Tourvest Financial Services (Pty) Ltd, trading as American Express Foreign Exchange, is a licensed foreign currency dealer operating 52 branches countrywide with a centralised treasury division. The company conducts currency exchange operations where it buys and sells foreign currency at rates set by the treasury division, building in a margin. In addition to the margin, the company charges a commission (on which VAT is levied) based on a percentage of the transaction value. Prior to September 2013, Tourvest completed VAT returns applying an apportionment under s 17(1) of the VAT Act, accepting that relevant goods and services were acquired partly for taxable supplies and partly for exempt supplies. After receiving tax advice, Tourvest changed its position in September 2013, taking the view that goods and services obtained for branches were used wholly in making taxable supplies. Tourvest then claimed an input tax deduction of R24,389,036.58 for overpaid VAT over the prior five years, which SARS paid on 19 November 2013. After an audit on 5 April 2016, SARS issued an additional assessment adding back this amount, on the basis that apportionment of input tax was necessary as the goods and services were used for both taxable and exempt supplies. Tourvest's objection failed but its appeal to the Tax Court succeeded, and SARS appealed to the Supreme Court of Appeal.