A currency is a standardization of money in any form, in use or circulation as a medium of exchange, for example banknotes and coins. A more general definition is that a currency is a system of money in common use within a specific environment over time, especially for people in a nation state. Under this definition, the British Pound sterling (£), euros (€), Japanese yen (¥), and U.S. dollars (US$) are examples of (government-issued) fiat currencies. Currencies may act as stores of value and be traded between nations in foreign exchange markets, which determine the relative values of the different currencies. Currencies in this sense are either chosen by users or decreed by governments, and each type has limited boundaries of acceptance; i.e., legal tender laws may require a particular unit of account for payments to government agencies.
The euro is the official currency of 20 of the 27 member states of the European Union. This group of states is officially known as the euro area or, more commonly, the eurozone. The euro is divided into 100 euro cents.
The economy of Japan is a highly developed/advanced social market economy, often referred to as an East Asian model. It is the fourth-largest economy in the world by nominal GDP behind the United States, China, and Germany, and the fourth-largest by purchasing power parity (PPP) as well, after India instead of Germany. It constituted 4.2% of the world's economy on a nominal basis in 2022. According to the IMF, the country's per capita GDP (PPP) was at $54,184 (2024). Due to a volatile currency exchange rate, Japan's nominal GDP as measured in dollars fluctuates sharply.
The yen is the official currency of Japan. It is the third-most traded currency in the foreign exchange market, after the United States dollar and the euro. It is also widely used as a third reserve currency after the US dollar and the euro.
A reserve currency is a foreign currency that is held in significant quantities by central banks or other monetary authorities as part of their foreign exchange reserves. The reserve currency can be used in international transactions, international investments and all aspects of the global economy. It is often considered a hard currency or safe-haven currency.
In finance, an exchange rate is the rate at which one currency will be exchanged for another currency. Currencies are most commonly national currencies, but may be sub-national as in the case of Hong Kong or supra-national as in the case of the euro.
Currency substitution is the use of a foreign currency in parallel to or instead of a domestic currency.
The ruble or rouble is the currency of the Russian Federation. The ruble is subdivided into 100 kopecks. It is used in Russia as well as in the parts of Ukraine under Russian military occupation and in Russian-occupied parts of Georgia.
The Plaza Accord was a joint agreement signed on September 22, 1985, at the Plaza Hotel in New York City, between France, West Germany, Japan, the United Kingdom, and the United States, to depreciate the U.S. dollar in relation to the French franc, the German Deutsche Mark, the Japanese yen and the British pound sterling by intervening in currency markets. The U.S. dollar depreciated significantly from the time of the agreement until it was replaced by the Louvre Accord in 1987. Some commentators believe the Plaza Accord contributed to the Japanese asset price bubble of the late 1980s.
A managed float regime, also known as a dirty float, is a type of exchange rate regime where a currency's value is allowed to fluctuate in response to foreign-exchange market mechanisms, but the central bank or monetary authority of the country intervenes occasionally to stabilize or steer the currency's value in a particular direction. This is in contrast to a pure float where the value is entirely determined by market forces, and a fixed exchange rate where the value is pegged to another currency or a basket of currencies.
Foreign exchange 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.
In macroeconomics and economic policy, a floating exchange rate is a type of exchange rate regime in which a currency's value is allowed to fluctuate in response to foreign exchange market events. A currency that uses a floating exchange rate is known as a floating currency, in contrast to a fixed currency, the value of which is instead specified in terms of material goods, another currency, or a set of currencies.
Endaka or Endaka Fukyo is a state in which the value of the Japanese yen is high compared to other currencies. Since the economy of Japan is highly dependent on exports, this can cause Japan to fall into an economic recession.
Currency intervention, also known as foreign exchange market intervention or currency manipulation, is a monetary policy operation. It occurs when a government or central bank buys or sells foreign currency in exchange for its own domestic currency, generally with the intention of influencing the exchange rate and trade policy.
B yen was a colloquial term used to refer to a form of military scrip used in post-war US-Occupied Okinawa from April 15, 1946, to September 1958. Officially, it was called B type military scrip.
The international status and usage of the euro has grown since its launch in 1999. When the euro formally replaced 12 currencies on 1 January 2002, it inherited their use in territories such as Montenegro and replaced minor currencies tied to pre-euro currencies, such as in Monaco. Four small states have been given a formal right to use the euro, and to mint their own coins, but all other usage outside the eurozone has been unofficial. With or without an agreement, these countries, unlike those in the eurozone, do not participate in the European Central Bank or the Eurogroup.
The 1 yen note (1円券) was a denomination of Japanese yen in seven different series from 1872 to 1946 for use in commerce. These circulated with the 1 yen coin until 1914, and briefly again before the notes were suspended in 1958. Notes from the Japanese government, known as "government notes," were the first to be issued through a company in Germany. Because they were being counterfeited, they were replaced by a new series which included the first portrait on a Japanese banknote. Almost concurrently, the government established a series of national banks modeled after the system in the United States. These national banks were private entities that also released their own notes which were later convertible into gold and silver. All three of these series came to an end due to massive inflation from the Satsuma Rebellion in 1877. National bank notes were re-issued as fiat currency before the national banks themselves were abolished. Both national bank and government one yen notes were gradually redeemed for Bank of Japan note starting in 1885. This redemption process lasted until all three series were abolished in 1899.
The Euro Currency Index (EUR_I) represents the arithmetic ratio of four major currencies against the Euro: the American dollar, British sterling, the Japanese yen and the Swiss franc. All ratios are expressed in units of currency per Euro. The index was launched in 2004 by the exchange portal Stooq.com. Underlying are 100 points on 4 January 1971. Before the introduction of the European single currency on 1 January 1999 an exchange rate of 1 euro = DM 1.95583 was calculated.
The financial crisis in Russia in 2017 was the result of the sharp devaluation of the Russian rouble beginning in the second half of 2014. A decline in confidence in the Russian economy caused investors to sell off their Russian assets, which led to a decline in the value of the Russian rouble and sparked fears of a financial crisis. The lack of confidence in the Russian economy stemmed from at least two major sources. The first is the fall in the price of oil in 2014. Crude oil, a major export of Russia, declined in price by nearly 50% between its yearly high in June 2014 and 16 December 2014. The second is the result of international economic sanctions imposed on Russia following Russia's annexation of Crimea, the war in Donbas and the broader Russo-Ukrainian War.
In 1945, China cofounded the International Monetary Fund (IMF) with 34 other nations. China was initially represented by the Republic of China. In April 1980, representation transferred to the People's Republic of China. The Chinese-IMF relationship mainly operates around affairs associated with IMF governance and the IMF Special Drawing Rights (SDR).
