A second payment method?
I have two credit cards entered as a payment method, but everything is deducted from the same card. I would like to pay my iCloud account with the other card. How do I?
iPhone 12 Pro
You can have a credit card / debit card on file and an Apple Account balance.
Your default payment method will be used first by Apple when you need to make a payment.
If you have set your Apple Account balance as your default payment method and you have a CC / debit card, you pay from your default payment method.
If you have 2 CC, and you have set one CC as your default payment method that will be charge by Apple.