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Correcting GST errors and making adjustments on your business activity statements
If you identify a goods and services tax (GST) error for a previous period or on an already lodged business activity statement (BAS), there is always scope to make a correction.
The Tax Office has realized that it is necessary for businesses to be able to make these adjustments, which can easily come about because of a change of circumstances or facts. These can include:
If you become aware of a GST error or adjustment on an earlier activity statement, you can choose to correct that error or adjustment on a later activity statement. However there are certain conditions for adjustments set out by the Tax Office which can include, for example, a time limit.
For an error on which your business overstated its GST liability, the Tax Office imposes a four year time limit for making an adjustment, which is counted down from when the error was made (specifically, from the due date of the BAS that covers the period when the error occurred).
For errors on which not enough GST has been accounted for, there’s an added factor relating to the business’s turnover. For annual turnover of less than $20 million, the adjustment must be made within 18 months. More than that, and it must be made within 12 months.
It can generally be easier to correct a GST error on a later activity statement rather than revising the earlier activity statement. But being able to make an adjustment can be important to avoid liability to any penalties or general interest charge.
As adjustments relate to changed facts or circumstances, which will have an impact on the subsequent GST outcome of a transaction, the resulting change in need of an adjustment will generally have resulted in a business having either claimed too much GST, or not claimed enough.
Claiming too much GST
How does a business claim too much GST on a BAS? Whoever filled out the BAS could have:
Not claiming enough GST
Some situations in which this might be the case include where a business:
Tax Office has a guide on making adjustments to an activity statement which covers the types of GST errors, limits on correcting GST errors, how to correct a mistake on a later activity statement, and what is not classified as a GST error. Click here to go to the Tax Office guide.
Note however that the guide applies to GST errors that originated after May 10, 2013 (the date on which a Tax Office “determination”, or rule change, took effect). For adjustments related to statements before then, there is another guide which can be accessed here. Of course, see your tax professional for more tailored guidance.
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