iCloud storage plan
How do I change the billing credit card do the monthly fee for iCloud storage
iPhone 12 Pro, iOS 17
Question marked as
If you need to change or update your Apple ID payment method
(Also includes Mac, PC)
Here is how you update your payment method on an iPhone or iPad:
1. Open the Settings app.
2. Tap your name.
3. Tap Payment & Shipping (formerly Media & Purchases). You might be asked to sign in with your Apple ID.
4. Tap Add Payment Method, enter the new payment method, then tap Done.
5. Tap Edit.
6. Tap the red delete button next to the old payment method, then tap Delete.
For more information see this article about updating payment methods on various platforms (iPhone, Mac, etc.): If you need to change or update your Apple ID payment method - Apple Support
Also note: "If you change your address, the credit or debit card information that you use with your Apple ID might be automatically updated by your financial institution, and you don't need to take action. But if there's an issue [such as you having a subscription or being a Family Sharing Organizer], add a new card first, then remove the old card."
That will change it on anything being billed to your account.