Open Economy Macroeconomics Class 12 Notes

Q: Q1 Which of these is recorded in the capital account of the balance of payments? (A) Export of tea (B) Remittances from Indians abroad (C) Foreign direct investment in an Indian firm (D) Earnings from tourism

(C) Foreign direct investment in an Indian firm. It is a purchase of an asset; the others are current account items.

Key takeaways

The balance of payments records a country's transactions with the rest of the world in two main accounts: current and capital.
A current account deficit must be financed by a net capital inflow or by running down official reserves.
The exchange rate is the price of one currency in terms of another; a rise in ₹ per $ is a depreciation of the rupee.
India moved from a fixed peg to a managed floating rate in the early 1990s.
Imports leak spending abroad, so the open economy multiplier, 1 ÷ (1 − c + m), is smaller than the closed one.

This is the final chapter in the Introductory Macroeconomics chapter list for Class 12 Economics. It extends the model of income determination to trade.

6.1The Balance of Payments

The balance of payments (BoP) is a record of all transactions in goods, services and assets between residents of a country and the rest of the world over a period. It has a current account for trade, income and transfers, and a capital account for purchases and sales of assets. Receipts are credits; payments are debits.

What goes where in the balance of payments
Account	Records	Examples
Current account: goods	Exports and imports of goods (visible trade)	Export of rice; import of crude oil
Current account: invisibles	Services, factor income and transfers	Software exports, tourism, interest and dividends, remittances, gifts
Capital account	Purchases and sales of assets	Foreign direct investment, portfolio investment, loans
Official reserve transactions	Changes in the central bank's foreign exchange reserves	RBI selling dollars from reserves

The balance of exports and imports of goods is the trade balance. Adding trade in services and net transfers gives the current account balance. Any transaction that brings a payment from foreigners is a credit (+); any that requires a payment to foreigners is a debit (−).

BoP surplus and deficit

A country that spends more abroad than it earns, a current account deficit, must pay for the gap by selling assets or borrowing, that is, through a net capital inflow. If private inflows are not enough, the central bank sells foreign currency from its reserves. The fall in official reserves is the overall BoP deficit; a rise in reserves is a BoP surplus.

Autonomous transactions are made for their own sake, for profit or consumption, and are called “above the line”. The BoP is in surplus or deficit depending on whether autonomous receipts exceed autonomous payments.
Accommodating transactions, “below the line”, happen because of the gap in autonomous items. Official reserve transactions are the accommodating item.
Errors and omissions is the balancing item, reflecting the inability to record every transaction accurately.

6.2The Foreign Exchange Market

The foreign exchange market is where national currencies are traded, mainly by banks, brokers and central banks. The exchange rate is the price of one currency in another, such as rupees per dollar. Under flexible rates it is set by demand and supply; under fixed rates the government sets it; managed floating combines the two.

Determination of the exchange rate

The nominal exchange rate (e) is the number of rupees needed to buy one unit of foreign currency. The real exchange rate compares the prices of goods across countries in a common currency:

FormulaReal exchange rate = e × P_f ÷ P · P_f = foreign price level · P = domestic price level

If the real exchange rate is 1, goods cost the same in both countries, which is purchasing power parity. A rise in the real exchange rate makes foreign goods relatively dearer and domestic goods more competitive. Indices such as the nominal and real effective exchange rate average these rates over many trading partners.

Demand for foreign exchange comes from imports, buying foreign assets, and travel abroad. A higher price of dollars makes foreign goods dearer, so less foreign exchange is demanded: the demand curve slopes downward. Supply of foreign exchange comes from exports, foreigners investing in the country and remittances. A higher price of dollars makes the country's goods cheaper to foreigners, so more foreign exchange is supplied: the supply curve slopes upward.

Flexible exchange rates

Figure 6.1: A rise in demand for dollarsIf Indians import more or invest more abroad, demand for dollars shifts from D₁ to D₂. The exchange rate rises from e₁ to e₂: more rupees per dollar, so the rupee depreciates.

Under a flexible (floating) exchange rate, the rate moves freely to balance demand and supply, with no central bank intervention. A rise in the rate is depreciation of the domestic currency; a fall is appreciation. Expectations and interest rate differences between countries also move the rate: if people expect the dollar to strengthen, they buy dollars now, and the rate rises.

Fixed exchange rates

Under a fixed (pegged) exchange rate, the government sets the rate and the central bank buys or sells foreign currency to hold it. If it sets the price of foreign currency above the market level, it must buy the surplus; below it, it must sell from reserves. A deliberate official rise in the exchange rate is devaluation; a cut is revaluation. A peg the market doubts can drain reserves.

