You choose the backup payment method just before you finalize/send your payment.

1. Log in to your PayPal account.
2. Click Send Money.
3. Enter the required information.
4. Click Continue.
5. In the Payment Method section, click Change.
6. Choose the backup payment method you would like to use from the drop-down menu.
7. Click Continue.
8. Review the information and click Send Money to complete your transaction.

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