Key takeaways
What this article covers, in order:
- The phone call that starts it
- Where the line comes from
- What the TPB says is and isn't a BAS service
- So, what can a bookkeeper do?
- And what does a BAS agent add?
- Where does a tax agent fit?
The short answer to bookkeeper vs BAS agent: a bookkeeper keeps your records, and a BAS agent is a bookkeeper (or similar professional) who is registered with the Tax Practitioners Board, which lets them charge for BAS services. Data entry and bank reconciliations aren't BAS services, so anyone can do them for you. Working out your GST and other BAS figures, or advising you on them, is a BAS service, and doing it for a fee needs registration.
The phone call that starts it
Hannah has a small landscaping business in Toowoomba (she's illustrative). She found a bookkeeper through a friend, $55 an hour, lovely to deal with. Three months in, Hannah asks her to "just do the BAS while you're in there." The bookkeeper goes quiet, then says she can't. She's not registered.
Hannah's confused. Isn't the BAS just adding up the books? That's what this post is about: where the line sits, why it's there, and how to set up your help so nobody's working outside it.
Where the line comes from
The Tax Practitioners Board (TPB) registers and regulates tax agents and BAS agents under the Tax Agent Services Act 2009. In plain words, the TPB says a BAS service is a service that either:
- works out or advises on your liabilities, obligations or entitlements under a BAS provision (GST, PAYG withholding and instalments, fuel tax credits and the like), or
- represents you in dealings with the Commissioner of Taxation about one of those provisions,
and it's provided in circumstances where you can reasonably be expected to rely on it.
The TPB says that you, your company or your partnership must be registered to provide BAS services for a fee or other reward. It also says there are significant penalties for providing or advertising BAS services while unregistered. That's why Hannah's bookkeeper said no. She wasn't being difficult. She was protecting both of them.
What the TPB says is and isn't a BAS service
The TPB's guidance gives examples, which is the most useful part for business owners. Here they are in plain words.
| Task | BAS service? | Why |
|---|---|---|
| Entering transactions that need no tax judgement | No | Data entry without interpreting a BAS provision |
| Bank reconciliations | No | Listed by the TPB as not a BAS service |
| Coding invoices under the instruction and supervision of a registered agent | No | The registered agent carries the judgement |
| Installing accounting software without setting tailored GST codes | No | Setup only |
| Coding transactions where you have to interpret GST rules | Yes | That's applying a BAS provision |
| Setting up software with GST codes tailored to your business | Yes | It decides how GST will be treated |
| Preparing activity statement figures or telling you what to report | Yes | Working out your BAS obligations |
| Advising on GST registration | Yes | Advice on a BAS provision |
The TPB is clear that whether something is a BAS service depends on the facts of each case. Coding is the grey area. Allocating a $14.95 bank fee to "Bank fees" is data entry. Deciding whether a mixed supply from an overseas supplier carries GST is interpretation. Same keyboard, very different job.
So, what can a bookkeeper do?
An unregistered bookkeeper can still do a lot of genuinely useful work for a fee:
- Enter and categorise transactions where no tax judgement is needed
- Reconcile every bank account and credit card each month
- Raise invoices, record bills and chase overdue customers
- Maintain the aged receivables and payables
- Clear suspense items and tidy the chart of accounts
- Prepare management reports like the P&L and Balance Sheet
- Code GST under the instruction and supervision of a registered agent
That's most of the bookkeeping week for most small businesses. The bookkeeper just can't be the person who decides your GST treatment or prepares your BAS figures for a fee, unless they're registered.
And what does a BAS agent add?
A registered BAS agent can do all the bookkeeping above, plus the BAS services: interpreting GST and the other BAS provisions as they code, preparing your activity statement figures, advising you on those obligations, and dealing with the ATO on your behalf for BAS matters.
To register, the TPB requires suitable qualifications and experience, a fit and proper person test, and professional indemnity insurance. That's part of what you're paying for: someone accountable for the judgement calls.
