Banker's duty of confidentiality

Published: 17 Nov 2022
Type: Insight

The Mauritian Supreme Court re-affirms banks’ statutory duty of confidentiality towards their customers

 

A bank’s duty of confidentiality to its customers, as well as the obligation on banking institutions to preserve the details and secrets of its clients, are long-established principles. Whilst some may argue, on the basis of the Norwich Pharmacal principles, that they are entitled by law to request the disclosure of limited information from banking institutions, the Mauritian Chief Justice has recently clarified the position of the bank in respect of its overriding duty of confidentiality towards its clients and any possible latitude towards disclosure.

In the present article, we probe into how the Mauritian Supreme Court in Stanford Asset Holding Limited & Anor v Afrasia Bank Limited 2022 SCJ 333 safeguarded the statutory duty of confidentiality imposed on banks towards its customers faced with a “no-objection” by the bank.

In Stanford (supra), the Applicant applied to the Supreme Court for an order

(i) compelling the Afrasia Bank Limited (Bank) to disclose to it the full name(s), addresses, account numbers and particulars of the recipient of any part of a specified sum of money as from a specified date from a designated account held with the Bank and

(ii) directing the Bank to disclose to the Applicant all supporting documents relating to the account especially regarding the authorized signatories .

In support of its request, the Applicant argued that, pursuant to section 64(10) of the Banking Act, the Supreme Court was empowered to make an order of disclosure. Alternatively, the Applicant contended that a disclosure could be granted under the Norwich Pharmacal principles.
The Bank did not object to the Applicant’s request. However, in view of the nature of the request, the Supreme Court invited the parties to make submissions as regards the legal basis for the request.

After a perusal of all the applicable laws by the Supreme Court, it clearly emerges that there is in Mauritius:

  • a strict duty of confidentiality prohibiting banks from disclosing any information relating to the banking transactions of any of its clients;
  • an explicit and special legal framework for the permissible disclosure of information to third parties by a bank. This is dictated essentially by compelling public interest to safeguard the integrity of the national and international financial systems;
  • a legal framework which precludes banks from making any disclosure except by compulsion of law or following a court Order;
  • a comprehensive and specific legislative framework which sets out the conditions in which confidential information relating to a customer’s banking affairs may be disclosed by any of the designated authorities.

As regards the alternative argument offered by the Applicant, the Supreme Court observed that whilst the Norwich Pharmacal relief is a flexible common law remedy, it remains an exceptional and intrusive jurisdiction. Norwich Pharmacal orders are not granted on the mere asking especially against entities such as banks which are bound by a statutory duty of confidentiality to their customers. It is incumbent upon an applicant to satisfy the court that he has established that all the conditions for a Norwich Pharmacal order are present.

Given that the Supreme Court determined that the Applicant did not produce sufficient valid reasons to justify the granting of a Norwich Pharmacal order, the request was set aside in the face of the no objection from the Bank.

The position taken by Supreme Court in this judgment is a welcome one as it upholds and safeguards the sacrosanct principle of confidentiality which binds a bank to each of its customers.

 

Share
More publications
IWD website preview
9 Mar 2026

International Women’s Day 2026 Roundtable: Rights. Justice. Action. For all women and girls.

As we recognise International Women’s Day 2025, we are reminded that gender equality is not just a vision – it’s a call to action.

Appleby-Website-Mergers-and-Acquisitions
2 Mar 2026

The Cost of Dissent: Managing Liquidity and Statutory Validity in Major Mauritian Transactions

Mergers and Acquisitions (M&A) are intricate manoeuvres that demand more than just commercial synergy; they require absolute statutory precision.

Appleby-Website-Corporate-Practice
24 Feb 2026

Receivership - Does a fixed charge rank ahead of a banking or fiscal privilege?

The question of priority ranking between the different types of securities in Mauritius is not purely technical. It is a fundamental question at the very heart of creditor protection, enforcement and the stability and security of secured lending.

Appleby-Website-Fund-Finance
28 Jan 2026

Fund Finance Laws and Regulations 2026 – Mauritius

The Mauritius fund industry demonstrated significant resilience and adaptability in 2025, successfully navigating a complex period of global tax reform and heightened regulatory standards. The year was defined by the integration of the 2025 Finance Act’s new tax framework (including the Qualified Domestic Minimum Top-Up Tax, or QDMTT) and a reinforced focus on economic substance, such as the two resident director rule for global business companies (GBCs). This pivot has further solidified the jurisdiction’s move from a tax-led financial centre to a substance-based one. Private equity and debt funds, particularly those focused on African and Asian markets, continue todominate the landscape, with Mauritius retaining its top-tier ranking as an investment gateway for Africa. The variable capital company (VCC) structure remains a popular choice for its flexibility, supplemented by a mature ecosystem of legal and administrative experts.

Appleby-Website-Transport-and-Logistics
13 Jan 2026

Maritime Due Diligence: Mauritius at crossroads

The year 2025 has witnessed a wave of revocations of Authorised Companies’ Licenses – more than 25 - by the Financial Services Commission (FSC) in Mauritius, pursuant to section 74(5) of the Financial Services Act.

Appleby-Website-Banking-and-Financial-Services
8 Oct 2025

Enforcing Integrity: The UK’s Legal Arsenal Against Market Abuse

The legal concept of market abuse and the twin concept of upholding market integrity are not new as these were prevalent since the 17th century ¹. As a matter of fact, there is a belief that insider dealing was the root cause of demise of the South Sea Company in the 18th century.

Website-Code-Mauritius-1
9 Sep 2025

Dual Remedies Afforded against the Granting of Injunctions

Actis Consumer Grooming Products Ltd v Super-Max Mauritius [2025 SCJ 388]

Website-Code-Mauritius-1
27 Aug 2025

The Mauritian National Budget 2025/2026 - From abyss to prosperity: Rebuilding the bridge to future

On 05 June 2025, Dr Navinchandra Ramgoolam GCSK, FRCP, Prime Minister of Mauritius, in his capacity as Minister of Finance (Minister of Finance) tabled the National Budget for the fiscal year 2025-2026 under the theme “From Abyss to Prosperity: Rebuilding the Bridge to the Future”.

Appleby-Website-Arbitration-and-Dispute-Resolution
18 Aug 2025

Mauritius as an Ideal Seat for Arbitration

In one of its recent determinations, the Mauritian Supreme Court re-affirmed a line of decisions which confirmed its support to arbitration, whether international or domestic. These determinations reflect its understanding of the needs of business community, characterised by a marked choice to resolve disputes through a private mechanism to allow existing business relationships to thrive.

Appleby-Website-Corporate-Practice
25 Jul 2025

Insider Dealing: A Review of the Treatment in Mauritius, EU and US Federal law

A review of the treatment in Mauritius, the United States and the European Union of the offence of insider trading confirms the contrasting approaches which these jurisdictions have adopted on the issue even though all three jurisdictions share two fundamental concerns namely, (i) the prohibition on an insider to take an unfair advantage by reason of information which he has obtained to the detriment of third parties who are unaware of such information and, (ii) the protection of the integrity of financial markets and investor confidence ¹.