Module IX·Article I·~2 min read
Balance of Payments
Open Economy and Currencies
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Balance of Payments
Balance of payments: accounting for international transactions
The balance of payments is a system for recording all economic transactions between residents of a country and the rest of the world. Analyzing the balance of payments is critically important for understanding a country’s external position, currency dynamics, and macroeconomic stability.
Structure of the balance of payments
The balance of payments consists of three main accounts: the current account, the capital account, and the financial account. According to the rules of double entry, the sum of all accounts should equal zero (taking into account statistical discrepancies).
The current account reflects trade in goods and services, income from investments (interest, dividends), and current transfers (migrant remittances, aid). The trade balance—the difference between exports and imports of goods—is the largest component. A surplus in the current account means the country exports more than it imports and accumulates claims on the rest of the world. A deficit indicates the opposite—the country is living beyond its means and accumulating liabilities.
The financial account reflects capital flows: direct investment, portfolio investment (stocks and bonds), other investment (loans, deposits), and central bank reserve assets.
Balance of payments identity
A current account deficit must be financed by an inflow of capital in the financial account. If the country imports more than it exports, the difference is financed either by an inflow of foreign capital or by spending reserves. This identity links foreign trade with capital flows. A country with a chronic current account deficit becomes a net debtor; a country with a surplus becomes a net creditor.
External position
The accumulated external position (Net International Investment Position, NIIP) is the difference between residents' foreign assets and liabilities to non-residents. Positive NIIP means the country is a net creditor to the world; negative means a net debtor. The dynamics of NIIP are determined by the current account and changes in the valuation of assets and liabilities. A country with a chronic current account deficit worsens its external position.
Application for investors
A current account deficit requires a capital inflow for financing. If the capital inflow weakens, the currency comes under pressure. Countries with large deficits are vulnerable to "sudden stops"—sharp reversals in capital flows.
A current account surplus creates structural demand for foreign assets and puts pressure on currency appreciation. However, central bank interventions may restrain appreciation.
The structure of deficit financing is important. Foreign direct investment is more stable than portfolio flows. "Hot money" (short-term speculative capital) can rapidly reverse.
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