Topic 6.1 Notes – Balance of Payments Accounts

1. The Balance of Payments

The Balance of Payments (BOP) is an accounting system that records all transactions between a country and the rest of the world over a specific time period.

It includes:

• Trade in goods and services
• Income from investments
• Transfers like foreign aid
• Purchases and sales of assets

There are two main accounts:

• Current Account (CA)
• Capital and Financial Account (CFA)

And they follow this identity:

$$\textbf{CA} + \textbf{CFA} = 0$$

That equation is not theory. It is accounting. Total credits must equal total debits.

Credits vs. Debits

• Credit (+) → money flows into the country
• Debit (-) → money flows out of the country

Quick AP rule:
If dollars enter the U.S., it’s a credit. If dollars leave, it’s a debit.

This connects directly to the circular flow model. When Americans buy foreign goods, dollars leave through imports. Foreigners now hold those dollars and must use them to buy U.S. exports or U.S. financial assets. The dollars flow back through the capital and financial account.

Circular flow model with the rest of the world sector

Focus on the arrows between the domestic economy and the “Rest of the World.” Imports send money out. Exports and foreign purchases of U.S. assets bring money back in. That back-and-forth movement is exactly what the Balance of Payments records.

2. The Current Account

The Current Account (CA) records flows of goods, services, income, and transfers.

Components of the Current Account

1. Net Exports (Balance of Trade)

$$\textbf{NX} = \text{Exports} - \text{Imports}$$

• Exports → credit
• Imports → debit
• Trade surplus → NX > 0
• Trade deficit → NX < 0

The U.S. has run persistent trade deficits, meaning imports exceed exports.

2. Net Income from Abroad

Investment income:

• Dividends/interest earned from foreign assets → credit
• Dividends/interest paid to foreign investors → debit

Example: If U.S. investors earn profits from a factory in Mexico, that is a credit in the CA.

3. Net Unilateral Transfers

One-sided payments:

• Foreign aid sent → debit
• Remittances received → credit

Surplus vs. Deficit

• CA surplus → country exports more than it imports (net lender).
• CA deficit → country imports more than it exports (net borrower).

The CA does not have to balance. It can show a surplus or deficit in any year.

3. The Capital and Financial Account

The Capital and Financial Account (CFA) records purchases and sales of assets.

It tracks capital flows, not goods.

Types of Asset Transactions

1. Foreign Direct Investment (FDI)

Physical control of businesses or property.

• Toyota builds a factory in Texas → credit to U.S.
• U.S. firm buys a plant in Germany → debit

2. Portfolio Investment

Stocks and bonds.

• Foreigners buy U.S. Treasury bonds → credit
• Americans buy foreign stocks → debit

If foreigners are buying more U.S. assets than Americans buy foreign assets, the U.S. has a CFA surplus (capital inflow).

The U.S. often runs CFA surpluses because foreigners buy U.S. Treasury securities to finance U.S. current account deficits.

4. How the Accounts Balance and How to Calculate Them

The key identity again:

$$\textbf{CA} + \textbf{CFA} = 0$$

If the U.S. has:

• CA = -400 billion

Then:

• CFA must = +400 billion

Why This Happens

Suppose Americans import 200 billion dollars of electronics from South Korea.

• CA: -200 billion (debit)

South Korea now holds 200 billion dollars. Those dollars must be used to:

• Buy U.S. exports (affects CA), or
• Buy U.S. assets (affects CFA)

Most often, they purchase U.S. bonds or real estate → CFA credit.

Step-by-Step Calculation

1. Identify each transaction.
2. Ask: does money enter or leave?
3. Classify:
   • Goods/services/income/transfers → CA
   • Asset purchases → CFA
4. Add CA.
5. Add CFA.
6. Check that CA + CFA = 0.

If your numbers don’t balance on a test, something was misclassified.

Official Reserves

If a country’s accounts don’t automatically balance through private transactions, its central bank (in the U.S., the Federal Reserve) can use official reserves of foreign currency to settle differences.

Think of reserves like a savings account the Fed uses to stabilize payments.