What should accounting firms delegate and review when managing BAS in Australia?
Are your senior accountants spending BAS week fixing reconciliations, chasing missing records and checking work that should have been resolved earlier? The real challenge is not whether BAS preparation can be outsourced. It is knowing exactly what to delegate, what to escalate and what your internal team must still review. Should reconciliations move offshore? What about payroll matching, GST coding, or draft workpapers?
And where should the handoff stop when judgement is required? This blog explains how accounting firms can manage BAS in Australia with clearer responsibilities, stronger review points and a practical workflow that helps outsourced preparation reach your reviewers ready for decision-making.
Key takeaways
Delegate repeatable preparation only when the expected output is defined.
Escalate missing evidence, unusual transactions and unresolved balances.
Keep technical judgement, client advice, final review and lodgement inside the firm.
Give reviewers workpapers and exceptions in one pack.
Set supervision and escalation rules before BAS work begins.
What should your firm check before outsourcing BAS work in Australia?
Before deciding what to delegate, first check what each client’s BAS actually covers. The ATO guidance on business activity statements shows that BAS must include GST, PAYG withholding, PAYG instalments and other taxes. Your workflow should therefore match the client’s registrations, not rely on one standard checklist.
The business activity statement preparation guidance also recommends reconciling figures to records and confirming the correct reporting period.
Deadlines matter too. Quarterly BAS is due on 28 October, 28 February, 28 April and 28 July. Additionally, the monthly BAS is due on the 21st of the following month. Registered-agent dates can differ, so check your client’s BAS lodgement and payment dates before assigning the work. Once the obligation and deadline are clear, deciding what can be delegated becomes much easier.
Want more BAS files review-ready before lodgement?
Book a call now
Which BAS preparation tasks should our firm delegate?
The best tasks to delegate are those with a clear process, defined supporting records and an expected output. The right outsourced accounting partner should know exactly what to complete, what not to decide, and what must come back to your internal team for review.
The table below shows how that division can work in practice.
| BAS delegation and review table | ||
|---|---|---|
| Task to delegate | What the outsourced preparer does | What your firm should receive for review |
| Source-document check | Check whether required bank statements, invoices, payroll reports and other agreed records have been provided for the BAS period. | A clear list of missing, incomplete or unreadable documents that need follow-up. |
| Bookkeeping clean-up | Correct routine entries using your firm’s documented coding rules and identify transactions that cannot be confidently classified. | An updated ledger with unclear, unusual or unsupported entries separately flagged. |
| Bank and card reconciliations | Match transactions and closing balances to bank and credit-card records for the reporting period. | Completed reconciliations plus any unmatched transactions or unexplained balance differences. |
| GST coding checks | Review recurring transactions against your firm’s approved GST treatment and supporting documents. | A list of unusual, mixed-use or uncertain GST items requiring technical review. |
| Payroll and PAYG reconciliation | Compare payroll reports, ledger balances and PAYG withholding figures for the BAS period. | A completed reconciliation showing any differences between payroll records and accounting figures. |
| BAS workpapers and draft | Prepare supporting schedules and draft BAS figures from the completed reconciliations and records. | Draft figures, supporting workpapers and one exception list showing anything still unresolved. |
Which BAS items should your firm keep under internal review?
The following five areas should remain part of your firm’s internal review:
- GST items that are not straightforward: If a transaction involves mixed business and private use, an adjustment, or an unusual GST treatment, your reviewer should decide how it is handled. The preparer should flag the item and attach the relevant document instead of making an assumption.
- Unreconciled differences: A bank balance, payroll figure, or ledger amount that doesn’t match should be investigated before the BAS moves forward. Your reviewer should be able to see the difference, what has already been checked, and what information is still missing.
- Large or unexpected changes: A noticeable surge or fall in sales, GST payable or PAYG withholding deserves a closer look. Check whether the movement matches the client’s records and business activity before accepting the figure.
- Items still waiting for an answer: Missing invoices, unclear transactions and unanswered client questions should be gathered into one exception list. Your team can then decide which items must be resolved before the BAS is approved.
- Final review and lodgement: Your firm should keep control of the final figures, client advice, approval and authorised lodgement. Where BAS services are performed by an unregistered third party, the registered practitioner must maintain appropriate supervision and control over that work.
