The capital account is one of the main sections of a country's balance of payments, the statistical record of all transactions between residents of an economy and the rest of the world. Under the IMF's sixth balance of payments manual (BPM6), the capital account is narrow: it records capital transfers, such as debt forgiveness and migrants' transfers of assets, and the purchase or sale of non-produced, non-financial assets such as land used by embassies, patents and broadcasting licences.
In everyday speech, economists, journalists and politicians often use "capital account" more broadly, to cover the financial account as well, which records foreign direct investment, portfolio investment, bank lending and changes in foreign exchange reserves. That is why policies are still called "capital account liberalization" or "capital controls" even though, in strict statistical terms, they mostly concern financial-account flows.
Capital account in plain terms
Think of a household that keeps two notebooks. The first records everyday income and spending: wages in, groceries and rent out. The second records bigger changes in what the family owns and owes: a house bought, a loan taken, an inheritance received. A country keeps similar notebooks. The current account is the everyday notebook; the capital and financial accounts are the "what we own and owe" notebook.
If the family spends more than it earns, the gap has to be covered somehow, by borrowing or by selling something it owns. The same applies to a country. A country that buys more from the world than it sells must bring in money from abroad, through foreigners buying its assets or lending to it. That inflow shows up in the second notebook.
How the accounts fit together
BPM6 divides the balance of payments into three parts: the current account, the capital account and the financial account. Because every international transaction has two sides, the accounts must add up. The basic identity is:
- is the current account balance: trade in goods and services, primary income such as interest and dividends, and secondary income such as remittances.
- is the capital account balance in the narrow BPM6 sense.
- is the net financial account: net acquisition of foreign assets by residents minus net incurrence of liabilities to non-residents, including reserve assets.
- is net errors and omissions, the balancing item that absorbs gaps in the data.
A worked example: suppose a country runs a current account deficit of 50 billion dollars and receives 2 billion dollars of capital transfers (KA = +2), and errors and omissions are zero. Then the financial account must equal −48 billion dollars: residents incurred 48 billion dollars more in net liabilities to foreigners than they acquired in foreign assets. In plain words, the rest of the world financed the gap by investing in or lending to the country.
The capital account in the strict sense is usually tiny for large economies. It can matter more for small or aid-dependent countries, where grants for investment projects and debt forgiveness, for example under the HIPC initiative, appear here as capital transfers.
What the broader capital and financial accounts record
When people talk about "capital flows", they usually mean the financial account, which BPM6 splits into five functional categories:
- Direct investment. Lasting stakes of 10% or more of voting power, such as a carmaker building a plant abroad.
- Portfolio investment. Purchases of shares and bonds that do not give control.
- Financial derivatives and employee stock options. Net flows on derivatives contracts.
- Other investment. Bank loans, deposits, trade credit and currency holdings.
- Reserve assets. Changes in the central bank's foreign currency, gold and SDR holdings.
These categories behave differently. Direct investment tends to be stable, while short-term portfolio and bank flows, sometimes called hot money, can reverse quickly and trigger a currency crisis or capital flight.
Openness, controls and policy
How open a country's capital account is shapes its policy choices. Under the impossible trinity, a country cannot at the same time keep a fixed exchange rate, free movement of capital and an independent monetary policy. Countries that peg their currency often limit capital flows; countries with fully open capital accounts usually let the exchange rate float.
Many advanced economies removed most capital restrictions in the 1980s and 1990s. Emerging markets have moved more cautiously. China keeps a partly closed capital account managed by the State Administration of Foreign Exchange, India allows full convertibility on the current account but manages capital-account transactions, and Pakistan's State Bank regulates outward investment and foreign borrowing. Since 2012 the IMF's "institutional view" has accepted that capital flow management measures can be appropriate in some circumstances, a shift from its earlier push for full liberalization.
Limitations of the data
Capital and financial account statistics are hard to compile. Flows routed through holding companies in offshore financial centres can make investment appear to come from places where little real activity happens. Large errors and omissions can signal unrecorded flows, including illicit ones. Valuation changes, such as a fall in the price of foreign bonds held by residents, affect the international investment position but are not transactions, so they do not appear in the balance of payments at all. The IMF approved a seventh edition of the manual (BPM7) in 2025, which keeps the three-account structure while updating treatment of areas such as digital assets.