Funds Withdrawn Without Warning: A UK Supplier's Playbook for Card Chargebacks

A card payment feels final. The terminal approves, the funds appear, the invoice is marked paid, and the order is closed. Weeks later, the money leaves the account again under a short reference and a reason code. For a UK supplier, the instinct is to telephone the customer and demand an explanation. That is rarely the most effective first move.

A chargeback is not a court claim and it is not the customer suing. It is a card scheme process. The customer's bank, known as the issuer, raises the dispute with the supplier's bank, the acquirer, and the acquirer takes the funds back while the matter is investigated. The supplier is then invited to prove that the transaction was legitimate and that the goods or services were supplied as agreed. The timetable is short, the paperwork is prescribed, and the decision is made by people who were not present when the deal was struck.

What a chargeback is — and what it is not

It helps to separate three ideas that are often confused. A chargeback is a scheme mechanism governed by the rules of Visa, Mastercard and other card networks. A Section 75 claim is a statutory route against a credit card issuer for certain purchases over £100, where the issuer may be jointly liable with the supplier. A county court claim is a legal action between the parties. They can overlap, but they are not interchangeable, and a response to one is not automatically a response to another.

For most business-to-business suppliers, the practical question is narrower: what does the acquirer need in order to reverse the reversal? That is called representment. The supplier submits a response pack, the issuer reviews it, and the scheme decides whether the chargeback stands. If the supplier loses, the money remains with the customer. If the supplier wins, the funds are returned, though fees may still have been incurred.

The clock starts before you notice

The chargeback lifecycle usually begins quietly. A customer may first raise a 'retrieval request', asking the supplier's bank for transaction information. That is an early warning, not a chargeback, and it is easily missed if notifications go to an unmonitored inbox. The formal chargeback follows, often with a deadline of around seven to fourteen days for a response, depending on the scheme and reason code.

Reason codes matter. Common categories include 'product not received', 'not as described', 'duplicate processing' and 'fraudulent transaction'. Each requires a different answer. A delivery dispute is not rebutted by a signed contract alone; it needs proof that the item arrived or that the customer collected it. A fraud allegation is not answered by a friendly email; it needs evidence linking the transaction to the cardholder or to an authorised representative.

There is also a pre-arbitration stage. If the issuer rejects the supplier's representment, the acquirer may offer a further review, sometimes at additional cost. Suppliers should weigh that cost against the sum in dispute. Spending £300 in fees to recover £120 is rarely sensible, but letting a £4,000 chargeback go unchallenged can encourage repetition.

Building an evidence pack that answers the question asked

A common mistake is to send everything. Acquirers and issuers work through files quickly. A chronological, indexed pack is far more persuasive than a hundred pages of unrelated correspondence.

Start with the transaction itself: the order confirmation, the invoice, the payment record, and any evidence that the card details were validated, such as address verification or 3-D Secure results. Then show the terms in force at the time of purchase, with the date and version identified. Next, provide performance evidence. For goods, that means tracking records, proof of delivery, a signature or photograph, or collection records. For services, it means timesheets, attendance logs, milestone sign-offs, or emails in which the customer acknowledged progress.

Communication is the connective tissue. A short covering note should set out the timeline, identify the reason code, and point to the specific document that answers it. If the customer complained, show how the complaint was handled. If a refund was offered, show the terms on which it was offered. If the customer refused to engage, say so and evidence it.

One warning: never simply re-charge the card without authorisation. That can breach scheme rules and turn a defensible dispute into a compliance problem.

Terms that help — and terms that do not

Contract terms cannot override the scheme rules, but they shape the evidence. Clear product descriptions, staged payment terms, cancellation rights and refund policies all reduce ambiguity. So does a proper audit trail showing that the customer accepted those terms before payment. A tick box on a website is weak if it is not logged; a signed order form is stronger; a signed form that refers to the relevant terms is stronger still.

Terms that bury cancellation rights, or that purport to exclude rights the customer has under consumer law, tend to invite disputes rather than resolve them. Where the customer is a consumer, the Consumer Rights Act 2015 and the Consumer Contracts Regulations 2013 remain relevant, and a chargeback may be only one part of the picture. Where the customer is a business, the starting point is the contract, but card scheme rules still apply to the transaction.

When to stop arguing and start recovering

If the evidence is strong and the customer has simply changed their mind, the chargeback may be the opening of a wider debt dispute. A letter before action, followed by a claim through the county court or Money Claim Online, can be appropriate. For undisputed commercial debts, a statutory demand is sometimes considered, but it should be used cautiously and only on sound advice. A disputed debt is not a suitable candidate.

If the transaction appears to be genuine fraud, report it to Action Fraud and inform the acquirer promptly. If the customer has made a false statement to obtain a reversal, that may be a matter for the police, though practical outcomes vary. Suppliers should keep contemporaneous notes of every conversation and avoid accusatory language until the facts are clear.

Practical hygiene for 2026

Chargebacks are rising because they are easy to initiate and because customers increasingly treat their bank as the first port of call. The defence is unglamorous: accurate order records, visible terms, reliable delivery evidence, and a monitored disputes inbox. A supplier who can produce a tidy pack within forty-eight hours is in a far stronger position than one who spends the first week searching for a signed delivery note.

None of this guarantees success. Scheme decisions can be inconsistent, and some customers will exploit that. But a disciplined response turns a chargeback from an unexplained loss into a documented commercial dispute — and that is the foundation for recovery, negotiation or, where necessary, a claim.