To help you manage your money, we've made it easy for you to keep up-to-date with your Cashplus prepaid Gold Mastercard ® card Account balance. To check your card balance or recent activity, enter the card number and 6-digit security code shown on your card. The card number is a digit number found. What's Your Balance? Add Multiple Cards. Check all your card balances and transactions with ease - no need to type in the card number every time. Enter your digit account number when prompted. If you have enough money in your account to pay for what you want to buy, or an iDraft credit line in place to cover the bill, funds will be available to enable your purchase to be processed. MasterCard is a registered trademark of MasterCard International. CSC must be 3 or 4 digits. You can the worlds hardestgame your balance anytime. How to Check a Debit Card Balance.