How this usually works
Work backwards from the practical issue you want solved. That turns the broad search “how to choose a BAS agent” into a concrete decision.
- Define the outcome: e.g., catch-up bookkeeping, a clean BAS for last quarter, monthly payroll and STP, or full BAS preparation and lodgement.
- Confirm registrations: ask for the BAS or tax agent registration number and check it on the TPB public register.
- Map the scope: clean-up, reconciliations, coding, review, adjustments, preparation, lodgement and ATO interactions.
- Check your frequency: monthly, quarterly or annual. This sets the workflow, review cadence and price.
- Agree on process: document deadlines, required documents, who approves the BAS, and how urgent issues are escalated.
Australian context to keep in view
- BAS reports GST, PAYG withholding, PAYG instalments and other activity statement labels to the ATO. Lodgement may be monthly or quarterly depending on your registrations and turnover.
- Registered BAS agents and tax agents have a legislated Code of Professional Conduct and can access ATO agent portals to lodge on your behalf.
- You can confirm a practitioner’s status on the Tax Practitioners Board public register.
- Common inclusions tied to BAS: bank and payroll reconciliations, STP reporting, superannuation, fuel tax credits, and GST adjustments for assets or private use.
- Strong provider fit is about registrations, industry experience, clear engagement terms, software depth, responsiveness and transparent pricing.
What to compare before you commit
Scope
Confirm the scope covers everything you actually need: catch-up work, reconciliations, payroll/STP, BAS preparation, review, lodgement, and ATO correspondence. Get inclusions and exclusions in writing.
Software fit
Ensure the provider works fluently in your stack (Xero, MYOB, QuickBooks) and explains the workflow: who codes, who reviews, and how bank feeds, payroll and reports are reconciled before BAS is lodged.
Turnaround and communication
Ask about response times, cut-off dates for documents, approval steps, and how urgent items are handled near ATO deadlines. Clarify holiday coverage and peak-period capacity.
Commercial fit
Compare fixed-fee vs hourly pricing, contract length, and how catch-up work is billed. Look for an engagement letter, regular reporting cadence, and clear success metrics.
Best next steps
Write a short brief that lists your registrations (GST, PAYG-W, PAYG-I), BAS frequency, software, any overdue periods, payroll details, and the date you want the next BAS lodged. Share this with shortlisted providers.
Pick the provider who can restate your brief clearly, confirm responsibilities and timelines, and provide a transparent scope and price. Use the related pages below to fine-tune your choice before you engage.
Frequently asked questions
How do I choose a BAS agent?
Confirm TPB registration, match the scope to your needs, check software capability, compare fixed vs hourly fees, and make sure deadlines and responsibilities are clear in a written engagement.
What should I check before deciding?
Check registrations, industry experience, software depth, BAS frequency, whether payroll/STP is included, and how ATO deadlines and extensions are handled. Ask for a document checklist and a clear timeline.
Do I need a BAS agent or a tax agent?
For GST, PAYG withholding and activity statements, a BAS agent is sufficient. If you also need income tax returns or complex tax advice, engage a registered tax agent.
How can I verify a BAS agent is registered?
Use the Tax Practitioners Board public register and confirm the agent’s registration number and status match their name or practice.
What does a BAS agent cost?
Prices depend on complexity, frequency and whether catch-up is needed. Expect fixed fees per lodgement or monthly packages. Always confirm scope and inclusions in writing.
Can a BAS agent help with payroll and STP?
Yes. Many BAS agents include payroll setup, STP submissions and superannuation processing. Confirm whether payroll is included and how it aligns with BAS cycles.
What documents do I need for BAS?
Bank statements or feeds, sales and purchase records, payroll/STP reports, superannuation reports, and documentation for any adjustments such as fuel tax credits.
When should I get professional advice?
Seek help if your BAS is overdue, software or payroll has changed, you have ATO notices, or you are unsure about GST coding, PAYG withholding or adjustments.