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A currency [lower-alpha 1] in the most specific sense is money in any form when in use or circulation as a medium of exchange, especially circulating banknotes and coins. [1] [2] A more general definition is that a currency is a system of money (monetary units) in common use, especially for people in a nation. [3] Under this definition, U.S. dollars (US$), euros (€), Japanese yen (¥), and pounds sterling (£) are examples of currencies. These various currencies are recognized as stores of value and are traded between nations in foreign exchange markets, which determine the relative values of the different currencies. [4] Currencies in this sense are defined by governments, and each type has limited boundaries of acceptance.
Other definitions of the term "currency" appear in the respective synonymous articles: banknote, coin, and money. This article uses the definition which focuses on the currency systems of countries.
One can classify currencies into three monetary systems: fiat money, commodity money, and representative money, depending on what guarantees a currency's value (the economy at large vs. the government's physical metal reserves). Some currencies function as legal tender in certain political jurisdictions. Others simply get traded for their economic value.
Digital currency has arisen with the popularity of computers and the Internet. Whether digital notes and coins will be successfully developed remains dubious. [5] Decentralized digital currencies, such as cryptocurrencies are not legal currency, strictly speaking, since they are not issued by a government monetary authority and are not legal tender. Many warnings issued by various countries note the opportunities that cryptocurrencies create for illegal activities, such as money laundering and terrorism. [6] In 2014 the United States IRS issued a statement explaining that virtual currency is treated as property for Federal income-tax purposes and providing examples of how longstanding tax principles applicable to transactions involving property apply to virtual currency. [7]
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Originally money was a form of receipt, representing grain stored in temple granaries in Sumer in ancient Mesopotamia and in Ancient Egypt.
In this first stage of currency, metals were used as symbols to represent value stored in the form of commodities. This formed the basis of trade in the Fertile Crescent for over 1500 years. However, the collapse of the Near Eastern trading system pointed to a flaw: in an era where there was no place that was safe to store value, the value of a circulating medium could only be as sound as the forces that defended that store. A trade could only reach as far as the credibility of that military. By the late Bronze Age, however, a series of treaties had established safe passage for merchants around the Eastern Mediterranean, spreading from Minoan Crete and Mycenae in the northwest to Elam and Bahrain in the southeast. It is not known what was used as a currency for these exchanges, but it is thought that ox-hide shaped ingots of copper, produced in Cyprus, may have functioned as a currency.
It is thought that the increase in piracy and raiding associated with the Bronze Age collapse, possibly produced by the Peoples of the Sea, brought the trading system of oxhide ingots to an end. It was only the recovery of Phoenician trade in the 10th and 9th centuries BC that led to a return to prosperity, and the appearance of real coinage, possibly first in Anatolia with Croesus of Lydia and subsequently with the Greeks and Persians. In Africa, many forms of value store have been used, including beads, ingots, ivory, various forms of weapons, livestock, the manilla currency, and ochre and other earth oxides. The manilla rings of West Africa were one of the currencies used from the 15th century onwards to sell slaves. African currency is still notable for its variety, and in many places, various forms of barter still apply.
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These[ clarification needed ] factors led to the metal itself being the store of value: first silver, then both silver and gold, and at one point also bronze. Now we have copper coins and other non-precious metals as coins. Metals were mined, weighed, and stamped into coins. This was to assure the individual accepting the coin that he was getting a certain known weight of precious metal. Coins could be counterfeited, but the existence of standard coins also created a new unit of account, which helped lead to banking. Archimedes' principle provided the next link: coins could now be easily tested for their fine weight of the metal, and thus the value of a coin could be determined, even if it had been shaved, debased or otherwise tampered with (see Numismatics).
