Short answer: Yes—here’s what that means in Australia
Under the Tax Agent Services Act 2009 (TASA), a registered BAS agent can legally perform bookkeeping and provide BAS services. In practice, that means a BAS agent can manage your books and also determine and lodge BAS/IAS amounts for GST and PAYG withholding, and advise you about those obligations.
If a task is a “BAS service” (it affects GST or PAYG W amounts, or is used to prepare a BAS/IAS), it must be done by a registered BAS or tax agent, or by someone under their supervision. If you only need administrative processing (data entry, coding based on rules, AP/AR), a bookkeeper without registration can help. For income tax returns and tax planning, you need a registered tax agent.
What BAS agents can legally do
- Bookkeeping and file maintenance in your accounting software (for example Xero, MYOB, QuickBooks Online).
- Determine, advise on and prepare BAS/IAS for GST and PAYG withholding, and lodge with the ATO.
- Review and correct GST coding, reconcile BAS accounts, and respond to ATO queries about BAS.
- Payroll processing and finalisation where it affects PAYG W and Single Touch Payroll (STP) reporting.
- Systems setup and workflow design to support accurate BAS reporting and on‑time lodgements.
Many BAS agents also offer bookkeeping services, payroll services and software support in one package so your compliance sits on top of clean data.
What requires a tax agent (not just a BAS agent)
Some services fall outside BAS agent registration and require a registered tax agent:
- Income tax returns and amendments for individuals, companies, trusts and partnerships.
- Tax planning, complex structuring advice and most fringe benefits tax (FBT) services.
- Advice about income tax consequences beyond BAS provisions.
If you need year‑end tax or structuring help, see our tax accountant services or compare providers via the accounting services hub.
What an unregistered bookkeeper can and cannot do
Allowed without registration
Data entry, coding to client‑supplied rules, bank reconciliations that do not determine tax outcomes, debtor/creditor processing, document capture, and general software training.
Requires BAS/tax agent registration or supervision
Calculating GST and PAYG W, advising on BAS amounts, preparing or lodging BAS/IAS, finalising STP, and making corrections that determine BAS figures.
Why it matters
Work that is a BAS service must meet the TPB Code of Professional Conduct, including supervision, competence, and professional indemnity insurance. Getting this wrong can lead to ATO penalties and interest.
How to keep it safe
Engage a registered BAS agent or a tax agent and let unregistered bookkeepers work under their guidance where needed.
Bookkeeper vs BAS agent vs accountant: who to choose
Match the provider to the outcome you need:
- Clean books and regular processing: start with bookkeeping services, supervised by a BAS agent if GST/PAYG W is involved.
- GST/BAS/IAS and payroll finalisation: use BAS agent services for compliant lodgements and advice.
- Tax returns and planning: engage a tax accountant.
- Broader small business support: see small business accountant or the services hub to compare options.
How to verify registration and stay compliant
Before you engage a provider, confirm their status on the Tax Practitioners Board public register. Check registration type (BAS agent or tax agent), current status and professional indemnity insurance.
- Agree clear scope: bookkeeping only, BAS/IAS, payroll, year‑end tax—or a package.
- Set deadlines and a document workflow so nothing is late.
- Confirm who reviews work and who is responsible for lodgement.
- Ensure your provider explains GST coding and payroll obligations in plain English.
Costs and engagement models
Most providers offer fixed fee packages for bookkeeping and BAS, sometimes with tiered pricing by transaction volume or payroll headcount. One‑off clean‑ups and reviews are usually quoted after a file check. Ask for inclusions (reconciliations, BAS lodgement, STP finalisation), response times and out‑of‑scope rates before you commit.
Checklist: decide in five steps
- List the outcomes you need (e.g. tidy books, BAS lodged, payroll fixed, software migration).
- Note your registrations (GST, PAYG W) and reporting frequency (monthly/quarterly).
- Confirm whether tasks are BAS services requiring registration/supervision.
- Shortlist providers that match scope and software (Xero/MYOB/QBO).
- Verify TPB registration and agree scope, deadlines and pricing in writing.
Related guidance and comparisons
If you are weighing options or refining scope, these pages help you move from the question “can a bas agent do bookkeeping” to the right next step:
- BAS Agent vs Accountant – understand roles and registrations.
- Bookkeeper vs Accountant – who fits which tasks.
- Best Way to Prepare BAS – process and checks.
- Can a BAS Agent Do Tax Returns – scope limits.
- Best Bookkeeping Approach for Sole Traders – simple setups.
- Best Accounting Software for Small Business – choose tools that fit your workflow.
Frequently asked questions
Can a BAS agent do bookkeeping?
Yes. A registered BAS agent can do bookkeeping and provide BAS services. If the work determines GST or PAYG W amounts, prepares a BAS/IAS, or gives BAS‑related advice, it must be done by (or under the supervision of) a registered BAS or tax agent. A BAS agent cannot lodge income tax returns unless also registered as a tax agent.
What can a bookkeeper do without registration?
They can perform admin tasks like data entry, coding to client rules, bank reconciliations that don’t determine tax outcomes, AR/AP processing and software training. Calculating GST/PAYG W, preparing or lodging BAS/IAS, giving BAS advice, or finalising STP requires registration or supervision.
Should I hire a bookkeeper, BAS agent or accountant?
Use a bookkeeper for day‑to‑day processing, a BAS agent for GST/BAS/IAS and payroll finalisation, and a tax accountant for income tax returns and planning. Many firms offer all three—match the provider to your scope and deadlines.
How do I check if a BAS agent is registered?
Search the Tax Practitioners Board public register for status and insurance: tpb.gov.au/search-register.
Ready to move from question to action?
Describe your situation and we’ll connect you with the right mix of bookkeeping and BAS support so you stay compliant and get the results you want.