Article 12 of the KSA Value Added Tax Law delegates authority to the Implementing Regulations to define the specific terms and conditions for revenue aggregation. This rule applies to Related Persons who conduct similar or related business activities. The primary purpose of this aggregation is to determine the liability for mandatory VAT registration. The registration requirement will be assessed based on the total combined revenue of these related entities. The Regulations will further clarify the precise mechanism for this process, outlining whether each person must register individually or if they are to be registered on a collective basis.