Proposed UK collective claims target Mastercard and Visa over card fees

Claimant groups have lodged proposed collective actions in the United Kingdom against Mastercard and Visa, alleging the card networks levied excessive fees. The claimants put the combined amount at as much as £5 billion, a figure that reflects their own position rather than a calculated loss. Both networks reject the allegations. Because the actions are still at the proposal stage, no court has pronounced on them. The filings were made on Monday, October 26, 2026, and were reported in a Benzinga article dated October 27, 2026. They arrive a few days ahead of Mastercard's third-quarter 2026 results, due October 29, and join the interchange and fee disputes the company already contends with in several other countries.

1. Law firms filed proposed UK class actions on Monday, October 26, 2026, according to a Benzinga report dated October 27, 2026, seeking as much as £5 billion combined from Visa and Mastercard.
2. The claims allege that the networks charged excessive card fees; Mastercard and Visa both dispute these allegations.
3. Mastercard is scheduled to release its third-quarter 2026 financial results on October 29, 2026.
4. The actions are proposals only; no ruling on certification or on the merits has been reported.