Валютные резервы центрального банка

Money held by a central bank to pay debts, if needed

Foreign exchange reserves (also called forex reserves or FX reserves) are cash and other reserve assets such as gold and silver held by a central bank or other monetary authority that are primarily available to balance payments of the country, influence the foreign exchange rate of its currency, and to maintain confidence in financial markets. Reserves are held in one or more reserve currencies, nowadays mostly the United States dollar and to a lesser extent the euro. Foreign exchange reserves assets can comprise banknotes, bank deposits, and government securities of the reserve currency, such as bonds and treasury bills. Some countries hold a part of their reserves in gold, and special drawing rights are also considered reserve assets. Often, for convenience, the cash or securities are retained by the central bank of the reserve or other currency and the "holdings" of the foreign country are tagged or otherwise identified as belonging to the other country without them actually leaving the vault of that central bank. From time to time they may be physically moved to the home or another country. Normally, interest is not paid on foreign cash reserves, nor on gold holdings, but the central bank usually earns interest on government securities. The central bank may, however, profit from a depreciation of the foreign currency or incur a loss on its appreciation. The central bank also incurs opportunity costs from holding the reserve assets (especially cash holdings) and from their storage, security costs, etc.

Foreign exchange reserves are also known as reserve assets and include foreign banknotes, foreign bank deposits, foreign treasury bills, and short and long term foreign government securities, as well as gold reserves, special drawing rights (SDRs), and International Monetary Fund (IMF) reserve positions. In a central bank's accounts, foreign exchange reserves are called reserve assets in the capital account of the balance of payments, and may be labeled as reserve assets under assets by functional category. In terms of financial assets classifications, reserve assets can be classified as gold bullion, unallocated gold accounts, special drawing rights, currency, reserve position in the IMF, interbank position, other transferable deposits, other deposits, debt securities, loans, stocks (listed and unlisted), investment fund shares and financial derivatives, such as forward contracts and options. There is no counterpart for reserve assets in liabilities of the International Investment Position. Usually, when the monetary authority of a country has some kind of liability, this will be included in other categories, such as Other Investments. On a central bank's Balance sheet, foreign exchange reserves are assets, along with domestic credit.

After the end of the Bretton Woods system in the early 1970s, many countries adopted flexible exchange rates. In theory reserves are not needed under this type of exchange rate arrangement; thus the expected trend should be a decline in foreign exchange reserves. However, the opposite happened and foreign reserves present a strong upward trend. Reserves grew more than gross domestic product (GDP) and imports in many countries. The only ratio that is relatively stable is foreign reserves over M2. Below are some theories that can explain this trend.

Credit risk agencies and international organizations use ratios of reserves to other external sector variables to assess a country's external vulnerability. For example, Article IV of 2013 uses total external debt to gross international reserves, gross international reserves in months of prospective goods and nonfactor services imports to broad money, broad money to short term external debt, and short term external debt to short term external debt on residual maturity basis plus current account deficit. Therefore, countries with similar characteristics accumulate reserves to avoid negative assessment by the financial market, especially when compared to members of a peer group.

Reserves are used as savings for potential times of crises, especially balance of payments crises. Original fears were related to the current account, but this gradually changed to also include financial account needs. Furthermore, the creation of the IMF was viewed as a response to the need of countries to accumulate reserves. If a specific country is suffering from a balance of payments crisis, it would be able to borrow from the IMF. However, the process of obtaining resources from the Fund is not automatic, which can cause problematic delays especially when markets are stressed. Therefore, the fund only serves as a provider of resources for longer term adjustments. Also, when the crisis is generalized, the resources of the IMF could prove insufficient. After the 2008 crisis, the members of the Fund had to approve a capital increase, since its resources were strained. Moreover, after the 1997 Asian crisis, reserves in Asian countries increased because of doubt in the IMF reserves. Also, during the 2008 crisis, the Federal Reserve instituted currency swap lines with several countries, alleviating liquidity pressures in dollars, thus reducing the need to use reserves.

Countries engaging in international trade, maintain reserves to ensure no interruption. A rule usually followed by central banks is to hold in reserve at least three months of imports. Also, an increase in reserves occurred when commercial openness increased (part of the process known as globalization). Reserve accumulation was faster than that which would be explained by trade, since the ratio has increased to several months of imports. Furthermore, the ratio of reserves to foreign trade is closely watched by credit risk agencies in months of imports.

The opening of a financial account of the balance of payments has been important during the last decade. Hence, financial flows such as direct investment and portfolio investment became more important. Usually financial flows are more volatile that enforce the necessity of higher reserves. Moreover, holding reserves, as a consequence of the increasing of financial flows, is known as Guidotti–Greenspan rule that states a country should hold liquid reserves equal to their foreign liabilities coming due within a year. For example, international wholesale financing relied more on Korean banks in the aftermath of the 2008 crisis, when the Korean Won depreciated strongly, because the Korean banks' ratio of short term external debt to reserves was close to 100%, which exacerbated the perception of vulnerability.

