part, while extending such benefits to some others was challenged before Madras High Court, on the plea of discrimination and violation of Article 14, besides challenging the constitutional validity of the statute. After considering the various provisions of the Statute, constitutional mandate and judicial precedents, a Division Bench of the Madras High Court, as per the decision in Advertising Club vs. Central Board of Excise & Customs ( 2001 (131) ELT 35 (Mad.) held that the challenge was unfounded and that the constitutional validity of a taxing provision was not to be decided on the basis of measure of tax, i.e., the deduction allowed. One of the learned Judges, who rendered the above decision had occasion to consider the scope of the said verdict in a subsequent case as well, while sitting in Division with another learned Judge in GDA Security Private Limited vs. Union of India [ 2002(140) ELT 332 (Mad.)], which was in respect of service tax to be satisfied by the Security Agencies. There also, the legislative competence was under challenge, referring to the fixation of liability based on the