India's growth phases: theory applied

Detail

A. The theory used to read India's growth

• Harrod-Domar model (1940s): growth depends on how much a country saves and invests, and how well it uses that capital.
• Formula: g = s / v

• g = GDP growth rate. s = saving (investment) rate as a share of GDP. v = ICOR.

• ICOR (Incremental Capital-Output Ratio): the extra capital needed to produce one extra unit of output. ICOR = Investment ÷ Change in output (ΔK/ΔY).

• A high ICOR means capital is used badly, because more investment is needed for the same growth.

• Worked example: investment rate 30%, ICOR 4 → g = 30/4 = 7.5%. If the ICOR rises to 5 → g = 30/5 = 6%. The investment is the same, but growth is lower.

• Solow model (1956): capital alone runs into diminishing returns (each extra machine adds less output than the one before). Long-run growth comes from technology and efficiency.

• Growth accounting: g(Y) = α·g(K) + (1−α)·g(L) + g(A)
• g(A) is TFP (Total Factor Productivity): output growth that more capital and more labour do not explain. It comes from better technology, skills and institutions.

• Worked example: α = 0.4, capital grows 8%, labour grows 2%, GDP grows 6.5%. Then 0.4×8 + 0.6×2 = 4.4%, so TFP = 6.5 − 4.4 = 2.1%.

• Business cycle: the rise and fall of GDP around its long-run trend. It has four phases: expansion → peak → contraction (recession) → trough → recovery.

• Deficient demand (Class 12): aggregate demand (total spending) falls below the output the economy can produce at full employment. Firms then cut output and jobs. The Great Depression of 1929 is the classic example (Class 12, Introduction). COVID-19 in 2020-21 was a modern case.

B. Phase 1 — 1950-80: the "Hindu rate of growth"

• Growth was about 3.5% a year, called the "Hindu rate of growth" (a slow, steady rate that seemed stuck).
• Harrod-Domar reading: planners pushed up investment, mainly public investment in heavy industry. Growth stayed low because the ICOR was high.
• Solow reading: TFP was low under the licence raj (a firm needed a government licence to start, expand or change production).
• There was little competition, and technology stayed old.
• Capital was used inefficiently.

C. Phase 2 — 1980s: faster, but borrowed

• Growth was 5.6% (1980-91; Class 11, LPG: An Appraisal, Table 3.1).
• The cause was partial liberalisation (some controls on industry and imports were loosened).
• The catch: it was debt-financed.
• The government spent more than it earned, and India borrowed abroad.
• Foreign exchange reserves ran low.

• This ended in the 1991 BoP crisis. A balance of payments (BoP) crisis happens when a country cannot pay for its imports or repay its foreign debt.

• Theory lesson: growth built on demand from borrowing is not sustainable. It rises, then collapses, like the boom-and-bust shape of a business cycle.

D. Phase 3 — after 1991: services-led growth

Sector (Table 3.1, %)	1980-91	1992-2001	2002-07	2007-12	2012-13	2013-14	2021-22
Agriculture	3.6	3.3	2.3	3.2	1.5	4.2	4.8*
Industry	7.1	6.5	9.4	7.4	3.6	5.0	12.7*
Services	6.7	8.2	7.8	10.0	8.1	7.8	9.2*
Total	5.6	6.4	7.8	8.2	5.6	6.6	9.4

*GVA (Gross Value Added): the value of output minus the value of the inputs used up. GDP = GVA + product taxes − product subsidies.

• Services grew fastest. Services grew 10.0% in 2007-12, the peak.
• Agriculture slowed. It fell to 2.3% in 2002-07 and 1.5% in 2012-13.
• 2002-12 boom: growth of 7.8% (2002-07) and 8.2% (2007-12). This was the highest run in Indian history up to then, and it was the expansion phase of the cycle.

E. 2012-14 slowdown and the Twin Balance Sheet (TBS) problem

• Growth fell from 8.2% (2007-12) to 5.6% (2012-13). Industry fell to 3.6%.
• Twin Balance Sheet problem (Economic Survey 2016-17): the financial positions of Public Sector Banks (PSBs) and some large corporate houses were both damaged at the same time [4].
• Companies had borrowed too much in the boom. When things went wrong, they could not repay.
• Banks were left with NPAs (Non-Performing Assets): loans on which interest or principal is overdue for more than 90 days.

