Article 194 mandates full compliance with the tax treatments prescribed for citizens (natural and legal persons) of the Gulf Cooperation Council (GCC). It specifically references the economic agreement signed in December 2001. This ensures that GCC nationals and their Omani-based investments are treated according to the established regional principles of non-discrimination and preferential economic integration. By formally incorporating these GCC treaty obligations into the Income Tax Law, Oman ensures that regional investors maintain their established rights and that Omani law remains aligned with its regional treaty commitments.