Invalid Expiry Month
What This Means
The expiration month provided is not a valid value (must be 01-12). This is a data entry error that occurs at checkout when a customer enters an impossible month value. SaaS businesses should catch this client-side before it reaches Stripe.
Retrying will likely fail again. The customer needs to update their payment method or contact their bank.
Common Causes
- 1Customer entered a month value outside the 01-12 range
- 2Customer confused the month and year fields and entered them in the wrong order
- 3Form auto-fill populated the field with an incorrect value
Recovery Tactics
- 1Use a dropdown or date picker instead of free-text input for expiration date
- 2Implement client-side validation to catch invalid months before form submission
- 3Use Stripe Elements which handles expiry validation automatically
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FAQ
How can I prevent invalid expiry month errors?
The best approach is to use Stripe Elements or a dropdown selector that only allows valid month values (01-12). This eliminates the possibility of customers entering invalid months.
Does this error appear in recurring billing?
No. This error only occurs when a customer is entering or updating their card details. Recurring charges use stored payment method tokens that already have validated expiry dates.
How healthy is your Stripe account?
Get a free churn health report. Find pending cancellations, failed payments, and expiring cards putting your MRR at risk.
Run Free Audit