United States dollar

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United States dollar
USDnotesNew.png 98 quarter obverse.png
Federal Reserve NotesQuarter dollar (25 cents) coin (obverse)
ISO 4217
CodeUSD
Number840
Exponent2
Denominations
Superunit
 4stella
 10eagle
 100union (slang)
 1000grand, rack (slang)
Subunit
 ​1⁄4quarter
 ​1⁄10dime
 ​1⁄20nickel or half dime
 ​1⁄100cent or penny
 ​1⁄1000mill
Symbol$
 cent or penny¢
 mill₥
Nickname
Banknotes
 Freq. used$1, $5, $10, $20, $50, $100
 Rarely used$2 (still printed); $500, $1,000, $5,000, $10,000 (discontinued, still legal tender)
Coins
 Freq. used1¢, 5¢, 10¢, 25¢
 Rarely used50¢, $1 (still minted); ½¢, 2¢, 3¢, 3¢, 20¢, $2.50, $3, $20 (discontinued, still legal tender); $5, $10 (legal tender, now commemorative only)
Demographics
Date of introductionApril 2, 1792
 Source[1]
ReplacedContinental currency
Various foreign currencies, including:
Pound sterling
Spanish dollar
User(s)
Issuance
Central bankFederal Reserve System
 Websitewww.federalreserve.gov
PrinterBureau of Engraving and Printing
 Websitewww.moneyfactory.gov
MintUnited States Mint
 Websitewww.usmint.gov
Valuation
Inflation2.29% (December 2019)
 Sourceinflationdata.com
 MethodCPI
Pegged by

The United States dollar (sign: $; code: USD; also abbreviated US$ and referred to as the dollar, U.S. dollar, or American 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 (symbol: ¢) or 1000 mills (for accounting purposes and for taxing; symbol: ₥). The Coinage Act of 1792 created a decimal currency by creating the following coins: tenth dollar, one-twentieth dollar, one-hundredth dollar. In addition the act created the dollar, half dollar, and quarter dollar coins. All of these coins are still minted in 2020.

In addition, several forms of paper money were introduced by Congress over the years. The latest of these, the Federal Reserve Note, was authorized by the Federal Reserve Act of 1913, while all existing U.S. currency remains legal tender.[5] Issuance of the previous form of the currency (U.S. notes) was discontinued in January 1971.[6] As a result, currently circulating paper money consists primarily of Federal Reserve Notes that are denominated in United States dollars (12 U.S.C. § 418).

Since the suspension in 1971[7] of convertibility of paper U.S. currency into any precious metal, the U.S. dollar is de facto fiat money.[8] As it is the most used in international transactions, the U.S. dollar is the world's primary reserve currency.[9] Several countries use it as their official currency, and in many others it is the de facto currency.[10] Besides the United States, it is also used as the sole currency in two British Overseas Territories in the Caribbean: the British Virgin Islands and Turks and Caicos Islands. A few countries use the Federal Reserve Notes for paper money, while still minting their own coins, or also accept U.S. dollar coins (such as the Sacagawea or presidential dollar). As of January 31, 2019, there are approximately $1.7 trillion in circulation, of which $1.65 trillion is in the Federal Reserve Notes (the remaining $50 billion is in the form of U.S. notes and coins).[11]

The U.S. dollar as a currency is often referred to as the greenback by foreign exchange traders and the financial press in other countries, such as Australia, New Zealand, South Africa, and India.[12][13][14][15][16]

Overview[edit]

Article I, Section 8 of the U.S. Constitution provides that the Congress has the power "To coin money".[17] Laws implementing this power are currently codified at 31 U.S.C. § 5112. Section 5112 prescribes the forms in which the United States dollars should be issued.[18] These coins are both designated in Section 5112 as "legal tender" in payment of debts.[18] The Sacagawea dollar is one example of the copper alloy dollar. The pure silver dollar is known as the American Silver Eagle. Section 5112 also provides for the minting and issuance of other coins, which have values ranging from one cent to 100 dollars.[18] These other coins are more fully described in Coins of the United States dollar.

The Constitution provides that "a regular Statement and Account of the Receipts and Expenditures of all public Money shall be published from time to time".[19] That provision of the Constitution is made specific by Section 331 of Title 31 of the United States Code.[20] The sums of money reported in the "Statements" are currently being expressed in U.S. dollars (for example, see the 2009 Financial Report of the United States Government).[21] The U.S. dollar may therefore be described as the unit of account of the United States.

The word "dollar" is one of the words in the first paragraph of Section 9 of Article I of the Constitution. There, "dollars" is a reference to the Spanish milled dollar, a coin that had a monetary value of 8 Spanish units of currency, or reales. In 1792 the U.S. Congress passed a Coinage Act. Section 9 of that act authorized the production of various coins, including "DOLLARS OR UNITS—each to be of the value of a Spanish milled dollar as the same is now current, and to contain three hundred and seventy-one grains and four sixteenth parts of a grain of pure, or four hundred and sixteen grains of standard silver". Section 20 of the act provided, "That the money of account of the United States shall be expressed in dollars, or units... and that all accounts in the public offices and all proceedings in the courts of the United States shall be kept and had in conformity to this regulation". In other words, this act designated the United States dollar as the unit of currency of the United States.

