Rennies Travel (Pty) Ltd operated a travel agency arranging international air travel. Its income streams included service fees charged to clients, standard commission from airlines for ticket sales, and supplementary commission payable by airlines when agreed sales targets were met. SARS conducted a VAT audit for the period February 2012 to December 2016 and issued additional VAT assessments, levying VAT at the standard rate on the supplementary commission. Rennies objected, contending that the supplementary commission constituted consideration for arranging international passenger transport and was therefore zero-rated under s 11(2)(a) and (d) of the VAT Act. The Tax Court upheld SARS’ view, holding that the supplementary commission related to marketing and promotion services. Rennies appealed to the Supreme Court of Appeal.