A taxpayer is responsible under self assessment to keep full and proper records in order to facilitate the preparation of a correct return. Whilst the Commissioner of Taxation will accept claims made by a taxpayer in an income tax return and issue a notice of assessment, usually without adjustment, the return may be subject to later review. Under the taxation law such a review may take place within a period of up to four (4) years after tax becomes due and payable under the assessment. Furthermore, where there is fraud or evasion there is no time limit on amending the assessment. Accordingly, you should check the return before it is signed to ensure that the information in the return is accurate.
Where the application of a taxation law to your particular circumstances is uncertain you also have the right to request a private ruling which will set out the Commissioner’s opinion about the way a taxation law applies, or would apply, to you in those circumstances. You must provide a description of all of the facts (with supporting documentation) that are relevant to your scheme or circumstances in your private ruling application. If there is any material difference between the facts set out in the ruling and what you actually do the private ruling is ineffective.
If you rely on a private ruling you have received, the Commissioner must administer the law in the way set out in the ruling, unless it is found to be incorrect and applying the law correctly would lead to a better outcome for you. Where you disagree with the decision in the private ruling you can lodge an objection against the ruling if it relates to income tax, fuel tax credit or fringe benefits tax. Your time limits in lodging an objection will depend on whether you are issued an assessment for the matter (or period) covered by the private ruling.