Adelaide Electric Supply Co Ltd v Federal Commissioner of Taxation

The High Court of Australia heard appeals from the Federal Commissioner of Taxation concerning assessments for war-time company tax. The taxpayer, Adelaide Electric Supply Company, was a company incorporated in Great Britain carrying on business in Australia. The dispute centred on how the company's paid-up capital, expressed in sterling, should be treated for the purposes of calculating the "capital employed" under the War-time (Company) Tax Assessment Act 1940-1944.

The primary legal issue before the Court was whether the paid-up share capital of an English company, expressed in sterling, should be converted into Australian currency at the prevailing rate of exchange when calculating the capital employed for the purpose of the war-time company tax. A secondary issue concerned whether certain amounts, specifically unread meter recordings and preliminary expenses, should be included in the credit of the profit and loss account for the purpose of calculating accumulated profits.

Dixon J. reasoned that for the purposes of Australian taxation, all monetary amounts must be expressed in Australian currency. He held that the paid-up capital of the English company, being a liability expressed in sterling, must be converted into Australian currency at the rate of exchange applicable during the relevant accounting periods to determine the capital employed. This conversion would increase the nominal amount of the capital by twenty-five per cent, reflecting the difference between sterling and Australian pounds. However, he found that capital subscribed in Australian pounds, specifically £625,000 issued in 1935, 1937, and 1939, should not be converted. Regarding the secondary issues, the Court determined that the profit and loss account, as prepared by the company, was determinative, and the Commissioner's previous practices or the company's later objections did not permit retrospective alteration of these accounts for tax assessment purposes.

The appeals were allowed, with declarations made regarding the conversion of paid-up capital into Australian currency. The assessments were remitted to the Commissioner for re-assessment in accordance with the Court's order, with liberty to apply.