In most cases, no. Like its name implies, you should always treat Cash App like cash. Once you send someone a private P2P payment using CashApp, that transaction is instant and binding – just like handing someone a dollar bill. If you accidentally send too much money or send the payment to the wrong $Cashtag, you can request that the recipient send you back the correct amount of money. If you happen to know your Cash App recipient, this shouldn’t be an issue. Note: Some commercial online merchants and service providers who accept Cash App payments directly will give their customers a “Cancel” option on select purchases.