This document summarizes the evolution of central planning authorities in India from the National Planning Committee in 1938 to the current NITI Aayog established in 2015. It outlines the key functions and organization of the Planning Commission from 1950-2014, including its 11 departments, focus on 5-year plans, and allocation of funds to flagship programs. It then discusses the rationale for replacing the Planning Commission with NITI Aayog, including allowing for more state-level involvement and a shift away from top-down decision making. The organization and members of NITI Aayog are also summarized.