How do banks investigate a card dispute? The process, step by step

A bank investigates a card dispute in two stages. First it reviews the cardholder’s claim on its own: is the charge eligible, is it still within the time limit, which dispute condition applies. If it accepts the claim, it raises a chargeback through the card network and the merchant’s payment provider, the merchant can send evidence, and the bank (the card issuer) reviews that evidence before deciding. For card payments, the whole cycle usually takes two to three months.

This guide follows a dispute from the cardholder’s call to the final decision, then explains what it means for a subscription business. For the deadlines alone, see chargeback time limits.

Primary sources: the Visa Core Rules and Visa Product and Service Rules (edition of 24 October 2026, chapter 11), Visa’s Dispute Management Guide for Merchants (October 2026), Adyen (dispute process and flow, dispute timeframes), Stripe (how disputes work), and the CFPB: Regulation Z § 1026.13, Regulation E § 1005.11 and its guide to disputing a credit card charge. All accessed 13 November 2026. This is general information, not legal advice.

Who is involved in a card dispute?

Party	Role
Cardholder	Reports the problem to their bank
Issuer	The cardholder’s bank: investigates, raises the chargeback and decides
Card network	Visa, Mastercard, American Express, Discover: sets the rules and deadlines, and runs arbitration
Acquirer	The merchant’s bank, often reached through a provider such as Stripe, Adyen or Braintree
Merchant	Receives the chargeback and can respond with evidence

The merchant never deals with the cardholder’s bank directly. Everything goes through the acquirer and the network.

Step 1: what does the bank check when a customer disputes a charge?

When the cardholder calls or uses the bank’s app, the issuer first decides whether the claim can become a chargeback. It checks, among other things:

• The time limit. Usually 120 days from the payment under Visa’s rules, longer in some cases (see chargeback time limits).
• The dispute condition. Visa groups disputes into four categories: Fraud (10), Authorization (11), Processing Errors (12) and Consumer Disputes (13). Each condition has its own requirements; see the chargeback reason codes.
• Whether the cardholder tried the merchant. Several consumer dispute conditions require the cardholder to have attempted to resolve the issue with the merchant first.
• Credits already issued. Visa’s rules say that if a credit was processed before the dispute, the issuer must apply it to the disputed transaction or explain why it does not resolve the dispute. From 24 April 2027, the issuer must reconcile related credits and debits from the same merchant and dispute only the net amount.

The issuer may also send an inquiry or request for information to the merchant first. Stripe says American Express and Discover use this stage most often, “while Mastercard and Visa no longer use it”. Adyen notes that at this stage “no money is withdrawn from your account”.

Step 2: does the bank credit the customer during the investigation?

Often, and in the US it is sometimes required:

• Credit cards (Regulation Z). The cardholder “need not pay (and the creditor may not try to collect)” the disputed amount while it is investigated, and the bank may not report the account as delinquent because of it. It may report that the amount “is in dispute”.
• Debit cards (Regulation E). The bank has 10 business days to investigate. If it needs longer (up to 45 days, or 90 days for point-of-sale debit card transactions), it must provisionally credit the account within 10 business days.

Outside the US, it depends on the bank and local law. A provisional credit can be reversed if the dispute fails.

Step 3: how does the bank raise the chargeback?

The issuer submits the dispute through the network (for Visa, through Visa Resolve Online). Visa’s rules say an issuer “must dispute each Transaction separately”: three disputed renewals are three chargebacks.

The money moves at this point. Adyen describes the notification of chargeback as the moment that “marks the start of the defense period”, and the chargeback as the stage where “The disputed amount is withdrawn from your account”. Stripe likewise debits the amount plus a dispute fee from your balance when a dispute opens.

At Visa, the next steps depend on the category:

	Fraud and Authorization (categories 10, 11)	Processing Errors and Consumer Disputes (categories 12, 13)
Name used by Adyen	Allocation flow	Collaboration flow
What the acquirer can do	Make a pre-arbitration attempt with evidence	Send a dispute response with evidence
Acquirer’s time limit	30 calendar days from the dispute	30 calendar days from the dispute
Next step if the issuer disagrees	Issuer responds to the pre-arbitration within 30 days	Issuer may make a pre-arbitration attempt within 30 days
Arbitration	Acquirer may file within 10 days	Issuer may file within 10 days

Source: Visa Core Rules, tables 11-2 and 11-3. Those 30 days belong to the acquirer; the window your provider gives you is shorter (for example 7 to 21 days at Stripe).

Step 4: how does the bank review the merchant’s evidence?