• Weak banks lent less. Indebted companies invested less.

• Causes: unexpected changes in the economy. Project timetables, exchange rates and growth assumptions all went wrong [4].

• Size of the damage: in many large stressed companies, debt had to be cut by more than 50% to make them viable again [4].
• The Survey called TBS the major barrier to private investment [4].
• Harrod-Domar reading: investment (s) fell and the ICOR (v) rose, so g = s/v fell on both counts.
• Illustration: s falls from 34% to 31% and v rises from 4 to 5 → g falls from 8.5% to 6.2%.

F. 2016-20 slide, the COVID contraction and recovery

• 2016-17 to 2019-20: growth slid from 8.3% to 3.9%. This was a downswing even before COVID.
• 2020-21: contraction of −5.8% (2011-12 series). NCERT's Class 11 exercise table prints "5.8". The correct figure is −5.8%.
• Lockdowns hit supply (factories shut) and demand (incomes and spending fell).

• This was deficient demand in the Keynesian sense, and it was the trough of the cycle.

• 2021-22: 9.4% per NCERT (later revised).

• Base effect: growth looks high because the previous year's GDP was low.

• Worked example: GDP was 100 in 2019-20. It fell 5.8% to 94.2 in 2020-21. It then grew 9.4% to 94.2 × 1.094 = 103.05 in 2021-22. So GDP was only about 3% above the pre-COVID level after two years.

• 2024-25: real GDP growth was 6.5% and nominal GDP growth 9.9% (old 2011-12 series) [5]. The IMF projected 6.5% for both 2024-25 and 2025-26 [6].

G. The new GDP series (base year 2022-23)

• Base year: the year whose prices are used to measure "real" (inflation-adjusted) GDP. MoSPI released the new series with base year 2022-23 on 27 February 2026. It replaced the 2011-12 base and uses new methods and new data sources [3][2].
• Second Advance Estimate (Feb 2026): real GDP growth in 2025-26 was 7.6% [3]. This is the scaffold figure.
• Provisional Estimate (5 June 2026, latest): real GDP growth in 2025-26 is 7.7% (NCERT scaffold: about 7.6%) [2].
• Growth under the new series: 7.2% (2023-24), 7.1% (2024-25), 7.7% (2025-26) [2].
• Real GDP was ₹323.12 lakh crore (2025-26), up from ₹299.89 lakh crore (2024-25) [2].
• Nominal GDP was ₹346.36 lakh crore (2025-26), a rise of 8.9% [2].
• Real GVA grew 7.9% (2025-26) [2].
• By sector: secondary 8.8%, tertiary 9.3% and primary 3.2% (2025-26) [2].
• Manufacturing, trade-hotels-transport-communication, and financial-real estate-professional services each grew in double digits (2025-26) [2].
• Demand side: PFCE (Private Final Consumption Expenditure, i.e. household spending) and GFCF (Gross Fixed Capital Formation, i.e. investment in machines, buildings and infrastructure) both grew more than 7.5% (2025-26) [2].

• Q4 2025-26: GDP 7.8%, GFCF 10.8%, PFCE 7.1% [2].

• Size: India is the fourth-largest economy (IMF WEO, April 2025). Its nominal GDP was projected at $4.187 trillion (2025), just above Japan's $4.186 trillion [5]. It is on track to be third-largest by 2030, with a projected $7.3 trillion GDP [5]. (Verify against the current WEO.)

H. International comparison (Class 11, Table 8.2, GDP growth %)

Country	1980-90	2015-17	2024
India	5.7	7.3	6.5
China	10.3	6.8	5.0
Pakistan	6.3	5.3	3.1

• In the 1980s India was last of the three. By 2024 it was the fastest.
• Table 8.4 (sources of growth): China grew through both manufacturing and services. India grew mainly through services.
• Theory reading: China's very high investment and rapid industrialisation fit the Harrod-Domar path. As its capital stock grows, diminishing returns (Solow) slow its growth down.

