 The creamy layer (income) criteria were defined as gross annual income of parents from all sources more than 100,000 rupees (₹ or INR defined by Sattanathan committee in 1971) In 1993 when "creamy layer" ceiling was introduced, it was ₹ "1 lakh".It was subsequently revised to "Rs 2.5 lakh" per "annum" in (2004), and revised to ₹ 4.5 lakh (2008), Rs 6 lakh (2013) and Rs 8 lakh (2017).In October 2015, the National Commission for Backward Classes (NCBC) proposed that a person belonging to Other Backward Class (OBC) with gross annual income of parents up to Rs 15 lakh should be considered as the minimum ceiling for OBC.