Most major economies using coinage had several tiers of coins of different values, made of copper, silver, and gold. Gold coins were the most valuable and were used for large purchases, payment of the military, and backing of state activities. Units of account were often defined as the value of a particular type of gold coin. Silver coins were used for midsized transactions, and sometimes also defined a unit of account, while coins of copper or silver, or some mixture of them (see debasement), might be used for everyday transactions. This system had been used in ancient India since the time of the Mahajanapadas. The exact ratios between the values of the three metals varied greatly between different eras and places; for example, the opening of silver mines in the Harz mountains of central Europe made silver relatively less valuable, as did the flood of New World silver after the Spanish conquests. However, the rarity of gold consistently made it more valuable than silver, and likewise silver was consistently worth more than copper.
In premodern China, the need for credit and for a medium of exchange that was less physically cumbersome than large numbers of copper coins led to the introduction of paper money, i.e. banknotes. Their introduction was a gradual process that lasted from the late Tang dynasty (618–907) into the Song dynasty (960–1279). It began as a means for merchants to exchange heavy coinage for receipts of deposit issued as promissory notes by wholesalers' shops. These notes were valid for temporary use in a small regional territory. In the 10th century, the Song dynasty government began to circulate these notes amongst the traders in its monopolized salt industry. The Song government granted several shops the right to issue banknotes, and in the early 12th century the government finally took over these shops to produce state-issued currency. Yet the banknotes issued were still only locally and temporarily valid: it was not until the mid 13th century that a standard and uniform government issue of paper money became an acceptable nationwide currency. The already widespread methods of woodblock printing and then Bi Sheng's movable type printing by the 11th century were the impetus for the mass production of paper money in premodern China.
At around the same time in the medieval Islamic world, a vigorous monetary economy was created during the 7th–12th centuries on the basis of the expanding levels of circulation of a stable high-value currency (the dinar). Innovations introduced by Muslim economists, traders and merchants include the earliest uses of credit, [8] cheques, promissory notes, [9] savings accounts, transaction accounts, loaning, trusts, exchange rates, the transfer of credit and debt, [10] and banking institutions for loans and deposits. [10]
In Europe, paper money was first introduced on a regular basis in Sweden in 1661 (although Washington Irving records an earlier emergency use of it, by the Spanish in a siege during the Conquest of Granada). As Sweden was rich in copper, many copper coins were in circulation, but its relatively low value necessitated extraordinarily big coins, often weighing several kilograms.
The advantages of paper currency were numerous: it reduced the need to transport gold and silver, which was risky; it facilitated loans of gold or silver at interest, since the underlying specie (money in the form of gold or silver coins rather than notes) never left the possession of the lender until someone else redeemed the note; and it allowed a division of currency into credit- and specie-backed forms. It enabled the sale of stock in joint-stock companies and the redemption of those shares in a paper.
But there were also disadvantages. First, since a note has no intrinsic value, there was nothing to stop issuing authorities from printing more notes than they had specie to back them with. Second, because it increased the money supply, it increased inflationary pressures, a fact observed by David Hume in the 18th century. Thus paper money would often lead to an inflationary bubble, which could collapse if people began demanding hard money, causing the demand for paper notes to fall to zero. The printing of paper money was also associated with wars, and financing of wars, and therefore regarded as part of maintaining a standing army. For these reasons, paper currency was held in suspicion and hostility in Europe and America. It was also addictive since the speculative profits of trade and capital creation were quite large. Major nations established mints to print money and mint coins, and branches of their treasury to collect taxes and hold gold and silver stock.
At that time, both silver and gold were considered a legal tender and accepted by governments for taxes. However, the instability in the exchange rate between the two grew over the course of the 19th century, with the increases both in the supply of these metals, particularly silver, and in trade. The parallel use of both metals is called bimetallism, and the attempt to create a bimetallic standard where both gold and silver backed currency remained in circulation occupied the efforts of inflationists. Governments at this point could use currency as an instrument of policy, printing paper currency such as the United States greenback, to pay for military expenditures. They could also set the terms at which they would redeem notes for specie, by limiting the amount of purchase, or the minimum amount that could be redeemed.
By 1900, most of the industrializing nations were on some form of gold standard, with paper notes and silver coins constituting the circulating medium. Private banks and governments across the world followed Gresham's law: keeping the gold and silver they received but paying out in notes. This did not happen all around the world at the same time, but occurred sporadically, generally in times of war or financial crisis, beginning in the early 20th century and continuing across the world until the late 20th century, when the regime of floating fiat currencies came into force. One of the last countries to break away from the gold standard was the United States in 1971, an action is known as the Nixon shock. No country has an enforceable gold standard or silver standard currency system.
