The respondent companies traded in arranging and managing discounts for a chain of wholesale and retail supermarket and grocery outlets. On 1 January 1996, they sold their entire business as a going concern to Shoprite Checkers (Pty) Ltd for R21,000,000. During the 1996 tax year, the respondents did not carry on their normal trading activity. They received interest income from the purchase price held in trust and from an investment of R6,000,000 with Absa Bank. They also invested R9,000,000 interest-free in three Namibian companies with a view to developing a similar chain store organization in Angola. The respondents engaged in various activities exploring business opportunities in Angola and seeking to exploit wholesale liquor and firearm licences not sold to Shoprite Checkers, but no contracts were concluded and no income was earned from these activities. The respondents had accumulated assessed losses from previous tax years and sought to carry forward and set off these losses against the interest income earned during 1996. The Commissioner disallowed the set-off on the ground that the taxpayers did not carry on any trade and did not generate any income from trade in 1996.