Managed floating

Under managed floating, the rate is market-determined but the central bank buys or sells foreign currency to smooth sharp movements, without targeting a fixed level. It is sometimes called a dirty float. India's rupee follows this system.

Exchange rate management: the international experience

Under the gold standard, before the First World War, each currency was convertible into gold at a fixed price, which fixed exchange rates between them. After the Second World War, the Bretton Woods system pegged currencies to the US dollar, which was convertible into gold, with the IMF overseeing the arrangement. It broke down in the early 1970s, and major currencies began to float.

India's exchange rate path
Year	Change
1966	Rupee devalued against the dollar during a balance of payments strain
1975	Rupee delinked from the pound sterling and pegged to a basket of currencies
July 1991	Two-step devaluation during the balance of payments crisis
March 1992	Liberalised Exchange Rate Management System (dual rate)
March 1993	Dual rates unified into a single market-determined rate
August 1994	Current account convertibility under IMF Article VIII

6.3The Determination of Income in an Open Economy

In an open economy, demand for domestic goods equals domestic spending plus exports minus imports. Imports rise with income at the marginal propensity to import, m, so each round of extra income partly leaks abroad. Equilibrium output is Y* = A ÷ (1 − c + m), and the multiplier is smaller than in a closed economy.

National income identity for an open economy

FormulaY = C + I + G + X − M · M = M + mY · X = X (exports depend on foreign income)

Domestic spending, C + I + G, includes spending on imported goods, so imports are subtracted to find demand for domestic output. Exports are demand from foreigners and are taken as autonomous.

Equilibrium output and the trade balance

FormulaY* = A ÷ (1 − c + m) · Open economy multiplier = 1 ÷ (1 − c + m) · ΔY ÷ ΔX = 1 ÷ (1 − c + m) · ΔY ÷ ΔM = −1 ÷ (1 − c + m)

A rise in exports raises output like a rise in investment, and also improves the trade balance, because only part of the extra income is spent on imports. A rise in autonomous imports reduces demand for domestic goods and lowers output. Domestic expansion, by raising income, raises imports and worsens the trade balance.

6.4Trade Deficits, Savings and Investment

A trade deficit is not always a sign of weakness. Rearranging the income identity gives X − M = (S − I) + (T − G). A country runs a trade deficit when private investment exceeds private saving, when the government runs a budget deficit, or both. Borrowing abroad to fund productive investment can be sound.

FormulaNet exports = (Private saving − Investment) + (Government saving) · X − M = (S − I) + (T − G)

If a trade deficit is caused by high investment, the borrowed funds add to productive capacity and can be repaid from future output. If it is caused by a large budget deficit or by low saving for consumption, the foreign debt is harder to service. When a budget deficit and a trade deficit appear together, they are often called twin deficits.

Worked Examples

Example 1: Open and closed economy multipliers

Given: MPC c = 0.75; marginal propensity to import m = 0.15. Exports rise by ₹40 crore.
Formula: Closed multiplier = 1 ÷ (1 − c); open multiplier = 1 ÷ (1 − c + m)
Steps: Closed: 1 ÷ 0.25 = 4. Open: 1 ÷ (0.25 + 0.15) = 1 ÷ 0.40 = 2.5. ΔY = 40 × 2.5 = 100. Induced imports = 0.15 × 100 = 15. Change in net exports = 40 − 15 = +25.
Answer: Output rises by ₹100 crore (not 160); the trade balance improves by ₹25 crore.

Example 2: Real exchange rate

Given: Nominal exchange rate e = ₹80 per $ (illustrative). US price index P_f = 110; Indian price index P = 121.
Formula: Real exchange rate = e × P_f ÷ P
Steps: 80 × 110 ÷ 121 = 8,800 ÷ 121 = 72.73.
Answer: Real exchange rate ≈ 72.7. Because Indian prices rose faster, Indian goods are relatively dearer than the nominal rate alone suggests.

Example 3: Saving, investment and the trade balance

Given: (₹ crore) Private saving 1,800; investment 2,000; tax revenue 900; government spending 1,200.
Formula: X − M = (S − I) + (T − G)
Steps: S − I = −200. T − G = −300. X − M = −200 + (−300) = −500.
Answer: Trade deficit of ₹500 crore, caused partly by investment above saving and partly by the budget deficit.

Common Mistakes

Reading a rise in ₹ per $ as the rupee getting stronger. More rupees per dollar means the rupee has depreciated.
Using “devaluation” for a market-driven fall. Devaluation is an official act under a fixed rate; under floating rates the term is depreciation.
Putting remittances in the capital account. They are transfers in the current account.
Forgetting the + m in the open economy multiplier.
Assuming every trade deficit is harmful. It depends on whether it funds investment or consumption.

