Explanation:

 The term revenue neutral rate (RNR) will refer to that single rate, which preserves revenue at desired (current) levels. In practice, there will be a structure of rates, but for the sake of analytical clarity and precision it is appropriate to think of the RNR as a single rate. It is a given single rate that gets converted into a whole rate structure, depending on policy choices about exemptions, what commodities to charge at a lower rate (if at all), and what to charge at a very high rate. The RNR should be distinguished from the “standard” rate defined as that rate in a GST regime which is applied to all goods and services whose taxation is not explicitly specified. Typically, the majority of the base (i.e., majority of goods and services) will be taxed at the standard rate, although this is not always true, and indeed it is not true for the states under the current regime.

Committee headed by the Chief Economic Adviser Dr. Arvind Subramanian on Possible Tax rates under GST submited its Report to the Finance Minister; On the Revenue Neutral Rate (RNR), the Committee recommends the same in the range between 15 percent and 15.5 percent (Centre and states combined) with a preference for the lower end of that range based on the analysis made in the Report Because identifying the exact RNR depends on a number of assumptions and imponderables; because, therefore, this task is as much soft judgement as hard science; and finally also because the prerogative of deciding the precise numbers will be that of the future GST Council, this Committee has chosen to recommend a range for the RNR rather than a specific rate. For the same reason, the Committee has decided to recommend not one but a few conditional rate structures that depend on policy choices made on exemptions, and the taxation of certain commodities such as precious metals.