You can add or remove payment methods linked to your Coinbase account at any time. However, a payment method must be added to your account in order to buy, sell, add cash, or cash out.
To manage your payment methods:
Sign in to your Coinbase.com account.
Select then choose Settings.
Select the Payment methods tab.
Complete one or both of the following actions:
Add: Select Add a payment method and complete the steps listed.
Remove: Select Remove and choose Confirm the remove the payment method.
To manage your payment methods:
Access the Coinbase mobile app.
Select then choose Profile & Settings.
Complete one or both of the following actions:
Add: Select Add a payment method and complete the steps listed.
Remove: Select the payment method then choose Remove.
Related article(s):