Card Account Updater

A card account updater is a service run by a card network that passes updated card details from issuers to merchants that keep cards on file. When a card is reissued with a new number or expiry date, replaced after loss or fraud, or closed, the issuer reports the change, and merchants or their payment providers can retrieve it before charging the customer again. The aim is to prevent failed recurring payments and card-on-file transactions caused by outdated details. Mastercard's version is known as the automatic billing updater. The service is often called simply a card updater.

The main services are Visa Account Updater, Mastercard Automatic Billing Updater, American Express Cardrefresher and Discover's account updater. They are used mostly by subscription businesses, utilities, marketplaces and other merchants with stored credentials. Account updaters predate, and now sit alongside, network tokenization, which updates credentials automatically in a different way.

Imagine a magazine that posts your copy to your home every month. If you move house and nobody tells the magazine, the next copy goes to the wrong address and you stop receiving it. A forwarding service that tells every subscriber list your new address solves the problem.

A card account updater is a forwarding service for card details. When your bank sends you a new card, the updater tells the merchants you have agreed can charge you, so your streaming service or gym membership keeps working without you having to type in the new number.

1. Issuer reporting. The card issuer sends the network a file or message listing changes: new account numbers, new expiry dates, closed accounts, or a "contact cardholder" flag when no automatic update is allowed.
2. Merchant inquiry. The merchant, its gateway or its acquirer submits the stored cards it plans to charge, either in a regular batch file or in real time just before a transaction.
3. Response. The network returns any matching updates, and the merchant replaces the old details in its vault.
4. Charge. The merchant charges the updated card as a merchant-initiated transaction under the existing agreement with the customer.

Some processors offer an automatic version in which updates are applied without the merchant sending inquiries, and some networks push updates directly to enrolled merchants.

Timing matters. A subscription business that bills on the first of each month typically sends its inquiry file several days earlier, so that updates are in place before the billing run. Merchants that charge irregularly, such as ride-hailing or marketplace platforms, tend to prefer real-time inquiries made at the moment of payment. Either way, the merchant must store the update securely, keep a record of when and why a card was changed, and make sure the updated card is shown correctly to the customer, for example by displaying the new last four digits in account settings so that the customer recognises the charge.

• Fewer declines. Transactions with expired or replaced card numbers would otherwise fail, often as a hard decline that cannot be retried.
• Lower involuntary churn. Subscription businesses lose fewer customers who never intended to cancel.
• Less customer effort. Customers do not have to update many merchants each time a card is replaced.
• Better fraud handling. A "closed account" response tells the merchant not to keep trying a card that will never work.

Network tokens solve the same problem differently. A merchant that stores a network token instead of the card number does not need to ask for updates, because the network keeps the token linked to the customer's current card as part of token lifecycle management. Tokens also carry security benefits, since a stolen token is restricted to its merchant. Many merchants use both: tokens where available, and the updater for cards not yet tokenised or for issuers that do not support tokens. Linking a card's history across replacements can also use the payment account reference.

Coverage depends on issuer participation, which varies by country, and some issuers report only some changes. A customer who switches to a card from a different bank is not covered, since the new card has no link to the old one. Services usually charge per inquiry or per update, and network rules require merchants to use the updater only for customers with an active stored-credential agreement, described under recurring billing agreement. Merchants must also handle "contact cardholder" responses correctly and avoid charging cards that customers have deliberately closed, which could otherwise lead to complaints and chargebacks.

• Visa
• Mastercard