This summary clarifies the rule stipulated in Article 61 of the KSA VAT Implementing Regulations regarding currency conversion. It mandates that any amount relevant to VAT which is expressed in a foreign currency must be converted into Saudi Riyal (SAR). The conversion must use the official daily exchange rate prescribed by the Saudi Central Bank. The specific date for applying this rate is the date on which the tax becomes due, as determined by the Unified VAT Agreement for the GCC and the KSA Value Added Tax Law, ensuring a consistent methodology for non-SAR transactions.