Chargebacks Explained: How Disputes Work and How to Respond

A chargeback happens when a cardholder disputes a card payment with the bank that issued their card, and that bank takes the money back from the merchant through the card network. The merchant can accept the loss or respond with evidence, and the issuing bank decides the outcome. A merchant's control sits mostly in two places: preventing disputes, and sending the right evidence quickly when one arrives.

Key takeaways

The card network sets the rules; the cardholder's bank, the merchant's processor and the merchant each play a part.
The disputed amount is usually debited from the merchant when the chargeback is filed and held until the case is decided.
Every chargeback carries a reason code, and that code tells you which evidence matters.
Response windows are short and vary by network. A missed deadline usually means a lost case.
Clear billing descriptors, visible refund terms and fast customer service prevent many disputes.

Who is involved in a chargeback?

Cardholder: the customer who made, or says they did not make, the purchase.
Issuer: the bank or card company that issued the customer's card. It receives the complaint and decides most disputes.
Card network: Visa, Mastercard, American Express or Discover. The network writes the dispute rules, including reason codes and deadlines.
Acquirer or processor: the bank or payment company that handles card payments for the merchant. It passes the chargeback on and submits the merchant's response.
Merchant: the business that took the payment.

For US credit cards, the customer's right to dispute also has a legal basis. The Fair Credit Billing Act (opens in a new tab), carried out in Regulation Z section 1026.13 (opens in a new tab), defines billing errors to include unauthorized charges and goods or services not delivered or accepted as agreed. Card network rules add their own dispute rights, and those rules drive the chargeback process merchants see.

How does a dispute move from customer to merchant?

The common pattern looks like this. Each network uses its own terms, and some add stages.

The cardholder contacts the issuer. Under federal rules, a credit card customer sends a written billing error notice within 60 days after the first statement showing the charge, and the issuer must acknowledge it within 30 days, according to the CFPB (opens in a new tab). Network rules often allow longer: Stripe's dispute documentation (opens in a new tab) says networks typically allow 120 days from the payment, with more time in some cases, such as tickets for a future event.
An inquiry may come first. American Express and Discover most often send a request for information before a formal chargeback; Visa and Mastercard no longer use this step, per the same documentation. A good answer can end the case before money moves.
The issuer files the chargeback. The disputed amount, often plus a dispute fee, is debited from the merchant and held while the case is open.
The merchant responds or accepts. Challenging a chargeback with evidence is called representment. The merchant's window is usually 7 to 21 days, depending on the network, according to Stripe.
The issuer decides. Issuers usually take 60 to 75 days to review evidence, and the whole process often runs two to three months, per Stripe (opens in a new tab). A win returns the funds. Some networks allow a further arbitration stage, but not every processor supports it; Stripe, for example, does not.

The timeframes above are as of September 2026. Network rules change, so confirm the deadline on each case with your processor.

What do reason codes tell you?

Every chargeback arrives with a reason code stating the cardholder's claim. The issuer judges your response against that claim, so proof of delivery helps against "not received" but does little against "not as described."

Visa numbers its codes by type, and the code names in Stripe's reason code reference (opens in a new tab) fall into four groups, summarized below in plain language. Other networks use different numbers for similar claims.

Visa code group	What it covers	Examples	Evidence that tends to matter
10.x	Fraud: the cardholder says they did not make the purchase	10.4 Other Fraud, Card Absent Environment	Verified billing address, device or login history tying the order to the cardholder
11.x	Authorization problems	11.2 Declined Authorization, 11.3 No Authorization	Records showing an approval for the amount charged
12.x	Processing errors	12.5 Incorrect Amount, 12.6.1 Duplicate Processing	Receipts showing the correct amount, or proof two charges were separate purchases
13.x	Disputes about the purchase itself	13.1 Merchandise/Services Not Received, 13.2 Canceled Recurring	Delivery tracking, terms shown at checkout, cancellation records, customer messages

What evidence should a merchant send?

A strong response answers the reason code directly. Typical items:

The order record: date, amount, items, and billing and shipping addresses.
Authorization results, including address verification and card security code checks.
Carrier tracking showing delivery to the order address, or a signature for high-value items.
For digital goods, login, download or usage records tied to the customer's account.
Refund, cancellation or renewal terms exactly as the customer saw them before paying.
Emails, chat logs or call notes with the customer.
A short cover note stating the claim, your answer and where the evidence supports it.

Friendly fraud, also called first-party misuse, is when the real cardholder disputes a purchase they made or authorized. For card-not-present sales (online, phone or mail orders where the card is not physically shown), Visa changed its rules to give merchants more ways to show such a purchase was valid, per a September 2023 Visa announcement (opens in a new tab). Ask your processor which data qualifies under current rules.

Accepting is sometimes the better choice, such as when the customer has a fair point. Stripe (opens in a new tab), for example, does not let a merchant refund a charge outside the dispute process while the dispute is open; ask your processor how it handles this.

Example (illustrative numbers)

A shop sells a $180 jacket online. Five weeks later it receives a Visa 13.1 chargeback, Merchandise/Services Not Received, and $180 plus a dispute fee is debited. The shop gathers carrier tracking showing delivery to the shipping address, which matches the billing address that passed address verification, adds the order confirmation email and a two-sentence cover note, and submits before its processor's deadline. If the issuer accepts the evidence, the $180 comes back. Whether the fee is returned depends on the processor's terms.

How can a business reduce disputes?

Some disputes start because the customer does not recognize the charge or missed the terms.

Use a recognizable billing descriptor. The name on the statement should match the business or website the customer knows; Stripe's category guidance (opens in a new tab) lists this as a way to prevent "unrecognized" disputes.
Show terms before payment. Put refund, cancellation and renewal terms at checkout and on the receipt.
Be easy to reach, and refund quickly when you agree. A refund before a chargeback avoids the fee and the case.
Handle subscriptions carefully. Send renewal reminders and honor cancellations promptly; see recurring billing and declines.
Verify card-not-present orders. Address verification, security codes and authentication (steps such as 3-D Secure, where the issuer confirms the buyer's identity) give you evidence if a fraud claim arrives. See fraud prevention and chargeback mitigation for the tools involved.

Networks also monitor each merchant's chargebacks relative to sales; that is covered in what a chargeback ratio is and how to keep it under control.

Frequently asked questions

Is a chargeback the same as a refund?

No. A refund is issued by the merchant by choice. A chargeback is started by the cardholder's bank, reverses the payment without the merchant's agreement and usually adds a fee.

How long can a customer wait before filing a dispute?

It depends on the network, reason code and type of purchase. Networks typically allow 120 days from the payment, with longer windows in some cases, according to Stripe's documentation (opens in a new tab) (as of September 2026).

Where do the official dispute rules live?

In each network's published rules, which your acquirer applies. For cardholders' legal rights, see the FTC's guide to disputing charges (opens in a new tab) and Regulation Z. For a specific case, ask your processor or a qualified advisor.