(a) The five circumstances that lead to the determination (termination) of the banker-customer contract are:

1. By mutual agreement: Both the bank and the customer agree to end the relationship, often formalized in writing to avoid disputes.
2. By notice from either party: The customer can close the account at any time, while the bank must give reasonable notice (as established in Prosperity Ltd v Lloyds Bank Ltd [1923]), unless in exceptional cases like fraud.
3. Death of the customer: The contract terminates automatically upon the customer’s death, requiring the bank to freeze the account until personal representative’s present probate or letters of administration, per the Administration of Estates Act, 1961 (Act 63).
4. Mental incapacity of the customer: If the customer becomes mentally incapacitated, the contract ends, and the bank must await appointment of a guardian or receiver under the Mental Health Act, 2012 (Act 846).
5. Bankruptcy or insolvency of the customer: Upon bankruptcy, the contract terminates, and the account is handled by the trustee in bankruptcy under the Insolvency Act, 2006 (Act 708).

In Ghanaian banking practice, banks like Ecobank Ghana document these events meticulously to comply with BoG’s Operational Risk Management Guidelines, preventing losses as seen in the 2017-2019 cleanup where insolvency issues plagued banks like UT Bank.

(b) Yes, I agree that the banker-customer relationship continues notwithstanding the determination of the banker-customer contract. The contract may terminate, but the underlying debtor-creditor relationship persists until all outstanding obligations are settled, such as clearing pending cheques, recovering loans, or handling incoming credits.

This is supported by the landmark case of Joachimson v Swiss Bank Corporation [1921] 3 KB 110, where the court held that the banker-customer relationship is essentially that of debtor and creditor, repayable on demand, and liabilities (e.g., overdrafts) or assets (e.g., balances) survive termination. In Ghana, this principle is applied under the Banks and Specialized Deposit-Taking Institutions Act, 2016 (Act 930), where banks must manage post-termination transactions ethically, as emphasized in BoG’s Corporate Governance Directive 2018. For instance, during the DDEP (2022-2024), banks continued servicing closed accounts’ bond holdings to ensure compliance and avoid litigation.

(c) In the scenario, the bank’s position is vulnerable to legal challenge, primarily due to failure to provide reasonable notice before closing the account, potentially leading to claims for breach of contract, wrongful dishonor of cheques, or improper handling of post-closure credits. However, the bank may defend based on the customer’s unsatisfactory conduct and implied risks of insolvency.

Key legal principles and analysis:

• Right to Close Account with Reasonable Notice: Under common law, adopted in Ghana, a bank can close an account but must give reasonable notice to allow the customer to make alternative arrangements, as per Prosperity Ltd v Lloyds Bank Ltd [1923] 39 TLR 372, where 14 days was deemed reasonable for a trading account. Here, the bank closed abruptly after the GHC 15,500 cheque presentation (against GHC 15,300 balance, insufficient by GHC 200), without notice, despite the customer’s threat to close. This could constitute breach, exposing the bank to damages, especially since habitual countermanding (stopping cheques) indicates unsatisfactory operation but does not justify immediate closure without warning. In Ghanaian practice, BoG’s directives require banks to document and notify for such actions to mitigate operational risks.
• Handling of Insufficient Funds and Fees: Returning the cheque unpaid due to insufficient funds is justified under the Bills of Exchange Act, 1961 (Act 55), Section 47, as “funds insufficient.” Transferring the remaining GHC 200 to commissions and fees may be permissible if per account terms, but without notice, it could be seen as arbitrary. Banks like Stanbic Ghana often apply such fees but notify customers to avoid disputes.
• Post-Closure Credits and Cheque Return: Receiving the GHC 15,000 Treasury Bill proceeds after closure creates a continuing obligation. The bank should hold these funds in a suspense account for the customer, not reject incoming credits outright. Returning the subsequent cheque as “Account Closed” is correct if the account is terminated, but the customer could claim wrongful dishonor if the closure was improper (per Foley v Hill [1848] 2 HL Cas 28, affirming the debtor-creditor nature). Under Act 930, banks must handle such funds diligently to avoid conversion claims.
• Mitigating Factors for Bank: The customer’s heavy indebtedness and countermanding habits suggest potential insolvency risks, allowing the bank to argue protective closure under “operation of law” or to prevent fraud, aligned with BoG’s Liquidity Risk Management Guidelines. The meeting where the customer threatened closure could be interpreted as implied consent, but this is weak without documentation. In real-world cases, like post-2017 cleanup, banks faced similar suits for abrupt closures, often settling to avoid court.

Overall, the bank risks liability for breach (damages including interest and costs), but can strengthen its position by evidencing the account’s unsatisfactory nature and offering the GHC 15,000 to the customer now. Recommend internal review per BoG’s risk standards to prevent recurrence, emphasizing notice in future closures.