States that have huge mineral and petroleum reserves, but are economically backward may face significant loss of tax revenues on implementation of goods and services tax (GST), according to economists and experts in public finance. Introduction of GST would lead to the abolition of central sales tax (CST), which is collected by state governments on inter-state sales of goods. The CST rate was reduced from 4% to 2% at the time of introducing value added tax (VAT) in 2005.
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