Government encourages for export of product and service and not export of taxes. Therefore , there is no taxes like VAT, CST,GST, excise duty and other indirect taxes on export of goods or service except some essential goods/ products.You have to pay Custom Duty Tax on export product if Your Product is covered under Second Schedule of Custom Duty Tariff Act , 1975 . Specifying the product nature/type and their applicable rate of tax . However if such good are mentioned in that tariff , consult a C.A for more information and their compliance. As per my knowledge , Only Basic Custom Duty are charged and NO Excise Duty) , VAT / CST/GST) etcHowever, the income earned through export is liable to Income tax except when the export is done through SEZ or export processing Zone.There are also various Income Tax benefit to S.E.Z business in terms of Tax Holidays , etcThere is also Duty Drawback (Credit for such Tax paid) i.e Basic Custom Duty is allowed as credit .Government is giving incentives to many product for exports like duty drawback, Merchandise Exports from India Scheme, Service from India.Except for the products mentioned in The Second Schedule of Export Tariff, no taxes are to be paid for exporting, rather taxes such as sales tax etc. are reimbursed by the govt. under the duty draw-back scheme , to promote exports.Income Tax is to be paid on the net income (net of all expenses and cost of goods exported, during the year, as per income tax rules) earned in the export transaction.Hope its helpful.