This paper is concerned with four aspects in the implementation of Article VI on domestic regulation in the General Agreement on Trade in Services (GATS). First, the need to reach a better understanding of the scope of the GATS existing disciplines, particularly, the national treatment and the transparency rule. Secondly, the feasibility of the necessity test to reach the Article VI objectives. Third, the assessment of the international standard’s role in the facilitation of the trade. Fourth, the desirability to evaluate the sectoral testing exercises to determine whether the principles and disciplines developed are relevant and adaptable to other sectors. For GATS domestic regulation development, the mentioned factors are crucial accompaniment to future liberalization of services trade and to fulfil Article VI mandate. Whether this progress can be achieved within a time frame consistent with the duration of the current negotiations remains to be seen.