The BAS was lodged on time.
That was evidence that an important compliance obligation had been completed. It was not a clean bill of health for every number in the accounting file.
In this illustrative case study, an eight-person consulting business generates approximately $1.2 million in annual revenue. Its quarterly BAS has been prepared and lodged by the due date, but management wants to use the accounts to make decisions about hiring and cash.
A review of the underlying balance sheet identifies three material balances that still require investigation.
That does not mean the BAS was necessarily wrong. It demonstrates something more useful: tax compliance and decision-ready management accounts are related, but they are not the same job.
What a BAS is designed to do
A Business Activity Statement reports defined tax obligations to the Australian Taxation Office. Depending on the business, that can include GST, PAYG withholding, PAYG instalments and other activity-statement amounts.
The BAS is not designed to certify that every account in Xero is correct.
By itself, an on-time lodgment does not establish whether:
- an old customer invoice is still collectible;
- a supplier bill has been duplicated;
- a loan agrees with the lender's statement;
- every bank and credit-card account has been reconciled;
- payroll and superannuation liabilities make sense;
- a clearing account contains old unresolved items; or
- revenue and costs have landed in the most useful management-reporting period.
Those questions belong to the wider bookkeeping and close process.
Three balances that still needed work
The loan was $28,400 away from the lender statement
Xero showed a business loan balance of $146,000. The lender statement showed $117,600.
The difference had accumulated because repayments were not consistently separated between principal and interest. Cash left the bank and the BAS could still be prepared, but both the liability and parts of the expense history required correction.
The practical control is simple: the accounting balance should periodically agree with independent lender records.
A $17,900 payroll clearing balance had rolled forward
Employees were paid and payroll submissions continued. However, $17,900 remained in a payroll clearing account across multiple periods.
The balance included a mixture of timing differences and old entries, but no current reconciliation explained the total.
A clearing account is not meant to become permanent storage. If it remains open, someone should be able to identify every component and how it will clear.
$19,800 of receivables did not reflect current customer debts
The aged receivables report showed $63,500 outstanding. Of that, $19,800 related to customer payments that had not been allocated, duplicated invoices and a credit that had not been processed.
Those items did not necessarily change what had been reported on the BAS for the quarter. They still changed the usefulness of the balance sheet and the founder's view of expected cash collections.
The founder could have chased customers for amounts they did not owe while overlooking the real overdue balances.
Why BAS and the P&L may legitimately differ
A founder may compare sales on the BAS with revenue on the P&L and assume one report must be wrong because the numbers do not match.
Not necessarily.
GST can be reported on a cash or non-cash basis depending on the business's circumstances. Management accounts may be viewed using a different basis or reporting period. GST-inclusive and GST-exclusive presentation, adjustments and timing can also create differences.
The useful control is not demanding that two reports always show the same number. It is being able to explain why they differ.
The dangerous assumption: compliance means closure
The word “done” can hide several different standards.
BAS done. Payroll done. Bank reconciled. Month done.
A reliable close is closer to a chain of evidence:
- cash agrees to external statements;
- receivables and payables have been reviewed;
- payroll-related balances reconcile;
- GST accounts connect to activity-statement records and payments;
- loans agree to lender statements;
- old clearing balances have been investigated;
- material timing adjustments have been considered; and
- someone has reviewed the balance sheet.
Only then can management understand the level of confidence it should place in the reports.
What the owner should ask
- When was the balance sheet last reviewed—not merely generated?
- Do bank and credit-card accounts agree with external statements?
- Have old receivables and payables been investigated?
- Can someone explain payroll, PAYG and superannuation balances?
- Do loans agree with lender records?
- Are old amounts sitting in clearing, suspense or uncategorised accounts?
- Are management reports produced before or after these checks?
- Is the scope of the accountant's work clear to both sides?
The final question is often the most important. A business may buy quarterly BAS preparation while assuming it has outsourced a complete monthly close. Both parties can believe the work is being done while imagining different work.
A clearer operating sequence
A growing service business can use a sequence such as:
regular bookkeeping → unresolved questions → account reconciliations → month-end review → management reporting → periodic BAS and tax compliance
Each layer has a different purpose. Not every business needs an internal finance department, but every business should understand which layers it is actually receiving.
The BAS is important. It just is not the whole accounting system.
Sources and further reading
- Business activity statements — Australian Taxation Office ↗
- PAYG withholding — Australian Taxation Office ↗
- Do a year end in Xero — Australia ↗
This article is not tax, accounting or financial advice for your circumstances. Accounting treatment depends on the facts of a transaction and the requirements applying to the business. Seek professional advice before making a material accounting or tax decision.