Instead of the account number, you are known by $Cashtag that is a unique identifier on the Cash app. If you receive money, it lands on your Cash app. While creating the account, you will be asked to link the cash app to your existing bank account and use it to transfer money to and from your Cash app account. Likewise, you can also send money from debit and spend it on a Cash app balance. This instant payment app enables users to receive direct deposits to their accounts. You must be at least 18 years old to open an account on the Cash app.