The applicants were trustees of the South African Red Cross Air Mercy Service Trust, a welfare organisation providing air ambulance and related services to provincial health departments. The South African Revenue Service (SARS) assessed the Trust as liable to pay Value Added Tax (VAT) on payments it received for actual services rendered to provincial health departments. The Supreme Court of Appeal held that these payments constituted taxable supplies under section 7(1) of the Value Added Tax Act 89 of 1991, and that the Trust was not exempt from VAT on those payments, although subsidies deemed to be supplies under section 8(5) could be zero-rated under section 11(2)(n). The trustees sought leave to appeal to the Constitutional Court, challenging both the VAT interpretation and the Supreme Court of Appeal’s reliance on SARS Interpretation Notes in construing the statute.