Chargeback

Chargebacks are among the most damaging financial risks in merchant payment operations. Understanding the mechanics — why they happen, how they flow through the system, and how to fight them — is essential for any merchant processing significant card volume.

How a Chargeback Works

1. Cardholder contacts their issuer to dispute a transaction.
2. Issuer provisionally credits the cardholder’s account and submits a chargeback to the acquirer.
3. Acquirer debits the merchant’s account for the disputed amount plus a chargeback fee.
4. Merchant has a limited window (typically 20–45 days) to submit a representment — compelling evidence that the transaction was valid.
5. Issuer reviews the representment and either accepts (chargeback reversed) or maintains the chargeback.
6. If the merchant loses, the funds are permanently forfeited.

Chargeback Reason Codes

Chargebacks are filed under reason codes defined by the card networks. Major categories include:

• Fraud (e.g., Visa 10.4 “Other Fraud — Card Absent”): The cardholder claims the transaction was unauthorized.
• Authorization (e.g., Visa 11.3): The transaction was processed without a valid authorization.
• Processing errors (e.g., Visa 12.5): Duplicate processing, incorrect amount.
• Consumer disputes (e.g., Visa 13.1, “Merchandise/Services Not Received”): Cardholder claims goods were not delivered.

Chargeback Thresholds and Consequences

Card networks monitor merchant chargeback ratios monthly. Exceeding thresholds triggers monitoring programs with escalating penalties:

• Visa Dispute Monitoring Program (VDMP): Triggered at 0.65% chargeback ratio or 75+ chargebacks/month. Fines begin at $50/chargeback above threshold after 4 months.
• Mastercard Excessive Chargeback Program (ECP): Triggered at 1.5% chargeback ratio. Fines up to $200/chargeback.

PSP contracts typically set internal thresholds below these network limits, often at 0.5–0.75%, giving the PSP the right to terminate accounts before card network penalties apply.

Friendly Fraud

A significant portion of chargebacks in e-commerce — estimates range from 40% to 80% — are “friendly fraud”: chargebacks filed by cardholders who received the goods or services but dispute the transaction anyway. This may be intentional (deliberate theft) or unintentional (cardholder didn’t recognize the merchant name, forgot the purchase, or expected a refund and didn’t wait).

Friendly fraud is particularly prevalent in digital goods, subscription services, and high-value fashion and electronics. Combating it requires a robust representment process and proactive measures including clear merchant name display, purchase confirmation emails, and documented delivery evidence.