What is goods and service tax

Goods and Service Tax is a tax on goods and services.

It is livable at each point of sale or provision of service.

At the time of sale of goods or providing the services the seller   or service provider can claim the input credit of tax which he has paid while purchasing the goods or procuring the service

This is simply very similar to VAT.

It can be termed as National level VAT on Goods and Services.

Only  difference  in this system is that not only goods but also services are involved.

The rate of tax on goods and services are generally the same.