Exclusive to UK businesses with a £100m+ average annual turnover:
If so, you might be entitled to recover a significant portion of the Interchange Fees that Visa and Mastercard unlawfully inflated– even if you’ve since stopped trading.
Through our trusted partnership with KP Law, eligible businesses are supported by a dedicated account manager and given direct access to one of the UK’s leading teams of collective redress lawyers.
Join the ranks of 1000s of satisfied individuals and business owners who have benefited from partnering with us.
Get started with a FREE consultation and let us help you take the first step toward your successful claim.
Our seasoned team knows the claims industry inside out, with deep insight into the tactics and unfair practices of major business and consumer services.
We and KP Law will handle every detail of your claims, ensuring maximum payout for individuals and businesses – so you can stay focused on what matters most.
No win no fee – Other than in very limited circumstances, you only pay if you win. Our fees are fully transparent, so you’ll never face hidden costs.
Every time your business accepted a Visa or Mastercard payment, part of the processing fee went to your customer’s bank (the card issuer) as a Multilateral Interchange Fee (MIF). This fee is charged to your bank (the acquirer) and then passed on to you as part of your merchant service charges.
For years, Visa and Mastercard kept these fees artificially high, favouring issuer banks over merchants and inflating your costs on every qualifying card transaction.
On 27th June 2025, the Competition Appeal Tribunal (CAT) ruled that Visa and Mastercard’s
MIFs breached competition law – meaning they were anti-competitive, as a result, your business likely paid more than it should have to accept these payments.
These claims form part of ongoing “Umbrella Proceedings” which are already underway in the Competition Appeal Tribunal, which is managing several different cases against Visa and Mastercard over interchange fees.
KP Law’s claim will establish Visa and Mastercard’s liability for damages under:
The Liability Judgement delivered by the Competition Appeal Tribunal (CAT) on 27th June 2025 confirmed that Visa and Mastercard were liable “by object” in relation to Multilateral Interchange Fees under these provisions.
This means the fees were found to be designed in a way that restricted competition and, as such, the harmful effects to the market are presumed without needing to prove the actual impact. The CAT also held that these infringements were capable of causing merchants to suffer loss, forming the basis for claims to recover the overcharges.
Since it has already been proven that Visa and Mastercard broke the rules, we can now focus on showing exactly how much you have lost — and working to get you the maximum compensation possible, whether through a court decision or a faster settlement.
The overcharge on Visa and Mastercard Interchange Fees directly increased the cost to businesses every time they accepted these cards from their customers.
How the quantum of your claim will be worked out:
This work will be carried out by Punter Southall Analytics Limited, working alongside KP Law’s legal team to ensure accuracy and maximise your potential recovery.
Through our Exclusive partnership with KP Law, one of the UK’s leading specialist collective redress firms, we combine legal excellence with a personalised client service to give your claim the best chance of success.
KP Law:
Our role at Claims.com:
We act as your first point of contact, providing you with a dedicated account manager who understands your business and will guide you through every stage. We handle your onboarding, gather the necessary information, and ensure you’re fully prepared before your case is passed to KP Law’s legal team.
Your claim will be overseen by three senior legal partners:
Our aim is simple: to secure the maximum possible compensation for your business with minimal disruption to your day-to-day operations.
Through our combined expertise at Claims.com and KP Law, you’ll receive:
We take care of the heavy lifting, so you can focus on running your business and we can focus on winning your claim.
Speak to one of our account managers to confirm your business meets the core criteria. We’ll answer your questions, explain the process, and send you KP Law's retainer.
Once you sign KP Law's retainer and KYC documents, we'll introduce you to experts at Punter Southall Analytics who will take you through the information they need to calculate your claim and help you to request Mastercard and Visa card sales data from your Merchant Service Provider(s).
Our quantum experts calculate your overcharge and interest, and KP Law’s legal team prepares your claim. You’ll receive regular updates whilst KP Law push for the strongest possible outcome – whether through settlement or court judgement.
Financial Advantages
Legal Strength
Newsworthy Cases
KP Law is currently pursuing the largest claim in the Competition Appeal Tribunal – a £25bn case against Google’s parent company, Alphabet – alongside other major collective redress actions
Track record in Group Litigation
Claims.com has been the data and lead-generation partner for some of the UK’s most complex and successful group actions, including the original Corporate Card Claim in the CAT.
Got questions about this claim? You’re not alone. Here are the answers to the things we’re asked most often – from who qualifies and what you can claim, to how long it takes and what it’ll cost. If you’re still unsure, our team is here to help.
Our processes are designed to keep the upfront time investment (and indeed the time investment throughout the litigation) by you and your business to a minimum. We and our partners make the onboarding process as smooth as possible for you. We have done this many times. Punter Southall Analytics will guide you to provide or obtain the relevant data required to quantify your claim. Once the data is collated, they will calculate the quantum of your claim and prepare a court ready report on your behalf.
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