The BAS Is Lodged. But Are the Books Finished?
Lodging the BAS tells the ATO what was reported. It does not automatically update every GST, PAYG and ATO control balance in the accounting file. The closing process connects the two.
🥕 Review Your BAS Process
Lodgment and bookkeeping happen in two different places.
The BAS or IAS is lodged with the ATO. The bookkeeping file contains the detailed transactions and ledger balances that produced those figures. Lodgment does not, by itself, transfer the lodged amounts into an ATO control account in the file.
A closing adjustment records the lodged position and prepares the ATO balance for reconciliation against payments, refunds, offsets and other account activity.
When both sides are maintained, the balance sheet can be reconciled to the ATO account instead of carrying unexplained GST and PAYG balances forward.
Three events should form one complete process.
1. Prepare and lodge
Reconcile the BAS figures, retain the working papers and lodge the activity statement.
2. Record the lodged result
Post the approved closing entry or other documented accounting treatment to the ATO control account.
3. Reconcile settlement
Match the payment, refund or offset and reconcile the bookkeeping balance to the ATO account.
One balance should explain what the business owes—or is owed.
The closing entry moves the lodged GST, PAYG withholding, PAYG instalment and other relevant amounts from their ledger accounts into the account used to track the ATO position.
The ATO’s online account shows activity statements, assessments, payments, refunds, offsets, interest and penalties. The accounting file should be capable of being reconciled to that external record.
The name and structure of the control account may differ between files. What matters is that the treatment is documented, applied consistently and supported by the lodged statement and working papers.
Do not force a balance to agree with an unexplained journal. Differences should be traced to the underlying activity.
The best method is the one that produces a controlled, reconcilable record.
Closing journal
Records the lodged amounts at the chosen closing date and transfers the net position to an ATO control account.
CLEAR CONTROLATO bill
Can provide a visible payment item, but the setup must correctly clear the relevant tax accounts and handle refunds or offsets.
CHECK THE WORKFLOWBank transaction only
Recording only the cash movement can leave lodged GST and PAYG balances uncleared until payment and may not explain the assessment.
INCOMPLETE ON ITS OWNA journal-based closing process is commonly used because it separates the recognition of the lodged liability or credit from its later settlement. However, the appropriate entries depend on the file, BAS working papers and advice governing that engagement.
A repeatable closing routine protects the next BAS.
Lock down the lodged figures
Save the final BAS or IAS, lodgment receipt and the working papers showing how every reported amount was calculated.
Post the approved closing entry
Clear the relevant GST, PAYG and other ledger balances to the ATO control account using the documented amounts.
Attach the evidence
Keep the statement, receipt, calculation and entry together so another reviewer can follow the treatment.
Reconcile the ATO account
Match payments, refunds, offsets, interest and penalties, then investigate any remaining difference.
Protect the closed period
Use appropriate lock dates and communicate later changes so the lodged BAS is not silently altered.
The journal is only as reliable as the evidence behind it.
- Reporting period and basis
- GST collected and GST credits
- PAYG withholding reported
- PAYG instalment reported
- Adjustments included in the BAS
- Net payable or refund
- Lodgment receipt and date
- Closing entry reference
Responsibility must be agreed—not assumed.
The person who lodges the BAS has the final lodged figures and is well placed to provide or process the closing information. But responsibility can be divided between the BAS agent, tax agent, bookkeeper and business according to the engagement.
The critical control is communication: who prepares the entry, who posts it, which date is used, who reconciles the ATO account and where the working papers are stored. Without that handover, a correct BAS can still leave an incomplete accounting file.
The balance sheet usually tells on the process.
Old GST balances remain
GST collected or paid accounts continue carrying amounts from already lodged periods.
The ATO balance never agrees
The bookkeeping control account cannot be reconciled to the ATO’s account activity.
Payments are coded inconsistently
Each BAS payment or refund is entered differently, leaving no repeatable audit trail.
Year-end journals are enormous
Several quarters are corrected at once because routine closing entries were never processed.
No one has the final BAS
The file contains drafts but not the lodged statement, receipt or supporting calculation.
Past periods keep changing
Transactions are edited after lodgment without review of the effect on the reported BAS.
BAS closing-adjustment FAQs
Does BAS lodgment automatically update Xero?🐰
No. Lodgment records the activity statement with the ATO. The accounting file still needs the documented closing treatment and reconciliation appropriate to its setup.
Do I need a closing journal after every BAS lodgment?🐰
Many bookkeeping systems use a closing journal each period because it clearly transfers the lodged amounts to an ATO control account. The exact method should follow the file design and agreed professional process.
Is it wrong to enter the BAS as an ATO bill?🐰
Not automatically. A bill-based process can work when it correctly clears the tax accounts and handles payments, refunds and offsets. It should be tested against the balance sheet and ATO reconciliation.
When should the BAS closing entry be dated?🐰
Practices vary between the reporting-period end and the lodgment date. Agree on a consistent policy with the BAS agent or tax agent and document it.
What happens when the ATO offsets a BAS refund?🐰
The offset should be recorded and reconciled rather than waiting for money to reach the bank. The ATO account activity provides the evidence for the entry.
Who should process the closing adjustment?🐰
The engagement should identify who prepares, approves, posts and reconciles it. The person lodging the BAS must provide the final lodged figures when another person completes the bookkeeping step.
Can missing closing adjustments affect the next BAS?🐰
Yes. Uncleared or unexplained balances can complicate later reconciliations and make it harder to identify genuine current-period adjustments.
Can old BAS periods be cleaned up?🐰
Yes. Gather the lodged statements, ATO account activity and bookkeeping ledgers, reconcile period by period and obtain advice before changing amounts that may affect previously lodged information.
Finish the BAS process while the working papers are still in front of you.
My Great Bookkeeper can review missing BAS closing entries, reconcile the ATO control account and establish a repeatable period-end process for your Xero file.
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