EconomicsISC Class 12 · Balance of Payments and Exchange Rate

Balance of Payments Account and Exchange Rate Determination in a Free Market

Updated 17 October 2026 · Fact-checked

The balance of payments (BOP) is a systematic record of all economic transactions between residents of a country and the rest of the world in a year. Receipts from abroad are credits and payments abroad are debits. In a flexible exchange rate system, the price of foreign currency (the exchange rate) is fixed where demand for it equals supply of it in the foreign exchange market.

Current account covers goods and invisibles; capital account covers FDI, portfolio and loans. Balance of trade counts only goods.

Illustration drawn for QuestionBuddy.

Understand Balance of Payments Account and Exchange Rate Determination

1. BOP: meaning and components. The BOP records all transactions of goods, services, income and financial assets between a country and the rest of the world. Entries: credit (+) for transactions that bring foreign exchange in (exports, inflow of capital, receipts from abroad); debit (-) for transactions that take foreign exchange out (imports, outflow of capital, payments abroad).

Current account: visible trade (goods), invisibles (services such as tourism, transport and software; income such as interest and dividends; transfers such as remittances).
Capital account: capital transactions: foreign direct investment, portfolio investment, external loans and borrowings, and changes in assets.
Balance of trade (BOT) = value of exports of goods - value of imports of goods (only visible trade). It differs from the current account balance, which also includes services, income and transfers.

2. Autonomous and accommodating items. Autonomous items are undertaken for their own purpose (profit, trade), independent of the BOP position, e.g. export and import of goods and services, investment flows. Accommodating items are undertaken to settle the gap created by the autonomous items, e.g. drawing down or building up foreign exchange reserves, borrowing from the IMF. A deficit (autonomous payments exceed receipts) is financed by accommodating items; a surplus adds to reserves. In accounting, the BOP always balances; the 'deficit' or 'surplus' means the balance on autonomous items.

3. Causes of disequilibrium (deficit). High imports (rise in income or prices), low exports (poor competitiveness, trade barriers abroad, lower world demand), inflation at home, capital outflows, high external debt service, large import of essentials such as oil, a fall in the exchange rate's competitiveness (overvalued currency).

4. Correcting a deficit. *Trade measures:* export promotion, import substitution, tariffs and quotas. *Monetary and fiscal measures:* reduce inflation and aggregate demand (cuts in spending, tight credit) so imports fall and exports become more competitive. *Exchange rate measures:* depreciation or devaluation to make exports cheaper and imports costlier. *Capital measures:* attract foreign investment and remittances.

5. Foreign exchange rate: meaning and systems. The exchange rate is the price of one currency in terms of another (for example rupees per dollar). Fixed (pegged) rate: the government or central bank fixes the rate and defends it with reserves. Flexible (floating) rate: the rate is determined freely by the demand for and supply of foreign exchange.

6. Determination in a free market. *Demand for foreign exchange* arises from imports of goods and services, payments of interest and dividends, travel abroad, repayment of foreign loans and capital outflows; the demand curve slopes downward (when the foreign currency is costlier, imports are costlier and demand for it falls). *Supply of foreign exchange* arises from exports, inflows of investment, remittances and tourism; it slopes upward (a higher price of foreign currency makes Indian exports cheaper and raises supply). The equilibrium exchange rate is where demand equals supply. An increase in demand for foreign exchange (more imports) raises the price of the foreign currency (the domestic currency depreciates); an increase in supply (more exports or inflows) lowers it (appreciation).

7. Terms (meaning only). Depreciation: a fall in the value of the domestic currency in terms of foreign currency under a flexible system. Appreciation: a rise in its value. Devaluation: a deliberate reduction in the official value by the government under a fixed rate. Revaluation: a deliberate increase in the official value.

8. Effects of depreciation. Exports become cheaper for foreigners and imports costlier, which tends to raise exports and lower imports, and so improve the BOP.

