The Goods and Services Tax (GST) regime may eventually rationalise tax rates into fewer slabs in a manner that items in the higher rate slab move downward and certain goods and services enjoying lower rates move to a higher slab. In an interview with Shishir Gupta and Rajeev Jayaswal of Hindustan Times, Revenue Secretary Ajay Bhushan Pandey said it will happen after the revenue stabilizes at comfortable levels.