Westpac Banking Corporation v Murphy

Westpac Banking Corporation sought leave to appeal from a District Court judge's refusal to grant summary judgment against Mr. Murphy. The dispute concerned a merchant facility arrangement approved by Westpac, which allowed Mr. Murphy, a solicitor, to accept payment for his services via client credit cards. Westpac sought to recover monies it claimed were owed by Mr. Murphy under this arrangement, alleging that certain transactions were unauthorised.

The Court of Appeal was required to determine whether a contractual arrangement existed between Westpac and Mr. Murphy regarding the merchant facilities, and if so, what its terms were, including any implied terms. Crucially, the court had to consider whether there was a genuine dispute that some of the credit card transactions were unauthorised, and what the position of Westpac was as a bank in disputes between cardholders and merchants, particularly concerning its power to charge back transactions and its entitlement to recover monies from the merchant.

The Court of Appeal found that the District Court judge had erred in refusing summary judgment. The court reasoned that the terms and conditions of the merchant facilities arrangement, as approved by Westpac, governed the relationship. It was determined that there was no genuine dispute that the transactions in question were unauthorised in a manner that would relieve Mr. Murphy of his liability to Westpac under the agreement. The court applied principles relating to contractual obligations and the rights and responsibilities of parties to merchant facility agreements.

Leave to appeal was granted, and the appeal was allowed. The court made orders pursuant to its judgment, though these were subsequently varied by a later judgment.