Balance of Payments Account and Exchange Rate Determination: key facts

Balance of trade: BOT = exports of goods - imports of goods
Current account balance: Credits (goods, services, income, transfers) - debits
Overall balance (autonomous): Current account balance + capital account balance
Free-market exchange rate: Demand for foreign exchange = supply of foreign exchange
Price conversion: Rupee price = foreign price x exchange rate (Rs per unit of foreign currency)

How to answer Balance of Payments Account and Exchange Rate Determination questions

BOP sums classify items as credits or debits and total them; exchange rate sums equate demand with supply.

1Classify each item: foreign exchange coming in is a credit, going out is a debit.
2Balance of trade uses goods only; the current account adds services, income and transfers.
3Capital account = capital credits - capital debits; overall = current + capital.
4For the exchange rate, equate demand and supply (functions or schedule) to get the rate and quantity.
5After a shift, repeat; an increase in demand for foreign exchange raises the rate (depreciation), an increase in supply lowers it (appreciation).
6To compare prices, multiply or divide by the exchange rate.

Balance of Payments Account and Exchange Rate Determination in real life

The idea, met in an everyday situation. Answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.

A fall in the rupee and the price of a laptop

Suppose the exchange rate is Rs 80 per dollar. An imported machine costs $1,000 and an Indian shirt sells for Rs 800. Because of heavy imports, the rate becomes Rs 90 per dollar.

What happens to the rupee cost of the machine and the dollar price of the shirt?

Try it first, then show the solutionSolution

Machine: 1,000 x 80 = Rs 80,000 before; 1,000 x 90 = Rs 90,000 after.
Shirt: 800/80 = $10 b e f or e; 800/90 = ab o u t$ 8.89 after.

Answer: The machine becomes costlier by Rs 10,000 while the shirt becomes cheaper for foreign buyers ( $10 t o ab o u t$ 8.89): depreciation hurts importers and helps exporters.

Memory hook: Weak rupee: imports hurt, exports smile.

Tricks to remember Balance of Payments Account and Exchange Rate Determination

Short memory aids. Say each one aloud once, then use it on a question the same day.

Credit in, debit out
Money coming into the country is a credit; money leaving is a debit.
Use it when: Classifying BOP entries.
Trade is goods only
BOT = goods. Add services, income and transfers to get the current account.
Use it when: BOT vs current account.
More demand for dollars: rupee falls
Increase in demand for foreign exchange pushes its price up; increase in supply pushes it down.
Use it when: Determination questions.

Balance of Payments Account and Exchange Rate Determination: solved examples

Ordered from board level to HOTS. Try each one before you open the solution.

Example 1: Debit or credit? · 1 mark · MCQBoard level

Which of the following is a debit item in the balance of payments of India?
(a) export of software services
(b) inflow of foreign direct investment
(c) import of crude oil
(d) remittances received from abroad

Try it first, then show the solutionSolution

Payments that take foreign exchange out are debits: import of oil. The others bring foreign exchange in.

Answer: (c) import of crude oil

Example 2: BOT and current account · 3 marks · Short answerBoard level

A country's transactions (Rs crore): exports of goods 500; imports of goods 300; foreign tourists' spending in the country 40; interest paid abroad 25. Find the balance of trade and the current account balance, stating credits and debits. (3 marks)

Try it first, then show the solutionSolution

BOT = 500 - 300 = +Rs 200 crore (surplus).
Credits: exports of goods 500 + tourist receipts 40 = 540.
Debits: imports 300 + interest paid 25 = 325.
Current account balance = 540 - 325 = +Rs 215 crore.

Answer: BOT = +Rs 200 crore (surplus); current account balance = +Rs 215 crore.

Example 3: Overall balance and accommodating items · 4 marks · Short answerHarder board level

In addition to the above (current account +215), the country receives Rs 200 crore of foreign direct investment and repays a foreign loan of Rs 60 crore. Find the capital account balance and the overall BOP on these autonomous items. How is the surplus recorded? (4 marks)

Try it first, then show the solutionSolution

Capital account = 200 (credit) - 60 (debit) = +Rs 140 crore.
Overall balance = 215 + 140 = +Rs 355 crore (surplus).
The surplus is matched by an accommodating item: foreign exchange reserves rise by Rs 355 crore (a debit entry in the reserves line so that the BOP balances in the accounting sense).

