How the ATO processes your Activity Statement¶

You have checked your figures and hit lodge. So what happens next? Your Activity Statement does not just vanish into the Australian Taxation Office (ATO). The ATO takes the amounts you reported, records them against your account, and works out where you stand.

This lesson walks through what happens after you lodge — in plain terms — so the period between lodging and hearing back is a lot less of a mystery.

In one line

Once you lodge, the ATO records your amounts, works out whether you owe money or are owed a refund, and over time checks what you reported against its own records.

Why this matters¶

After you lodge, it can feel like nothing happens. Knowing what the ATO does behind the scenes helps you understand your account balance, why a payment is due, and why the ATO might get in touch if a figure does not line up. It also explains why the wage and tax figures on your statement need to match what you reported through Single Touch Payroll (STP).

What you will learn¶

What happens after you lodge an Activity Statement
How the ATO checks your PAYG withholding against your STP reports
That the ATO may follow up if the figures do not line up

Understanding the concept¶

When you lodge your Activity Statement, the ATO records the amounts you reported. It then works out the balance — whether you owe the ATO money for the period, or the ATO owes you a refund. That balance goes onto your account, and if there is an amount to pay, a due date applies.

Processing is usually quick. For most businesses the statement is recorded soon after you lodge, and your account updates to show the result.

The ATO also reconciles what you reported. Reconcile just means "check that two sets of figures agree". Because every pay you run is reported to the ATO through STP, the ATO already holds your wages and the tax you withheld. It can compare the PAYG withholding you reported on your statement — the wages at label W1 and the tax withheld at label W2 — against the STP reports you sent across the period.

This checking is not only at lodgment. It continues over time, right through to the end of the financial year. When you finish the year, you make your STP finalisation — the step that tells the ATO your pay reporting for the year is complete. The ATO uses that finalised information as the full-year picture to check against, so the wages and tax withheld you reported across your statements should add up to what your finalised STP shows.

If the figures do not line up, the ATO may follow up — for example, asking you to check a statement or explaining that an amount looks different from your STP reports.

For accountants & bookkeepers

The ATO records the lodged labels, posts the net amount to the client's running balance account, and applies the payment or refund. W1 and W2 are reconciled against STP data for the period, and against the year-end finalisation. Where a later STP correction or a late report changes the period totals, the ATO's records and the lodged statement can diverge, which is what surfaces a mismatch. The ATO's position is that payroll records remain the primary source, so the reported figures should be brought back into line rather than left to differ.

Example¶

Jordan runs a landscaping business with two employees and lodges a quarterly BAS. Each fortnight the pay run is reported to the ATO through STP, so by the time the BAS is due the ATO already holds the quarter's wages and tax withheld.

Jordan checks the pre-filled W1 and W2 against the payroll summary, they match, and Jordan lodges. Within a short time the ATO has recorded the statement, worked out the amount owing for the quarter, and shown it on the account with a due date. Nothing else is needed — the wages and tax reported on the BAS agree with the STP reports the ATO already had, so everything lines up. At the end of the year Jordan makes the STP finalisation, and the year's figures reconcile cleanly.

Common mistakes¶

Thinking lodging is the end of it — the ATO still records the amounts, sets the balance, and checks the figures over time.
Assuming the ATO never looks at the detail — it reconciles your reported wages and tax withheld against your STP reports.
Ignoring a follow-up from the ATO — it usually means a figure does not match the STP reports and is worth checking.

How this works in myaccountant¶

In the app — after you lodge, myaccountant shows the status of your Activity Statement so you can see it has been lodged and processed. If a reported figure later turns out to be wrong, you can revise that statement from within the app.

Key points¶

After you lodge, the ATO records the amounts you reported.
It works out whether you owe money or are owed a refund, and sets the due date.
Processing is usually quick.
The ATO reconciles your reported wages and tax withheld against your STP reports.
The checking continues to your year-end STP finalisation.
If figures do not line up, the ATO may follow up.

Learn next¶

General information only — not tax, super or financial advice.

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