Commissioner of Taxes (SA) v Executor Trustee and Agency Co of South Australia Ltd

The Commissioner of Taxes (SA) appealed to the High Court of Australia against a decision of the Supreme Court of South Australia concerning the assessment of income tax for a deceased medical practitioner, Hubert Cecil Carden. The dispute centred on whether outstanding book debts, representing fees earned but not yet received by the practitioner at the time of his death, should be included in his assessable income. The Commissioner sought to include these debts in an assessment for the period between the end of the last financial year and the date of death, and also in amended assessments for the two preceding financial years.

The legal issues before the High Court were whether the Commissioner had the authority under the *Taxation Act 1927-1935* (SA) to include the deceased's outstanding book debts in the assessment for the period from 1 July 1935 to his death on 15 November 1935, and whether amended assessments for the financial years ending 30 June 1934 and 30 June 1935, incorporating these book debts, were valid. Specifically, the court had to consider the application of sections 42, 43, 84, and 87 of the Act, and whether the deceased's practice of returning only actual cash receipts, omitting book debts, meant he had escaped full taxation in his lifetime.

A majority of the High Court, comprising Rich, Dixon, and McTiernan JJ., held that section 84 of the Act did not authorise the inclusion of unpaid fees earned before 1 July 1935 in the assessment for the period after that date. They also found that the Commissioner had no authority to issue amended assessments for the years ending 30 June 1934 and 30 June 1935 to include these book debts. This was because, for the 1934 year, section 42 did not apply as the period was more than twelve months prior to the preceding July, and the deceased had not failed to furnish a return. Furthermore, section 87 barred the Commissioner from reopening that assessment. For the 1935 year, the court determined that the receipts basis was the appropriate method for assessment, and therefore, there was no foundation for an amended assessment including book debts. However, the court affirmed that it was open to the Commissioner to adopt an earnings basis to ascertain the income earned between the end of the last financial year and the date of death. Latham C.J. dissented on these points.