The closing balance on your statement or Online Services is the amount of the total amount owing on your account as at the time your statement was printed.
Similarly, Pay Off Quotes are what the amount of your total owing balance as at a specified date in the future. Any changes to your account made between your statement date and the Pay Off Quote expiry date will cause a difference in these amounts.
Payments, interest charges, fees and refunds all affect the amount of your balance. If any of these have been applied to your account since your last statement was issued the Pay Off Quote will differ from the balance.