Bookkeeper or BAS Agent? What Each Can Do for Your Small Business

Many Australian small business owners use "bookkeeper" and "BAS agent" as if they mean the same thing. They don't. Both can work in your Xero or MYOB file, but the law draws a clear line between keeping your books and providing BAS services, and only one of them needs to be registered with the Tax Practitioners Board (TPB).

Knowing where that line sits helps you hire the right people, avoid paying agent rates for data entry, and make sure the person preparing your BAS is allowed to do it.

The short answer

• A bookkeeper records and organises your financial transactions: data entry, coding transactions to the rules you've been given, bank reconciliations, invoices, bills and reports. None of that needs TPB registration.
• A registered BAS agent (or a registered tax agent) can provide BAS services for a fee: working out what goes on your business activity statement, advising on GST or PAYG withholding, and dealing with the ATO for you.
• Many businesses use both: a bookkeeper keeps the file clean every week, and a registered agent reviews it and prepares and lodges the BAS.

What counts as a "BAS service"?

The TPB's guidance describes a BAS service as a tax agent service connected to a BAS provision that a client can reasonably be expected to rely on. BAS provisions cover things like GST and the other indirect taxes (wine tax, luxury car tax, fuel tax) and the PAYG withholding and instalment system.

The TPB gives examples of work that is a BAS service, including:

• reconciling data to work out the figures for an activity statement
• completing an activity statement for a client, or telling them which figures to include
• confirming the figures to be included on a client's activity statement
• coding transactions where that requires interpreting a BAS provision (for example, deciding the GST treatment of a purchase)
• setting up accounting software with default GST codes for a client
• payroll work that requires interpreting tax law, such as working out PAYG withholding, and most superannuation guarantee work
• representing a client in dealings with the ATO about these taxes

Businesses or individuals providing BAS services for a fee must be registered with the TPB. The TPB notes that providing or advertising BAS services while unregistered can attract significant civil penalties.

What a bookkeeper can do without registration

The same guidance lists work that is not a BAS service, because it doesn't involve interpreting or applying a BAS provision. That includes:

• data entry that doesn't involve calculating activity statement figures
• coding transactions based on instructions you've been given
• coding tax invoices under the instruction and supervision of a registered tax or BAS agent
• bank reconciliations
• processing payments and keeping records
• installing accounting software without setting its tax codes
• general software training that isn't tied to a client's specific tax situation

In practice, that covers most of the weekly work that keeps a small business's books healthy: getting every transaction into the file, matching it to the bank, chasing missing receipts, sending invoices, entering bills and producing a profit and loss.

"But I lodge the BAS myself." Does that change anything?

Not necessarily. The test is about the service, not who presses "lodge". If someone works out your BAS figures or tells you what to put in each label, and you're reasonably expected to rely on that, it's likely a BAS service, even if you lodge it yourself. The TPB also says a disclaimer doesn't automatically remove the need for registration.

So if a provider offers to "prepare your BAS figures, you just lodge them", check that they're registered.

How to split the work (and save money)

A sensible set-up for many small businesses looks like this:

1. Weekly or monthly bookkeeping: transactions entered and coded using GST codes that you and your BAS agent have set, bank accounts reconciled, invoices and bills kept up to date.
2. Quarterly review by your registered BAS agent or accountant: they review the coding, work out the BAS figures and lodge your BAS with the ATO.
3. Year-end: your tax agent prepares your tax return from a clean, reconciled file.

Because the registered agent starts from tidy, reconciled books, they spend their (usually more expensive) time on review and compliance rather than on catching up data entry.

How to check someone is registered

Before you let anyone prepare or lodge your BAS, check the TPB register on the Tax Practitioners Board website. It shows whether a person or business is a registered BAS or tax agent, and any conditions on their registration. Business.gov.au also reminds owners to make sure anyone doing their BAS is registered with the TPB.

Questions to ask before you hire

• Are you registered with the TPB? If they'll prepare BAS figures, give GST advice, or run payroll calculations for you, they need to be.
• Who sets the GST codes in my file? If it's the bookkeeper, they need to be registered, or working under a registered agent's instruction and supervision.
• What exactly is included each month? Reconciliations, invoices, bills and reports should be clearly listed.
• Who will my BAS agent or accountant deal with? A good bookkeeper works alongside them and hands over a clean file each quarter.

Let us handle the bookkeeping

TallyNeo provides bookkeeping services only for Australian small businesses. We keep your Xero, MYOB or QuickBooks Online file reconciled and up to date every month, using the GST settings you and your BAS agent have set, so your agent opens a clean file each quarter. We're not a registered BAS or tax agent, so we don't prepare or lodge BAS or tax returns.

See how TallyNeo works in Australia or book a free 30-minute call.

This article is general information, not tax advice. It summarises Tax Practitioners Board guidance as at October 2026; check the TPB website or speak to a registered tax or BAS agent about your situation.