Introduction

India revised its GDP calculation methodology in 2015 to align with global standards. This shift, based on System of National Accounts (SNA) 2008, introduced new data sources and metrics for enhanced accuracy and international comparability.

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1.Base Year Update

Before 2015: Base year was 2004-05, using outdated economic structures.

After 2015: Base year changed to 2011-12, reflecting contemporary economic realities.

2.Shift to GVA (Gross Value Added)

Before 2015: GDP was calculated using the factor cost method, which excluded indirect taxes and subsidies.