Mastercard Loses $18.6 Billion Class Action Court Ruling

  • Supreme Court gives green light to largest U.K. class action
  • Legal challenge will now be heard by specialist tribunal

Photographer: Roberto Machado Noa/Getty Images

Lock
This article is for subscribers only.

Mastercard Inc. faces the prospect of a 14 billion-pound ($18.6 billion) U.K. class action -- the largest of its kind -- after losing another battle at the country’s highest court over illegal swipe fees.

The Supreme Court ruled in favor of a group behind a proposed British suit, representing some 46 million consumers. Friday’s decision also sets the stage for a slew of class-action cases, after the judges made it easier to bring mass claims.