When a revision goes wrong¶

Sometimes you lodge an Activity Statement, then realise a figure was wrong. The fix is a revision — a corrected version of that same statement sent to the Australian Taxation Office (ATO). Most revisions go through without a hitch. But now and then something does not go to plan, and it is worth knowing why.

This lesson walks through the three problems people run into most: a period that is too old to revise, a revision that does not seem to have gone through, and revising the wrong period by mistake. None of them is a disaster, and each has a clear next step.

In one line

If a revision goes wrong, check whether it was accepted, confirm you picked the right period, and if the period is too old to revise, contact the ATO.

Why this matters¶

A revision is you telling the ATO "the real numbers were these." If it does not go through, or goes onto the wrong period, the ATO's records still show the old figures. Catching that early means you fix it once, calmly, instead of untangling it later.

What you will learn¶

How to check whether a revision was accepted by the ATO
What to do when a period is outside the revision window
How to avoid revising the wrong period

Understanding the concept¶

There is a set period during which you can revise a past statement. The ATO calls it the period of review. For most Activity Statements it runs for about four years, counted from the day after the ATO gives you the notice of assessment for that statement. Inside that window, you can lodge a revision yourself. Once it ends, the option to revise that period is normally switched off, and the ATO explains that the button to revise simply will not appear.

To see whether a revision went through, you look at its status. After you lodge, the ATO works through it and updates the status. When it is done, the statement shows as finalised, and amounts that have been applied to your account show as processed. If you cannot find any sign of your revision, that is usually a hint it did not reach the ATO — worth checking rather than assuming.

The third trap is picking the wrong period. Activity Statements come one after another — a run of quarters or months — and they can look almost identical. Revising the period next to the one you meant is an easy slip, and it leaves two periods wrong instead of one.

For accountants & bookkeepers

The period of review for indirect tax generally ends four years from the day after the notice of assessment is given. After it closes, the ATO will only amend in limited circumstances — for example, to give effect to a review request or amendment application already on foot. Where a client needs to correct a period that has fallen outside the window, the ATO's guidance is to contact them, and a paper revision may be issued. Confirm acceptance through the activity statement history and the account, rather than assuming a lodgment succeeded.

Example¶

Priya runs a small cafe and lodges quarterly. In July she realises the GST on one quarter from five years ago was overstated, and she wants to claw it back. She goes to revise it — but the option to revise that period is not there. That period is outside the roughly four-year window, so she can no longer revise it herself. Rather than give up, Priya contacts the ATO to explain, as the ATO's guidance suggests, and lets them tell her what is possible for a period that old.

Meanwhile Jordan revises last quarter to correct a wages figure. A week later he is not sure it worked, so he checks the statement's status. It shows as finalised and the change is on his account — so it went through, and he can stop worrying. Had it shown nothing at all, that would have been his sign to lodge the revision again.

Common mistakes¶

Assuming a revision worked without checking its status — always confirm it shows as finalised or processed.
Trying to revise a period that is too old, then giving up instead of contacting the ATO.
Revising the period next to the one you meant — check the exact dates before you lodge.
Lodging the same revision twice because the first "did not look like it worked," when it actually did.

How this works in myaccountant¶

In the app — when you open a past Activity Statement, myaccountant shows whether that period can still be revised, so you are not left guessing about the window. When you start a revision, the period you are correcting is shown clearly, which helps you avoid picking the wrong one. If a period is too old to revise, that is your cue to contact the ATO directly.

Key points¶

You can generally revise a statement for about four years — the period of review.
Once that window closes, revising that period is normally switched off.
If a period is too old to revise, contact the ATO about your options.
Check a revision's status to confirm it was accepted — finalised or processed.
If there is no sign of your revision, it likely did not go through.
Always check the exact period dates so you do not revise the wrong one.

Learn next¶

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

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