The PIN for changing the Cash App PIN is the same as the PIN used to withdraw cash at an ATM using the Cash App cards. Therefore, if you are wondering how to do so, then you've come to the right place. The Cash App PIN for withdrawing cash is the same as the Cash App PIN on the Cash App Card and the Cash App Account. The same PIN you use to validate a transaction must also be used when you withdraw money from an ATM. Cash app support can help you if you have any problems with your account. Read MOre also : cash app bank name