Amending your tax return
'Amendment' is the term we use for a change made to an income tax assessment. If you want us to change your income tax assessment you need to request an amendment in writing.
Amendments are part of the self-assessment system. That is, just as we accept your tax return information at face value, in most cases we do the same with the information you provide on your request for an amendment.
Time limits for making amendments
There are time limits for making amendments to your tax return, generally two years for small businesses and four years for other taxpayers. To give you certainty about your tax affairs, in most circumstances the law does not allow amendments (initiated by us or by you) outside the time limit, but you may be able to lodge an objection instead.
Special rules vary these time frames for certain decisions AusIndustry or Innovation Australia makes in relation to the R&D tax incentive. These special rules allow us to amend outside of the standard timeframes in relation to:
- Innovation Australia giving the Commissioner a finding, within certain timeframes, about registration, activities outside Australia, or core technology
- an internal review decision by AusIndustry (on behalf of Innovation Australia), by the Administrative Appeals Tribunal (AAT), or by a court on certain matters.
How to amend your claim
If you wish to amend your claim for the R&D tax incentive you will need to:
- complete and lodge an amended R&D tax incentive schedule for the relevant year, showing the amended figures; and
- write us a letter to go with the amended schedule, requesting the amendment and specifying the labels on the company tax return that need amending.
You must then forward your amended R&D tax incentive schedule and the letter requesting the amendment to:
Australian Taxation Office
PO Box 3004
PENRITH NSW 2740
If you need to correct or vary your tax return because you made a mistake or omitted to mention something you later realise you should have mentioned, you can amend your tax return (within certain time limits).