forex reserves

Foreign exchange reserves in a strict sense are only the foreign currency deposits held by central banks and monetary authorities. However, the term in popular usage commonly includes foreign exchange and gold, SDRs and IMF reserve positions. This broader figure is more readily available, but it is more accurately termed official reserves or international reserves. These are assets of the central bank held in different reserve currencies, such as the dollar, euro and yen, and used to back its liabilities, e.g. the local currency issued, and the various bank reserves deposited with the central bank, by the government or financial institutions.HistoryForeign exchange Reserves were formerly held only in gold, as official gold reserves. But under the Bretton Woods system, the United States pegged the dollar to gold, and allowed convertibility of dollars to gold. This effectively made dollars appear as good as gold. The U.S. later abandoned the gold standard, but the dollar has remained relatively stable as a fiat currency, and it is still the most significant reserve currency. Central banks now typically hold large amounts of multiple currencies in reserve.PurposeIn a non fixed exchange rate system, reserves allow a central bank to purchase the issued currency, exchanging its assets to reduce its liability. The purpose of reserves is to allow central banks an additional means to stabilise the issued currency from excessive volatility, and protect the monetary system from shock, such as from currency traders engaged in flipping. Large reserves are often seen as a strength, as it indicates the backing a currency has. Low or falling reserves may be indicative of an imminent bank run on the currency or default, such as in a currency crisis. Central banks sometimes claim that holding large reserves is a security measure. This is true to the extent that a central bank can prop up its own currency by spending reserves. But often, very large reserves are not a hedge against inflation but rather a direct consequence of the opposite policy: the bank has purchased large amounts of foreign currency in order to keep its own currency relatively cheap.Changes in ReservesThe quantity of foreign exchange reserves can change as a central bank implements monetary policy. A central bank that implements a fixed exchange rate policy may face a situation where supply and demand would tend to push the value of the currency lower or higher (an increase in demand for the currency would tend to push its value higher, and a decrease lower). In a fixed exchange rate regime, these operations occur automatically, with the central bank clearing any excess demand or supply by purchasing or selling the foreign currency. Mixed exchange rate regimes require the use of foreign exchange operations. sterilized or unsterilized to maintain the targeted exchange rate within the prescribed limits.Foreign exchange operations that are unsterilized will cause an expansion or contraction in the amount of domestic currency in circulation, and hence directly affect monetary policy and inflation: An exchange rate target cannot be independent of an inflation target. Countries that do not target a specific exchange rate are said to have a floating exchange rate, and allow the market to set the exchange rate; for countries with floating exchange rates, other instruments of monetary policy are generally preferred and they may limit the type and amount of foreign exchange interventions. Even those central banks that strictly limit foreign exchange interventions, however, often recognize that currency markets can be volatile and may intervene to counter disruptive short-term movements.To maintain the same exchange rate if there is increased demand, the central bank can issue more of the domestic currency and purchase the foreign currency, which will increase the sum of foreign reserves. In this case, the currency's value is being held down; since the domestic money supply is increasing , this may provoke domestic inflation.Since the amount of foreign reserves available to defend a weak currency (a currency in low demand) is limited, a foreign exchange crisis or devaluation could be the end result. For a currency in very high and rising demand, foreign exchange reserves can theoretically be continuously accumulated, although eventually the increased domestic money supply will result in inflation and reduce the demand for the domestic currency (as its value relative to goods and services falls). In practice, some central banks, through open market operations aimed at preventing their currency from appreciating, can at the same time build substantial reserves.In practice, few central banks or currency regimes operate on such a simplistic level, and numerous other factors will affect the eventual outcome. As certain impacts (such as inflation) can take many months or even years to become evident, changes in foreign reserves and currency values in the short term may be quite large as different markets react to imperfect data.Costs and BenefitsLarge reserves enhance a government's ability to manipulate exchange rates -- but they carry an opportunity cost. The "quasi-fiscal costs" of holding reserves are the gap between the low-yield assets that asset managers typically hold, and the average cost of government debt in the country. In addition, governments can suffer losses from management of reserves - all of which is ultimately fiscal. Even in absence of a currency crisis, there can be a fiscal cost. China, for example, holds huge U.S. dollar-denominated assets, but the greenback has been weakening.Excess ReservesForeign exchange reserves are important indicators of ability to repay foreign debt and for currency defense, and are used to determine credit ratings of nations, however, other government funds that are counted as liquid assets that can be applied to liabilities in times of crisis include stabilization funds, otherwise known as Sovereign wealth funds. If those were included, Norway and Persian Gulf States would rank higher on these lists, and UAE's $1.3 trillion Abu Dhabi Investment Authority would be second after China. Singapore also has significant government funds including Temasek Holdings and GIC. India is also planning to create its own investment firm from its foreign exchange reserves.