Ammend BAS after lodging

Yes, you can amend your BAS after lodging it. Run your updated BAS report in QuickBooks Online (QBO) to get the corrected figures, then submit the formal amendment directly through ATO Online Services. Since QBO locks the period once a BAS is officially submitted, the amendment itself is processed on the ATO's end.


Here's how to get your corrected figures from QBO:

1. Go to All apps in the left menu, then select GST.
2. Locate the relevant BAS period under the Reports or Historical tab.
3. Review and note your corrected PAYG instalment amount.
4. Log in to ATO Online Services or consult your tax/BAS agent to submit the formal amendment using those updated figures.

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