How the Chargeback Dispute Process Works

The Four Parties in a Chargeback

Understanding the chargeback process requires understanding the four parties involved and how they relate to each other. Each has a defined role in the dispute lifecycle.

• Cardholder: The person who holds the card and initiates the dispute by contacting their bank. The cardholder does not interact with the merchant directly during the formal dispute process.
• Issuing bank: The cardholder's bank — the institution that issued the credit or debit card. The issuing bank receives the dispute, makes an initial determination, and issues the chargeback on behalf of the cardholder.
• Card network: Visa, Mastercard, American Express, or Discover. The network sets the rules that govern the dispute process, arbitrates if the parties cannot resolve the dispute between themselves, and enforces monitoring programmes for merchants with high dispute rates.
• Acquiring bank: The merchant's bank — the institution that processes the merchant's card transactions. The acquiring bank receives the chargeback from the network and notifies the merchant, collecting the dispute amount from the merchant's account. It also submits the merchant's representment to the network on the merchant's behalf.

Note: American Express and Discover operate as both card network and issuing bank for most transactions (closed-loop structures), which simplifies the party count but introduces slightly different rules for dispute handling.

Stage 1: Cardholder Files a Dispute

The dispute process begins when a cardholder contacts their issuing bank to dispute a charge. This typically happens via phone, the bank's mobile app, or online portal. The cardholder provides the transaction details and their reason for disputing.

Common dispute reasons include: not recognising the charge, not receiving goods or services, receiving goods that don't match the description, being charged after cancelling, or believing the transaction was fraudulent. The issuing bank categorises the dispute according to the card network's reason code framework.

Some issuers offer Order Insight (Visa/Verifi) or Consumer Clarity (Mastercard/Ethoca) services that allow the bank to show the cardholder transaction details — merchant name, product description, delivery status — before formally filing the dispute. If the cardholder recognises the transaction upon seeing these details, the dispute may be cancelled without ever reaching the merchant. This is the merchant's ideal outcome: no chargeback filed, no fee, no ratio impact.

If the cardholder proceeds, the issuing bank makes an initial assessment. If it appears to be a valid dispute under network rules, the bank provisionally credits the cardholder and initiates the chargeback.

Stage 2: Chargeback Issued and Merchant Notified

Once the issuing bank initiates the chargeback, it flows through the card network to the acquiring bank. The acquiring bank receives the chargeback notification, debits the merchant's account for the disputed transaction amount plus the chargeback fee (typically $20–$100), and notifies the merchant.

This notification — often delivered via email or through the processor's dispute portal (Stripe, Shopify Payments, PayPal, etc.) — triggers the merchant's response clock. The notification date is the date from which the response deadline is calculated.

The chargeback notification includes: the disputed transaction amount, the reason code, the cardholder's last four card digits, the transaction date, and the response deadline. The reason code is the most important piece of information — it determines exactly what evidence is required for a successful response.

At this stage, the merchant has three options: accept the chargeback (do nothing, auto-lose), issue a refund (if not already done, to potentially stop the dispute), or contest the chargeback with a representment.

Stage 3: Merchant Representment

A representment is the merchant's formal challenge to the chargeback. It consists of a rebuttal letter and supporting evidence, submitted to the acquiring bank within the response window. The acquiring bank reviews the submission and forwards it to the card network, which passes it to the issuing bank for review.

Response windows by network:

• Visa: 30 calendar days from chargeback notification
• Mastercard: 45 calendar days from chargeback notification
• American Express: 20 calendar days from notification (shorter than other networks — important to track separately)
• Discover: 30 calendar days from notification

The representment should address the specific reason code. For a "goods not received" dispute: delivery confirmation, tracking records, signature receipt. For "not as described": product listing at time of purchase, order confirmation, photos. For "fraud" (without 3DS): IP address, device fingerprint, AVS match, purchase history.

The rebuttal letter should be factual, concise, and structured around the specific allegation. Card network analysts review high volumes of cases — a clear, labelled submission with explicit connections between evidence and the disputed claim significantly outperforms a dense narrative.

Stage 4: Issuing Bank Reviews the Representment

The issuing bank reviews the merchant's representment. It can take one of two actions: accept the representment (ruling in the merchant's favour) or reject it (filing a second chargeback or pre-arbitration chargeback).

If the issuing bank accepts the representment, the dispute is resolved in the merchant's favour. The funds are returned to the merchant's account. The chargeback still counts in the ratio for the month it was filed, but the merchant recovers the transaction amount.

