Tools to help you save see how much you can save with our savings calculator set up regular transfers to keep you on track or create a savings goal in the commbank app with goal tracker 2 and make regular automated transfers from your everyday account. There s no minimum balance to open this account. Cba netbank saver the interest rate of return is applicable to the netbank saver cba product and has no bank fees but may be linked to your cba transaction account with access to commonwealth bank netbank service.