GST instalments

About paying instalments

If you choose to pay GST by instalments, we work out an amount for you to pay based on:

• the net GST amounts you most recently reported (generally for the last income year) depending on how long you have been registered for GST
• a gross domestic product (GDP) adjustment.

We print this amount on your activity statement.

If you think that using this amount will mean you pay more or less than the GST liability you expect for the year, you can vary it. However, if you pay the instalment amount we print on your activity statement, we will not penalise you, even if your GST liability for the year turns out to be more than the total instalments you paid for that year.

To work out your GST amounts, use GST calculation worksheet for BAS (NAT 4203).