works contract tax under vat

Limted knowledge shared here

VAT is applicable on works contract in tamil nadu we have distinction between civil and non civil  and rates are designed accordingly

Service tax applicable on works contract one kind of valuation is on the entire bill 70%  value is taken for charging service tax and 70% value is taken for computing vat 

TDS is applicable under 194c for labour portion based on the threshold limit applicable 

no idea about west bengal tax  but generally input credit is not available for VAT as well as Service tax