Reserve accumulation can be an instrument to interfere with the exchange rate. Since the first General Agreement on Tariffs and Trade (GATT) of 1948 to the foundation of the World Trade Organization (WTO) in 1995, the regulation of trade is a major concern for most countries throughout the world. Hence, commercial distortions such as subsidies and taxes are strongly discouraged. However, there is no global framework to regulate financial flows. As an example of regional framework, members of the European Union are prohibited from introducing capital controls, except in an extraordinary situation. The dynamics of China's trade balance and reserve accumulation during the first decade of the 2000 was one of the main reasons for the interest in this topic. Some economists are trying to explain this behavior. Usually, the explanation is based on a sophisticated variation of mercantilism, such as to protect the take off in the tradable sector of an economy, by avoiding the real exchange rate appreciation that would naturally arise from this process. One attempt uses a standard model of open economy intertemporal consumption to show that it is possible to replicate a tariff on imports or a subsidy on exports by closing the capital account and accumulating reserves. Another is more related to the economic growth literature. The argument is that the tradable sector of an economy is more capital intense than the non tradable sector. The private sector invests too little in capital, since it fails to understand the social gains of a higher capital ratio given by externalities (like improvements in human capital, higher competition, technological spillovers and increasing returns to scale). The government could improve the equilibrium by imposing subsidies and tariffs, but the hypothesis is that the government is unable to distinguish between good investment opportunities and rent seeking schemes. Thus, reserves accumulation would correspond to a loan to foreigners to purchase a quantity of tradable goods from the economy. In this case, the real exchange rate would depreciate and the growth rate would increase. In some cases, this could improve welfare, since the higher growth rate would compensate the loss of the tradable goods that could be consumed or invested. In this context, foreigners have the role to choose only the useful tradable goods sectors.

Reserve accumulation can be seen as a way of "forced savings". The government, by closing the financial account, would force the private sector to buy domestic debt for lack of better alternatives. With these resources, the government buys foreign assets. Thus, the government coordinates the savings accumulation in the form of reserves. Sovereign wealth funds are examples of governments that try to save the windfall of booming exports as long term assets to be used when the source of the windfall is extinguished.

There are costs in maintaining large currency reserves. Fluctuations in exchange rates result in gains and losses in the value of reserves. In addition, the purchasing power of fiat money decreases constantly due to devaluation through inflation. Therefore, a central bank must continually increase the amount of its reserves to maintain the same power to manage exchange rates. Reserves of foreign currency may provide a small return in interest. However, this may be less than the reduction in purchasing power of that currency over the same period of time due to inflation, effectively resulting in a negative return known as the "quasi fiscal cost". In addition, large currency reserves could have been invested in higher yielding assets. Several calculations have been attempted to measure the cost of reserves. The traditional one is the spread between government debt and the yield on reserves. The caveat is that higher reserves can decrease the perception of risk and thus the government bond interest rate, so this measures can overstate the cost. Alternatively, another measure compares the yield in reserves with the alternative scenario of the resources being invested in capital stock to the economy, which is hard to measure. One interesting In 2011, after the currency appreciated against the Euro from 1.5 to 1.1, the SNB announced a ceiling at the value of CHF 1.2. In the middle of 2012, reserves reached 71% of GDP.

The modern exchange market as tied to the prices of gold began during 1880. Of this year the countries significant by size of reserves were Austria Hungary, Belgium, Canadian Confederation, Denmark, Grand Duchy of Finland, German Empire and Sweden Norway. Official international reserves, the means of official international payments, formerly consisted only of gold, and occasionally silver. But under the Bretton Woods system, the US dollar functioned as a reserve currency, so it too became part of a nation's official international reserve assets. From 1944 to 1968, the US dollar was convertible into gold through the Federal Reserve System, but after 1968 only central banks could convert dollars into gold from official gold reserves, and after 1973 no individual or institution could convert US dollars into gold from official gold reserves. Since 1973, no major currencies have been convertible into gold from official gold reserves. Individuals and institutions must now buy gold in private markets, just like other commodities. Even though US dollars and other currencies are no longer convertible into gold from official gold reserves, they still can function as official international reserves. Central banks throughout the world have sometimes cooperated in buying and selling official international reserves to attempt to influence exchange rates and avert financial crisis. For example, in the Baring crisis (the "Panic of 1890"), the Bank of England borrowed GBP 2 million from the Bank of France. The same was true for the Louvre Accord and the Plaza Accord in the post gold standard era.

Historically, especially before the 1997 Asian financial crisis, central banks had rather meager reserves (by today's standards) and were therefore subject to the whims of the market, of which there was accusations of hot money manipulation, however Japan was the exception. In the case of Japan, forex reserves began their ascent a decade earlier, shortly after the Plaza Accord in 1985, and were primarily used as a tool to weaken the surging yen. This effectively granted the United States a massive loan as they were almost exclusively invested in US Treasuries, which assisted the US to engage the Soviet Union in an arms race which ended with the latter's bankruptcy, and at the same time, turned Japan into the world's largest creditor and the US the largest debtor, as well as swelled Japan's domestic debt (Japan sold its own currency to fund the buildup of dollar based assets). By end of 1980, foreign assets of Japan were about 13% of GDP but by the end of 1989 had reached an unprecedented 62%.

The IMF proposed a new metric to assess reserves adequacy in 2011. The metric was based on the careful analysis of sources of outflow during crisis. Those liquidity needs are calculated taking in consideration the correlation between various components of the balance of payments and the probability of tail events. The higher the ratio of reserves to the developed metric, the lower is the risk of a crisis and the drop in consumption during a crisis. Besides that, the Fund does econometric analysis of several factors listed above and finds those reserves ratios are generally adequate among emerging markets. Reserves that are above the adequacy ratio can be used in other government funds invested in more risky assets such as sovereign wealth funds or as insurance to time of crisis, such as stabilization funds. If those were included, Norway, Singapore and Persian Gulf States would rank higher on these lists, and United Arab Emirates' estimated $627 billion Abu Dhabi Investment Authority would be second after China. Apart from high foreign exchange reserves, Singapore also has significant government and sovereign wealth funds including Temasek Holdings (last valued at US$375 billion) and GIC (last valued at US$440 billion). ECN is a unique electronic communication network that links different participants of the Forex market: banks, centralized exchanges, other brokers and companies and private investors.