank has the right to appropriate it to any lawful debt (including time-barred debts, which the debtor could not have insisted on).

Clayton’s Rule: In a running account (like a CC account), the first debit entry is discharged by the first credit entry — FIFO (First In, First Out). This is critical for limitation tracking in overdraft accounts.

Special Categories of Customers

Customer TypeKey Rules
MinorCan open and operate savings account (RBI: independently from age 10); cannot take loans; contract with minor is void ab initio; guardian can open account on minor’s behalf; minor becomes fully competent on attaining majority (18 years)
Illiterate personsAccount opened with thumb impression and photograph; two witnesses required for nomination; no cheque book issued; withdrawals by thumb impression in presence of authorised bank official
Blind personsBank must ensure they understand the nature of the transaction; trusted witness may be used; cheque book may be issued with safeguards
Joint Hindu Family (JHF)Karta (manager) operates the account; all coparceners are liable; firm does not dissolve on death of coparcener; separate account for JHF business
Partnership firmsAccount opened on strength of Partnership deed; all partners jointly and severally liable; death/insolvency of partner dissolves firm (unless deed says otherwise)
CompaniesAccount opened on Board resolution; operations governed by Memorandum and Articles of Association; ultra vires transactions are void
TrustsAccount in name of trustees; operations per trust deed; no personal liability of trustees on trust’s debts (unless they acted personally)

Garnishee Order

A garnishee order is issued by a court directing the bank (garnishee) to attach the customer’s funds and pay to the judgment creditor (decree holder).

StageEffect
Order Nisi (interim)Bank freezes the customer’s account — no further withdrawals permitted
Order AbsoluteBank pays the attached amount to the court / judgment creditor
  • Only credit balances can be attached — debit balances (loans due by customer) cannot
  • Fixed deposits can be attached even before maturity
  • Bank can protect its own right of set-off before obeying garnishee order — bank’s dues come first
  • Funds in trust accounts or accounts held in fiduciary capacity are generally not attachable under garnishee order
⚠ Exam Trap: A garnishee order attaches only funds already in the account at the time of the order — not future credits (unless the order specifically says so). Also, the bank’s own right of set-off (for its own dues from the customer) takes priority over the garnishee order.

Practice Banker-Customer MCQs

Relationship types, secrecy exceptions, lien vs set-off vs appropriation, and special customers are examiner favourites. Our course has 15+ scenario-based MCQs.

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One-Liners for Quick Revision

  1. Primary banker-customer relationship: Debtor-Creditor — established in Foley v Hill (1848).
  2. Who is a customer: one transaction is enough — Ladbroke v Todd (1914); no duration required.
  3. Deposit account: bank is Debtor, customer is Creditor. Loan account: bank is Creditor, customer is Debtor.
  4. Collection of cheques / standing instructions: bank = Agent, customer = Principal.
  5. Safe custody articles: bank = Bailee, customer = Bailor.
  6. Safe deposit lockers: bank = Lessor / Licensor, customer = Lessee / Licensee.
  7. Duty of secrecy: Tournier v National Provincial Bank (1924) — common law principle, not BR Act.
  8. 4 exceptions to secrecy: Law of the land · Public duty · Bank’s own interest · Customer’s consent.
  9. Bank’s general lien covers ALL dues — not just the specific debt against which security was given.
  10. Set-off: same customer, same capacity, debt must be due — and reasonable notice required.
  11. Clayton’s Rule: FIFO — first debit discharged by first credit in running accounts.
  12. Minor’s contract with bank for loan is void ab initio — cannot be ratified on attaining majority.
  13. Illiterate customers: thumb impression + photo + two witnesses; no cheque book.
  14. Karta operates JHF account; all coparceners are jointly and severally liable.
  15. Garnishee order nisi = freeze; order absolute = pay. Bank’s own set-off takes priority.
  16. Only credit balances are attachable under garnishee order — not debit balances.
  17. RBI 2023 locker norms: bank liable for loss due to own negligence up to 100× annual locker rent.

Frequently Asked Questions

What is the primary legal relationship between a banker and customer?

The primary relationship is Debtor-Creditor, established by the landmark case Foley v Hill (1848). When a customer deposits money, the bank becomes the owner of that money and a debtor to the customer — obligated to repay an equivalent amount on demand. The bank is NOT a trustee of deposited funds; it can use the money in its business. When the customer takes a loan, the roles reverse — the customer becomes the debtor and the bank becomes the creditor.

What are the four exceptions to a banker’s duty of secrecy?

The banker’s duty of secrecy (from Tournier v National Provincial Bank, 1924) permits disclosure in four situations: (1) Law of the land — when disclosure is compelled by statute (Income Tax, PMLA, FEMA); (2) Public duty — in the national interest; (3) Bank’s own interest — when the bank must disclose to recover its dues (e.g., filing a suit); (4) Customer’s express or implied consent — the customer permits it, or consent is implied (e.g., sharing credit information with bureaus is covered by implied consent given at loan application).

What is Clayton’s Rule and how does it apply to banking?

Clayton’s Rule is the principle of FIFO (First In, First Out) appropriation in a running account — the first debit entry in the account is discharged by the first credit received. This is important in cash credit / overdraft accounts: if a borrower makes deposits, they discharge the oldest outstanding debit first. Banks use this to track limitation periods on running accounts — each credit resets the clock only for the oldest debit it covers. This is derived from Sections 59–61 of the Indian Contract Act.

What is a garnishee order and how does it affect a bank account?

A garnishee order is a court order directing the bank (the garnishee) to freeze and/or pay the customer’s account balance to a judgment creditor. It comes in two stages: Order Nisi (interim) — the bank freezes the account and stops further withdrawals; Order Absolute — the bank pays the attached amount to the court. Only credit balances are attachable; the bank can first exercise its own right of set-off (to recover its own dues from the customer) before complying with the garnishee order.

What are the rules for opening a bank account for a minor?

RBI permits minors to open and independently operate savings accounts. A minor aged 10 years and above may open and operate a savings account independently. A guardian may open an account on behalf of a minor below the permissible age. Crucially, a contract with a minor is void ab initio under the Indian Contract Act — a bank cannot recover a loan given to a minor, even after the minor attains majority (ratification is not possible for void contracts). Banks must therefore not sanction loans with minors as borrowers.

What is the difference between a banker’s lien and the right of set-off?

A banker’s general lien is the right to retain securities and instruments deposited by the customer until all dues (not just a specific debt) are paid — it applies to tangible assets. The right of set-off is the right to combine two accounts — a credit balance in one account and a debit balance in another — and use one to offset the other. Set-off requires both accounts to be in the same name and same capacity, and the debt must be currently due. The lien operates on assets in the bank’s possession; set-off operates on account balances.

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