A banknote (more commonly known as a bill in the United States and Canada) is a type of currency and is commonly used as legal tender in many jurisdictions. Together with coins, banknotes make up the cash form of all money. Banknotes are mostly paper, but Australia's Commonwealth Scientific and Industrial Research Organisation developed a polymer currency in the 1980s; it went into circulation on the nation's bicentenary in 1988. [11] Polymer banknotes had already been introduced in the Isle of Man in 1983. As of 2016, polymer currency is used in over 20 countries (over 40 if counting commemorative issues), [12] and dramatically increases the life span of banknotes and reduces counterfeiting.
The currency used is based on the concept of lex monetae; that a sovereign state decides which currency it shall use. The International Organization for Standardization has introduced a system of three-letter codes (ISO 4217) to denote currency (as opposed to simple names or currency signs), in order to remove the confusion arising because there are dozens of currencies called the dollar and several called the franc. Even the "pound" is used in nearly a dozen different countries; most of these are tied to the pound sterling, while the remainder has varying values. In general, the three-letter code uses the ISO 3166-1 country code for the first two letters and the first letter of the name of the currency (D for dollar, for instance) as the third letter. United States currency, for instance, is globally referred to as USD. The former currencies include the marks that used formerly in Germany and Finland. [13]
The International Monetary Fund uses a different system when referring to national currencies.
Distinct from centrally controlled government-issued currencies, private decentralized trust networks support alternative currencies such as Bitcoin, Ethereum, Litecoin, Monero, Peercoin or Dogecoin, which are classified as cryptocurrency since the transfer of value is assured through cryptographic signatures validated by all users. There are also branded currencies, for example 'obligation' based stores of value, such as quasi-regulated BarterCard, Loyalty Points (Credit Cards, Airlines) or Game-Credits (MMO games) that are based on reputation of commercial products, or highly regulated 'asset-backed' 'alternative currencies' such as mobile-money schemes like MPESA (called E-Money Issuance). [14]
The currency may be Internet-based and digital, for instance, bitcoin [15] is not tied to any specific country, or the IMF's SDR that is based on a basket of currencies (and assets held).
Possession and sale of alternative forms of currencies is often outlawed by governments in order to preserve the legitimacy of the constitutional currency for the benefit of all citizens. For example, Article I, section 8, clause 5 of the United States Constitution delegates to Congress the power to coin money and to regulate the value thereof. This power was delegated to Congress in order to establish and preserve a uniform standard of value and to insure a singular monetary system for all purchases and debts in the United States, public and private. Along with the power to coin money, the United States Congress has the concurrent power to restrain the circulation of money which is not issued under its own authority in order to protect and preserve the constitutional currency for the benefit of all citizens of the nation. It is a violation of federal law for individuals, or organizations to create private coin or currency systems to compete with the official coinage and currency of the United States. [16]
Rank | Currency | ISO 4217 code (symbol) | % of daily trades (bought or sold) (April 2019) |
---|---|---|---|
1 | ![]() | USD (US$) | 88.3% |
2 | ![]() | EUR (€) | 32.3% |
3 | ![]() | JPY (¥) | 16.8% |
4 | ![]() | GBP (£) | 12.8% |
5 | ![]() | AUD (A$) | 6.8% |
6 | ![]() | CAD (C$) | 5.0% |
7 | ![]() | CHF (CHF) | 5.0% |
8 | ![]() | CNY (元) | 4.3% |
9 | ![]() | HKD (HK$) | 3.5% |
10 | ![]() | NZD (NZ$) | 2.1% |
11 | ![]() | SEK (kr) | 2.0% |
12 | ![]() | KRW (₩) | 2.0% |
13 | ![]() | SGD (S$) | 1.8% |
14 | ![]() | NOK (kr) | 1.8% |
15 | ![]() | MXN ($) | 1.7% |
16 | ![]() | INR (₹) | 1.7% |
17 | ![]() | RUB (₽) | 1.1% |
18 | ![]() | ZAR (R) | 1.1% |
19 | ![]() | TRY (₺) | 1.1% |
