Why this check matters
If a supplier quotes you a price with GST included, you are entitled to know whether they are actually registered for GST. A business that is not registered cannot charge you GST, and a tax invoice from an unregistered business is not a valid claim for GST credits if you are registered yourself. Checking takes about a minute and is free.
The practical point: GST registration is a public fact, not a private one. The Australian Business Register (ABR) publishes it, and ABN Lookup is the free public search tool for that data. You do not need the other business's permission, an account, or a reason.
What ABN Lookup can and cannot tell you
The ABR describes ABN Lookup as giving free access to public Australian Business Number information from the Australian Business Register. Using it, you can:
- check whether an ABN is active or cancelled
- see the business type and GST status
- confirm the name and details the business has recorded
The ABR also lists "the public — to check a business before buying" as one of the intended uses, which is exactly what this check is.
What it will not do:
- It will not tell you whether the business is compliant, solvent or reputable.
- It will not tell you whether a quote is fair, or whether a payment is safe.
- It will not confirm that the entity quoting you is the same entity holding the ABN. Name-matching is your job, particularly where a trading name differs from a legal entity name.
- It shows a point-in-time status. A business can register later, or cancel later.
How to check a business's GST status
- Get the ABN. Ask the business for its ABN. It should appear on its tax invoices, quotes, website footer or email signature. If a business refuses to provide an ABN, treat that as a meaningful signal.
- Go to ABN Lookup at abr.business.gov.au. It is a free public service; no login is required.
- Search by ABN where you have it. Searching by name works, but it is less precise — names overlap, and a business may trade under a name that is not its registered one.
- Open the correct record and read the GST status field.
- Cross-check the identity. Confirm the entity name, location and business type line up with who you are dealing with. If you are dealing with "Smith Electrical Pty Ltd" but the record shows a sole trader in a different state, stop and clarify.
- Screenshot or note the result with the date you checked it, especially if the transaction is significant or you may need to substantiate a GST credit later.
Reading the result
The GST status in the ABR record is the core answer, but interpret it as a status, not a character reference.
| What you see | What it means in practice |
|---|---|
| GST status shows registered, ABN active | The business is registered for GST. GST on a taxable supply is a real obligation for them, and a compliant tax invoice should support your GST credit if you are registered. |
| ABN active, no GST registration shown | The business is not registered for GST. It should not be adding 10% GST to your invoice. Ask them to requote without GST. |
| ABN cancelled | The ABN is no longer current. Do not transact on the basis of that record; ask for current details. |
| No record found | Either the details are wrong, or the entity is not on the register. Ask the business to confirm, and consider whether you want to proceed at all. |
One nuance worth knowing: a business can hold an ABN without being registered for GST. Having an ABN is not evidence of GST registration — they are separate registrations.
When a business is required to register
This is the part that trips people up, because the obligation sits with the other business, not with you. The ATO states that not every business or enterprise needs to be registered for GST, but that penalties may apply if a business fails to register when it is required to do so.
From the ATO's guidance, the shape of the rules is:
- Registration is compulsory once the business reaches the GST turnover threshold — the ATO refers to businesses checking each month whether they have reached the threshold or are likely to exceed it. The ATO's page is the place to confirm the current threshold figure, as it can change; we are not quoting a number here.
- Some enterprises must register regardless of turnover, including certain taxi and ride-sourcing arrangements according to the ATO's guidance. Check the ATO's "when to register" list rather than assuming turnover is the only trigger.
- Non-residents may need to register depending on their business activities in Australia.
- Registration covers all your businesses. The ATO notes you only need to register for GST once, even if you operate more than one business.
- Where registration is not required, it is optional. If a business chooses to register, it generally must stay registered for at least 12 months.
- Once registered, the business must lodge a business activity statement (BAS).
If you are a registered business claiming GST credits, the practical safeguard is simple: the ATO's own position is that a valid tax invoice is required, so check the status, check the invoice, and keep both.
If you suspect the status is wrong
Do not argue about registration status with the supplier. Approach it in this order:
- Ask them to confirm their ABN and GST status in writing. Mistakes happen — a business can be registered but have stale ABR details, or new software can print an old template.
- Ask for a corrected tax invoice if the GST amount is inconsistent with the register.
- Keep your own record of what you checked and when, plus the invoice you received.
- Escalate only if it matters financially — for example, where you have claimed a GST credit and the invoice turns out to be invalid. In that situation, the ATO is the appropriate source of guidance on correcting your BAS, not the supplier.
There is no public "report this business" button on ABN Lookup for a GST dispute, and no mechanism there to force a business to update its record. ABN details are updated through the ABR by the business itself; the ABR separately advises businesses to keep their ABN details up to date, noting that accurate details help government agencies confirm identity and check eligibility for grants and emergency support.
Questions to verify yourself
Because figures and rules change, treat the following as things to check at the source rather than take from this article:
- The current GST turnover threshold. Confirm it on the ATO's "Registering for GST" page.
- Whether the specific industry you are dealing with is one of the categories that must register regardless of turnover. The ATO publishes that list.
- The GST treatment of your particular purchase. Some supplies are GST-free or input-taxed, which affects whether GST should appear at all, independent of the supplier's registration.
- Whether the entity quoting you matches the ABN record, including for subcontractors and marketplace sellers.
- The date and time of your check, if you are relying on it for a GST credit.
Next steps
- Ask every new supplier for their ABN before you pay a deposit.
- Run the ABN through ABN Lookup and note the GST status, business type and the date checked.
- Compare that against the invoice. If GST is charged but the business is not registered, request a corrected invoice.
- Re-check before large or repeat transactions — status changes.
If you are comparing how different lenders treat self-employed or business income, our /money/home-loans/ hub and the /match/ tool may be useful starting points.
General information only
This article is general information about publicly available ABR data and the ATO's published GST registration rules. It is not legal, tax, accounting or financial advice, and it is not a substitute for checking the ATO or ABR directly or speaking to a registered tax agent about your circumstances. GST registration status can change after publication, and the ATO is the authoritative source for current thresholds, categories and obligations.