What is Account updater?
Also: ABU/VAU, Automatic Billing Updater, VAU, ABU
A scheme service that automatically updates stored card numbers and expiry dates when an issuer reissues a card.
Account updater is a service offered by major card schemes that enables merchants to proactively maintain the accuracy of stored card details, also known as credentials-on-file.
When a card issuer provides a customer with a new card because the old one has expired, been lost, or was stolen, the Account updater service automatically provides the merchant with the new card number and expiry date.
This process is essential for businesses that rely on recurring billing, subscriptions, or card-on-file transactions, as it prevents payment failures caused by outdated credentials.
The mechanism typically operates in batch mode. A merchant, or their Payment Service Provider, submits a file containing their stored card details to the acquirer.
The acquirer then routes these to the respective card schemes, such as Visa for its Visa Account Updater (VAU) service or Mastercard for its Automatic Billing Updater (ABU). The schemes query the issuers, who respond with any updated credentials.
These updates are then passed back to the merchant to refresh their vault. A common misconception is that this service is universally effective; however, its success depends on the participation of the card issuer, which is high but not 100%.
This makes it a powerful but incomplete solution for preventing all credential-related declines.
Worked example
A European fitness app has 50,000 subscribers paying €19.99 monthly. To minimise churn, they use an Account updater service.
On the 15th of each month, they compile a file of all stored Visa and Mastercard credentials scheduled for billing in the next cycle. This file is submitted to their acquirer.
Over the next three to five business days, the acquirer's system communicates with Visa's VAU and Mastercard's ABU services. The process identifies 1,200 cards that have been updated by their issuers.
Of these, 900 have new expiry dates, and 300 have entirely new card numbers. The acquirer charges the merchant a fee of €0.20 per update, resulting in a total cost of €240 (1,200 * €0.20).
On the 1st of the following month, the app successfully bills these 1,200 customers, preventing an estimated €23,988 in failed payments and significantly reducing Involuntary churn.
Scheme notes
The primary services are Visa Account Updater (VAU) and Mastercard Automatic Billing Updater (ABU). American Express offers a similar service called Cardrefresher, and Discover provides one as well.
While the batch-based file submission is most common, Visa also offers a 'Real-Time VAU' which can check for an update at the moment of authorisation, providing an instant response for a single card.
Scheme response codes are standardised, indicating if an account has been updated, if there is no change, or if the account has been closed and should no longer be billed.
It is crucial to note that issuer participation is voluntary for all schemes, meaning there will always be a portion of cards in a portfolio that cannot be updated through this service.
Why it matters for merchants
The commercial impact of using Account updater services is overwhelmingly positive for subscription and recurring revenue merchants. It directly reduces Involuntary churn, a critical health metric for these business models, by preventing payment declines due to expired or replaced cards.
This not only protects revenue but also enhances customer lifetime value and reduces the operational burden on support teams who would otherwise have to contact customers to update their details manually.
While acquirers charge a small fee per update (e. g. , £0.10 - £0.25), the return on investment from recovered revenue is typically very high. Cardflo's vaulting and tokenisation solutions can manage the Account updater process seamlessly across a merchant's various payment providers.
Frequently asked
How does Account updater differ from network tokenisation?
Account updater services typically provide the actual updated PAN and expiry date to be stored in a merchant's vault.
In contrast, network tokenisation replaces the PAN with a unique token that remains valid even when the underlying card details change, often removing the need for a separate update request.
Is participation in Account updater programmes mandatory for merchants?
Participation is generally optional but highly recommended for merchants with recurring revenue models to prevent payment failures. However, specific scheme rules may require large digital goods merchants to support automated updates to maintain high authorisation hygiene standards.
How often should I run the Account updater service?
The best practice for most subscription businesses is to run the Account updater service monthly. A common schedule is to submit the batch file about 10-15 days before your primary billing date.
This provides enough time to receive the updates from the schemes (which can take 3-7 days) and update your payment-processing system before initiating the billing cycle. Running it more frequently, such as weekly, offers minimal benefits and may increase costs unnecessarily.
What is the typical success rate for Account updater services?
Success rates vary depending on the card portfolio's geographic mix and the specific issuers involved. In mature markets like North America and Europe, you can expect VAU and ABU to provide updates for 70-90% of eligible cards.
This means if 10% of your cards expire or are replaced in a given period, the service might successfully update 7-9% of them automatically. The remaining cards will still fail and require a traditional Dunning process.
Is Account updater the same as network tokenisation?
No, they are different but solve similar problems. Account updater is a service that updates stored PANs (Primary Account Numbers).
Network tokenisation replaces the PAN with a secure token that does not expire and is automatically kept in sync with the underlying card by the card scheme.
Network tokens are a more modern and comprehensive solution, as they also offer security benefits and potentially higher approval rates. Many merchants are transitioning towards network tokens, but Account updater remains a valuable tool, especially for legacy systems.
What happens if an issuer does not participate in Account updater?
If an issuer does not participate in VAU or ABU, the service will return a response indicating no update is available.
When the card eventually expires or is replaced, the Recurring payment will fail with a corresponding decline code (e. g. , 'Expired Card' or 'Invalid Card Number').
In this scenario, the merchant must rely on their reactive Dunning process, which involves notifying the customer and asking them to manually provide their new card details.
Are there specific merchant categories that benefit most from Account updater?
While any business with card-on-file credentials benefits, the service is most critical for businesses with long customer lifetimes and recurring billing models. This includes SaaS businesses, subscription boxes, streaming services, and membership sites.
For these merchants, customer relationships can span multiple years, making it highly probable that a card will expire or be replaced during the subscription period. Proactively managing these updates is essential for revenue stability.
See how Account updater plays out in practice
Industries and regions where this term drives real acquiring, routing, or dispute decisions.
Related terms
A scheme-issued token that replaces the PAN end-to-end and is automatically updated when the underlying card is reissued.
A PCI DSS compliant store of tokenised card credentials that lets a merchant charge a card again without holding the PAN.
The process of retrying failed subscription payments and notifying customers to update their card before churning them.
A transaction initiated by the cardholder in real time, typically the first charge that establishes credential-on-file.
Related guides.
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