Advocating for dual GDP series, former chief statistician Pronab Sen argues that accurate double deflation is contingent upon extensive data on input and output prices. Following India's introduction of a new GDP series, unease surrounding the growth figures and protocols for the back series has surfaced, leading to an expected release from the NSO by December 2026.

The government has brought in new producer price index, banking services price index and additional administrative data.

India's statistics ministry defended its latest GDP growth figures. The ministry cited improved data sources and methodologies for the estimates. It explained the GDP deflator…