If you don’t pay the full amount owing on your BAS by the due date, the ATO will charge you interest on any unpaid amounts. This can add up pretty quickly and you end up losing more money out of your pocket than necessary.

Planning ahead and putting money aside is going to be the best way to ensure you can make the payments on time. This means routinely putting a portion of your income aside to cover the GST (this is often a rough estimate of say 5-7% of your income), as well as putting aside any PAYG Withholding amounts being processed via payroll.