Every quarter, thousands of Australian businesses hand their BAS paperwork to someone they trust to lodge it with the ATO. Many of those businesses don't realise that trust isn't enough — the person handling their BAS needs a specific legal authorisation to do it on their behalf.
That authorisation is called a BAS agent registration. And not every bookkeeper has one.
What the law actually says
Under the Tax Agent Services Act 2009, preparing and lodging a Business Activity Statement for a fee is a BAS service. Providing a BAS service without being registered with the Tax Practitioners Board (TPB) is illegal.
This matters more than most people realise. If your unregistered bookkeeper makes an error on your BAS, you carry the liability — not them. There's no TPB protection. No recourse through a regulated body. Just you and an ATO audit.
"If your unregistered bookkeeper makes an error on your BAS, you carry the liability — not them."
A registered BAS agent, by contrast, has passed educational requirements, holds professional indemnity insurance, and operates under the TPB's code of conduct. If something goes wrong, there's a complaints process. There's accountability.
What a registered BAS agent is actually authorised to do
The registration opens up a specific set of services that an unregistered bookkeeper simply cannot legally provide:
- Prepare and lodge Business Activity Statements (BAS)
- Prepare and lodge Instalment Activity Statements (IAS)
- Advise on GST, PAYG withholding, and fuel tax credit obligations
- Correspond with the ATO on your behalf
- Apply for lodgement deferrals on your behalf
- Represent you in ATO audits relating to BAS obligations
That last point — ATO deferrals — is one most people don't think about until they need it. Registered BAS agents can access a lodgement program that grants extended due dates. If your quarter is messy and you need more time, your registered agent can often get it for you. An unregistered bookkeeper cannot.
The risks you might not know you're running
Using an unregistered person to prepare your BAS isn't a grey area. It exposes you to:
- Penalties for incorrect lodgements — with no professional standing behind the work
- No TPB recourse — if your bookkeeper disappears or makes a costly mistake
- No professional indemnity coverage — so any errors come back to you
- ATO scrutiny — inconsistent lodgements attract attention
None of this means unregistered bookkeepers are doing bad work. Many are excellent at the record-keeping side. But record-keeping and BAS lodgement are different things. Keeping your books and lodging your BAS are not the same job.
How to check if your bookkeeper is registered
The TPB maintains a public register at tpb.gov.au. Search your bookkeeper's name or business name. If they're not there, they're not registered. It takes about 30 seconds to check.
Why we lead with this credential
Antoinette Crouch is a Registered BAS Agent — Agent #26211942, registered with the TPB since ALC was founded in 2012. That's not a footnote. It's the foundation everything else is built on.
In 14 years of practice, we've seen clients come to us after costly experiences with unregistered bookkeepers. Not because those bookkeepers were dishonest — but because the client didn't know to ask the question.
So ask the question. Before you hand over your BAS, ask: "Are you a registered BAS agent?" Then verify it on the TPB register. It takes 30 seconds and it matters.
If you'd like to see the full scope of what a registered BAS agent handles on your behalf, our BAS services page covers it in detail. Or if you'd like to talk through your current setup — whether you're looking to switch or just want a second opinion — a free 15-minute call is the easiest place to start.
