Google Wallet and Google Play are wonderful services, and they're very convenient when you want to make a quick movie rental or order a new album. However, as easy as it is to put your payment information into an account to authorize a purchase, taking it back out isn't exactly difficult, but you do have to know where to look for it. Maybe you just wanted to buy your kid some Google Play credit and forgot it'll save your information. Maybe you just decided to buy your friend an app yourself since they don't quite understand the concept of buying apps yet. Whatever the case, you want your payment information back before they get into trouble with it.
Here's how to do it.
You probably entered your account information in Google Play — more specifically a Google Wallet popup in Google Play — but in order to remove it, you have to delve into Google Wallet's main app or site. If doing this in the app, you'll need the Google Wallet PIN for the account and if you're doing this online you'll need the Google Account password, so make sure to keep the account holder nearby if you're pulling your info out of your kid/partner/friend's account.
Once you're in, you'll go to Payment methods if you're on the site or Cards & accounts in the app. You'll be presented with a list of all your accounts. In the website, you can remove an account directly on this page, whereas in the app you'll have to open the payment profile and then click the three-dot options in the top right corner, which will reveal the option to remove the card/account.
Removing credit cards, bank accounts and Paypal accounts all follow the same procedure in Google Wallet. Tap remove, then confirm that you do indeed want to remove your account information.
Once finished, you'll return to your payment list, a little shorter than before. That's all there is to it, just remember that removing a payment method can lead to cancellations for any subscriptions that are tied to it like Google Play Music All Access, and removing a payment method won't refund any purchases your little ruffian was able to make before you remembered you left them your card.