Public debt: burden, Ricardian equivalence, crowding out and sustainability

Detail

1. Deficits and debt: flow vs stock

• Three ways to pay for a deficit:
• taxation (take more from people now);
• borrowing (sell bonds and repay later);
• printing money (the central bank creates new money).

• Governments mostly borrow.

• Public debt is the total borrowing the government still owes at a point in time. It is a stock.

• Deficit is the extra borrowing in one year. It is a flow. Each year's deficit adds to the stock of debt.

• Example: debt at the start of the year = ₹100 lakh crore. Fiscal deficit that year = ₹15 lakh crore. Debt at year-end ≈ ₹115 lakh crore.

• Debt snowball (debt feeding on itself):

• old debt → interest must be paid → interest is spending, so the deficit rises → more borrowing → bigger debt → even more interest next year.

• Example: debt ₹100 at 8% interest → ₹8 interest. If the government borrows to pay it, debt becomes ₹108. Next year's interest is ₹8.64.

• Government ≠ trader:

• A trader must repay from their own income.
• A government can tax and can print money, so its debt can't be judged like a household's.

• NCERT: "the whole must be treated differently from the part".

• Current anchor:

• Union Budget 2026-27 uses the debt-to-GDP ratio as its main fiscal anchor, meaning the main target that guides policy.
• The fiscal deficit is the operational target, meaning the number managed year to year. [2]
• Fiscal deficit: 4.3% of GDP (2026-27 BE); 4.4% (2025-26 RE). [2]

2. Is public debt a burden?

• Burden of debt argument:
• Future generations pay:
  • Bonds are sold today and repaid, say, 20 years later.
  • The money comes from taxes on the young at that time.
  • Their disposable income (income left after taxes) falls, so they consume less.
• Less private capital:
  • Government borrowing uses up savings that private firms could have borrowed.
  • Private capital formation (new factories, machines, roads) falls, and so does growth.

• Clash with intergenerational equity:

  • Intergenerational equity means fairness between present and future generations.
  • It is an explicit objective of the FRBM Act 2003.

• Counter-argument: "we owe it to ourselves"

• Domestic debt is held by Indian citizens, banks and institutions.
• Repayment moves money from Indian taxpayers to Indian bondholders.

• Resources shift between generations, but purchasing power stays inside the nation.

• External debt is a definite burden:

• Interest and principal owed to foreigners must be paid in foreign currency.
• This means real goods must be sent abroad as exports.
• Data:
  • India's external debt was US$ 762.8 billion at end-March 2026.
  • That is 20.8% of GDP, up from 19.8% at end-March 2025. [3]
• Sovereign share is small:
  • General government (Centre + states) owes only US$ 167.5 billion (22.0%).
  • The other 78.0% is owed by non-government borrowers such as companies and banks. [3]
• Buffers:
  • Forex reserves cover 90.6% of external debt (end-March 2026).
  • Debt service (repayments plus interest) was 5.8% of current receipts in 2025-26, down from 6.6% in 2024-25. [3]
  • Short-term debt is 19.6% of the total. [3]
  • US dollar debt makes up 55.5%, so a weaker rupee raises the burden. [3]

3. Ricardian equivalence

• Traditional (Keynesian) view:
• The government cuts taxes and covers the gap by borrowing (a deficit).
• People feel richer and spend more, so demand rises.

• Why? Consumers are short-sighted. They ignore future taxes, or they expect someone else to pay them.

• Ricardian equivalence (idea from David Ricardo, revived by Robert Barro in 1974):

• Consumers are forward-looking. They plan for the future.
• The family is a dynastic unit, a chain of generations where parents care about their children's welfare.
• People know that borrowing today = taxes tomorrow, so they save the whole tax cut to pay the future tax, or leave it to their heirs.
• Private saving rises by exactly as much as government saving falls. National saving does not change, and neither does demand.

• "Equivalence" means financing spending by borrowing has the same effect as financing it by taxation.

• Worked example:

• The government cuts your tax by ₹1,000 this year.
• It borrows ₹1,000 at 8% and will tax you ₹1,080 next year to repay.
• Present value (today's worth of a future amount) of the future tax = 1,080 ÷ 1.08 = ₹1,000.

• A Ricardian household saves the full ₹1,000, so consumption does not change.

