In India, the poverty line is estimated mainly using household consumption (spending) data to find the minimum level of monthly per‑person expenditure needed to meet basic needs like food, clothing, shelter, education, and health.

Basic idea: what is “poverty line”?

  • The poverty line is a cutoff level of per‑capita consumption or income. If a person’s (or household’s) monthly expenditure is below this level, they are treated as “Below Poverty Line (BPL)”.
  • India uses different poverty lines for rural and urban areas because prices, needs, and living costs differ.

Step‑by‑step: how it is estimated

  1. Decide a minimum consumption basket
    • Experts first define a basket of goods and services that represents a basic standard of living: food (calories, proteins, fats), plus non‑food items like clothing, rent, fuel, transport, education and health.
 * Earlier committees focused heavily on a minimum calorie norm; later ones moved to a broader consumption‑needs approach.
  1. Collect data through large surveys
    • The National Sample Survey Office (NSSO, now NSO) under the Ministry of Statistics regularly conducts large household consumption expenditure surveys across the country.
 * These surveys record how much each sampled household spends on dozens of items in a month (or year), both in rural and urban areas, state by state.
  1. Fix a poverty line in per‑capita terms
    • Using the survey, statisticians identify the level of monthly per‑person expenditure that just allows purchase of the minimum consumption basket in rural and urban areas.
 * This produces a rupee figure per person per month (for example, older official lines like around ₹27–33 per day, and later higher values suggested by committees).
  1. Adjust for price differences and inflation
    • Prices vary across states and between rural and urban regions, so the national poverty line is adjusted with state‑specific price indices to get separate poverty lines for each state and sector.
 * Over time, these lines are updated using price indices (inflation) so that the “real” purchasing power of the poverty line remains comparable from one year to another.
  1. Count how many people fall below it
    • Once the per‑capita poverty line is fixed, every person whose consumption is below that figure is counted as poor; the headcount ratio (poverty rate) is the percentage of such people in the total population.
 * These estimates are then used by NITI Aayog and other government bodies to track poverty and design schemes.

Key committees and methods (brief)

  • Tendulkar Committee (2009)
    • Shifted focus from only calories to a broader consumption basket including health and education.
* Recommended poverty lines that worked out to roughly ₹27.2 per person per day in rural areas and ₹33.3 per person per day in urban areas at 2011–12 prices, which became the basis for official estimates.
  • Rangarajan Committee (2014)
    • Re‑examined the basket and argued the earlier lines were too low, so it proposed higher poverty lines (for example, about ₹972 per person per month in rural areas).
* This method gave a higher poverty ratio, indicating more people in poverty compared with Tendulkar’s line.
  • Recent practice
    • Official poverty discussions in India still largely reference the Tendulkar line, though there is ongoing debate and academic work using alternate, often higher, lines.
* Internationally, the World Bank’s global extreme poverty line (like the updated 2.152.152.15–3.003.003.00 USD per day at PPP) is also used to compare India with other countries.

Why there is controversy

  • Many economists argue that the official poverty lines are too low to represent a decent standard of living and leave out people who are vulnerable but just above the line.
  • Critics also point out that using only consumption misses other dimensions such as access to quality education, healthcare, sanitation, and security; this has led to calls for more “multidimensional” poverty measures.

In forum‑style debates, you’ll often see people say:
“If the poverty line is set unrealistically low, government can claim poverty is falling fast, even though everyday hardship is still widespread.”

Quick recap in simple points

  • India estimates the poverty line mainly from household consumption data , not just income.
  • A minimum basket of essential goods and services is defined; its cost per person per month becomes the poverty line for rural and urban areas.
  • Large national surveys collect spending data, which is then adjusted for state‑wise prices and inflation.
  • People spending below that line are counted as poor; this share gives the official poverty rate.
  • Committees like Tendulkar and Rangarajan proposed different methods and thresholds, and their choices strongly affect how many poor people India officially records.

Information gathered from public forums or data available on the internet and portrayed here.