Confidential by defaultEstablished 201072 Jurisdictions

Foreign Exchange Reserves

Foreign exchange reserves are the foreign-currency assets a central bank holds and can use at short notice: deposits and government securities in major currencies, gold, Special Drawing Rights and the country's reserve position at the IMF.

Also called: FX reserves · international reserves · official reserves · foreign currency reserves

A country can create its own currency but cannot create anyone else's. Reserves are the stock of external money it has earned, borrowed or attracted, held by the central bank so that the country can pay for imports, service foreign debt, steady its exchange rate and supply foreign currency to its banks in a squeeze.

Most reserves are held in a small number of currencies, with the US dollar the largest share, followed by the euro. The IMF publishes the aggregate currency composition each quarter. A currency widely held this way is called a reserve currency.

For cross-border payments, reserves decide whether foreign currency is routinely available or rationed. Where they are thin, licences and bank accounts do not help much: the constraint is that there are not enough dollars or euros to go round. Import cover and reserve adequacy are the usual ways to judge whether the stock is enough.

In practice

Gross reserves and usable reserves are different numbers. Borrowed funds, swap proceeds, pledged gold and deposits owed back to domestic banks all sit inside the headline figure.

Commonly confused with

TermHow it differs
Reserve requirementA reserve requirement is the balance a commercial bank must hold at its central bank. Foreign exchange reserves are the central bank's own holdings of foreign assets.

See also

Go deeper

← All glossary terms

Page Last Updated: 12/Oct/2026