Answer: Capital account +Rs 140 crore; overall surplus Rs 355 crore, accommodated by a rise of Rs 355 crore in foreign exchange reserves.

Example 4: Exchange rate determination · 4 marks · Short answerHarder board level

In a free market the demand and supply of dollars (in $ million) at an exchange rate e (rupees per dollar) are Qd = 600 - 6e and Qs = 4e - 200. Find the equilibrium rate and quantity. If imports rise so that demand becomes Qd = 700 - 6e, find the new rate and say what happens to the rupee. (4 marks)

Try it first, then show the solutionSolution

Equilibrium: 600 - 6e = 4e - 200, so 10e = 800 and e = Rs 80 per dollar; quantity = 600 - 480 = 120 (and 4 x 80 - 200 = 120).
New demand: 700 - 6e = 4e - 200, so 10e = 900 and e = Rs 90; quantity = 700 - 540 = 160 (4 x 90 - 200 = 160).
The price of the dollar rises from Rs 80 to Rs 90: the rupee depreciates.

Answer: Equilibrium rate is Rs 80 per dollar with $120 mi l l i o n t r a d e d; a f t er t h e in cr e a se in d e man d t h er a t e i s R s 90 an d$ 160 million are traded, so the rupee depreciates.

Example 5: Effects of the exchange rate change · 4 marks · Short answerHOTS / competency

At Rs 80 per dollar an imported machine costs $1,000 and an Indian shirt Rs 800. After the rupee falls to Rs 90 per dollar, find the rupee cost of the machine and the dollar price of the shirt. Then, starting again from Rs 80, find the new rate if the supply of dollars increases by 50 (Qs = 4e - 150, Qd = 600 - 6e) and describe the change. (4 marks)

Try it first, then show the solutionSolution

Machine: Rs 80,000 becomes Rs 90,000. Shirt: $10 b eco m es 800/90 = ab o u t$ 8.89.
Higher supply of dollars: 600 - 6e = 4e - 150, so 10e = 750 and e = Rs 75 per dollar; quantity = 600 - 450 = 150.
The dollar becomes cheaper in rupees: the rupee appreciates from Rs 80 to Rs 75, so imports become cheaper and exports costlier.

Answer: Depreciation makes the machine dearer (Rs 90,000) and the shirt cheaper abroad (about $8.89); a rise in the supply of dollars appreciates the rupee to Rs 75 per dollar.

Where students lose marks in Balance of Payments Account and Exchange Rate Determination

The slips examiners see most often, and what to write instead.

Mistake: Treating the balance of trade as the BOP
Mixing the scope.
Wrong working
BOP = exports - imports of goods.
Right working
BOT covers goods only; BOP covers goods, services, income, transfers and capital transactions.
Do this: List the accounts included.
Usually costs: 2 marks.
Mistake: Reversing the effect of depreciation on trade
Not linking the exchange rate to prices.
Wrong working
Depreciation of the rupee makes imports cheaper.
Right working
Depreciation makes imports costlier and exports cheaper.
Do this: Work with a number: Rs 80 to Rs 90 per dollar.
Usually costs: 2 marks.
Mistake: Confusing devaluation and depreciation
Both mean a fall in the currency's value.
Wrong working
Devaluation occurs due to market forces.
Right working
Depreciation is market-driven (flexible rate); devaluation is a deliberate government act (fixed rate).
Do this: Remember who causes the change.
Usually costs: 1-2 marks.
Mistake: Putting capital inflow on the debit side
Mixing the direction.
Wrong working
FDI inflow is a debit.
Right working
Capital inflow is a credit; capital outflow is a debit.
Do this: Credit means foreign exchange received.
Usually costs: 1-2 marks.

Exam tips

The examiner report lists BOP debit and credit entries and the effects of appreciation and depreciation as difficult: practise classifying 8 to 10 items.
Keep the three headings: credit/debit, autonomous/accommodating, current/capital.
In determination of the exchange rate, draw a demand curve (downward) and supply curve (upward) with the rate on the vertical axis and foreign exchange on the horizontal axis.
Depreciation, appreciation, devaluation and revaluation: meaning only.
Include Indian examples (oil imports, software exports, remittances) where relevant.

