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Vicious circle of poverty, causes of poverty and determination of BPL

Economic Theory and Public Finance · Unit III · Topic 8 of 17 · 5 min read

Nurkse's supply-side and demand-side circles, how the circle is broken, the causes of poverty in India, and how the poverty line has been drawn from the Task Force of 1979 to Rangarajan and the MPI.

On this page
  1. 1. The idea
  2. 2. Supply side of the circle
  3. 3. Demand side of the circle
  4. 4. Other circles
  5. 5. Breaking the circle
  6. 6. Causes of poverty in India
  7. 7. Determination of the poverty line (BPL)
  8. How this is examined
Cases checked to exist. Read the judgment before quoting a holding.

Every case cited here has been checked to exist — the citation resolves and names the right parties. The propositions attributed to each case have not been verified line by line against the judgment. Case names link through to the full judgment: read it before quoting a holding in an examination answer, and never carry a proposition from notes into court on trust.

The examinable core. “A country is poor because it is poor.” Draw the two circles (supply of capital, demand for capital), explain each link, and show how the circle can be broken. The BPL part asks how the poverty line is fixed: a minimum consumption basket, priced, set by successive expert groups.

1. The idea

Ragnar Nurkse, in Problems of Capital Formation in Underdeveloped Countries (1953), described a “circular constellation of forces tending to act and react upon one another in such a way as to keep a poor country in a state of poverty”. His example at the level of the individual: a poor man does not have enough to eat; being underfed, his health is weak; being weak, his working capacity is low, which means he is poor, which means he does not have enough to eat. For the economy, the circle works through capital formation.

2. Supply side of the circle

Low real income → low capacity to save → low saving → low investment → shortage of capital → low productivity → low real income.

The supply of capital is limited by the small capacity to save, which reflects the low level of real income. The low income in turn reflects low productivity, which is due largely to lack of capital.

3. Demand side of the circle

Low real income → low purchasing power → small market → low inducement to invest → low investment → shortage of capital → low productivity → low real income.

Even if savings were available, businessmen would not invest because the market is too small to make new production profitable. Nurkse’s shoe factory example: a factory making shoes will not be built where people are too poor to buy shoes.

Diagram in words. Two rings side by side, each a chain of boxes joined by arrows in a closed loop, both passing through “low real income” and “low productivity”.

4. Other circles

5. Breaking the circle

  1. Balanced growth (Nurkse, Rosenstein-Rodan): invest in many complementary industries at once, so each creates a market for the others. This attacks the demand side. (See balanced and unbalanced growth.)
  2. Raising saving: taxation, public borrowing, small savings schemes, and mobilising disguised unemployment (Nurkse saw surplus farm labour as a concealed saving potential).
  3. Foreign capital and aid to supplement domestic saving.
  4. Investment in human capital: health and education.
  5. Population control.
  6. Land reform and institutional change.
Criticism to add. P.T. Bauer argued the circle is too deterministic: today’s rich countries were once poor and broke out of it, and even poor households do save and invest (in land, cattle, gold). Poverty is also caused by institutions and policies, not by poverty alone. One paragraph of this turns a descriptive answer into a critical one.

6. Causes of poverty in India

7. Determination of the poverty line (BPL)

A poverty line is the level of income or consumption expenditure below which a person is considered poor. Persons whose monthly per capita consumption expenditure (MPCE) falls below it are said to live below the poverty line. In India the line has been drawn by expert groups of the Planning Commission:

GroupYearBasis
Task Force (Y.K. Alagh)1979Calorie norm: 2,400 kcal per person per day rural, 2,100 urban, converted into MPCE
Lakdawala Expert Group1993Same calorie baskets; State-specific lines updated by price indices
Tendulkar Expert Group2009Wider basket including health and education; uniform urban basket for rural and urban
Rangarajan Expert Group2014Food basket meeting calorie, protein and fat norms plus normative non-food items

By the Tendulkar method, the Planning Commission’s 2013 estimate put the poverty line for 2011–12 at MPCE of Rs. 816 (rural) and Rs. 1,000 (urban), and the poverty ratio at 21.9 per cent. The Rangarajan group’s higher lines (Rs. 972 rural, Rs. 1,407 urban) gave 29.5 per cent for the same year. The government did not formally adopt the Rangarajan line.

Identifying BPL households for schemes is a separate exercise from estimating the poverty ratio. It was done through BPL censuses by the Ministry of Rural Development using household scores on deprivation indicators, and later through the Socio-Economic and Caste Census 2011. NITI Aayog now also publishes a Multidimensional Poverty Index, based on the Oxford–UNDP method, which measures deprivation in health, education and standard of living rather than income alone.

How this is examined

“Vicious circle of poverty” is a regular short note (June 2025, August 2024); “Reasons for poverty” was the January 2026 short note. Write Nurkse’s sentence, draw both circles, give three ways to break them and Bauer’s criticism. If BPL is asked, give the meaning of the poverty line, the calorie basis, the table of committees, and the difference between estimating poverty and identifying BPL households.

Now try the real questions: Economic Theory and Public Finance past question papers.