A card account updater (CAU) is a service offered by Card networks to help businesses maintain up-to-date credit and Debit card information. When a Customer’s payment information changes because a Card expires or is replaced, the CAU automatically updates the Card details in the business’s system. CAUs help reduce payment disruptions because of outdated Card information and are especially helpful for businesses that operate with Recurring payments or subscriptions.
Below, we'll cover what businesses need to know about using this service: how CAUs work, their potential challenges and how they fit into overall payment systems.
What's in this article?
- How do card account updaters work?
- Pros and cons of using card account updaters
- What businesses should use a card account updater?
- How to implement a card account updater
- How to enrol in card account updater through Stripe
- How Stripe Billing can help
How do card account updaters work?
CAUs are used when a business has outdated Customer Card information, which can occur because of expired cards, Card reissues, Account closures, or Card upgrades. The key feature of a CAU service is it requires no involvement of the Customer or the business to acquire new Card details. Instead, it relies on the credit Card network, Payment processor or vault provider, and issuing bank. Given the transmission of sensitive financial information involved in this service, the Process is governed by strict security and Compliance protocols such as the Payment Card Industry Data Security Standard (PCI DSS). These protocols are necessary to protect Cardholder data.
CAUs are offered by most Card networks, and though they all function in similar ways, there are specific systems and procedures unique to each company’s service. For example, Visa’s Account Updater CAU and Mastercard’s Automatic Billing Updater CAU use different methodologies for updating Card information: Mastercard uses a pushmodel, while Visa supports both push and pull models. American Express supports only the push model. Both Visa and Mastercard also support Real Time CAU in which a stale Card is updated during the Transaction processing.
The general process for how CAUs operate is outlined below.
A business initiates a Request: When a business identifies the need to update a Customer’s credit Card information, it makes a Request to its Payment processor. Some payments providers, such as Stripe, allow businesses to opt in at the user level so all their eligible vaulted cards are opted in and updated automatically.
The Processor or vault provider forwards the Request: The Payment processor or vault provider acts as an intermediary and forwards this Request to the appropriate credit Card network. The specific details that must be included in these requests will vary depending on the network, and the Payment processor or vault provider is responsible for ensuring forwarded requests are in the appropriate format and include all required information.
Data is securely transmitted to the Payment processor or vault provider: The Card network passes the refreshed information back to the Payment processor or vault provider via secure, encrypted channels to ensure the sensitive financial data remains protected.
Business records and databases are synced: The Payment processor or vault provider automatically updates the business’s records and internal databases with the accurate Card details. The business is then notified of the successful update, allowing future transactions to proceed without interruption.
Pros and cons of using card account updaters
Card account updaters are important for businesses, particularly those depending on Recurring payments such as Subscription-based services or installment plans. The central feature of CAUs is preventing Transaction failures because of outdated Card information, providing a steady Revenue stream for businesses and uninterrupted service for the business’s customers.
Cards go through constant lifecycle events—expirations, reissuances because of loss or theft, Account closures, and upgrades—and a system for tracking these events, such as a CAU, is necessary for businesses that need prolonged access to accurate Card information.
|
Category |
Pros |
Cons |
|---|---|---|
|
Revenue and retention |
Reduces involuntary churn: Prevents the roughly 50% of Subscription churn caused by failed payments. Postmates, for example, saw a 1.72% uplift, resulting in US$60 million in annual Revenue. |
Service costs: Implementation typically involves Subscription fees and potential per-Transaction fees that impact margins. |
|
Customer experience |
Ensures continuous service: Provides a "frictionless" Billing experience where customers never experience a service cutoff due to an Expired card they forgot to update. |
Coverage and timing gaps: Updates are often batch-processed, not real-time (Stripe provides real-time updates). A Card reissued close to a Billing date may not propagate before the Charge attempt. Issuer participation also varies by bank and region, leaving meaningful gaps in coverage. |
|
Operational efficiency |
Eliminates manual administration: Automates the resource-intensive task of tracking Card lifecycle events, freeing staff from manual data entry and outreach. |
Token lifecycle complexity: Businesses using network tokenisation alongside CAU must often manage two overlapping but distinct systems with separate lifecycles and update rules. Misalignment between them can create gaps, duplicate updates, or integration bugs. |
|
Security and Compliance |
Strengthens data protection: Reduces breach risks by handling sensitive data through secure, PCI-compliant channels rather than manual staff intervention to reduce fraud. |
Cardholder opt-out risk: Cardholders can opt out of network updater programs through their issuing bank at any time, creating silent coverage gaps with no merchant notification. Conversely, customers who cancel a subscription but not their card may receive unexpected charges when updated credentials are passed to the merchant, increasing disputes. |
|
Scalability and insights |
Supports global growth: Scales effortlessly with Transaction volume and provides data on spending habits and churn patterns for personalized marketing. |
Incomplete Decline coverage: CAU only addresses credential-related failures (expired or reissued Card numbers). Declines from insufficient Funds, Issuer Fraud blocks, or exceeded limits still require separate retry logic and Customer outreach—meaning CAU alone won't eliminate involuntary churn. |
What businesses should use a card account updater?
