Section 5(2)(b) in The Goa Value Added Tax Act, 2005
(b)The Government may, by notification published in the Official Gazette and subject to such terms and conditions as may be specified in this behalf, extend zero rate of tax for transactions effected from [Domestic Tariff Area] [Substituted by the Amendment Act 15 of 2005.] to Special Economic Zone or for 100% export oriented units or Software Technology Park units or Electronics Hardware Technology Park units or for any such manufacturing or processing units as it may deem fit.