• Limits (why it fails in practice):

• Myopia: people don't look far ahead.
• Liquidity constraints: poor households can't borrow or save even if they want to, so they spend any tax cut. This matters a lot in India.
• Finite horizons: not everyone has heirs, or cares about them.
• Exam link: where Ricardian equivalence fails, deficits do change demand. That is why fiscal stimulus can work.

4. Crowding out and crowding in

• Crowding out:
• The argument:
  • Government bonds compete with company bonds for a fixed pool of savings.
  • The government borrows more → less saving is left for companies → interest rates rise → private investment falls.
• SLR pre-emption in India:
  • SLR (Statutory Liquidity Ratio) is the share of deposits that banks must keep in safe assets, mainly G-secs (government securities).
  • So some bank funds are reserved for the government by law, which adds to crowding out.

• RBI evidence:

  • RBI research found that high debt hurts growth mainly through pressure on long-term interest rates, which cuts private investment and capital accumulation. [4]

• NCERT rebuttal:

• The pool of savings is not fixed.
• If deficits raise output (when there is spare capacity), income rises → saving rises.

• Then both the government and industry can borrow more.

• Crowding in (public spending pulling in private investment):

• Public investment in roads, power or ports raises the returns on private projects and raises demand.
• Private firms then invest more.
• Example: a new freight corridor makes nearby warehouses and factories profitable.

5. Are deficits inflationary?

• Inflationary effect of deficits:
• Higher government spending raises aggregate demand (AD), the total demand in the economy.

• Prices rise only if output cannot expand, i.e. the economy is near full capacity.

• When there are unutilised resources (idle factories, unemployed workers):

• Extra demand brings more output, not higher prices.

• So a high deficit need not be inflationary.

• Printing money to finance deficits is the most inflationary route. Borrowing from the public is less so.

6. Debt that is not a burden

• Productive debt:
• If public investment earns a return above the interest rate, the growth it creates pays off the debt.

• Example: borrow ₹100 at 7% (₹7 interest a year). The project raises GDP and tax revenue enough to yield 12% (₹12 a year). The debt pays for itself.

• NCERT summary point 6: debt is a burden only if it reduces future growth.

• Scale matters: debt growth must be judged against growth of the whole economy. That is why we use the debt-to-GDP ratio, not the rupee amount.
• A threshold exists:
• An RBI Occasional Paper (2014) estimated a threshold of 61% of GDP for India's general government debt.
• Above that level, more debt starts to lower growth.
• Actual debt was 66.0% (March 2013), above this threshold. [4]

7. Sustainability

• Debt-to-GDP ratio: debt divided by GDP, in per cent. It is the key indicator of a government's capacity to service debt (pay interest) and repay it.
• Centre's debt: 55.6% of GDP (2026-27 BE), down from 56.1% (2025-26 RE). [2]
• Medium-term target: 50 ± 1% of GDP by 2030-31. [2]

• The 16th Finance Commission projects combined Centre + states debt falling from 77.3% (2026-27) to 73.1% (2030-31) (verify current).

• FRBM legal targets:

• The FRBM Review Committee (Chair: N.K. Singh, 2017) recommended debt as the anchor.
• The 2018 amendment to the FRBM Act set:
  • general government debt (Centre + states, excluding debt they owe each other) at 60% of GDP by 2024-25;
  • central government debt at 40% of GDP by 2024-25. [5]

• These were not met, since the Centre's debt was still about 56% in 2025-26 RE. The anchor has shifted to the 50 ± 1% glide path (a planned year-by-year path) for 2030-31. [2][5]

• Debt sustainability: the ability to meet all debt payments without default and without impossible tax hikes or spending cuts. It depends on two things:

• the primary balance, i.e. the fiscal deficit minus interest payments (borrowing for current spending only);

• the growth-interest gap (r − g).

• Debt dynamics equation:

Δd ≈ [(r − g) / (1 + g)] · d + primary deficit

• d = debt/GDP ratio
• r = nominal interest rate on debt
• g = nominal GDP growth

• Δd = change in the debt ratio in one year (primary deficit also as % of GDP)

• Worked example (g > r):

• Take d = 56%, r = 7%, g = 10%, primary deficit = 1% of GDP.
• (0.07 − 0.10)/1.10 × 56 = −1.53 points.

• Δd ≈ −1.53 + 1.0 = −0.53, so the debt ratio falls to about 55.5% even with a primary deficit.

• Worked example (r > g):

• Take r = 10%, g = 7%, same d and primary deficit.
• (0.03/1.07) × 56 = +1.57.

