Mukuru Africa (Pty) Ltd, a registered VAT vendor, supplies both taxable and exempt services, including money transfers and bureau de change services. Because it makes mixed supplies, it is required under section 17(1) of the Value-Added Tax Act 89 of 1991 to apportion input VAT. From commencement of business on 1 February 2014, Mukuru applied the standard turnover-based (STB) apportionment method prescribed in Binding General Ruling 16 (BGR16). In February 2017, Mukuru applied to SARS for approval to use an alternative transaction count (TC) method with retrospective effect from 1 February 2014. SARS approved the TC method only from 1 March 2016, taking the view that proviso (iii) to section 17(1) prohibited retrospective approval beyond that date. Mukuru objected and ultimately appealed to the Tax Court, which dismissed its appeal. Mukuru then appealed to the Supreme Court of Appeal.