BoP equilibrium: the overall balance, reserves and errors
Balance of Payments and Exchange Rates · section 4 of 12
In this note
Detail
1. How a deficit is financed
- Current account deficit (CAD): a country pays out more to the world than it earns. This covers trade in goods and services, income and transfers.
- A country that spends more than it earns abroad must sell assets or borrow. An individual has to do the same.
- The two ways to finance a CAD:
- Capital account surplus (net capital inflow): foreigners invest in India or lend to India through FDI, FPI, loans and NRI deposits.
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Drawing down reserves: the RBI sells some of its stock of foreign currency.
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Identity: current account + capital account ≡ 0, once reserve changes are counted inside the capital account.
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Every rupee of CAD has to be matched by an equal inflow of funds from somewhere.
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BoP equilibrium: private and official international lending fully finance the CAD, so there is no reserve movement.
- Worked example:
- CAD = −$50 bn and net capital inflow = +$50 bn → reserves do not change → the BoP is in equilibrium.
- If the inflow is only +$35 bn, the RBI must sell $15 bn of reserves to cover the gap.
2. Overall balance and reserves
- Formula: Overall balance = CA + KA + errors and omissions.
- BoP surplus: the overall balance is above 0 and official reserves rise.
- BoP deficit: the overall balance is below 0 and official reserves fall.
- Official reserve sale: in a deficit, the RBI sells foreign exchange to cover the gap.
- The monetary authority (the RBI in India) is the ultimate financier of any deficit and the recipient of any surplus.
- Recent Indian data:
- Q2 2022-23 (July-September 2022): CAD of $30.9 bn (3.8% of GDP). Reserves had a depletion of $30.4 bn [2].
- Q2 2023-24: CAD narrowed to $8.3 bn (1.0% of GDP). Reserves had an accretion of $2.5 bn [2].
- H1 2023-24 (April-September 2023): reserve accretion of $27.0 bn [2].
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"Accretion" means reserves were added. "Depletion" means reserves were used up.
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FY 2024-25: CAD was only 0.6% of GDP. Strong services exports and steady remittances kept it low [3].
- Reserve buffer: forex reserves were $697.9 bn (20 June 2025). This is enough to pay for more than 11 months of goods imports [3].
3. Sign-convention trap (NCERT)
| BoP deficit | Balanced BoP | BoP surplus | |
|---|---|---|---|
| Overall balance | < 0 | = 0 | > 0 |
| Reserve change (as recorded) | > 0 | = 0 | < 0 |
- Why a fall in reserves is shown as positive: a fall in reserves is a source of funds, like money coming in, so it carries a plus sign.
- Why a rise in reserves is shown as negative: a rise is a use of funds, like buying a foreign asset, so it carries a minus sign.
- RBI's BoP tables also show a reserve increase with a minus sign.
- Exam trap: "(−) in the reserves row" in an RBI table means reserves went up, not down.
4. Autonomous vs accommodating transactions
| Autonomous transactions | Accommodating transactions |
|---|---|
| Made for their own reasons, such as profit or consumption, independent of the BoP position | Made to fill the BoP gap |
| "Above the line" | "Below the line" |
| Their net balance defines a surplus or deficit | Official reserve transactions are the key item |
- Official reserve transactions: the central bank's sales or purchases of reserves to finance a deficit or absorb a surplus (NCERT Q2).
- Why they matter more under fixed exchange rates:
- Under Bretton Woods (1944-1971), central banks had to defend a fixed parity, so any autonomous gap had to be closed by reserve sales or purchases.
- Under a clean float, the exchange rate moves to close the gap, so reserve changes are close to zero.
- India today runs a managed float. The RBI buys and sells dollars to smooth sharp swings, so reserve transactions still matter.
5. Errors and omissions
- Errors and omissions: the statistical discrepancy, the balancing item. Not every cross-border transaction can be recorded accurately, because of timing gaps, under-invoicing and unrecorded flows.
- It is the figure that makes the BoP accounts add up exactly.
6. NCERT error in Table 6.1
- CAB (−38) + KA (41.15) = +3.15.
- For the overall balance to be 0, errors and omissions must be −3.15, not +3.15 as printed.
- Check: −38 + 41.15 + (−3.15) = 0 ✔
7. Stock view: International Investment Position (IIP)
- International investment position (IIP): a statement of a country's external financial assets and liabilities at a point in time.
- Net IIP = external assets − external liabilities.
- Flow vs stock:
- The BoP measures flows during a period, like water entering a tank.
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The IIP measures the stock those flows build up, like the water level in the tank.
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India is a net debtor with a negative net IIP.
