What an ABN check tells you before you hire, and what it doesn't
What does checking a tradesperson's ABN actually prove?
Checking an ABN on the Australian Business Register confirms the business is registered, whether that registration is currently active, the entity's legal name and type, and how long it has been registered. It does not prove the business is licensed, insured, solvent, or any good at the work.
The Australian Business Register is free, public, and answers in about ten seconds at abr.business.gov.au. Type in the eleven digits and you get the entity's legal name, its type, whether the ABN is active, and the date that status took effect.
It is the cheapest check available before handing money to a stranger. It is also routinely oversold, so it is worth separating what it genuinely tells you from what people assume it tells you.
What it does tell you
Four things, each of which is worth knowing.
- The ABN exists and is active. A cancelled ABN on a current quote is a real signal, and it is the one this check is best at.
- The legal name behind the trading name. Quotes often come from "Sharp Electrical" while the ABN belongs to a person or a company with an entirely different name. That is normal and not sinister, but it is the name that would appear on any contract, invoice dispute, or claim.
- The entity type. A sole trader and a Pty Ltd company are different propositions if something goes wrong.
- How long it has been registered. A business trading for fifteen years under one ABN is a different risk from one registered three weeks ago. Neither is disqualifying; the second is worth a question.
What it does not tell you
An ABN is a tax registration. Getting one is free, takes a few minutes online, and requires no qualification, no insurance, no experience, and no check on whether you can do the work.
So an active ABN does not mean licensed, does not mean insured, does not mean solvent, and does not mean competent. Treat it as a floor rather than a recommendation: its absence is a warning, its presence is barely a start.
GST registration is a size clue
The register also shows whether the business is registered for GST and from when. Registration is compulsory once turnover passes $75,000 a year, so a business that has been registered for years is turning over at least that.
This is not a quality measure and plenty of excellent sole traders sit below the threshold deliberately. But if someone is quoting you $60,000 for a renovation and has never been registered for GST, those two facts are difficult to hold at the same time, and it is a fair thing to ask about.
How we handle it here
Every listing with an ABN is checked against the Australian Business Register automatically and re-checked monthly, and the profile shows the date of the last check rather than just a tick. A check from eight months ago is not the same claim as a check from Tuesday, and showing the date is the difference between evidence and decoration.
When the register cannot answer -- which happens, because it is someone else's service and it goes down -- the listing says the check has not been completed rather than reporting a failure. An unanswered question is not evidence against a business.