how do i get the correct quarter to prepare my BAS?

Hi, piggottaj,

QuickBooks Online automatically selects the dates for your latest sales tax period based on the ATO's payment schedule. Here's how to update these dates to align with last year’s sales tax period:
 

1. In the GST overview, select Prepare BAS for the current period.
2. Modify the date fields to match the tax period you're filing for.
3. Verify the details and amounts to ensure accuracy.
4. Click Mark as lodged to finalize the return.

After lodging your BAS, you can file your IAS using the same steps. For detailed instructions, you can check out this article: Lodge your BAS or IAS in QuickBooks Online.

Let me know if you need further assistance. We're here to help.