📖 国际收支账户（BOP）

Economics

I. Lesson Focus

II. The Problem

A country reported the following in 2023 (USD billions): goods exports 500, imports 600; services exports 150, imports 100; net primary income inflow 80; net secondary income outflow 30. It also recorded foreign direct investment inflow of 120, purchases of foreign securities of 50, domestic residents’ purchases of foreign bonds of 30, and an official reserve increase of 15. How should this country’s balance of payments statement be compiled? Is the current account in surplus or deficit? How does the capital and financial account balance? If the overall BOP does not sum to zero, how are reserve assets used to achieve balance? Mastering these skills is a core requirement in CFA Level I Economics.

III. Basic Concepts of the Balance of Payments (BOP)

The Balance of Payments (BOP) is a systematic record of all economic transactions between residents of a country and the rest of the world over a given period (usually one year). It uses double-entry bookkeeping: every transaction is recorded with equal debit and credit entries, so the accounts should theoretically sum to zero.

The BOP consists of three main accounts: - Current Account - Capital Account - Financial Account

In CFA materials, the capital and financial accounts are often discussed together as the “capital and financial account.”

IV. The Current Account

The current account records international flows of goods, services, primary income, and secondary income.

1. Goods: Tangible merchandise. Exports are credits (+), imports are debits (−).
2. Services: Transportation, travel, charges for intellectual property, financial services, etc. Exports are credits.
3. Primary Income: Investment income (dividends, interest) and compensation of employees. Net inflows are credits.
4. Secondary Income: Current transfers such as remittances, gifts, and government aid. Net inflows are credits.

Current Account Balance (CA) = Goods balance + Services balance + Net primary income + Net secondary income

A current account surplus means the country is a net lender to the world; a deficit means it is a net borrower.

V. The Capital Account

The capital account is usually small and records: - Acquisition/disposal of non-produced, non-financial assets (e.g., patents, leases) - Capital transfers (e.g., debt forgiveness, migrant transfers)

Capital account transactions appear infrequently on the CFA exam; emphasis is placed on the financial account.

VI. The Financial Account

The financial account records transactions in financial assets and liabilities between residents and non-residents. It is recorded on a net basis: - Net acquisition of financial assets - Net incurrence of liabilities

Financial Account Balance = Net acquisition of financial assets − Net incurrence of liabilities

Key directional rules: - Domestic residents buying foreign assets → capital outflow → financial account debit (−) - Foreigners buying domestic assets → capital inflow → financial account credit (+)

Main components: - Direct Investment - Portfolio Investment - Other Investment - Reserve Assets

VII. BOP Recording Rules and the Fundamental Identity

The BOP uses double-entry accounting so that every transaction has offsetting debit and credit entries. Theoretically:

Current Account Balance + Capital Account Balance + Financial Account Balance + Net Errors and Omissions = 0

In CFA curriculum, this is often simplified to:

CA + KA + FA = 0 (ignoring the errors term)

or CA = −(KA + FA)

This identity implies that a current account deficit must be financed by a capital and financial account surplus, and vice versa.

Changes in reserve assets serve as the balancing item. When the sum of all other accounts is not zero, official reserves are adjusted to achieve overall balance.

VIII. Reserve Assets and the Official Settlements Balance

Reserve assets include: - Monetary gold - Special Drawing Rights (SDR) - Reserve position in the IMF - Foreign exchange reserves

An increase in reserves is recorded as a debit (capital outflow) in the financial account; a decrease is a credit (capital inflow).

Official Settlements Balance = Current Account + Capital Account + Non-reserve Financial Account

Any imbalance is offset by changes in reserve assets.

Worked Cases

Case 1: Basic BOP Compilation

Data for a country (USD billions): - Goods exports: 800, imports: 650 - Services exports: 220, imports: 180 - Net primary income inflow: 120 - Net secondary income outflow: 40 - Foreign direct investment inflow: 150 - Domestic purchases of foreign securities: 90 - Foreign purchases of domestic bonds: 60 - Official reserve increase: 30

Calculation: Current Account = (800−650) + (220−180) + 120 − 40 = 150 + 40 + 120 − 40 = +270 (surplus) Capital and Financial Account (excluding reserves) = +150 (FDI inflow) − 90 (outward portfolio) + 60 (bond inflow) = +120 To achieve BOP balance, the reserve increase of 30 is recorded as −30 in the financial account. Total Financial Account = 120 − 30 = +90 Verification (simplified for teaching): CA of +270 is offset by net capital and financial outflows (adjusted via reserves and possible small errors and omissions term).

