In macroeconomics and international finance, the capital account (also known as the financial account) is one of two primary components of the balance of payments, the other being the current account. Whereas the current account reflects a nation's net income, the capital account reflects net change in ownership of national assets.
A surplus in the capital account means money is flowing into the country, but unlike a surplus in the current account, the inbound flows effectively represent borrowings or sales of assets rather than payment for work. A deficit in the capital account means money is flowing out of the country, and it suggests the nation is increasing its ownership of foreign assets.
The term "capital account" is used with a narrower meaning by the International Monetary Fund (IMF) and affiliated sources. The IMF splits what the rest of the world calls the capital account into two top-level divisions: financial account and capital account, with by far the bulk of the transactions being recorded in its financial account.
At high level:
Breaking this down:
Conventionally, central banks have two principal tools to influence the value of their nation's currency: raising or lowering the base rate of interest and, more effectively, buying or selling their currency. Setting a higher interest rate than other major central banks will tend to attract funds via the nation's capital account, and this will act to raise the value of its currency. A relatively low interest rate will have the opposite effect. Since World War II, interest rates have largely been set with a view to the needs of the domestic economy, and moreover, changing the interest rate alone has only a limited effect.
A nation's ability to prevent a fall in the value of its own currency is limited mainly by the size of its foreign reserves: it needs to use the reserves to buy back its currency. Starting in 2013, a trend has developed for some central banks to attempt to exert upward pressure on their currencies by means of currency swaps rather than by directly selling their foreign reserves. In the absence of foreign reserves, central banks may affect international pricing indirectly by selling assets (usually government bonds) domestically, which, however, diminishes liquidity in the economy and may lead to deflation.
When a currency rises higher than monetary authorities might like (making exports less competitive internationally), it is usually considered relatively easy for an independent central bank to counter this. By buying foreign currency or foreign financial assets (usually other governments' bonds), the central bank has a ready means to lower the value of its own currency; if it needs to, it can always create more of its own currency to fund these purchases. The risk, however, is general price inflation. The term "printing money" is often used to describe such monetization, but is an anachronism, since most money exists in the form of deposits and its supply is manipulated through the purchase of bonds. A third mechanism that central banks and governments can use to raise or lower the value of their currency is simply to talk it up or down, by hinting at future action that may discourage speculators. Quantitative easing, a practice used by major central banks in 2009, consisted of large-scale bond purchases by central banks. The desire was to stabilize banking systems and, if possible, encourage investment to reduce unemployment.