20 | ![]() | BRL (R$) | 1.1% |
21 | ![]() | TWD (NT$) | 0.9% |
22 | ![]() | DKK (kr) | 0.6% |
23 | ![]() | PLN (zł) | 0.6% |
24 | ![]() | THB (฿) | 0.5% |
25 | ![]() | IDR (Rp) | 0.4% |
26 | ![]() | HUF (Ft) | 0.4% |
27 | ![]() | CZK (Kč) | 0.4% |
28 | ![]() | ILS (₪) | 0.3% |
29 | ![]() | CLP (CLP$) | 0.3% |
30 | ![]() | PHP (₱) | 0.3% |
31 | ![]() | AED (د.إ) | 0.2% |
32 | ![]() | COP (COL$) | 0.2% |
33 | ![]() | SAR (﷼) | 0.2% |
34 | ![]() | MYR (RM) | 0.1% |
35 | ![]() | RON (L) | 0.1% |
Other | 2.2% | ||
Total [note 1] | 200.0% |
In most cases, a central bank has the exclusive power to issue all forms of currency, including coins and banknotes (fiat money), and to restrain the circulation alternative currencies for its own area of circulation (a country or group of countries); it regulates the production of currency by banks (credit) through monetary policy.
An exchange rate is a price at which two currencies can be exchanged against each other. This is used for trade between the two currency zones. Exchange rates can be classified as either floating or fixed. In the former, day-to-day movements in exchange rates are determined by the market; in the latter, governments intervene in the market to buy or sell their currency to balance supply and demand at a static exchange rate.
In cases where a country has control of its own currency, that control is exercised either by a central bank or by a Ministry of Finance. The institution that has control of monetary policy is referred to as the monetary authority. Monetary authorities have varying degrees of autonomy from the governments that create them. A monetary authority is created and supported by its sponsoring government, so independence can be reduced by the legislative or executive authority that creates it.
Several countries can use the same name for their own separate currencies (for example, a dollar in Australia, Canada, and the United States). By contrast, several countries can also use the same currency (for example, the euro or the CFA franc), or one country can declare the currency of another country to be legal tender. For example, Panama and El Salvador have declared US currency to be legal tender, and from 1791 to 1857, Spanish silver coins were legal tender in the United States. At various times countries have either re-stamped foreign coins or used currency boards, issuing one note of currency for each note of a foreign government held, as Ecuador currently does.
Each currency typically has a main currency unit (the dollar, for example, or the euro) and a fractional unit, often defined as 1⁄100 of the main unit: 100 cents = 1 dollar, 100 centimes = 1 franc, 100 pence = 1 pound, although units of 1⁄10 or 1⁄1000 occasionally also occur. Some currencies do not have any smaller units at all, such as the Icelandic króna.
Mauritania and Madagascar are the only remaining countries that have theoretical fractional units not based on the decimal system; instead, the Mauritanian ouguiya is in theory divided into 5 khoums, while the Malagasy ariary is theoretically divided into 5 iraimbilanja. In these countries, words like dollar or pound "were simply names for given weights of gold". [18] Due to inflation khoums and iraimbilanja have in practice fallen into disuse. (See non-decimal currencies for other historic currencies with non-decimal divisions.)
Subject to variation around the world, local currency can be converted to another currency or vice versa with or without central bank/government intervention. Such conversions take place in the foreign exchange market. Based on the above restrictions or free and readily conversion features, currencies are classified as:
In economics, a local currency is a currency not backed by a national government and intended to trade only in a small area. Advocates such as Jane Jacobs argue that this enables an economically depressed region to pull itself up, by giving the people living there a medium of exchange that they can use to exchange services and locally produced goods (in a broader sense, this is the original purpose of all money). Opponents of this concept argue that local currency creates a barrier that can interfere with economies of scale and comparative advantage and that in some cases they can serve as a means of tax evasion.