CAUs are an important tool for any organization that maintains long-term Customer relationships. If your Business model relies on keeping payment credentials on file for future use, you should implement an automated updater to maintain continuity. Here are some examples of businesses that should use one:
Subscription and SaaS platforms: Maintain recurring Revenue streams by automatically refreshing cards before monthly or annual Billing cycles.
Non-profits and charitable organizations: Protect recurring donation programs from passive churn, ensuring that supporter contributions continue uninterrupted.
e-commerce retailers with one-click Checkout: Improve conversion rates for returning customers by ensuring their stored Payment methods are always accurate and ready for use.
Membership-based services: Avoid service disruptions for gyms, clubs, or professional associations by updating credentials immediately after a Card is reissued or expires.
Utility and telecommunications providers: Streamline monthly Billing for essential services and reduce the administrative cost of manual collections or outreach.
How to implement a card account updater
Visa, Mastercard, American Express, and Discover each have their version of card account updater services.
American Express and Discover tend to have more direct routes to enrol in their CAU services, while Visa and Mastercard require enrolling through their Acquirer, Issuer, or Payment processor to confirm system compatibility with their services.
There are multiple benefits to enrolling in a CAU service through a Payment processor. payments providers like Stripe offer built-in account updater services alongside streamlined Integration and maintenance. Providers also typically support updates across multiple credit Card networks, offering a comprehensive solution that covers a broad Customer base.
How to enrol in card account updater through Stripe
The process to enrol in CAU services through Stripe is outlined below as an example of what to expect.
Contact Stripe to define service scope: Stripe automatically enables CAU for any stored Card with a Customer attached. Contact Stripe if you’re interested in other ways of obtaining CAU services, such as during real-time raw pan transactions. Stripe will provide detailed information about its account updater services and how to enrol in them, discussing specific business needs and how Stripe’s CAU service can meet them.
Audit security and Compliance protocols: Businesses should discuss all security measures to protect sensitive customer data during the updater process. Stripe’s services are compliant with PCI DSS, for example, and businesses should verify this and understand how it aligns with their Compliance requirements before moving forward.
Execute the API or low-code Integration: Depending on your technical resources, choose between Stripe’s API-based Integration or low-code solutions. While API Integration may require engineering work to establish a robust connection, some scenarios may also support file-based data exchanges. Select the method that best fits your existing infrastructure.
Validate Functionality through Scenario testing: Conduct thorough end-to-end testing to confirm the Integration is performing as expected. Test multiple real-world scenarios—including Card expirations, loss or theft reissues, and Account changes—to ensure the system accurately updates credentials without manual intervention.
Educate your team on CAU operations: Provide training to all relevant team members to ensure they understand how CAU impacts the Billing lifecycle. Your team should be prepared to handle Customer inquiries regarding automated updates and understand how these “behind-the-scenes” changes improve the overall User experience.
track performance metrics via the Dashboard: Regularly monitor the success of the service within the Stripe Dashboard. Look for specific improvements in your financial health, such as a decrease in declined transactions and an increase in successful payment Authorisation rates. If performance does not meet your expectations, use these insights to implement further customizations.
Further information on Stripe's CAU service, called 'automatic card updates', is outlined below.
Real-time, automatic updates: Customers who have stored their Card details with a business using Stripe will automatically have their information updated when they get a new Card without needing to reenter their details. Stripe has recently launched real-time updates, available for Visa in the United Kingdom and Europe and for Mastercard globally, with plans to expand to American Express updates in additional countries. This feature is particularly useful in situations in which Card details are changed at the moment of the Transaction.
Support for various Card networks: The service supports most US-issued cards from major networks such as American Express, Visa, Mastercard, and Discover. International support for automatic Card updates can vary depending on the country and the Issuer’s participation with the network.
Billing and Subscription management: Stripe’s CAU is integrated with its Billing and Subscription management services, making it a comprehensive solution for businesses that require regular and Recurring payments processes.
Service costs: Stripe’s pricing policy includes a 25¢ Charge for each Card update for businesses using custom services.
How Stripe Billing can help
Stripe Billing lets you bill and manage customers however you want – from simple recurring billing to usage-based billing and sales-negotiated contracts. Start accepting recurring payments globally in minutes – no code required – or build a custom integration using the API.
Stripe Billing can help you:
Offer flexible pricing: Respond to user demand faster with flexible pricing models, including usage-based, tiered, flat-fee plus overage and more. Support for coupons, free trials, prorations and add-ons is built-in.
Expand globally: Increase conversion by offering customers' preferred payment methods. Stripe supports 125+ local payment methods and 130+ currencies.
Increase revenue and reduce churn: Improve revenue capture and reduce involuntary churn with Smart Retries and recovery workflow automations. Stripe recovery tools helped users recover over US$8.2 billion in revenue in 2025.
Boost efficiency: Use Stripe's modular tax, revenue reporting and data tools to consolidate multiple revenue systems into one. Easily integrate with third-party software.
Learn more about Stripe Billing or get started today.
The content in this article is for general information and education purposes only and should not be construed as legal or tax advice. Stripe does not warrant or guarantee the accuracy, completeness, adequacy, or currency of the information in the article. You should seek the advice of a competent lawyer or accountant licensed to practise in your jurisdiction for advice on your particular situation.