Explain the difference between computing methodology of India’s Gross Domestic Product (GDP) before the year 2015 and after the year 2015.
Last Updated
26th June, 2026
Date Published
26th June, 2026
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Structure:
Introduction: Define GDP with data
Body: difference between computing methodology of India’s Gross Domestic Product (GDP) before the year 2015 and after the year 2015.
Conclusion: Give appropriate conclusion in this regard
Introduction
India's Gross Domestic Product (GDP) is a crucial measure of the country's economic health and development. Over time, the methodology for computing India's GDP has evolved to better reflect the changing economic landscape. Before the year 2015, India primarily used the factor cost method, while after 2015, the country shifted to the market price method
Before 2015
Factor Cost Method: Before 2015, India's GDP was computed using the factor cost method, also known as the production approach. This method calculated GDP by summing the value added at each stage of production across sectors, such as agriculture, manufacturing, and services.
Base Year: The base year for computing GDP was periodically updated to capture changes in the economy's structure and consumption patterns. However, the base year before 2015 was relatively outdated, leading to potential inaccuracies in GDP estimates.
After 2015
Market Price Method: Post-2015, India transitioned to the market price method, also known as the expenditure approach, for computing GDP. This method calculates GDP by summing the total expenditure on final goods and services, including consumption, investment, government spending, and net exports.
New Base Year: The introduction of a new base year for GDP calculation was a significant change. The base year was updated to reflect more recent economic data and consumption patterns, providing a more accurate representation of the economy.
Inclusion of Informal Sector: Efforts were made to improve the coverage of the informal sector in GDP estimates. New data sources and methodologies, such as surveys and satellite imagery, were introduced to capture economic activities more comprehensively.
The introduction of the Goods and Services Tax (GST) in 2017 had implications for GDP calculation. GST replaced multiple indirect taxes, making GDP estimation more accurate by reducing tax distortions and improving data availability.
Methodological Revisions: Methodological revisions were implemented to align India's GDP estimation practices with international standards. Changes included adjustments in the classification of economic activities, treatment of subsidies and taxes, and accounting for inflation and price changes.
Calculation of Labor Income
Pre-2015: All labour inputs were considered equal.
Post-2015: The new methodology introduced the concept of “effective labour input” and assigned different weights based on whether an individual was an owner, a hired professional, or a helper. This change aimed to provide a more nuanced assessment of labour income.
Value Addition in Agriculture
Pre-2015: Value addition in agriculture was limited to farm produce.
Post-2015: The new methodology expanded the scope of value addition in agriculture beyond farm produce. Livestock data became a critical component of the calculation.
Implications
Improved Accuracy: The shift to the market price method and the use of a more recent base year have enhanced the accuracy of GDP estimates. This ensures that GDP figures better reflect the true economic output of the country, leading to more informed policy decisions.
Better Representation of Informal Sector: Including the informal sector more comprehensively in GDP estimates provides a clearer picture of the economy. Policymakers can now understand the contribution of informal economic activities and design policies to support this sector more effectively.
Enhanced Comparability: The new methodology improves comparability of India's GDP with international standards. This allows for better benchmarking against global economic indicators and facilitates international cooperation and trade.
Conclusion
India's transition in GDP computing methodology from the factor cost method to the market price method has led to significant improvements in accuracy, representation of the informal sector, and comparability with international standards.
Government policies and initiatives, such as updating the base year, implementing GST, and revising the Economic Census, have played a crucial role in modernizing GDP estimation practices. These changes ensure that India's GDP figures reflect the true economic output of the country, enabling better policy formulation and decision-making.