The High Court Rules That Loan Clauses Allowing Banks to Change Interest Rates Unilaterally Are Unenforceable Without Both Parties' Consent

Facts

Gulberg Hides and Skins Uganda Limited obtained loans from Bank of Africa Uganda Limited. Its directors, including Abdul Rajab Kalule, issued personal guarantees for the debts. After repayment defaults, the company sued the bank for unilaterally raising interest rates and charging un-notified fees. The bank counterclaimed under Order 36 to recover the debt and joined the guarantors personally. The guarantors sought unconditional leave to defend, citing corporate veil protection and triable disputes over interest calculations.

Issues for Determination

1. Whether the Plaintiff was entitled to recover the sum of USD 151,716 from the Defendant.

2. Whether the Defendant lawfully disposed of the properties comprised in Plot 116 Block 90 Mawokota-Mutuba and Block 378 Plot 325 Katale Seguku.

3. Whether the Counter-Defendants were indebted to the Counterclaimant in the sums of USD 71,789 and UGX 501,930,300.

4. What remedies were available to the parties.

Legal Representation

Counsel Obed Mwebesa of M/s Obed Mwebesa & Associates Advocates appeared for the Plaintiff while Counsel Martin Ssekatawa of M/s SM & Co. Advocates (formerly Shonubi, Musoke & Co. Advocates) appeared for the Defendant/Counterclaimant.

Parties' submissions

Plaintiff's submission

The Plaintiff argued that the bank made an unauthorized/fraudulent debits and transfers, withheld statements until 2016, and that the joint auditor was biased for relying on bank-provided documents without proper vouchers. It challenged three specific cheques as forged, tampered, or outside its series.

The Plaintiff further contended that the bank unlawfully sold mortgaged securities without a valid debt, and that the bank's indemnity counterclaim was premature because the main judgment was under appeal (Civil Appeal No. 170 of 2022). It cited Uganda Commercial Bank v Kigozi for restitutio in integrum and Prof. Ephraim Kamuntu v AG to support 25% commercial interest.

Defendant's/counter claimant's submission

The Defendant submitted that the Plaintiff was bound by the joint auditor’s findings under Trial by Reference (Judicature Act ss 26–27), citing Integrated Training v Kerajaan, Barclays Bank v Nylon Capital, and Campbell v Edwards that courts should not disturb expert reports absent fraud, collusion, or manifest error.

It dismissed cheque disputes as a minor numbering error (000098), placed the burden of proving tampering on the Plaintiff (no expert called for 000210), and relied on the Auditor’s Addendum confirming Kalule signed for the USD 15,000 withdrawal. On the counterclaim, the audit showed USD 71,789 outstanding, the property sale complied with the Mortgage Act, and the bank was entitled to UGX 501,930,000 indemnity due to spousal consent misrepresentation.

The Defendant further argued that interest rate variations were lawful under the facility letters (Masiira v Crane Bank) with acquiescence creating estoppel; no refund was due as debits were valid and bank statements carry prima facie value (Uganda Commercial Bank v Akamba); and the guarantors were personally liable under independent guarantees, rendering the corporate veil defence inapplicable (Guaranty Trust Bank v Mwesigwa).

Court's findings

On unilateral variation of interest rates and ledger fees

The Court observed that while banks frequently insert standard variation clauses into facility letters, a financial institution cannot unilaterally vary interest rates or ledger fees in a vacuum. The Court found that any variation must be driven by objective market indicators, such as changes in the Bank of Uganda central bank rate, and must be communicated to the customer in writing beforehand. It held that:

"Unilateral adjustments made surreptitiously or restrictively, without explicit contractual triggers or customer notification, constitute a material breach of the banker-customer contract."

On personal liability of individual guarantors

The Court found that when company directors or third parties execute a personal deed of guarantee to secure facility lines for a corporate entity, they voluntarily step outside the corporate veil.

It held that the doctrine of separate legal personality does not shield individuals who have signed personal undertakings, and that once default occurs on the principal account, the bank possesses an immediate and independent cause of action against the guarantors personally.

On liquidated claims and special damages

The Court held that a claim for a specific sum of money is a claim for special damages, which under Ugandan jurisprudence cannot merely be asserted but must be strictly pleaded and proven with mathematical certainty.

Read the full case below

Judgement CS 243 of 2017 GULBERG.pdf

Download PDF • 3.81MB

KEY TAKEAWAYS

1. Commercial banks cannot rely on broad, boilerplate clauses in facility letters to change interest rates or ledger fees at will. For a variation to be legally enforceable, it must rest on a clear contractual trigger, such as prior written notification to the customer, and must be transparent.

   
   

2. While signing a personal guarantee exposes a director's personal assets by bypassing the corporate veil, that liability remains strictly co-extensive with the principal debt. Where a bank inflates a company's debt through unlawful fees, the guarantor's personal exposure is correspondingly reduced.

   
   

3. Under the Contracts Act, where a bank varies the underlying credit terms or interest rates without the guarantor's express consent, the guarantor may be discharged from liability for obligations arising after the change.