Federal Commissioner of Taxation v Barton

The Federal Commissioner of Taxation appealed to the High Court against a decision of a Board of Review. The dispute concerned the validity of an income tax assessment issued to the taxpayer, Elsie Florence MacNeill Simpson, after a delay. The taxpayer had lodged a return with full disclosure, and after twelve months, requested the Commissioner to make an assessment under section 171 of the *Income Tax Assessment Act 1936-1947*. The Commissioner failed to issue the assessment within the subsequent three-month period stipulated by section 171(2). An assessment was eventually issued on 10 June 1948, which the taxpayer’s estate objected to on the grounds that the Commissioner was precluded from assessing after the three-month period had expired.

The primary legal issue before the High Court was whether the Commissioner was precluded by section 170(3) of the Act from making an assessment after the expiration of three months from the taxpayer's request under section 171(1), given that the taxpayer had made a full and true disclosure of all material facts. A secondary issue, which was subsequently abandoned by the Commissioner, concerned whether the taxpayer had a right of objection against the assessment.

The Court reasoned that section 171(2) contemplates that an assessment may be validly made after the expiry of the three-month period, deeming it an amended assessment for specific purposes. While this deeming provision gives the assessment a notional character, it does not require it to satisfy all conditions of section 170(2) or (3) in every respect. The Court held that the reference to a notional assessment in section 171(2) provides a sufficient basis for applying the time limitation imposed by section 170(3), which restricts amendments increasing liability except to correct an error in calculation or a mistake of fact. Crucially, the Court found that the notional assessment under section 171(2) does not preclude the application of the time bar in section 170(3), which allows for amendments within three years from the date tax became payable. As the assessment was issued within this time limit, it was competent.

The Court answered the first question in the case stated in the negative, finding that the Commissioner was not precluded from making the assessment. The second question was answered by noting that the right of objection was not contested by the Commissioner.