UK Businesses File £700m CAT Claim over Visa and Mastercard EEA Fees
A £700m claim filed against Visa and Mastercard in the UK Competition Appeal Tribunal alleges the companies imposed unlawful inter-regional fees on UK businesses after Brexit. The claim, led by Ann Pope, covers ~126,000 UK businesses accepting EEA card payments since Oct 2020. Visa and Mastercard raised fees after EU interchange caps ended, according to the Payment Systems Regulator.
How this was made

The 30-second read
Why it matters
The lawsuit introduces a new, sizable legal risk for the two payment networks, potentially leading to damages, regulatory caps, or changes in fee structures that could affect revenue streams.
Market read
The filing could pressure Visa and Mastercard shares and signal broader regulatory risk for the card‑processing industry.
What to watch
The outcome depends on the Competition Appeal Tribunal's certification and the PSR's pending price‑cap proposal, which are uncertain.
Background
A collective proceedings claim of over £700 million has been filed in the UK Competition Appeal Tribunal against Visa and Mastercard for alleged unlawful fee increases after EU interchange caps were removed post‑Brexit.
Ticker impact
Visa is a primary target of a newly filed £700m collective action alleging unlawful fee increases after Brexit.
likely pressure as the market prices in potential liability and regulatory scrutiny
The claim is the first public disclosure of a major legal exposure for Visa, with a multi‑hundred‑million pound liability estimate.
Mastercard is also named in the £700m collective proceeding over post‑Brexit fee hikes on EEA card transactions.
likely pressure as investors assess exposure to the collective claim
The lawsuit introduces a new, material risk for Mastercard similar to Visa, with a large estimated overcharge amount.
Market effects
The payment‑processing sector could see heightened regulatory scrutiny and potential caps on interchange fees.
UK‑based merchants and fintech firms may benefit if fee caps are imposed, while European card issuers could face pressure.
Visa and Mastercard are global players; a UK ruling may influence other jurisdictions' treatment of interchange fees.
Counterpoint
If the claim stalls or is dismissed, the market impact could be muted and shares may rebound on the back of strong fundamentals.
Key entities
- CompanyVisa Inc.
US‑listed payment network accused of five‑fold fee increase.
- CompanyMastercard Inc.
US‑listed payment network also named in the claim.
- Regulatory BodyUK Competition Appeal Tribunal
Venue where the collective action was filed.



