Bookkeeper vs BAS agent: do you need both?
Updated: 42 minutes ago
Quick answer: Not necessarily. A bookkeeper keeps your day-to-day records, and a person or firm can do that without being registered. Once someone prepares or lodges your business activity statement (BAS) for a fee, the Tax Practitioners Board (TPB) says they generally need to be registered. One firm can do both, as long as the people doing the BAS work are registered. You stay responsible for your own obligations either way.
Key takeaways
Bookkeeping and BAS services are different jobs, and the registration rules differ.
The TPB says anyone providing BAS services for a fee or other reward must be registered, unless an exemption applies.
A BAS agent's role is narrower than a registered tax agent's. For example, a BAS agent can't prepare and lodge income tax returns.
You can check registration yourself on the TPB Register, and it is quick.
Engaging a professional doesn't remove your responsibility for the records and information you provide.
What does a bookkeeper actually do?
A bookkeeper keeps track of your day-to-day financial transactions in account books or accounting software. Business.gov.au says they may also look after banking, prepare invoices, chase overdue payments, pay staff wages, monitor cash flow and prepare some financial statements.
The TPB says a person who purely provides bookkeeping, and does not provide BAS services for a fee, doesn't need to register. That is why you will see bookkeepers who are not registered with the TPB. It doesn't mean they are doing anything wrong, but it does mean the TPB's registration protections don't apply to that bookkeeping work.
We didn't find official guidance setting out a standard list of bookkeeping tasks or qualifications, so ask any bookkeeper exactly what they will and won't do.
What is a BAS agent, and why does registration matter?
A BAS agent is a person or firm registered with the TPB to provide BAS services. The TPB says anyone providing BAS services for a fee or other reward must be registered unless an exemption applies. Registration matters because it shows the person has met the TPB's requirements and is on a public register you can check.
The TPB describes BAS services as working out or advising on a client's obligations under a BAS provision, and representing a client to the Commissioner of Taxation about a BAS provision. The TPB's BAS services page is the place to confirm whether a particular task counts.
To register as a BAS agent, the TPB's qualifications page says a person needs at least a Certificate IV in Financial Services (Bookkeeping or Accounting) or higher, a Board-approved GST/BAS course and relevant experience. Registration can also come with conditions, which is one reason to look at the register entry rather than relying on a title.
The TPB also says a company or partnership offering BAS services must itself be registered and have enough registered individuals to supervise. We didn't find a simple one-line rule in the pages we reviewed for how that works inside every firm, so ask the firm who will actually prepare your BAS.
What does a registered tax agent add?
A registered tax agent has a wider scope than a BAS agent. Business.gov.au says a tax agent can prepare and lodge your tax return and BAS, explain tax laws and deal with the ATO for you. A BAS agent, by contrast, can only prepare and advise on your BAS and can't help with your tax return.
If you need an income tax return prepared, or advice beyond BAS matters, check that the person is a registered tax agent. Talk to a registered tax agent about which type of professional fits your situation, because it depends on your structure and what you need done.
How do a bookkeeper, BAS agent and registered tax agent compare?
In short, a bookkeeper handles records, a BAS agent handles BAS services, and a registered tax agent covers tax returns as well. Tax agents and BAS agents must be registered with the TPB; a bookkeeper who only does bookkeeping does not. Always check the entry on the register.
| | Bookkeeper | BAS agent | Registered tax agent | |---|---|---|---| | Typical role | Records transactions, and may handle banking, invoices, wages and some financial statements (Business.gov.au) | Prepares and lodges BAS, advises on BAS matters, and can deal with the ATO about BAS (TPB) | Can prepare and lodge tax returns and BAS, explain tax laws and deal with the ATO (Business.gov.au) | | TPB registration | Not needed if providing only bookkeeping, not BAS services for a fee (TPB) | Required for BAS services provided for a fee, unless an exemption applies (TPB) | Required (Business.gov.au) | | Limits | We didn't find official limits beyond the registration rule above | Can't prepare and lodge income tax returns (TPB) | Check the register for any conditions on the registration | | What to check | Ask what they will and won't do, and whether anyone registered reviews BAS work | Registration status, expiry, conditions and sanctions on the TPB Register | Registration status, expiry, conditions and sanctions on the TPB Register |
Can one firm be both my bookkeeper and my BAS agent?
