As an expert in Principles of Banking Law with over 20 years in the Ghanaian banking sector, including senior roles in compliance and corporate governance at institutions like Ecobank Ghana, I draw on practical applications under the Banks and Specialised Deposit-Taking Institutions Act, 2016 (Act 930), Bank of Ghana directives, and common law principles adapted to Ghana. The banker-customer relationship is foundational to banking operations, emphasizing contractual obligations, fiduciary duties, and regulatory compliance to ensure resilience and ethical practices. Below, I address each part comprehensively, incorporating real-world examples from Ghanaian banking, such as account management during the 2017-2019 banking sector cleanup.

a. i. Who is a customer of a bank?

A customer of a bank is any person or entity that maintains an account with the bank or engages in banking services where a contractual relationship is established. In Ghanaian law, this is not strictly defined by statute but derived from common law principles, as seen in cases like Great Western Railway Co. v. London and County Banking Co. Ltd (1901), which has influenced Ghanaian jurisprudence. Key elements include:

• Account Maintenance: The individual or entity must have an account (e.g., current, savings, or fixed deposit) with the bank. Simply walking into a bank branch or using non-account services like currency exchange does not qualify one as a customer.
• Duration and Regularity: The relationship begins upon account opening and acceptance of terms. In practice, under BoG’s Corporate Governance Directive 2018, banks like GCB Bank verify identity via KYC (Know Your Customer) processes compliant with Act 930, ensuring the customer is onboarded with proper documentation (e.g., ID, proof of address).
• Types of Customers: This includes individuals, companies, partnerships, minors (with guardians), trustees, executors, and clubs. For instance, during the 2022-2024 Domestic Debt Exchange Programme (DDEP), institutional customers like pension funds were treated as customers when restructuring accounts.
• Practical Insight: In Ghana, fintech integrations under the Payment Systems and Services Act, 2019 (Act 987), have expanded this to include mobile money users linked to bank accounts, but pure mobile wallet holders without a bank account are not bank customers.

In summary, a customer is defined by the existence of a banker-customer contract, typically evidenced by an account.

a. ii. What is the basic relationship between a bank and its customer?

The basic relationship between a bank and its customer is that of debtor and creditor, governed by contract law principles under Ghana’s common law and Act 930. This is not a fiduciary or trustee relationship unless specified (e.g., in trust accounts). Key aspects include:

• Debtor-Creditor Dynamic: When a customer deposits money, the bank becomes the debtor (owing the funds back on demand), and the customer is the creditor. Conversely, in lending, the roles reverse. This stems from Foley v. Hill (1848), a principle upheld in Ghanaian courts.
• Contractual Basis: The relationship arises from express terms (e.g., account opening forms) and implied terms (e.g., duty of secrecy). Under BoG’s directives, banks must provide clear terms, avoiding undue influence or misrepresentation.
• Rights and Duties:
  • Bank’s duties: Maintain secrecy (except under legal compulsion, e.g., court orders or anti-money laundering under Act 930), honor cheques if funds suffice, provide statements, and act with reasonable care (e.g., preventing fraud as per Cyber and Information Security Directive 2020).
  • Customer’s duties: Provide accurate information, not draw cheques without funds, and notify changes (e.g., death or incapacity affecting the account).
• Termination: The relationship ends by mutual agreement, notice, or events like death/bankruptcy. In practice, during the 2017-2019 cleanup, customers of collapsed banks like UT Bank had relationships transferred to consolidated entities like Consolidated Bank Ghana.
• Modern Applications: With digital banking trends in 2025, this relationship includes data protection under BoG’s sustainable banking principles, ensuring ethical handling of customer information.

This contractual framework enables banking while protecting both parties, with BoG oversight for compliance.

b. What rights does the bank have in relation to its customers’ account?

Banks have several rights over customer accounts to manage risks, ensure compliance, and recover dues, balanced against duties under Act 930 and common law. These rights are exercised judiciously to avoid liability for negligence or breach. Key rights include:

• Right of Set-Off: The bank can combine accounts of the same customer to offset debts. For example, if a customer owes on a loan in one account but has credit in another, the bank can apply the credit without notice, per Garnett v. McKewan (1872). In Ghana, this is common in overdraft recovery, subject to BoG’s Liquidity Risk Management Guidelines.
• Right of Lien: A general lien allows the bank to retain securities or properties (e.g., shares deposited for safe custody) until debts are cleared. This does not apply to items specifically for safe custody without lien clauses. Practical example: Stanbic Bank Ghana exercising lien on collateral during default.
• Right to Charge Fees and Interest: Banks can deduct reasonable charges for services (e.g., maintenance fees) and interest on overdrafts, as per contract terms. BoG regulates this to prevent exploitative practices, aligning with Basel III-adapted capital requirements.
• Right to Close Accounts: With reasonable notice (typically 30 days), the bank can close accounts for inactivity, suspicion of fraud, or non-compliance. During the DDEP, banks like Access Bank Ghana exercised this for high-risk accounts.
• Right to Disclosure in Certain Cases: While secrecy is a duty, banks have rights to disclose under compulsion (e.g., BoG audits, court orders) or to protect interests (e.g., fraud alerts).
• Right to Freeze Accounts: Under anti-money laundering laws or BoG directives, banks can freeze suspicious accounts, as seen in post-2019 cleanup enforcements.

In practice, these rights enhance profitability and risk management but must comply with BoG notices (e.g., BG/GOV/SEC/2023/05 on recapitalization) to avoid lawsuits for wrongful dishonor or conversion. I recommend banks document exercises of these rights meticulously for audit trails