Yes. If you're registered for GST (which is required to drive with Okly), you must lodge a Business Activity Statement (BAS) with the Australian Taxation Office (ATO).
Most drivers lodge quarterly, reporting the GST you've collected on your fares and claiming GST credits on your business expenses.
Your Okly tax statements provide the GST information you need to complete your BAS. The ATO will notify you of your lodgement schedule and due dates.