Local currencies can also come into being when there is economic turmoil involving the national currency. An example of this is the Argentinian economic crisis of 2002 in which IOUs issued by local governments quickly took on some of the characteristics of local currencies.
One of the best examples of a local currency is the original LETS currency, founded on Vancouver Island in the early 1980s. In 1982, the Canadian Central Bank’s lending rates ran up to 14% which drove chartered bank lending rates as high as 19%. The resulting currency and credit scarcity left island residents with few options other than to create a local currency. [20]
The following table are estimates of the 15 most frequently used currencies in world payments from January 2018 and August 2019 by SWIFT. [21] [22] [23]
Rank | Currency | January 2018 | Currency | August 2019 |
---|---|---|---|---|
World | 100.00% | World | 100.00% | |
1 | ![]() | 38.53% | ![]() | 42.52% |
2 | ![]() | 32.75% | ![]() | 32.06% |
3 | ![]() | 7.22% | ![]() | 6.21% |
4 | ![]() | 2.80% | ![]() | 3.61% |
5 | ![]() | 1.66% | ![]() | 2.22% |
6 | ![]() | 1.51% | ![]() | 1.76% |
7 | ![]() | 1.42% | ![]() | 1.57% |
8 | ![]() | 1.38% | ![]() | 1.48% |
9 | ![]() | 1.32% | ![]() | 1.00% |
10 | ![]() | 1.01% | ![]() | 0.98% |
11 | ![]() | 0.95% | ![]() | 0.98% |
12 | ![]() | 0.85% | ![]() | 0.79% |
13 | ![]() | 0.64% | ![]() | 0.71% |
14 | ![]() | 0.47% | ![]() | 0.56% |
15 | ![]() | 0.41% | ![]() | 0.43% |
Seigniorage, also spelled seignorage or seigneurage, is the difference between the value of money and the cost to produce and distribute it. The term can be applied in two ways:
The Australian dollar is the currency of Australia, including its external territories: Christmas Island, Cocos (Keeling) Islands, and Norfolk Island. It is officially used as currency by three independent Pacific Island states: Kiribati, Nauru, and Tuvalu. It is legal tender in Australia. Within Australia, it is almost always abbreviated with the dollar sign ($), with A$ or AU$ sometimes used to distinguish it from other dollar-denominated currencies. The $ symbol precedes the amount. It is subdivided into 100 cents.
The Canadian dollar is the currency of Canada. It is abbreviated with the dollar sign $, or sometimes CA$, Can$ or C$ to distinguish it from other dollar-denominated currencies. It is divided into 100 cents (¢).
A banknote is a type of negotiable promissory note, made by a bank or other licensed authority, payable to the bearer on demand. Banknotes were originally issued by commercial banks, which were legally required to redeem the notes for legal tender when presented to the chief cashier of the originating bank. These commercial banknotes only traded at face value in the market served by the issuing bank. Commercial banknotes have primarily been replaced by national banknotes issued by central banks or monetary authorities.
Legal tender is a form of money that courts of law are required to recognize as satisfactory payment for any monetary debt. Each jurisdiction determines what is legal tender, but essentially it is anything which when offered ("tendered") in payment of a debt extinguishes the debt. There is no obligation on the creditor to accept the tendered payment, but the act of tendering the payment in legal tender discharges the debt.
Pound sterling, known in some contexts simply as the pound or sterling, is the official currency of the United Kingdom, Jersey, Guernsey, the Isle of Man, Gibraltar, South Georgia and the South Sandwich Islands, the British Antarctic Territory, and Tristan da Cunha. It is subdivided into 100 pence. The Pound sterling is the oldest currency in continuous use. Some nations that do not use sterling also have currencies called the pound.
The Hong Kong dollar is the official currency of Hong Kong. It is subdivided into 100 cents. The Hong Kong Monetary Authority is the governmental currency board and also the de facto central bank for Hong Kong and the Hong Kong dollar.
