XBert Type: Standard
Accounting Software: Xero, MYOB, QuickBooks Online
Country Restriction: Australia only
Risk Type: Tax Risk
Business Function: Purchases
Overview
The "Bill raised with supplier not registered for GST" XBert alerts you when a bill includes GST, but the supplier was not registered for GST on the date of the bill according to the Australian Business Register (ABR). Claiming GST credits from a supplier who was not registered to charge GST can lead to ATO adjustments and penalties, so this XBert helps you catch the issue before it reaches your BAS.
What it does
This XBert scans your bills and compares each supplier's GST registration history on the ABR against the date of the bill. It looks for bills where:
The bill is in Draft, Submitted or Authorised status
The bill includes a GST (tax) amount greater than $0
The supplier is matched by their ABN to a real business on the ABR
That ABN was not registered for GST on the date of the bill
When all of these are true, the XBert is raised so you can confirm the GST before paying the bill or claiming a credit.
How it works
XBert looks up the supplier's full GST registration history on the ABR, not just their current status. It then checks whether the supplier held an active GST registration on the exact date of the bill.
The XBert is raised only when the supplier had a recorded GST history but was outside every active registration period on the bill date — in other words, they were genuinely not registered to charge GST at that time.
To avoid false alarms, the XBert deliberately ignores some cases. It does not fire when:
The supplier was registered for GST on the bill date, even if they have since cancelled their registration. A bill dated while they were correctly registered is treated as valid.
The supplier has no ABN matched to a business on the ABR, so their GST status cannot be confirmed.
The matched ABN has no GST registration history on record, so XBert cannot reliably say they were unregistered.
This date-based check means the XBert focuses on bills where GST was charged during a period the supplier was not actually registered, which is the situation that creates a real BAS risk.
Example/Use Case
Priya, a bookkeeper, enters a $2,200 bill from "ClearView Landscaping" that includes $200 of GST. XBert checks ClearView's ABN on the ABR and finds that, on the date of this bill, ClearView was not registered for GST. If Priya were to pay the bill and claim the $200 GST credit on the BAS, the business could later have to repay that amount to the ATO — and the cost adds up quickly if it happens across many bills. Because XBert flags it early, Priya contacts ClearView, confirms they should not have charged GST, requests a corrected invoice, and updates the bill to GST-free before lodging the BAS.
Accounting software
This XBert runs on the major Australian accounting platforms, including Xero, MYOB and QuickBooks Online.
Which countries it supports
Australia only.
Processes
This XBert falls under the Purchases (AP) area and helps protect your business from incorrect GST claims. To resolve it:
Check the supplier's GST registration for the relevant period using the ABN Lookup website. Confirm whether they were registered for GST on the date of the bill.
If the supplier was not registered for GST at that time:
Request a corrected invoice that excludes GST.
Update the bill in your accounting system with the correct tax treatment (for example, GST-free).
Make sure the GST is not claimed on your BAS for that bill.
If the supplier was registered for GST on the bill date, confirm their ABN and registration details are recorded correctly against the contact so the GST claim is supported.
Once the bill has been corrected or confirmed, mark the XBert as resolved.