sorry for asking wroung question. please tell me about vat tax?

Answer 1

Wrong questions can't have right answers please ! There is no such tax - what you are calling "vat tax". Vat itself mean Value added Tax.

Answer 2

Value added tax (VAT) is tax on exchanges. It is levied on the value added that results from each exchange. It differs from a sales tax because a sales tax is levied on the total value of the exchange. For this reason, a VAT is neutral with respect to the number of passages that there are between the producer and the final consumer. A VAT is an indirect tax, in that the tax is collected from someone other than the person who actually bears the cost of the tax (namely the seller rather than the consumer). To avoid double taxation on final consumption, exports (which are, by definition, consumed abroad) are usually not subject to VAT or VAT which led to such consequences is refunded.