If the issuing bank rejects the representment and files a second chargeback (Mastercard) or pre-arbitration (Visa), the dispute moves to the next stage. The merchant is notified again and must decide whether to escalate to arbitration or accept the final loss.

The issuing bank's review quality varies. Banks process high volumes of disputes, and reviewers may spend less than two minutes on any single case. Submissions that are clearly organised, concise, and explicitly address the reason code perform better in this environment than detailed but disorganised evidence packages.

Stage 5: Pre-Arbitration or Second Chargeback

On Visa, if the issuing bank rejects the representment, it files a pre-arbitration chargeback — the formal notification that the issuer maintains the cardholder's position. The merchant receives notification and has 30 days to respond.

On Mastercard, the equivalent stage is the arbitration chargeback, where the issuing bank files a second chargeback within 45 days. The merchant's response window is again 45 days.

At this stage, the merchant faces the same decision as in Stage 3: accept the loss or escalate to network arbitration. The decision should weigh the transaction amount, the strength of the remaining evidence, and the cost and risk of arbitration.

For most cases below $200–300, the arbitration filing cost alone ($250–$500) makes escalation economically questionable unless the evidence is extremely strong. For higher-value transactions with compelling evidence, arbitration may be worth pursuing.

Stage 6: Network Arbitration

Arbitration escalates the dispute directly to the card network for a final, binding ruling. Either party can initiate arbitration — though in practice it is typically the merchant who initiates after losing a second-stage review.

The card network reviews all evidence from both parties and issues a final decision. There is no further appeal. The losing party pays the arbitration filing fee ($250–$500 depending on the network) plus, in some cases, an additional penalty.

Arbitration is typically appropriate only for: high-value transactions (above $500–1,000), cases with very strong evidence that was not fully evaluated in earlier stages, or cases where the merchant believes there was a procedural error in the earlier review.

The overall arbitration rate is low — most disputes are resolved at the representment stage. For merchants receiving more than 20–30 disputes per month, maintaining a log of arbitration outcomes helps calibrate which dispute types and evidence combinations succeed at arbitration versus which should be accepted as losses after the first two stages.

Chargeback Alert Services: Preventing the Process from Starting

The most cost-efficient outcome in the dispute process is one that never becomes a formal chargeback. Chargeback alert services — Verifi (Visa) and Ethoca (Mastercard) — notify merchants when a cardholder contacts their bank to dispute a transaction, before the dispute is formally filed.

This creates a window — typically 24–72 hours — to issue a proactive refund. A refund prevents the formal chargeback from entering the network, which means: no chargeback fee, no ratio impact, and no operational overhead of building and submitting a response.

Alert services typically cost $30–40 per prevented chargeback. For merchants where the fully-loaded cost of a chargeback (fee + operational time + ratio impact) exceeds $40, the economics strongly favour using alert services — especially for merchants approaching monitoring thresholds.

Timeline: A Full Dispute from Start to Finish

A typical dispute timeline on Visa, from dispute filing to final resolution:

• Day 0: Cardholder contacts issuing bank and files dispute
• Day 1–5: Issuing bank processes dispute, provisionally credits cardholder, issues chargeback through network
• Day 2–7: Acquiring bank receives chargeback, debits merchant account, notifies merchant — response clock starts
• Day 7–30: Merchant prepares and submits representment (Visa deadline: day 30)
• Day 30–60: Issuing bank reviews representment and decides
• Day 60–90: If rejected: pre-arbitration filed; merchant receives notification; 30-day response window opens
• Day 90–120: Merchant decides to accept or escalate to arbitration
• Day 120–150: Network arbitration reviewed and final decision issued (if escalated)

The full cycle from initial dispute to final resolution can span 3–5 months. For merchants receiving regular disputes, multiple cases at different stages will be in flight simultaneously — making systematic deadline tracking essential.

When to Accept a Chargeback Rather Than Fight

Not every chargeback is worth contesting. The decision to respond should be based on: the transaction amount, the availability of supporting evidence, the reason code and the typical win rate for that code, and the cost of preparing the response.

Chargebacks worth accepting without response include: merchant errors (duplicate charges, incorrect amounts), genuine fraud on transactions without 3DS authentication and without compelling counter-evidence, and very small transaction amounts where the response cost exceeds the potential recovery.

Chargebacks worth contesting include: goods not received disputes where you have delivery confirmation, not-as-described disputes where you have detailed product specifications and photos, subscription disputes where you have documented authorisation and renewal reminders, and any dispute where the evidence clearly contradicts the cardholder's claim.

At scale, tracking win rates by reason code and by merchant error type creates data that systematically improves the accept/contest decision and focuses response investment where it produces the highest returns.