# Payment Failed The _Payment Failed_ event triggers anytime a subscription payment, or payment plan payment fails. This is the most common event to fire. A charge can fail for a variety of reasons, but the most common reason a charge fails is because your customer’s card has insufficient funds, has expired, was lost, or was issued a new card number. Most people will want this event to trigger a series of follow-up emails that they set up to send from their CRM / Marketing Automation tool. Those emails will follow up with their customer to get them to update their card on file. This follow-up sequence is where you will include a link to your _**Customer Portal**_. [Click here to learn more](https://university.spiffy.co/customer-portal/intro-to-customer-portal.md) about how your customers can update their credit card with your _Customer Portal_. **Make Sure to Adjust Your Stripe Settings** If you are using this Billing Automation event, be sure to check your Stripe settings and make sure that the setting for **_Send emails when payments fail_** is turned **OFF** in Stripe. You can also adjust the schedule of the auto-charge attempts, under the _**Use custom retry schedule**_ settings. Logged into your Stripe account? [Click here to view these settings](https://dashboard.stripe.com/account/billing/automatic).