Poverty Line Estimation — Basic Structure

Basic Structure

Poverty line estimation in India has evolved from simple calorie-based norms to complex consumption expenditure models. The Alagh Committee (1979) introduced calorie norms (2400 kcal rural, 2100 kcal urban).

The Lakdawala Committee (1993) introduced state-specific poverty lines using CPI-AL/IW. A significant shift occurred with the Tendulkar Committee (2009), which moved away from calorie norms, adopting a unified consumption basket for rural and urban areas, incorporating expenditure on health and education, and using a Mixed Reference Period (MRP).

This resulted in higher poverty estimates. The Rangarajan Committee (2014) further refined the methodology, proposing higher calorie norms, separate consumption baskets for rural and urban, and higher poverty lines than Tendulkar.

While no new official poverty line has been adopted since Rangarajan, the Tendulkar line is often referenced, and there's a growing focus on the Multidimensional Poverty Index (MPI) .

The poverty line is crucial for targeting government welfare schemes and is constitutionally linked to Article 47 (DPSP). It faces criticism for its unidimensionality, arbitrariness, and potential for exclusion/inclusion errors.

International comparisons use Purchasing Power Parity (PPP) to account for differing costs of living, with the World Bank's extreme poverty line currently at $2.15 PPP per day.

Important Differences

vs Tendulkar Committee vs Rangarajan Committee

Aspect	This Topic	Tendulkar Committee vs Rangarajan Committee
Year of Report	2009	2014
Basis of Estimation	Consumption expenditure on a basket including food, education, health, clothing, footwear (MRP-based)	Consumption expenditure on a basket including food (with higher calorie norms), education, health, clothing, footwear, conveyance, house rent
Calorie Norms	Moved away from explicit calorie norms as primary basis	Reintroduced modified calorie norms (2155 kcal rural, 2090 kcal urban) along with protein and fat
Consumption Basket	Unified consumption basket for rural and urban areas (though poverty line values differed)	Separate consumption baskets for rural and urban areas
Poverty Line (2011-12, per capita monthly)	Rural: Rs. 816; Urban: Rs. 1000	Rural: Rs. 972; Urban: Rs. 1407
Poverty Ratio (2011-12)	21.9%	29.5%
Price Index for Updating	Implicit price deflators from NSS consumption data (rural), CPI-UNME (urban)	CPI-AL (rural), CPI-IW (urban)

The Tendulkar Committee (2009) marked a significant departure by moving away from a purely calorie-based approach, adopting a unified consumption basket that included health and education, leading to a higher poverty count. The Rangarajan Committee (2014), while building on Tendulkar's expenditure-based approach, reverted to separate consumption baskets for rural and urban areas, reintroduced modified calorie norms, and proposed higher monetary poverty lines, resulting in a higher poverty ratio than Tendulkar's 2011-12 estimate. Vyyuha's analysis indicates that the key difference lies in the breadth of the consumption basket, the explicit reintroduction of calorie norms by Rangarajan, and the resulting higher monetary thresholds, reflecting a more generous definition of minimum living standards.

vs Calorie-Based vs Expenditure-Based Poverty Estimation

Aspect	This Topic	Calorie-Based vs Expenditure-Based Poverty Estimation
Primary Focus	Minimum nutritional intake (calories)	Monetary value of a basket of essential goods and services
Key Components	Primarily food items to meet calorie norms	Both food and non-food items (education, health, housing, transport, etc.)
Committees Associated	Alagh Committee (1979)	Lakdawala (1993), Tendulkar (2009), Rangarajan (2014)
Dimensionality	Unidimensional (focus on food/nutrition)	More multidimensional (incorporates broader aspects of living standards)
Flexibility	Less flexible, rigid calorie norms	More flexible, consumption basket can be updated to reflect changing needs and aspirations
Criticism	Too narrow, ignores non-food essentials, doesn't reflect true poverty	Arbitrariness of basket composition, data collection challenges, still doesn't capture all dimensions of poverty (e.g., access to public goods)

The calorie-based method, exemplified by the Alagh Committee, focused narrowly on meeting minimum nutritional requirements through food consumption. In contrast, the expenditure-based method, adopted by subsequent committees like Tendulkar and Rangarajan, broadened the scope to include the monetary value of a comprehensive consumption basket encompassing both food and essential non-food items like health and education. Vyyuha's analysis highlights that the shift from calorie-based to expenditure-based methods represents an evolution towards a more holistic and realistic understanding of poverty, acknowledging that well-being extends beyond mere caloric intake to include access to basic services and a dignified standard of living.