Case 2: Impact of Income and Transfers

Country A (USD millions): Goods trade balance: −1,200 Services balance: +450 Net primary income: +320 (mainly overseas investment earnings) Net secondary income: −180 (high foreign aid)

CA = −1,200 + 450 + 320 − 180 = −610 (deficit of 610 million) The country finances this by attracting 850 million in foreign portfolio investment and making 200 million in outward direct investment. Net financial inflow = 850 − 200 = +650. Reserves decrease by 40 million to complete the balance (650 − 40 = 610), satisfying CA + FA = 0.

Case 3: Reserve Asset Adjustment Scenario

Country B has a current account deficit of 18 billion, capital account net inflow of 2 billion, and non-reserve financial account net inflow of 13 billion. Total imbalance = −18 + 2 + 13 = −3 billion. Official reserves must decrease by 3 billion (recorded as +3 billion in the financial account) to bring the overall BOP to zero.

Traps

Key Formulas

• Current Account Balance (CA) = Goods balance + Services balance + Net primary income + Net secondary income
• BOP Identity: CA + KA + FA = 0 (theoretically, ignoring net errors and omissions)
• CA = −(KA + FA)
• Financial Account = Net acquisition of financial assets − Net incurrence of liabilities
• Official Settlements Balance = CA + KA + Non-reserve portion of FA
• Change in Reserves = −(CA + KA + Non-reserve FA)

Practice Questions

Q1. Which of the following should be recorded as a credit in a country’s current account?
A. Domestic residents purchasing foreign equities
B. Foreign tourists’ spending inside the country
C. Domestic donations abroad
D. Foreign central bank purchases of domestic government bonds

Q2. If a country has a current account deficit of USD 200 billion, a capital account surplus of USD 10 billion, and a financial account (including reserves) surplus of USD 210 billion, then:
A. Overall BOP shows a surplus of USD 20 billion
B. Net errors and omissions equal −USD 20 billion
C. Reserves must increase
D. None of the above

Q3. Which of the following is most likely recorded as a debit in the financial account?
A. Foreigners purchasing domestic real estate
B. A domestic firm being acquired by a foreign company
C. A domestic bank making a loan to a foreign firm
D. Foreign government aid to the domestic economy

Q4. A country reports goods exports of 40 billion and imports of 52 billion, a services surplus of 6 billion, net primary income inflow of 8 billion, and net secondary income outflow of 2.5 billion. Its current account balance is closest to:
A. −0.5 billion (deficit)
B. +0.5 billion (surplus)
C. −8.5 billion (deficit)
D. −0.5 billion but recorded in the capital account

Q5. In the BOP, an allocation of Special Drawing Rights (SDR) is recorded in:
A. The current account
B. The capital account
C. Reserve assets within the financial account
D. Net errors and omissions

Q6. A country with persistently large current account deficits will most likely experience:
A. Continuous appreciation of its currency
B. Rising net foreign liabilities
C. Unlimited accumulation of reserve assets
D. Large capital account deficits

Q7. Which of the following is least likely to be classified as primary income?
A. Dividends remitted from overseas subsidiaries
B. Wages earned by cross-border employees
C. Unrequited government-to-government aid
D. Interest earned on foreign securities

Q8. An increase in a country’s official reserves most likely implies:
A. The country is financing a current account surplus
B. A debit entry in the financial account
C. Downward pressure on the domestic currency
D. An overall capital and financial account deficit

Answers

Takeaways

• The BOP uses double-entry bookkeeping and theoretically always sums to zero.
• A current account surplus corresponds to a capital and financial account deficit (net capital outflow).
• Purchases of foreign assets are negative entries in the financial account; foreign purchases of domestic assets are positive.
• Changes in reserve assets serve as the ultimate balancing item for current account imbalances.
• Primary income represents factor earnings; secondary income consists of unrequited transfers.
• CFA exams focus on correct account classification, balance calculation, and directional signs rather than complex macroeconomic modeling.