Yes, one firm can offer both, but the registration rule applies to the BAS work. If a firm prepares or lodges your BAS for a fee, it or the individuals involved should be on the TPB Register. Ask who will do the bookkeeping, who will do the BAS, and whether the BAS person is registered.
Having one firm can mean fewer handovers, because the person who sees your records also understands your BAS. The trade-off is the same as with any single provider: check the registration yourself rather than assuming it. A firm that is registered for BAS isn't automatically registered for tax returns, so confirm each service you want.
What am I still responsible for as the business owner?
You remain responsible for your own tax obligations and for the records and information you give your adviser. The ATO says you can look after your record keeping yourself or engage a registered tax or BAS agent, or a bookkeeper, to do all or part of it, but that choice doesn't hand your obligations to someone else.
The ATO's page on lodging with a registered tax agent says you carry responsibility for the records you give your agent. In practice, that means keeping your records complete, answering questions promptly and reading what is lodged on your behalf. We didn't find a single ATO page listing every owner duty, so ask your registered tax agent what applies to your business.
How do I choose and check someone?
Use the TPB Register before you hand over records or sign anything. The TPB's register help page says you can search by legal or registration name, ASIC registered business name or registration number. Each entry shows registration status and expiry date, and may show conditions and sanctions.
Decide what you need done. Records only, BAS, or tax returns as well.
Ask for the registration number. Registered practitioners can display the TPB's registered tax practitioner symbol, and the number beside it can be searched.
Search the TPB Register. Confirm the name, the status, the expiry date and any conditions or sanctions.
Match the registration to the service. A BAS agent registration doesn't cover income tax returns.
Ask who does the work. Find out who prepares your BAS and who reviews it.
Verify claims separately. The TPB notes association details on the register are provided by the practitioner, and encourages you to make your own enquiries.
Be cautious of impostors. The TPB warns that illegitimate or terminated agents sometimes advertise tax services on job boards.
Get the arrangement in writing. Scope, who does what and how you will share records.
How Marl can help
If you'd like to talk through which type of professional suits your situation, you can talk to Marl about it. Please speak to a registered tax agent for advice on your own tax and BAS position. For day-to-day bookkeeping and payroll help, see Marl's bookkeeping and payroll services.
Frequently asked questions
Does my bookkeeper need to be registered with the TPB? Not if they only provide bookkeeping. The TPB says a person who purely provides bookkeeping and does not provide BAS services for a fee doesn't need to register. If they prepare or lodge your BAS for a fee, check the TPB Register.
Can a BAS agent do my income tax return? Not as a BAS agent. The TPB says BAS agents can't prepare and lodge income tax returns. For that you need a registered tax agent. Check the register entry to see exactly what the person is registered to do.
Does hiring a BAS agent make them responsible for my BAS? You still carry responsibility for your own obligations and for the records you give them. The ATO says you are responsible for the records you provide your agent. Ask the agent what they check and what you need to confirm.
How do I know a tax professional is genuine? Search the TPB Register by name, ASIC business name or registration number. The entry shows registration status, expiry date, any conditions and any sanctions such as a suspension. Also ask for the registration number shown beside their registered symbol.
What does a bookkeeper and BAS agent cost? We haven't published cost figures and didn't find official pricing guidance. Fees vary with your business and what you need. Ask each provider for a written scope and quote, and compare like with like.
Sources
This article is general information only. It is general in nature, does not take into account your objectives, financial situation or needs, and is not legal, tax or financial advice. Speak to a qualified adviser or registered tax agent before you act. Last updated 4 November 2026.
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