To add a debit card to the Cash App take your phone and open Cash App. When the Cash App is loaded, tap on the profile icon in the top right corner. On your account screen you can see many options. Find “Linked Bank accounts” Tap on it. On the Linked bank accounts screen tap on Link Debit Card. On the next screen you have to enter your card number, expiration date, CVV and your ZIP code. After you add your debit card to the Cash App you can add money to your balance. Tap on Add cash Next select the amount you want to transfer. Tap on the green button add. Money should be added to your balance.