The report is published by World Inequality Lab, based at the Paris School of Economics, which aims to promote research on global inequality dynamics.
According to the report, since 1980, 27% of all new income worldwide was captured by the richest 1%, while the poorest 50% captured only 13% of growth.
It has highlighted the inequality prevailing in India and stated that the top 10% of the earners accounted for 56% of the income earned in 2014.
The report says that deregulation and opening-up reforms in India since 1980s have led to substantial increase in inequality.