Where payroll forms part of the BAS process, it is also worth reviewing how Payday Super changes for firms may affect the information your team needs to check.
People also like reading
How should your firm structure an outsourced BAS workflow?
A good BAS workflow should make it obvious what happens next at every stage. Your outsourced accountant should never need to guess what to prepare, who to ask or when a file is ready for review.
A practical six-stage process can look like this:
1. Start with the right client information: Give the preparer a clear list of what is needed for that particular client, such as bank statements, payroll reports, invoices and accounting records. Match that list to the client’s BAS obligations and reporting frequency so unnecessary documents are not collected.
2. Complete the agreed preparation first: The outsourced accountant can then work through reconciliations, routine GST coding checks, payroll matching and BAS workpapers within your documented process. Anything that does not fit those instructions should be flagged rather than quietly decided.
3. Raise problems as soon as they appear: Missing invoices, unexplained balances or unusual transactions should go to a named person in your firm while there is still time to resolve them. Waiting until the reviewer opens the file only turns a preparation issue into a lodgement problem.
4. Give the reviewer one complete pack: Send the draft BAS figures together with reconciliations, workpapers and one list of unresolved items. Your reviewer should be able to understand what has been completed and what still needs a decision without searching through emails or folders.
5. Keep judgement inside your firm: Your internal team should decide how unusual transactions are treated and handle client questions that require professional advice. Record important decisions so the same issue does not return as a new question next quarter.
6. Review, approve and lodge: Once outstanding items are cleared, the file moves through your firm’s normal review and approval process. The person responsible for final sign-off should be working from completed preparation rather than finishing unfinished bookkeeping.
Before the first live BAS file is handed over, onboarding your accounting outsourcing partner should cover templates, system access, reviewers, turnaround times and escalation contacts.
What BAS preparation work can AccountGlobal take off our team?
AccountGlobal can support the preparation work that keeps your accountants inside BAS files longer than necessary. If client records arrive incomplete, we can check the agreed document pack and prepare a missing-information list for follow-up. If bank or credit-card accounts are not reconciled, we can complete the agreed reconciliation work and flag any differences that still need your team’s attention.
We can also compare payroll reports with ledger and PAYG figures, review routine GST coding against your firm’s documented instructions, prepare supporting schedules and assemble draft BAS workpapers.
Moreover, our support model can match the way your BAS workload arrives. Project-based accounting support can help clear a defined backlog or busy reporting period. Also, a dedicated virtual accountant can handle recurring preparation across an established client portfolio.
If managing BAS in Australia is repeatedly pulling your senior accountants back into reconciliations, missing-record follow-up or workpaper preparation, contact us today to identify exactly which BAS tasks can move before internal review.
FAQs about BAS outsourcing for Australian accounting firms
1. Can an accounting firm outsource BAS preparation while keeping lodgement internally?
Yes. Your firm can delegate clearly defined preparation work while retaining review and lodgement internally. The important point is to document the outsourced scope, set escalation rules and maintain appropriate supervision over work performed on your firm’s behalf.
2. How should your firm build BAS checklists for different clients?
Build each checklist around the client’s registrations, reporting frequency and usual transactions. A GST-only client should not follow the same process as one reporting PAYG withholding. Separate templates help preparers request the right records from the start.
3. When should your firm separate bookkeeping clean-up from BAS preparation?
Separate the two when older unreconciled periods, missing transactions or historic coding errors would materially expand the BAS job. Treating catch-up work separately makes the scope visible and prevents current-period BAS preparation from being delayed by previous bookkeeping problems.
4. When should your firm change its BAS outsourcing workflow?
Change it when the same issue keeps returning. Repeated missing payroll reports, coding questions or reconciliation differences usually mean an instruction or checklist needs improvement. Fix the source of the problem before the next BAS period begins.
Final thoughts on managing BAS in Australia with clearer handoffs
Managing BAS in Australia becomes more controlled when your firm decides in advance what preparation can be delegated and where internal review must begin.
Routine reconciliations, workpapers and document checks can be completed before the file reaches your senior team. Missing information and unusual items should arrive as clearly identified exceptions, while technical decisions, client advice and final lodgement remain with your firm.
That gives reviewers a more complete file and makes the outsourcing boundary easier to manage each reporting period.
If you want to identify where that boundary should sit in your own BAS process, book a call with our team to map the preparation tasks we can support before your team reviews and lodges.
