Your Projected Bank Balance is your bank balance for the next 12 months assuming you will pay your Total Payments into your bank account as per the Pay In column and the value of the bills in your account will not change.
If you use your bank account for other payments or if your bills are higher or lower than the value you have included them in your BillsManager account or your don’t lodge the correct amount into your bank account, your Projected Bank Balance will be different to your actual bank balance.