I. Debates

• Critique of reforms (Class 11, LPG: An Appraisal):
• Growth was concentrated in services (telecom, IT, finance, real estate) and among high-income groups.
• Jobless growth: GDP rose, but too few jobs were created.

• Farm distress: less public investment, costlier inputs and competition from imports.

• Trickle-down economics: the idea that gains for the rich and big firms reach the poor over time, through jobs, spending and investment.

• Critics point to rising inequality and weak labour absorption (the modern sectors hire few workers).

• Inclusive growth (Eleventh Plan onward): growth whose benefits spread across jobs, regions and social groups.

• Investment-led vs consumption-led growth:
• The government has pushed public capex (capital expenditure on roads, railways and other assets), but private investment has stayed weak.
• Household saving has fallen, which limits growth driven by consumption.

• In 2025-26, both PFCE and GFCF grew more than 7.5% [2].

• Is about 7% potential growth enough? Potential growth is the fastest rate the economy can sustain without pushing up inflation. Viksit Bharat 2047 needs 7.5-8% a year for about two decades. That needs:

• A higher investment rate (raise s).
• A lower ICOR (use capital better, i.e. lower v).
• Faster TFP growth (Solow).
• Using the demographic dividend (a large share of working-age people).
• The World Development Report (WDR) 2024 "3i" route to avoid the middle-income trap. This trap is when a country's growth stalls before it becomes rich. The WDR 2024 says 108 developing countries, India among them, face this risk [7][8].
  • 1i (low-income countries): Investment [7].
  • 2i (lower-middle-income countries, like India): Investment + Infusion, meaning adopting modern technologies and business methods from abroad and spreading them across the economy [7].
  • 3i (upper-middle-income countries): Investment + Infusion + Innovation, meaning pushing the global frontier of technology [7].
• Worked example (Harrod-Domar): to grow at 8% with an ICOR of 4, India needs to invest 8 × 4 = 32% of GDP. If the ICOR drops to 3.5, it needs only 28%.

Prelims Hooks

• Harrod-Domar: g = s/v, where v = ICOR = ΔK/ΔY. A higher ICOR means lower growth for the same investment.
• Solow (1956): long-run growth per worker comes from technology/TFP, not from adding capital, because capital faces diminishing returns.
• "Hindu rate of growth" = about 3.5% (1950-80). Do not confuse it with the 1980s rate of 5.6%.
• Twin Balance Sheet problem was named in Economic Survey 2016-17. The two sides are PSBs and large corporates, not the government and households.
• 2020-21 growth was −5.8% (a contraction, 2011-12 series). NCERT's table wrongly omits the minus sign.
• New GDP base year = 2022-23, released by MoSPI/NSO on 27 February 2026. The earlier base was 2011-12.
• 2025-26 real GDP growth = 7.7% (Provisional Estimate, 5 June 2026). The Second Advance Estimate was 7.6%.
• GDP = GVA + product taxes − product subsidies.
• WDR 2024 (World Bank): 1i → 2i → 3i = Investment → + Infusion → + Innovation. Lower-middle-income countries such as India should follow 2i.
• India vs China (Table 8.4): India grew mainly through services. China grew through manufacturing and services.

Mains Points

• Using theory to explain India's phases: Harrod-Domar explains the post-1950 investment push. The high ICOR explains why growth stayed at 3.5%. A rising ICOR plus the twin balance sheet problem explains 2012-14. Solow shows that growth after 1991 came from TFP gains (competition, technology), and that Viksit Bharat depends on TFP, not on capital alone.
• Quality of growth: services-led, jobless growth, farm distress and rising inequality challenge the trickle-down model. Inclusive growth needs labour-intensive manufacturing, higher farm productivity and skilling to turn the demographic dividend into jobs.
• The investment dilemma: public capex supported the recovery after COVID. Lasting growth of 8% needs private investment of about 32% of GDP or more at an ICOR near 4, healthy bank and corporate balance sheets (the lesson of TBS), and a revival of household saving.
• Business-cycle caution: the 1980s debt-led boom (which ended in the 1991 crisis) and the 2021-22 base-effect rebound show that one year's high growth is not the same as a higher trend. Policy should judge growth over several years and against the pre-shock level.