XBert Type: Standard
Accounting Software: Xero, MYOB, QuickBooks Online
Country Restriction: Australia only
Risk Type: Tax Risk
Business Function: Sales
Overview
The "GST on Invoice and/or Credit Note when Not Registered" XBert checks whether your business has charged GST on a sale at a time when it was not registered for GST. Charging GST when you are not registered is a tax compliance problem: the amount collected does not belong to you, and it can lead to incorrect BAS lodgements, customer refunds and ATO penalties. This XBert helps you catch those documents early so you can fix them.
What it does
This XBert scans the sales invoices and credit notes you have issued and looks at the GST amount on each one. It then compares the date of each document against the periods during which your business was actually registered for GST, based on your ABN. If a document includes GST but its date sits outside every registered period, the document is flagged for review.
How it works
XBert looks up your business by its ABN in the Australian Business Register (ABR) and reads the official record of when your GST registration started and, if applicable, when it ended. It then checks each sales invoice and credit note that carries a GST amount and compares the document date with those registered periods.
An alert is raised only when a document with GST is dated outside any registered GST period — for example, before your registration officially began, or after it was cancelled. XBert judges this against the date of the actual invoice or credit note, so a sale made while you were registered is treated correctly even if your registration later ends.
To keep the results accurate and relevant, this XBert deliberately ignores:
Invoices and credit notes that fall within a registered GST period.
Documents that carry no GST.
Draft, voided or deleted documents — only approved (authorised) and paid documents are reviewed.
Older documents dated before 1 July 2022.
If your ABN has no GST registration history on record at all, the XBert still reviews your documents, because charging GST with no registration on file is exactly the kind of issue it is designed to surface.
Example/Use Case
Priya runs a small design studio and applies for GST registration ahead of a busy quarter. Assuming registration is just a formality, she starts adding GST to her invoices straight away. One invoice to a client for $4,400 includes $400 of GST — but it is dated two weeks before her registration actually took effect. XBert flags the invoice because it carries GST outside her registered period. Priya checks the ABR, confirms the registration start date, and reissues the invoice without GST, refunding the $400 her client was wrongly charged. Her next BAS is now accurate, and she avoids a correction later.
Accounting software
This XBert runs on the Australian-supported accounting platforms, including Xero, MYOB and QuickBooks Online.
Which countries it supports
Australia only. It relies on your ABN and the Australian Business Register, so it does not apply to businesses in other countries.
Processes
This alert falls under the Sales (AR) business area and supports your BAS and GST compliance accuracy. To resolve a flagged document:
Open the invoice or credit note flagged by XBert and confirm the GST amount and the document date.
Check your GST registration dates on the Australian Business Register (ABR) to confirm whether you were registered on that date.
If GST was charged before your registration began, or after it was cancelled, correct the document. For an unpaid document, void or reissue it without GST. For a paid document, issue a credit note or refund the GST amount to your customer.
Review your GST settings in your accounting software so they match your current registration status and the same error does not happen again.
If you are unsure about your registration dates or the correct treatment, check with your accountant or bookkeeper.
Once the document has been corrected, mark the XBert as resolved.