Navigating the Chargeback Calendar: Essential Timeframes in the Dispute Process

A chargeback calendar is the set of fixed deadlines, set by Visa, Mastercard, American Express, and Discover, that govern how long a cardholder has to dispute a charge and how long a merchant has to respond at each stage of the case. Miss a window and you lose the case by default, regardless of how strong your evidence is.

Every dispute moves through the same basic clock: a cardholder files within their network's filing window, the issuer sends your acquirer a case with a reason code, you have a fixed number of days to respond with evidence (representment), and if the issuer disagrees with your response, the case can escalate to pre-arbitration and then arbitration. Each stage has its own deadline, and the deadlines differ by network. For what happens inside the bank at each of those stages, see how banks process a dispute internally.

What a Chargeback Calendar Actually Tracks

If you're unfamiliar with the basics, a chargeback is a forced reversal of a payment, initiated by the cardholder's bank rather than the merchant. The calendar exists because that reversal process has multiple checkpoints, and each one carries a deadline:

• Filing window: how long after the transaction date a cardholder can open a dispute.
• Notification lag: the time between the cardholder filing and your acquirer actually notifying you, which eats into your response window before you even see the case.
• Merchant response window (representment): how many days you have to submit compelling evidence once notified.
• Pre-arbitration / second presentment: the window for the issuing bank to escalate if it disagrees with your evidence, and for you to respond again.
• Arbitration: the final network-level review, available on some networks and not others, with its own short filing deadline.

Chargeback Deadlines by Card Network

The table below lays out the four stages that matter most to merchants: how long cardholders get to file, how long you get to respond, and how the escalation stages work on each network. Treat these as the general rule; the exact count can shift by a few days depending on the specific reason code, so confirm the live deadline on the case notice from your acquirer or payment service provider before you build your response timeline.

A few things worth noting from that table: Amex is a closed-loop network, meaning it acts as its own issuer and acquirer, which is why there's no separate pre-arbitration or arbitration process the way there is on Visa and Mastercard. Visa and Mastercard both use a 10-day arbitration filing window once pre-arbitration closes, which is easy to miss if you're not tracking the calendar actively.

Why the Clock Matters More Than the Evidence

The total cost of fraud, including chargebacks, now runs to roughly $5.13 for every $1 of direct loss for US retail and ecommerce merchants, according to LexisNexis Risk Solutions' 2026 True Cost of Fraud study. That multiplier includes the fees, operational time, and lost merchandise that stack on top of the disputed amount itself, and none of it is recoverable once a deadline passes.

The scale of the problem keeps growing. Worldwide card payment fraud losses hit $33.83 billion in 2023, and the Nilson Report projects a cumulative $403.88 billion in global card fraud losses between 2025 and 2034. A meaningful share of that volume is friendly fraud, disputes filed by a cardholder who did in fact authorize the purchase. Juniper Research puts friendly fraud at 22% of chargebacks globally in 2026, worth about $8.1 billion, rising to 28% and nearly $16 billion by 2031. Those cases are winnable with the right evidence, but only inside the response window.

Staying Ahead of the Notification Lag

The single biggest threat to your response window isn't the deadline itself, it's the delay before you find out a case exists. Acquirers batch notifications, and by the time a case reaches your inbox, several days of your response window may already be gone. Chargeback alerts close that gap by flagging a dispute at the moment the issuer files it, sometimes before the formal chargeback is even generated, giving you extra days to pull order records, shipping confirmations, and customer communication before you have to submit anything.

A practical calendar-tracking approach for merchants looks like this:

1. Log the transaction date and the network for every order that could plausibly be disputed, particularly high-ticket or subscription purchases.
2. Set an internal deadline several days earlier than the network's stated response window, to leave room for mail delays or acquirer processing time.
3. Assign one owner per case so a dispute doesn't sit unanswered while it's forwarded between support, finance, and operations.
4. Track pre-arbitration and arbitration dates separately, since these windows are shorter and easier to miss than the initial response.

Where Deadlines Get More Complicated

Two shifts are compressing these timelines further. First, subscription and recurring-billing disputes often carry different reason codes with their own filing windows, so a single merchant can be tracking several calendars at once depending on product line. Second, the rise of AI-driven checkout agents is starting to change who initiates a purchase and who can meaningfully respond to a dispute about it. If your store accepts agent-initiated orders, it's worth understanding how liability for AI agent transactions is currently assigned and reviewing the evidence playbook for agentic commerce disputes, since the standard proof points (IP address, device fingerprint, login history) don't map cleanly onto a transaction an agent placed on a shopper's behalf.

None of this changes the deadlines themselves, but it does change how quickly you need to assemble evidence once a case lands, which is exactly what a working chargeback calendar is for.

Frequently Asked Questions

What is a chargeback calendar?

A chargeback calendar is the sequence of deadlines that apply to a disputed transaction: how long a cardholder has to file, how long the merchant has to respond with evidence, and how long each side has to escalate the case to pre-arbitration or arbitration. The exact number of days depends on the card network.

How many days does a cardholder have to dispute a charge?

Visa, Mastercard, American Express, and Discover all generally allow up to 120 days from the transaction date for a cardholder to file a dispute, though some fraud-related reason codes carry a shorter window and a small number of reason codes allow longer.

How long do merchants have to respond to a chargeback?

The response window depends on the network: 30 days for Visa, 45 days for Mastercard, 20 days for American Express, and roughly 20 to 45 days for Discover depending on the reason code. The clock starts when your acquirer notifies you, not when the cardholder originally filed.

What happens if a merchant misses the response deadline?

Missing the deadline means the dispute is decided by default in the cardholder's favor. There is no evidence review at that point, the chargeback simply stands and the funds stay reversed, regardless of whether the underlying claim was valid.

What is the difference between representment, pre-arbitration, and arbitration?

Representment is the merchant's first response, submitting evidence to counter the cardholder's claim. Pre-arbitration happens when the issuer reviews that evidence and still disagrees, giving the acquirer a further window to respond before the case escalates. Arbitration is the final network-level ruling, available on Visa and Mastercard, and carries fees for whichever side loses.

Do chargeback deadlines change based on the reason code?

Yes. Networks assign different filing and response windows to specific reason codes, for example, cases involving undelivered goods from a now-closed merchant can carry a much longer cardholder filing window than a standard fraud claim. Always check the reason code on the case notice rather than assuming a single default deadline applies.