Stock Markets March 17, 2026

Court of Appeal Allows Visa and Mastercard to Seek Review of Interchange Fee Ruling

Permission to appeal granted after tribunal found default multilateral interchange fees breached competition law in lawsuits brought by hundreds of merchants

By Marcus Reed
Court of Appeal Allows Visa and Mastercard to Seek Review of Interchange Fee Ruling

London's Court of Appeal has granted Visa and Mastercard permission to appeal a Competition Appeal Tribunal decision that found their default multilateral interchange fees charged to retailers infringed European competition law. The ruling follows linked lawsuits by hundreds of merchants and was described by the merchants' lawyers as a first finding against the card networks' commercial and inter-regional interchange arrangements. Both companies said interchange remains important to the payments ecosystem, and a claimant lawyer said they expect to resist the appeal at the substantive hearing.

Key Points

  • Court of Appeal has granted Visa and Mastercard permission to appeal a CAT judgment that found their default multilateral interchange fees breached European competition law.
  • The CAT ruling arose from linked lawsuits filed by hundreds of merchants and was described by merchants' lawyers as the first finding against the networks' commercial and inter-regional interchange fees.
  • Both payment networks stated interchange supports the payments ecosystem and benefits consumers, businesses and banks; claimants' counsel said they will resist the appeal at the substantive hearing.

LONDON, March 16 - Visa and Mastercard have been given the right to challenge a tribunal judgment that found their default multilateral interchange fees, applied to retailers, contravened competition law, the Court of Appeal ruled on Tuesday.

The decision follows a Competition Appeal Tribunal (CAT) ruling last year in a set of linked lawsuits brought by hundreds of merchants. In that earlier judgment the tribunal concluded the multilateral interchange fees payable under the two card networks' schemes breached European competition law.

Lawyers for the merchant claimants previously noted the CAT finding marked the first time that the card networks' commercial card and inter-regional multilateral interchange fees had been formally held to infringe competition rules. The Court of Appeal's order on Tuesday, however, permits Visa and Mastercard to proceed with an appeal against the tribunal's finding.

Both companies said in separate public statements that interchange performs an important function within a digital payments ecosystem and that the mechanism yields benefits for consumers, businesses and banks. The statements welcomed the Court of Appeal's decision to allow the legal challenge to advance.

Cian Mansfield of law firm Scott+Scott, representing the claimants, responded to the permission to appeal by saying: "We are confident that we will resist the application successfully at the substantive appeal" - signalling that the claimants intend to oppose the appeal when the substantive hearing takes place.

The development keeps the dispute alive and opens a further phase of litigation in which the appellate court will consider whether the CAT's interpretation of competition law and its application to the networks' default interchange structures should stand.


Context and implications

The Court of Appeal's permission to appeal does not determine the final outcome of the litigation; it allows the card networks to seek a full appellate hearing. The underlying CAT judgment remains in place pending further proceedings, and the substantive appeal will address the legal and factual basis for the tribunal's finding that those specific interchange arrangements infringed competition law.

Risks

  • Ongoing litigation risk for payments networks and merchants while the substantive appeal proceeds - this affects the payments and retail sectors.
  • Legal uncertainty about the treatment of multilateral interchange fees under competition law until the appellate process concludes - this impacts banks, merchants and payment service providers.
  • Potential for prolonged legal proceedings that could extend uncertainty over pricing and contractual arrangements between card networks, issuers, acquirers and retailers.

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