Accountant vs Tax Agent vs Bookkeeper: Who Does What in Australia

A bookkeeper records your day-to-day transactions, a BAS agent lodges your GST and BAS, a registered tax agent prepares and lodges your income tax return, and an accountant interprets the numbers and advises on strategy. They aren't competing choices. They're links in one chain, and most growing Melbourne businesses end up using two or three of them. The trick is knowing which role does what, and which ones the law requires to be registered.

We're RPS Accountants & Business Advisors in Epping, and we field this question constantly from new business owners who've been told they "need an accountant" when what they actually need first is clean books. Here's the plain-English breakdown.

The one distinction that matters most

Before the roles, understand the legal line. Only two of these titles are regulated by the Tax Practitioners Board (TPB): BAS agent and tax agent. A bookkeeper needs no registration to record transactions. And "accountant" is a job description, not a licence; an accountant can only charge to lodge your tax return if they also hold tax agent registration. So the real question isn't "accountant or bookkeeper," it's "who is legally allowed to do the specific task I need, and are they registered for it?"

The bookkeeper: keeps the record straight

A bookkeeper handles the daily flow of money. They record transactions, reconcile bank feeds, issue and pay invoices, run payroll, and keep your accounts tidy in software like Xero, MYOB, or QuickBooks. Good bookkeeping is the foundation everything else stands on; a tax agent working from messy books either charges more to fix them or misses things.

Bookkeepers don't need TPB registration to do this recording work, and formal qualifications aren't legally mandated, though most hold a Certificate IV. The limit: a plain bookkeeper cannot advise on or lodge your BAS for a fee. For that, they need to also be a registered BAS agent. Our bookkeeping and accounting service covers this groundwork so the year-end return is built on accurate numbers rather than a shoebox.

The BAS agent: handles GST and BAS

A BAS agent is a bookkeeper who has stepped up into a TPB-registered role. They can work out and advise on your GST, PAYG withholding, and other BAS-related obligations, prepare and lodge your Business Activity Statement, and deal with the ATO on BAS matters. To register, they must meet education and experience standards and carry professional indemnity insurance.

The boundary: a BAS agent cannot prepare your income tax return for a fee unless they also hold tax agent registration. So a BAS agent keeps your quarterly GST compliant, but your annual return still goes to a tax agent.

The tax agent: prepares and lodges your return

A registered tax agent is the only professional who can legally charge to prepare and lodge income tax returns, for individuals, sole traders, partnerships, trusts, and companies. They apply tax law to your situation, identify deductions, and represent you to the ATO on income tax matters. Registration requires a relevant qualification, supervised experience, and ongoing compliance with the TPB Code of Professional Conduct.

This is the role most people mean when they say "I need an accountant for my tax." Preparing returns correctly and defending them if the ATO asks questions is the heart of our taxation service.

The accountant: interprets and advises

Accountant is the broadest title and the least regulated as a word. A qualified accountant (typically CA or CPA) analyses your financial position, prepares financial statements, and advises on structure, cash flow, and strategy. Where a tax agent asks "what do we lodge," an accountant asks "what should you do next."

In practice the strongest firms combine the titles: the same qualified accountant is also a registered tax agent, so advice and lodgement come from one place. The advisory layer, deciding whether to incorporate, when to buy equipment, how to fund growth, is where our business advisory service lives, and it's the part software and DIY tools can't replace.

Who does what, at a glance

Role

Core job

TPB registered?

Can lodge your tax return for a fee?

Bookkeeper

Records daily transactions, payroll

No

No

BAS agent

Prepares and lodges BAS, advises on GST

Yes

No

Tax agent

Prepares and lodges income tax returns

Yes

Yes

Accountant

Financial statements, strategy, advice

Only if also a tax agent

Only if also a tax agent

Which one do you actually need?

Match the role to the stage. A sole trader with simple affairs may need only a tax agent once a year. A business with staff and GST needs a bookkeeper (or BAS agent) through the year plus a tax agent at year-end. A business making bigger decisions, restructuring, buying, hiring, wants an accountant advising alongside. The pipeline runs in order: the bookkeeper's records feed the BAS agent's lodgements, which feed the tax agent's return, which the accountant reads to plan your next move. Skip a link and the ones downstream cost more.

FAQs

Can one person be all of these? Yes. A single firm or individual can hold both BAS agent and tax agent registration and provide bookkeeping and advisory work, which is why many people use one provider end to end.

Do I legally need a registered agent, or can I use any bookkeeper? You can use any bookkeeper for recording work. But to lodge your BAS or income tax return for a fee, the person must be a registered BAS agent or tax agent, respectively. Recording is unregulated; lodging for payment is not.

Is a bookkeeper cheaper than an accountant? Usually, because the work is different. Bookkeeping is ongoing and routine; tax and advisory work is specialised and periodic. Using a bookkeeper to keep clean records often reduces what you pay at tax time.

I just want my tax return done. Who do I call? A registered tax agent. Confirm their registration on the TPB public register at tpb.gov.au before engaging.

Not sure which of these you need this year? Book a free 30-minute chat with our Epping team. We hold both registrations, so we'll tell you honestly whether you need bookkeeping, a return, advice, or all three.

RPS Accountants & Business Advisors is a Melbourne-based accounting firm providing tax, accounting, and advisory services to individuals and businesses. The firm is committed to delivering clear, tailored financial solutions that streamline processes