By Jimmy Carter | Platinum Payment Processing
You completed the work or delivered the order. Then a notice arrives: the customer has disputed the card payment.
Before sending a refund or gathering every document you have, find out exactly what is being challenged and when your response is due. A clear, organized response starts with the specific claim.
This guide explains the first steps a business should take when a card-payment dispute arrives.
1. Confirm the notice and record the deadline
Open your processor’s usual account portal directly, or contact support through a number you already trust. Locate the transaction and confirm:
- The case number, transaction date and disputed amount.
- The customer’s stated reason for the dispute.
- Whether this is an information request or a formal chargeback.
- The response deadline and required submission method.
Assign one person to manage the case and set an internal reminder before the deadline.
Follow the deadline in your actual notice. Do not assume a general timeline found online applies to your account. Visa recommends responding promptly through your acquiring bank or processor. Visa’s dispute guidance.
2. Understand what the customer is claiming
A dispute may concern an unrecognized charge, an incorrect amount, an unauthorized payment or goods or services the customer says were not provided.
Your response needs to address that particular issue. Showing that a payment occurred does not, by itself, explain whether the customer received what was promised.
Review the transaction, invoice, customer communications and any previous refund before deciding what to do. Mastercard specifically advises merchants to match their evidence to the dispute’s reason code—the category explaining why the payment is being challenged. Mastercard’s merchant guidance.
3. Decide whether to accept or challenge it
If your records show that the customer’s claim is valid, ask your processor how to accept or resolve the dispute through its designated process.
If your records contradict the claim, consider whether you have relevant evidence to support a challenge. Weigh the disputed amount, available documentation, staff time and any applicable fees. Contesting every case automatically is not a substitute for reviewing the facts.
Before issuing a separate refund, confirm the case status and instructions with your processor. Ask whether funds have already been withheld or returned and how to avoid crediting the customer twice. If a refund was already processed, provide its transaction reference and date.
Acceptance and challenge procedures vary by provider. Use the process attached to your case. Example of a processor’s dispute workflow.
4. Gather evidence that answers the claim
Start with the documents requested by your processor. Depending on the dispute, useful records may include:
| Customer’s claim | Records to review with your processor |
|---|---|
| Goods or services were not received | Delivery confirmation, dated completion records and customer acknowledgment |
| The work or item differed from what was agreed | Accepted estimate, product description, work order and relevant communications |
| A cancellation or refund was not honored | The policy disclosed at purchase, cancellation request and refund records |
| The amount was incorrect or duplicated | Itemized invoices and records identifying each separate payment |
These are examples, not a universal evidence checklist. For an unauthorized-payment claim, ask your processor which transaction and authentication records are relevant.
Keep the explanation factual, concise and easy to follow. Include dates and explain what each attachment demonstrates. Preserve original records; do not create or backdate an authorization after a dispute arrives. Processor guidance on supporting documents.
5. Submit securely—and confirm submission
Use the processor’s designated dispute portal or approved secure channel. Follow its file-format, size and document requirements.
Check that attachments are readable and complete. Do not assume the reviewer will open outside links, watch a video or contact you for missing information. Some systems restrict changes after the response is submitted. Dispute-submission guidance.
Save the submission confirmation, case number and a copy of what you provided. Uploading a file and completing the final submission may be separate steps.
Keep sensitive payment information out of ordinary email and social messages. The PCI Security Standards Council advises merchants to prevent further exposure when cardholder data arrives through an insecure channel. PCI SSC guidance.
6. Keep tracking the case, even if the customer says it is canceled
A calm conversation may help clarify a misunderstanding. Keep a record of any discussion and share relevant updates through your processor’s process.
However, a customer saying “I canceled it” is not the same as a confirmed case closure. Continue meeting the response requirements unless your processor confirms otherwise. For example, Square instructs merchants to submit evidence even when a customer intends to withdraw a dispute. Guidance on canceled disputes.
After a decision, check the actual account adjustment. Confirm the disputed amount, any returned funds and applicable fees. Do not assume every fee is refunded when a case is resolved in your favor.
Platinum’s Guide to Matching Transfers and Sales can help you trace adjustments through your reports and bank deposits.
Make the next dispute easier to handle
Review what the case revealed about your everyday process. Were the invoice and business name recognizable? Were cancellation terms clear? Could staff find proof of delivery or completed work?
Visa recommends clear policies, recognizable transaction information, careful transaction processing and communication about delivery delays. These practices can help reduce preventable disputes. Visa’s prevention recommendations.
Keep a simple case log with the deadline, assigned person, submitted evidence, outcome and any process improvement.
Review the payment setup behind the paperwork
Ask your current provider who sends dispute alerts, where records are stored and how your team gets help responding.
To review your broader processing costs and payment workflow, request Platinum’s free merchant analysis. If you already have an open dispute, respond through the processor handling that transaction before its stated deadline.