The issuer reads what the merchant sent and decides whether it answers the claim. Visa’s merchant guide says issuers “assess whether the information provided clearly supports the validity of the transaction” and that “Effective responses focus on relevance and clarity, not volume.” Evidence works best when it:

• clearly links the transaction to the cardholder;
• shows the cardholder took part in, or benefited from, the transaction;
• confirms it was processed, fulfilled and billed according to the agreed terms.

For fraud disputes, Visa’s Compelling Evidence 3.0 adds a rule. If the merchant provides compelling evidence and the cardholder’s contact details match the issuer’s records, the issuer “must certify they have contacted the Cardholder to review the Compelling Evidence” and explain why the cardholder still disputes. See Visa Compelling Evidence 3.0.

In the US, Regulation Z also requires a “reasonable investigation” before a credit card issuer can deny a billing error claim. For goods or services not delivered, it cannot deny the claim unless it determines they “were actually delivered, mailed, or sent as agreed”. If it finds no error, it must explain why in writing.

Step 5: how does the bank decide, and what comes after?

The issuer either accepts the merchant’s evidence (the chargeback is reversed and the money comes back) or keeps the chargeback. Adyen describes the reversal as the stage where “the disputed amount is transferred back to your account”.

If the issuer disagrees, the case can go to pre-arbitration and then arbitration by the network, which adds fees. Adyen mentions a scheme arbitration fee “of up to USD 600”. Stripe says it does not support the arbitration phase, so on Stripe the issuer’s decision is usually final. See pre-arbitration chargebacks.

How long does a bank dispute take?

Stage	Typical time	Source
US debit card investigation	10 business days, or up to 45 days (90 for point-of-sale debit) with a provisional credit	Regulation E
US credit card billing error	Acknowledged within 30 days, resolved within two billing cycles, at most 90 days	Regulation Z
Merchant’s response	7 to 21 days (Stripe); 9 to 40 days by network (Adyen)	Stripe, Adyen
Issuer decision after the response	60 to 75 days (Stripe); 45 to 80 days by network (Adyen)	Stripe, Adyen
Full card dispute	2 to 3 months	Stripe

The US legal deadlines and the card network process run side by side: the bank can settle with its customer under the law while the chargeback with the merchant is still open.

What does this mean for a subscription business?

• You only see the dispute once the issuer has accepted it. Everything in step 1 happens without you. A clear billing descriptor and an easy cancel path stop many disputes before that point.
• Your evidence is read by a bank, not by the customer. Keep it short and on point: the chargeback evidence checklist lists what to send for subscriptions.
• Answer early inquiries. On Amex and Discover, an unanswered inquiry can become a chargeback that is hard to win.
• Sometimes a refund is the better answer, before or during the dispute; see refund or fight a chargeback and chargeback fees.
• Every dispute counts toward the networks’ monitoring, won or lost; see chargeback ratio monitoring programs and the VAMP calculator.

Provider guides: win chargebacks on Stripe, Braintree disputes, Recurly chargebacks, Mollie chargebacks. If you sell through Paddle, Lemon Squeezy or Polar, the platform is the merchant of record and handles disputes; see Paddle chargebacks.

FAQ

Does the bank actually investigate a dispute?

Yes. The issuer checks that the claim is eligible before raising a chargeback, then reviews the merchant’s evidence. In the US, Regulation Z requires a reasonable investigation before a credit card billing error claim is denied.

Does the bank always side with the customer?

No. The issuer applies the network’s rules: if the merchant shows the charge was valid and the evidence matches the dispute condition, the chargeback can be reversed. Without a response from the merchant, the cardholder usually wins.

Does the bank contact the merchant?

Not directly. The issuer sends the chargeback through the card network to the merchant’s acquirer, which passes it to the merchant through its payment provider. Some issuers send an inquiry first.

Can a bank reverse a dispute after crediting the customer?

Yes. A provisional credit can be taken back if the bank finds no error or the merchant wins. Under US Regulation E, the bank must notify the customer first.

How long does a bank have to investigate a dispute?

In the US, 10 business days for a debit card error, extendable to 45 or 90 days with a provisional credit; for a credit card billing error, two billing cycles and at most 90 days. The card network process with the merchant usually takes 2 to 3 months.

How NoChurn helps

NoChurn helps you answer the part of the investigation you control: the evidence. When a dispute opens on Stripe or Braintree, it gathers the evidence automatically (cancel flow answers, reminders sent, usage you send by API, help desk conversations read only) and drafts a reply with AI that a person on your team reviews before it is sent. On Stripe, early fraud warnings come with a one-click refund. A cancel flow with a one-click cancel always visible gives customers a way out that does not go through their bank.

It connects to Stripe in one click and works with Chargebee, Recurly, Braintree, Paddle, Mollie and others, or with any billing through the API. Pricing depends only on MRR, free up to $300 of MRR and with no commission (a custom sending domain needs a paid plan, from $9). See chargebacks.