Practice questions on Balance of Payments Account and Exchange Rate Determination

Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.

Q1 · 1 mark · MCQBoard level
If the exchange rate changes from Rs 70 per dollar to Rs 65 per dollar, the rupee has:
(a) appreciated
(b) depreciated
(c) been devalued
(d) been revalued by the government
Hint
The rupee buys more dollars.
Answer
(a) appreciated
Q2 · 3 marks · Short answerBoard level
A country's transactions (Rs crore): export of goods 350; import of goods 400; export of services 250; remittances received 70; payments for services abroad 30. Find the balance of trade and the current account balance. (3 marks)
Hint
BOT uses goods only.
Answer
BOT = 350 - 400 = -Rs 50 crore (deficit). Credits = 350 + 250 + 70 = 670; debits = 400 + 30 = 430; current account balance = +Rs 240 crore.
Q3 · 4 marks · Short answerHarder board level
The demand and supply of dollars ($ million) are Qd = 450 - 5e and Qs = 3e - 110, where e is Rs per dollar. Find the equilibrium rate and quantity. If the supply of dollars rises by 40 at every rate (Qs = 3e - 70), find the new rate and describe the change. (4 marks)
Hint
Equate and solve for e.
Answer
450 - 5e = 3e - 110, so 8e = 560 and e = Rs 70; quantity = 100. New: 450 - 5e = 3e - 70, so 8e = 520 and e = Rs 65; quantity = 125. The rupee appreciates from Rs 70 to Rs 65 per dollar.
Q4 · 4 marks · Short answerHarder board level
An export priced at Rs 7,000 is sold abroad and an import costs $200. If the government devalues the rupee from Rs 70 to Rs 75 per dollar, find the dollar price of the export and the rupee price of the import before and after. State whether the effect improves the BOP and the difference between devaluation and depreciation. (4 marks)
Hint
Dollar price = rupee price / rate.
Answer
Export: 7,000/70 = $100 b e f or e; 7, 000/75 = ab o u t$ 93.33 after. Import: 200 x 70 = Rs 14,000 before; 200 x 75 = Rs 15,000 after. Exports become cheaper and imports dearer, so the BOP tends to improve. Devaluation is a deliberate official cut under a fixed rate; depreciation is a market-driven fall under a flexible rate.
Q5 · 3 marks · Short answerHOTS / competency
A country's current account shows a deficit of Rs 150 crore and the capital account shows a surplus of Rs 180 crore. Find the overall balance, say what happens to foreign exchange reserves, and explain whether the autonomous or the accommodating items finance the current account deficit. (3 marks)
Hint
Overall = current + capital.
Answer
Overall = -150 + 180 = +Rs 30 crore (surplus). Reserves rise by Rs 30 crore (an accommodating entry). The current account deficit is financed by autonomous capital inflows, so no drawing down of reserves is needed; the surplus is added to reserves.

Test your recall

Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.

1.Is import of goods a debit or a credit?Show answer
A debit.
2.Balance of trade covers?Show answer
Visible items (goods) only.
3.Autonomous items are?Show answer
Transactions undertaken for their own sake, independent of the BOP position.
4.Depreciation means?Show answer
A fall in the value of the domestic currency under a flexible rate.
5.Effect of an increase in demand for foreign exchange?Show answer
The price of foreign exchange rises (the home currency depreciates).

Balance of Payments Account and Exchange Rate Determination: frequently asked questions

What is the balance of payments?

A record of all economic transactions between a country and the rest of the world in a year.

What are the components of the BOP?

The current account and the capital account (with changes in reserves as the accommodating item).

What fixes the exchange rate when the government does not interfere?

The point where demand for foreign exchange equals its supply.

What is the difference between devaluation and depreciation?

Devaluation is a deliberate government reduction under a fixed rate; depreciation is a market-driven fall.