10 Important Questions for Class 12 Board and School Examinations

Questions are written in original words. Marks are shown beside each question.

Q1Which of these is recorded in the capital account of the balance of payments? (A) Export of tea (B) Remittances from Indians abroad (C) Foreign direct investment in an Indian firm (D) Earnings from tourism 1 mark · MCQ

Q2Assertion (A): Devaluation and depreciation both mean a fall in the value of the domestic currency. Reason (R): Devaluation happens under a fixed exchange rate by government action, while depreciation happens under a flexible rate through market forces. Choose: (a) both true, R explains A; (b) both true, R does not explain A; (c) A true, R false; (d) A false, R true. 1 mark · Assertion-reason

(b) Both are true, but R does not explain A. R explains how the two differ, not why both lower the currency's value.

Q3When is a country said to have a balance of payments deficit? 3 marks

A country has a BoP deficit when its autonomous payments exceed autonomous receipts, so its official reserves fall.

The current and non-reserve capital accounts together show a shortfall.
The central bank sells foreign exchange from reserves to cover it.
The fall in official reserves measures the overall deficit.

Example: India's reserves fell sharply during the 1991 crisis.

The deficit has to be financed.

Q4Distinguish between autonomous and accommodating transactions. 3 marks

Autonomous transactions happen for their own sake; accommodating transactions happen to cover the gap they leave.

Autonomous items, such as trade for profit, are “above the line”.
Accommodating items, mainly official reserve changes, are “below the line”.
The BoP surplus or deficit is judged from autonomous items.

Example: an export order is autonomous; RBI selling dollars to fill a shortfall is accommodating.

Q5Distinguish between the nominal and the real exchange rate. 3 marks

The nominal rate is the price of one currency in another; the real rate also adjusts for price levels.

Nominal: rupees needed to buy one unit of foreign currency.
Real: e × P_f ÷ P, comparing the cost of goods across countries.
The real rate measures international competitiveness.

Example: if Indian prices rise faster than US prices, the real rate falls even if e is unchanged.

Q6Why does the demand curve for foreign exchange slope downward? 4 marks

Because a higher price of foreign currency makes foreign goods, assets and travel dearer, so people demand less of it.

Imports: a higher ₹/$ raises the rupee price of imports, so imports fall.
Foreign assets: buying them costs more rupees, so less is bought.
Travel and study abroad: become costlier, reducing demand.
Result: quantity of dollars demanded falls as the rate rises.

Example: at ₹90 per $, a $1,000 laptop costs ₹90,000 instead of ₹80,000.

Such a rise in the price of foreign exchange makes foreign goods dearer.

Q7What is managed floating? Why do many countries prefer it? 4 marks

Managed floating is a system where the market sets the exchange rate but the central bank intervenes to limit sharp movements.

Market-led: no fixed level is defended.
Intervention: the central bank buys or sells foreign currency to smooth volatility.
Flexibility: the rate can still adjust to lasting changes.
Stability: traders and investors face less uncertainty.

Example: the RBI sells dollars when the rupee falls too fast.

It is a compromise between a freely floating and a fixed rate: markets decide the level, while the central bank prevents disorderly swings.

Q8Explain how the exchange rate is determined under a flexible exchange rate system. What happens when demand for foreign exchange rises? 6 marks

Under flexible rates, the exchange rate settles where the demand for foreign exchange equals its supply.

Demand comes from imports, foreign investment and travel abroad; it slopes downward.
Supply comes from exports, foreign investment and remittances; it slopes upward.
Equilibrium is where the two curves cross.
If demand rises, the demand curve shifts right.
At the old rate there is excess demand, so the rate rises.
The domestic currency depreciates, which makes exports cheaper and imports dearer.

Thus the market restores balance through a change in price, without official reserves.

A fall in demand has the opposite effect, and the currency appreciates. If rising imports raise demand for dollars, the rupee price of the dollar may rise from ₹80 to ₹85, which discourages imports and encourages exports. The RBI may step in to smooth sharp swings.

Q9Explain why the multiplier is smaller in an open economy, and how a rise in exports affects output and the trade balance. 6 marks

The open economy multiplier is smaller because part of every rise in income is spent on imports and leaks abroad.

Imports rise with income: M = M + mY.
Each round of income adds less to demand for domestic goods.
Multiplier = 1 ÷ (1 − c + m), smaller than 1 ÷ (1 − c).
A rise in exports raises output by the open multiplier.
Higher output raises imports by m times the rise in output.
Net exports still improve, since induced imports are less than the export rise.

