Article 26 stipulates that the Value of Supply is the consideration received, excluding VAT. It includes all expenses the supplier imposes on the customer, ancillary fees, and other taxes like Excise Tax. Any non-cash consideration is valued at its fair market value, defined as the price between independent parties. For Deemed Supplies and intra-GCC goods transport, the value is the purchase price or cost; otherwise, it is the fair market value. The value is reduced by price discounts, government subsidies paid to the supplier, and specific reimbursements. Foreign currency amounts are converted using the official exchange rate on the tax due date.