India's new GDP series: GST, corporate data drive new methodology
The statistics ministry detailed the methodology behind India's new GDP series, which shifts the base year from 2011-12 to 2022-23.
The revised methodology makes wider and more systematic use of GST returns and Ministry of Corporate Affairs (MCA21) corporate filings, including LLP records, to estimate private corporate sector output and to improve industry classification.
Direct assessments of the household and unincorporated sectors now draw on dedicated enterprise surveys rather than proxy estimation.
The new series was released with the base year press note, with back-series data (recasting historical GDP figures on the new base) to follow separately.
GDP Base Year Revision — Why and How MoSPI Rebases National Accounts
The base year of India's GDP series is the reference year against which real (inflation-adjusted) growth is measured, and against which the industry/expenditure structure of the economy is benchmarked. The Ministry of Statistics and Programme Implementation (MoSPI), through the National Statistical Office (NSO), revises the base year periodically to reflect a more recent "normal" year with robust, comprehensive data, and to incorporate new data sources and international System of National Accounts (SNA) methodology updates.
Key Details
- The base year was last revised from 2004-05 to 2011-12 in January 2015; the new series moves the base year to 2022-23, chosen as a recent post-COVID "normal" year with comprehensive data availability across sectors.
- The 2011-12 revision had itself introduced GVA at basic prices (replacing GDP at factor cost) and first incorporated the MCA21 corporate database in place of relying solely on the Annual Survey of Industries (ASI) for organised-sector estimation, following the 2008 System of National Accounts (SNA-2008) framework.
- MoSPI's New Series of GDP Estimates with Base Year 2022-23 continues this trajectory by deepening GST-based and MCA21-based estimation and introducing methodological refinements such as double deflation for manufacturing (replacing single deflation) and a Producer Price Index as the manufacturing deflator (replacing the Wholesale Price Index).
The methodology explained in this release is the latest in a series of periodic base-year revisions (2004-05 to 2011-12 to 2022-23), each expanding the data sources — most recently GST returns and deeper MCA21/LLP corporate records — used to estimate GDP.
GST Data and MCA21 as GDP Estimation Inputs
GST returns and the MCA21 corporate filings database are administrative data sources — collected for tax and regulatory compliance rather than statistical purposes — that the NSO now uses to cross-validate and, in some cases, directly compile GDP components, particularly for the private corporate sector and for allocating economic activity across states.
Key Details
- GST data supports the allocation of all-India private corporate sector estimates across states, is used for cross-validation of annual estimates, and plays a role in Quarterly National Accounts (QNA) compilation, where survey-based data is typically available with a longer lag.
- MCA21, maintained by the Ministry of Corporate Affairs, captures registered companies' (and now LLPs') annual financial filings; in the new series, MCA21 and LLP records are used not just for corporate output estimation but also to improve industry classification, since a company may be classified under one activity code even though it earns revenue from multiple activities.
- The new series allocates the value added of multi-activity corporations across their actual activities by revenue share, rather than assigning the entire value added to a single dominant activity code as under the earlier methodology.
This is the specific innovation the article highlights — using corporate filings and LLP records (not just headline company data) to more accurately classify which industry a firm's output belongs to, addressing a long-standing distortion in India's GDP estimation for diversified corporate groups.
Household and Unincorporated Sector Estimation — ASUSE and PLFS
Because India's unincorporated (informal) sector — proprietorships, partnerships, and household enterprises — does not file GST returns or corporate accounts in the same way, its contribution to GDP is estimated through dedicated statistical surveys rather than administrative data, unlike the corporate sector.
Key Details
- The Annual Survey of Unincorporated Sector Enterprises (ASUSE), covering unincorporated non-agricultural establishments in manufacturing, trade, and other services, and the Periodic Labour Force Survey (PLFS) are the primary survey instruments now used for direct assessment of this sector in the new series.
- This replaces the earlier practice (in the 2011-12 series) of using GST-linked proxies to estimate unorganised trade activity, which had been criticised for underrepresenting informal enterprises operating below the GST registration threshold.
- This sectoral distinction — organised/corporate sector estimated via MCA21 and GST cross-validation, versus unorganised/household sector estimated via direct enterprise surveys (ASUSE) and labour surveys (PLFS) — mirrors the classic three-way GDP compilation approach for the private sector: corporate, unincorporated (quasi-corporate/household), and general government.
The article's description of "surveys used for direct assessments of the household and unincorporated sectors" refers to this ASUSE/PLFS-based approach, which now runs alongside — rather than being substituted by — the GST/MCA21-based corporate sector methodology.
- New GDP series base year: 2022-23, replacing the 2011-12 base year series (itself introduced January 2015, replacing 2004-05).
- Nodal body: Ministry of Statistics and Programme Implementation (MoSPI), through the National Statistical Office (NSO).
- Key new/expanded data sources: GST returns, MCA21 corporate database (including LLP records), Annual Survey of Unincorporated Sector Enterprises (ASUSE), Periodic Labour Force Survey (PLFS).
- Key methodological changes: double deflation replaces single deflation for manufacturing; Producer Price Index replaces Wholesale Price Index as the manufacturing deflator; multi-activity corporate value added allocated by actual revenue share rather than to a single dominant activity.
- The 2011-12 base year series had first introduced GVA at basic prices and the MCA21 database, aligned with SNA-2008 recommendations.