For example, with c = 0.8 and m = 0.3, the multiplier falls from 5 to 2.

Exports raise income, but with the trade balance improving by less than the rise in exports, because part of the extra income is spent on imports.

Q10Given C = 50 + 0.8Y, I = 40, G = 30, X = 60 and M = 20 + 0.2Y, find equilibrium income and the open economy multiplier. 4 marks · Numerical

Equilibrium income is 400 and the open economy multiplier is 2.5.

Given: C = 50; c = 0.8; I = 40; G = 30; X = 60; M = 20; m = 0.2.

Formula: Y* = (C + I + G + X − M) ÷ (1 − c + m).

Steps: A = 50 + 40 + 30 + 60 − 20 = 160. 1 − 0.8 + 0.2 = 0.4. Y* = 160 ÷ 0.4 = 400. Multiplier = 1 ÷ 0.4 = 2.5.

Final answer: Y* = 400; multiplier = 2.5.

10 Points for State PSC and UPSC Aspirants

India's balance of payments is compiled by the RBI and released quarterly, following the IMF's Balance of Payments Manual (sixth edition, BPM6).Why it matters: who compiles BoP data, and to which standard.Source: RBI; IMF BPM6
In the 1991 crisis, India's foreign currency reserves fell below US$1 billion by July 1991.Why it matters: the trigger for the 1991 reforms.Source: NCERT Introductory Macroeconomics
The rupee was devalued in two steps in July 1991, moved to the dual-rate LERMS in March 1992, and to a unified market rate in March 1993.Why it matters: the shift from peg to managed float.Source: NCERT Introductory Macroeconomics; RBI
India accepted current account convertibility under IMF Article VIII in August 1994.Why it matters: standard reform timeline fact.Source: NCERT Introductory Macroeconomics
The Foreign Exchange Management Act (FEMA), 1999 replaced FERA, 1973, and came into force in June 2000.Why it matters: the legal framework for forex transactions.Source: India Code
The rupee is not fully convertible on the capital account; the Tarapore committees (1997 and 2006) set out roadmaps towards it.Why it matters: a frequent analytical question.Source: Reserve Bank of India
The RBI publishes nominal and real effective exchange rate indices (NEER and REER) for trade-weighted currency baskets.Why it matters: the practical form of the real exchange rate.Source: RBI, Handbook of Statistics on the Indian Economy
India is the world's largest recipient of remittances, a current account credit.Why it matters: explains strength in India's invisibles.Source: World Bank, Migration and Development
A surplus in services and transfers (invisibles) has generally offset part of India's merchandise trade deficit.Why it matters: structure of India's current account.Source: RBI, balance of payments data
Since 2022 the RBI has allowed invoicing and settlement of international trade in rupees through special vostro accounts.Why it matters: current affairs on rupee internationalisation.Source: Reserve Bank of India

These are revision notes, not official predictions of exam content.

Quick Revision

BoP: current account + capital account + official reserves.
Current account: goods, services, income, transfers.
Credit = receipt (+); debit = payment (−).
Autonomous: above the line; accommodating: below the line.
Real exchange rate = eP_f ÷ P; PPP when it equals 1.
Fixed: devaluation; flexible: depreciation; India: managed float.
Open multiplier = 1 ÷ (1 − c + m).
X − M = (S − I) + (T − G).

Glossary:

Balance of payments Exchange rate Multiplier

Related chapters: Money and Banking, for RBI reserves and sterilisation; Class 11 Indian Economic Development, Chapter 3, Liberalisation, Privatisation and Globalisation (page coming soon). From Class 11: Liberalisation, Privatisation and Globalisation, Comparative Development Experiences of India and Its Neighbours.

Sources

NCERT textbooks: Introductory Macroeconomics, Class 12, National Council of Educational Research and Training. Syllabus reference. Accessed 23 October 2026.
Handbook of Statistics on the Indian Economy, Reserve Bank of India. Accessed 23 October 2026.
Balance of Payments and International Investment Position Manual, Sixth Edition (BPM6), International Monetary Fund. Accessed 23 October 2026.
Migration and Remittances, World Bank. Accessed 23 October 2026.
India Code: Foreign Exchange Management Act, 1999, Legislative Department. Accessed 23 October 2026.
Economic Survey, Ministry of Finance, Government of India. Accessed 23 October 2026.

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Drafted with AI assistance from the NCERT chapter structure, in original words. Content is checked and approved by Dr. Anamika Shrivastava, PhD Economics, before publication. Read how this site works or send a correction.

Syllabus year 2026-27 · Last updated 23 October 2026

Class 12 Economics Chapter 6: Open Economy Macroeconomics (NCERT Introductory Macroeconomics)