How to dispute a charge on your card: the step-by-step order that works

Disputes work — card networks resolve millions of them in cardholders' favour every year — but they work best in a specific order, with specific evidence, inside specific time limits. Filed wrong, a dispute drags for months or fails on a technicality. Here's the order that wins.

Step 0: make sure it's actually disputable

Most "unknown" charges are legitimate ones wearing a confusing descriptor — identify the charge first. Disputable situations: you never authorised it (fraud); charged twice; wrong amount; goods or services never received; a subscription billed after cancellation; a promised credit never processed. Not disputable: buyer's remorse, forgetting to cancel before renewal (try the merchant — many refund anyway), or family members using your card with your knowledge.

Step 1: the merchant, in writing

Banks expect a merchant attempt first, and networks ask about it in the dispute flow. Email support with the transaction details and the problem; keep it factual, ask for a specific remedy, and save the thread. For subscription-after-cancellation cases, attach your cancellation confirmation — this is where a dated written cancellation earns its keep. Give a reasonable window (5–10 business days) unless it's clear fraud — for fraud, skip straight to the bank.

Step 2: know your deadline

• US credit cards — the Fair Credit Billing Act protects billing-error disputes raised within 60 days of the statement containing the error; network rules for fraud often allow longer.
• US debit cards — Regulation E protection is tiered by how fast you report: notify within 2 business days of learning of the problem for the smallest liability cap; waiting past 60 days after the statement can mean unlimited liability. Debit disputes are always more urgent than credit ones.
• UK/EU — chargeback windows are typically 120 days from the transaction (or from when you expected delivery); UK credit purchases over £100 may also have Section 75 rights against the card issuer directly.

Exact rules vary by country and network — the pattern that holds everywhere: report fast, in writing, through the bank's official dispute channel.

Step 3: file with evidence, not emotion

Use the bank's dispute flow (app, secure message, or a letter) and state: the transaction (date, amount, descriptor exactly as printed), the dispute category in their vocabulary (unauthorised / duplicate / not received / credit not processed), what you did with the merchant, and the remedy you want. Attach: the statement line, receipts or order confirmations, merchant correspondence, cancellation proof, delivery/tracking evidence. Our chargeback letter generator structures all of this into a bank-ready letter.

What happens after you file

For credit cards you can typically withhold payment on the disputed amount (keep paying the rest). Many banks issue a provisional credit while investigating. The merchant gets a window to respond with their own evidence; the bank (and sometimes the network) then decides. Timelines run from days (clear fraud) to a couple of months (contested cases). If the merchant wins and you disagree, ask about second presentment / arbitration options — and if the bank mishandles the process, escalate to your financial ombudsman or regulator.

For fraud: one more step

If the charge was truly unauthorised, the card number is compromised — ask for a replacement card, not just a reversal, and scan the rest of the statement for small "test" charges that often precede bigger fraud. Uploading the statement makes this scan fast: card-testing patterns and other anomalies are flagged automatically, with every merchant identified so you can clear the legitimate lines quickly.