Where does a tax agent fit?
A registered tax agent can provide BAS services too, and a much wider range of tax agent services, such as income tax returns and broader tax advice. A BAS agent's authority is limited to BAS provisions. Many accountants are registered tax agents, which is why your accountant may handle your BAS as well as your annual return.
| Bookkeeper | BAS agent | Tax agent | |
|---|---|---|---|
| Bank reconciliation and data entry | Yes | Yes | Yes |
| Invoices, bills, debtors, creditors | Yes | Yes | Yes |
| Interpret GST when coding, for a fee | No (can code under a registered agent's supervision) | Yes | Yes |
| Prepare BAS figures, for a fee | No | Yes | Yes |
| Income tax returns and wider tax advice | No | No | Yes |
Who can lodge the BAS for a business?
Your business can lodge its own BAS, or a registered BAS agent or tax agent can do it for you. An unregistered bookkeeper can't provide that service for a fee. We'll leave the how-to there; your BAS agent or accountant handles lodgement, and that's their territory.
Three ways to set it up
Most owners land on one of these:
- Bookkeeper plus accountant. The bookkeeper keeps the books clean and reconciled every month. Your accountant (a tax agent) reviews the GST coding and handles your BAS and year end. Works well when you already have an accountant you like.
- One registered BAS agent. They do the weekly and monthly bookkeeping and the BAS work. One relationship, one invoice. Often the simplest choice for businesses with regular GST activity.
- You plus a BAS agent. You categorise the easy stuff and reconcile monthly. A BAS agent reviews the coding each quarter and takes it from there. Cheapest in dollars, dearest in your evenings.
Before you hire anyone for BAS work, check they're on the TPB's public register. It takes a minute. If your affairs are more complicated (several entities, property, overseas income), talk to a registered tax agent early.
Questions to ask before you hire
- Are you registered with the TPB as a BAS agent or tax agent? What's your registration number?
- If not, who supervises your GST coding?
- Which tasks are in your monthly fee, and which are extra?
- Will you work in my accounting software with your own login?
- How do you hand over to my accountant at year end?
How HelloBooks helps
You can invite your bookkeeper, BAS agent or accountant into the same books, so everyone works from one set of records instead of emailed spreadsheets. Free (A$0, no card, no expiry) includes 2 users. Pro at A$30 a month adds unlimited users and roles, so a bookkeeper and a BAS agent can each have their own login. The Business plan adds an audit log and advanced role-based access.
Your bookkeeper can do the reconciliation work: connect your bank account (most Australian banks and cards) or import a CSV, confirm categories in the review list, then use the reconcile screen's AI match suggestions to clear the exceptions and export a reconciliation report as PDF or CSV. HelloBooks doesn't lodge anything with the ATO. See the bookkeeping features or plans and pricing.
FAQs
Can a bookkeeper lodge a BAS?
Not for a fee unless they're a registered BAS agent or tax agent. An unregistered bookkeeper can still prepare clean, reconciled books for the registered agent who does.
Is bank reconciliation a BAS service?
No. The TPB lists bank reconciliations as an example of something that isn't a BAS service, so any bookkeeper can do them for you.
Can my unregistered bookkeeper code GST?
They can enter transactions that need no tax judgement, and they can code under the instruction and supervision of a registered agent. Interpreting GST rules when coding, for a fee, is a BAS service.
Is a BAS agent more expensive than a bookkeeper?
Often a little, because of registration, insurance and the responsibility involved. Get quotes for the same defined scope so you're comparing like with like.
How do I check if someone is a registered BAS agent?
Search the TPB's public register on tpb.gov.au using their name or registration number.
Sources: Tax Practitioners Board, BAS services and TPB(GS) 43/2023 What is a BAS service?, checked Oct 2026.
Sort out who's allowed to do what before the quarter ends, and the BAS stops being a scramble.
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