Dear Shri. Sinha,
As per rule 2 A (b) of Service Tax (Determination of Value) Rules, 2006,
Value of works contract service shall include, -
(i) labour charges for execution of the works;
(ii) amount paid to a sub-contractor for labour and services;
(iii) charges for planning, designing and architect's fees;
(iv) charges for obtaining on hire or otherwise, machinery and tools used for the execution of the works contract;
(v) cost of consumables such as water, electricity, fuel used in the execution of the works contract;
(vi) cost of establishment of the contractor relatable to supply of labour and services;
(vii) other similar expenses relatable to supply of labour and services; and
(viii) profit earned by the service provider relatable to supply of labour and services;
The rule does not distinguish between cement and steel supplied by the service receiver or procured by the service provider. Therefore cost of cement and steel supplied by the employer (service receiver) is includible in the gross value charged by the service provider.
Though there are some decisions by CESTAT/High Court holding that value of free supply materials are not includible in the gross value charged by the service provider, these decisions relate to the period prior to 1.7.2012. Since the above-mentioned rule had come into effect on 1.7.2012 the rule will prevail. This is my opinion.