The Singapore dollar is the official currency of Singapore. It is divided into 100 cents. It is normally abbreviated with the dollar sign $, or S$ to distinguish it from other dollar-denominated currencies. The Monetary Authority of Singapore issues the banknotes and coins of the Singapore dollar.
The Indian rupee is the official currency of India. The rupee is subdivided into 100 paise, though as of 2019, coins of denomination of 1 rupee is the lowest value in use. The issuance of the currency is controlled by the Reserve Bank of India. The Reserve Bank manages currency in India and derives its role in currency management on the basis of the Reserve Bank of India Act, 1934.
The Australian pound was the currency of Australia from 1910 until 14 February 1966, when it was replaced by the Australian dollar. As with other £sd currencies, it was subdivided into 20 shillings, each of 12 pence.
The Bermudian dollar is the official currency of the British Overseas Territory of Bermuda. It is subdivided into 100 cents. The Bermudian dollar is not normally traded outside Bermuda, and is pegged to the United States dollar at a one-to-one ratio. Both currencies circulate in Bermuda on an equal basis.
The silver standard is a monetary system in which the standard economic unit of account is a fixed weight of silver. The silver specie standard was widespread from the fall of the Byzantine Empire until the 19th century. Following the discovery in the 16th century of large deposits of silver at the Cerro Rico in Potosí, Bolivia, an international silver standard came into existence in conjunction with the Spanish pieces of eight. These silver dollar coins played the role of an international trading currency for nearly four hundred years.
A private currency is a currency issued by a private entity, be it an individual, a commercial business, a nonprofit or decentralized common enterprise. It is often contrasted with fiat currency issued by governments or central banks. In many countries, the issuance of private paper currencies and/or the minting of metal coins intended to be used as currency may even be a criminal act such as in the United States. Digital cryptocurrency is sometimes treated as an asset instead of a currency. Cryptocurrency is illegal as a currency in a few countries.
Canada has an extensive history with regard to its currencies. Prior to European contact, indigenous peoples in Canada used items such as wampum and furs for trading purposes, which continued when trade with Europeans began.
Japanese currency has a history covering the period from the 8th century AD to the present. After the traditional usage of rice as a currency medium, Japan adopted currency systems and designs from China before developing a separate system of its own.
Money is any item or verifiable record that is generally accepted as payment for goods and services and repayment of debts, such as taxes, in a particular country or socio-economic context. The main functions of money are distinguished as: a medium of exchange, a unit of account, a store of value and sometimes, a standard of deferred payment. Any item or verifiable record that fulfils these functions can be considered as money.
Korean currency dates back as far as the Goryeo dynasty (918–1392) when the first coins were minted. The coins, cast in both bronze and iron, were called tongbo and jungbo. Additionally, silver vases called ŭnbyŏng were widely used and circulated as a currency among the aristocracy of Goryeo.
The United States dollar is the official currency of the United States and its territories per the Coinage Act of 1792. One dollar is divided into 100 cents, or into 1000 mills for accounting and taxation purposes. The Coinage Act of 1792 created a decimal currency by creating the dime, nickel, and penny coins, as well as the dollar, half dollar, and quarter dollar coins, all of which are still minted in 2020.
Fiat money is a currency established as money, often by government regulation, that does not have intrinsic value. Fiat money does not have use value, and has value only because a government maintains its value, or because parties engaging in exchange agree on its value. It was introduced as an alternative to commodity money and representative money. Representative money is similar to fiat money, but it represents a claim on a commodity.
The history of Philippine money covers currency in use before the Hispanic era with gold Piloncitos and other commodities in circulation, as well as the adoption of the peso during the Hispanic era and afterwards.
currency [...] 1. Money in any form when in actual use as a medium of exchange, especially circulating paper money.
Determining the relative values of different currencies is the role of the foreign-exchange markets.
One of the most common actions identified across the surveyed jurisdictions is government-issued notices about the pitfalls of investing in the cryptocurrency markets. [...] Many of the warnings issued by various countries also note the opportunities that cryptocurrencies create for illegal activities, such as money laundering and terrorism.
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