A top authority mentioned that the GST Council might choose to diminish the assessment slabs under the Goods and Services Tax administration in the wake of investigating the income accumulated and the remuneration payouts to states. With industry requesting for bringing down of proposed GST rates of 5 , 12 , 18 and 28 percent post the demonetization, CBEC Chairman Najib Shah said the Centre and the states at present gather Rs 8 lakh crore from indirect charges, fewer custom duties, and a similar level of income must be gathered in the GST administration.