If your GST-related business income exceeds or is likely to exceed $75,000, then you are required to report and lodge a quarterly BAS with the Australian Taxation Office (ATO). Your BAS will report your business revenue to the ATO for the quarter, and any Goods & Services Tax (GST) on both your sales and expenses. You will either have a GST refund (if GST-related expenses are more than GST-related sales) or a GST payable (if sales exceed GST-related expenses). Your BAS will also report any employee wages and PAYG withholding tax. The withholding tax will be added to the GST. By lodging your BAS through a registered tax agent such as POP Business, you will get an additional ONE MONTH to make payments which can be great for helping with your business cash flow.