Central Board of Excise and Customs website has info about customs, central excise, service tax, FTT/IATT, narcotics etc
Central Board of Excise and Customs (CBEC) is a part of the Department of Revenue under the Ministry of Finance, Government of India.
It has EASIEST, E-payment and GAR7 challans, Draft Circulars for comments, Defaulters of Customs & Central Excise, Customs, Central Excise and Service Tax Refund/Rebate claims etc
Web : http://www.cbec.gov.in/