- March 2022: net claims of non-residents on India were $359.8 bn. This rose by $5.6 bn in Q4 2021-22 [4].
- The ratio of India's international financial assets to liabilities was 71.9% (March 2022), up from 70.8% a year earlier [4].
- Net IIP to GDP was −11.6% (March 2022), an improvement from −13.2% the year before [4].
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Reserve assets made up about two-thirds of India's international financial assets (March 2022) [4].
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The IIP can change without any BoP flow: a 2.02% rupee depreciation in Q4 2021-22 changed the rupee value of liabilities (a valuation effect) [4].
- Latest data: the RBI now publishes the IIP quarterly. The latest release is dated 30 June 2026 [5]. The figures above are from the last release retrieved (March 2022); check the newest release for current values.
8. NCERT Q17: should a CAD be a cause for alarm?
Judge a CAD on three tests.
- Test 1: quality of financing
- Stable FDI (long-term investment in factories and firms) is safe.
- Hot money (short-term portfolio flows) and short-term debt can reverse suddenly. That forces reserve sales or a sharp fall in the rupee.
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FDI inflows were $81.04 bn (provisional) in FY 2024-25, up 14% from $71.28 bn in FY 2023-24 [3].
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Test 2: use of the funds
- A CAD that funds investment builds future export capacity, so it helps repay itself.
- A CAD that funds consumption does not.
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Class 11 notes that 1980s foreign borrowing was "spent on meeting consumption needs". This fed the 1991 BoP crisis, when reserves could barely cover about two weeks of imports.
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Test 3: size
- The Rangarajan HLC (1993) (High Level Committee on Balance of Payments) put the sustainable CAD at about 1.6% of GDP.
- About 2.5-3% of GDP is commonly cited today.
- India's CAD of 3.8% of GDP (Q2 2022-23) [2] crossed this band. The 0.6% (FY 2024-25) figure [3] is well within it.
Prelims Hooks
- Overall balance = CA + KA + errors and omissions. A BoP surplus means overall balance > 0 and reserves rise.
- BoP equilibrium = the CAD is fully financed by capital inflows with zero reserve change. It does not mean CAD = 0.
- In RBI BoP tables, a reserve increase carries a minus (−) sign, because it is a use of funds.
- Autonomous = "above the line" and defines the surplus or deficit. Accommodating = "below the line" and closes the gap (official reserve transactions).
- Official reserve transactions matter most under a fixed exchange rate (Bretton Woods) and least under a clean float.
- Errors and omissions = the statistical discrepancy or balancing item. In NCERT Table 6.1 it should be −3.15, not +3.15.
- IIP = a stock of external assets and liabilities at a date. The BoP = flows over a period. India's net IIP is negative (net debtor) [4].
- Rangarajan HLC (1993): sustainable CAD ≈ 1.6% of GDP.
- India's forex reserves: $697.9 bn (20 June 2025), covering more than 11 months of goods imports [3].
Mains Points
- Reserves vs the exchange rate as the shock absorber:
- The monetary authority is the ultimate financier of a BoP deficit.
- India's managed float uses reserves to smooth rupee swings. For example, reserves fell by $30.4 bn in Q2 2022-23 [2].
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Trade-off: large reserves act as insurance against crises like 1991, but holding them costs money (low returns and sterilisation costs).
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Is a CAD sustainable? Use three tests:
- Financing quality: FDI of $81.04 bn in FY 2024-25 [3] is stable, while hot money can reverse suddenly.
- Use: investment builds future export capacity; consumption, as in the 1980s, led to 1991.
- Size: the 1.6% (Rangarajan) or 2.5-3% threshold.
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Link to GS-III: external sector vulnerability.
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Flow vs stock:
- A small CAD can still add to a large negative net IIP ($359.8 bn net claims, March 2022 [4]).
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Rupee depreciation raises the rupee value of liabilities through valuation effects, so managing external debt matters beyond the yearly BoP.
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Data quality:
- Large or volatile errors and omissions can signal unrecorded flows, such as under-invoicing or informal remittances.
- This affects how reliable BoP-based policy signals are.
Sources
- 1Class 12, Ch 6 "Open Economy Macroeconomics"; Class 11, Ch 3 "Liberalisation, Privatisation and Globalisation: An Appraisal" (primary)
- 2RBI Press Release, "Developments in India's Balance of Payments during Q2 (July-September) of 2023-24", 26 Dec 2023rbi.org.in · tier 1
- 3PIB, "India's Economic Surge" (July 2025)static.pib.gov.in · tier 1
- 4RBI Press Release, "India's International Investment Position (IIP), March 2022", 30 June 2022rbi.org.in · tier 1
- 5RBI, International Investment Position releases pagerbi.org.in · tier 1