• Δd ≈ 1.57 + 1.0 = +2.57, so the debt ratio snowballs upward.

• Interest rate-growth differential (r − g):

• When g > r, called the Domar condition (after Evsey Domar), the debt ratio can stabilise or fall even with modest primary deficits.
• India has had r < g in most recent years. This is a key assumption behind current fiscal plans.
• The IMF (2025 Article IV) expects the favourable growth-interest differential to continue for the foreseeable future. It says debt stability rests on a largely unchanged primary deficit and a favourable r − g. [6]

• Caution:

  • RBI research notes that the differential has "gradually narrowed down".
  • It also found only two years of primary surplus (2006-07 and 2007-08) in its study period. [4]
  • If r rises above g, the ratio snowballs.

• Twin deficit:

• A fiscal deficit and a current account deficit (CAD) at the same time. CAD means India buys more goods, services and income from abroad than it earns.
• The chain: government dissaving → lower national saving → the country must borrow abroad to fund investment → the external gap widens.
• Identity: (S − I) + (T − G) = (X − M), i.e. private saving gap + government saving gap = current account balance.

8. The 1991 crisis: debt going wrong (Class 11, LPG chapter)

• 1980s:
• Spending ran far beyond revenue.

• Development spending didn't generate revenue, PSU income was low, and even foreign borrowing was used for consumption, not investment.

• Late 1980s:

• Borrowing became unsustainable.
• Prices of essentials rose sharply.

• Imports grew faster than exports.

• 1991:

• Forex reserves covered only about two weeks of imports.

• India couldn't pay interest to foreign lenders.

• Response:

• India took a US$ 7 billion loan from the IMF and World Bank.

• The condition was liberalisation, which became the New Economic Policy (NEP).

• Lesson: this was external debt turning into a real burden. That is why today's buffers matter: reserves at 90.6% of external debt and a sovereign share of only 22.0% (end-March 2026). [3]

• BoP detail is in balance-of-payments-exchange-rate.

Prelims Hooks

• Stock vs flow: public debt = stock; fiscal deficit = flow. The deficit adds to the debt each year.
• Ricardian equivalence: Ricardo's idea, revived by Robert Barro. Forward-looking, dynastic households save the whole deficit-financed tax cut, so national saving is unchanged. It fails under myopia, liquidity constraints and finite horizons.
• Domar condition: g > r (nominal growth above the interest rate). The debt ratio can fall even with a small primary deficit.
• Formula: Δd ≈ [(r − g)/(1 + g)]·d + primary deficit.
• Primary deficit = fiscal deficit − interest payments.
• FRBM 2018 amendment (N.K. Singh Committee): general government debt 60%, Centre 40% of GDP by 2024-25. [5]
• Budget 2026-27: Centre's debt 55.6% of GDP (BE); fiscal deficit 4.3%; target 50 ± 1% by 2030-31. Debt is the anchor and fiscal deficit the operational target. [2]
• External debt (end-March 2026): US$ 762.8 bn, 20.8% of GDP. Sovereign share only 22.0%, so most of it is non-government debt. [3]
• Trap: "Deficits are always inflationary" is wrong. They are inflationary only near full capacity.
• Trap: "Crowding out assumes a fixed pool of savings." That is correct, and it is exactly the assumption NCERT rejects when output can expand.

Mains Points

• Is debt a burden?
• Domestic debt mostly moves money within the nation.
• External debt and growth-reducing debt are real burdens.
• Productive capex (capital spending) that earns more than the interest rate is self-financing.

• Use this to defend the high share of capital expenditure within a shrinking fiscal deficit.

• Sustainability rests on r < g:

• India's glide path to 50 ± 1% (2030-31) needs growth to stay above borrowing costs. [2][6]
• Risks: a global rate shock, a growth slowdown, or persistent primary deficits, since there were only two surplus years in the RBI study period. [4]

• Answer: build primary surpluses and deepen the bond market.

• Crowding out vs crowding in:

• SLR pre-emption and high G-sec yields hurt private credit, via the RBI's long-term rate channel. [4]
• Infrastructure-led public investment can crowd in private capex.

• The balance depends on spare capacity and the quality of spending.

• Intergenerational equity and fiscal rules:

• The FRBM Act's missed 2024-25 targets show rules need credible anchors and escape clauses. [5]
• The 1991 crisis shows what happens when borrowing funds consumption.
• Link to twin deficits and external vulnerability.