Unlike the Spanish milled dollar, the U.S. dollar has been based upon a decimal system of values since the time of the Continental Congress.[22] This decimal system was again described in the Coinage Act of 1792: in addition to the dollar, the Act officially established monetary units of mill or one-thousandth of a dollar (symbol ₥), cent or one-hundredth of a dollar (symbol ¢), dime or one-tenth of a dollar, and eagle or ten dollars, with prescribed weights and composition of gold, silver, or copper for each.[23] It was proposed in the mid-1800s that one hundred dollars be known as a union, but no union coins were ever struck and only patterns for the $50 half union exist. However, only cents are in everyday use as divisions of the dollar[24]; "dime" is used solely as the name of the coin with the value of 10¢, while "eagle" and "mill" are largely unknown to the general public, though mills are sometimes used in matters of tax levies,[25] and gasoline prices are usually in the form of $X.XX9 per gallon, e.g., $3.599, more commonly written as $3.59​9⁄10. When currently issued in circulating form, denominations equal to or less than a dollar are emitted as U.S. coins while denominations equal to or greater than a dollar are emitted as Federal Reserve Notes (with the exception of gold, silver, platinum and palladium coins valued up to $100 as legal tender, but worth far more as bullion). Both one-dollar coins and notes are produced today, although the note form is significantly more common. In the past, "paper money" was occasionally issued in denominations less than a dollar (fractional currency) and gold coins were issued for circulation up to the value of $20 (known as the "double eagle", discontinued in the 1930s). The term eagle was used in the Coinage Act of 1792 for the denomination of ten dollars, and subsequently was used in naming gold coins. Paper currency less than one dollar in denomination, known as "fractional currency", was also sometimes pejoratively referred to as "shinplasters". In 1854, James Guthrie, then Secretary of the Treasury, proposed creating $100, $50 and $25 gold coins, which were referred to as a "Union", "Half Union", and "Quarter Union",[26] thus implying a denomination of 1 Union = $100.

Series of 1917 $1 United States bill

Today, USD notes are made from cotton fiber paper, unlike most common paper, which is made of wood fiber. U.S. coins are produced by the United States Mint. U.S. dollar banknotes are printed by the Bureau of Engraving and Printing and, since 1914, have been issued by the Federal Reserve. The "large-sized notes" issued before 1928 measured 7.42 by 3.125 inches (188.5 by 79.4 mm); small-sized notes, introduced that year, measure 6.14 by 2.61 by 0.0043 inches (155.96 by 66.29 by 0.11 mm).[citation needed] When the current, smaller sized U.S. currency was introduced it was referred to as Philippine-sized currency because the Philippines had previously adopted the same size for its legal currency, the Philippine peso.[citation needed]

Etymology[edit]

Further information: Dollar

In the 16th century, Count Hieronymus Schlick of Bohemia began minting coins known as Joachimstalers, named for Joachimstal, the valley where the silver was mined. The German word for valley is thal, or nowadays usually Tal (cognate with "dale" in English). St. Joachim's Valley is now known as Jáchymov, in the Czech Republic (then part of the Kingdom of Bohemia).[27] Joachimstaler was later shortened to the German Taler, a word that eventually found its way into many languages, including Danish and Swedish as daler, Norwegian as dalar and daler, Dutch as daler or daalder, Ethiopian as talari, Hungarian as tallér, Italian as tallero, and English as dollar.[27] Alternatively, thaler is said to come from the German coin Guldengroschen ("great guilder", being of silver but equal in value to a gold guilder), minted from the silver from Joachimsthal.

The coins minted at Joachimsthal soon lent their name to other coins of similar size and weight from other places. One such example, was a Dutch coin depicting a lion, hence its Dutch name leeuwendaler (in English: "lion dollar").

The leeuwendaler was authorized to contain 427.16 grains of .75 fine silver and passed locally for between 36 and 42 stuivers. It was lighter than the large-denomination coins then in circulation, thus it was more advantageous for a Dutch merchant to pay a foreign debt in leeuwendalers and it became the coin of choice for foreign trade.

The leeuwendaler was popular in the Dutch East Indies and in the Dutch North American New Netherland Colony (today the New York metropolitan area), and circulated throughout the Thirteen Colonies during the 17th and early 18th centuries. It was also separately popular throughout Eastern Europe, where it led to the current Romanian and Moldovan currency being called leu (literally "lion").

Among the English-speaking community, the Dutch coin came to be popularly known as lion dollar – and is the origin of the English dollar.[28] The modern American-English pronunciation of dollar is still remarkably close to the 17th-century Dutch pronunciation of daler.[29]

By analogy with this lion dollar, Spanish pesos – with the same weight and shape as the lion dollar – came to be known as Spanish dollars.[29] By the mid-18th century, the lion dollar had been replaced by the Spanish dollar, the famous "piece of eight", which was distributed widely in the Spanish colonies in the New World and in the Philippines.[30] Eventually, dollar became the name of the official American currency.

Nicknames[edit]

See also: Slang terms for money § United States

The colloquialism "buck"(s) (much like the British word "quid"(s, pl) for the pound sterling) is often used to refer to dollars of various nations, including the U.S. dollar. This term, dating to the 18th century, may have originated with the colonial leather trade. It may also have originated from a poker term.[31]

"Greenback" is another nickname originally applied specifically to the 19th-century Demand Note dollars created by Abraham Lincoln to finance the costs of the Civil War for the North.[32] The original note was printed in black and green on the back side. It is still used to refer to the U.S. dollar (but not to the dollars of other countries). Other well-known names of the dollar as a whole in denominations include "greenmail", "green" and "dead presidents" (the last because deceased presidents are pictured on most bills).

The term greenback is also used by foreign exchange traders with reference to the U.S. dollar as a currency,[12] and by the financial press in other countries, such as Australia,[13] New Zealand,[14] South Africa,[15] and India.[16]

A "grand", sometimes shortened to simply "G", is a common term for the amount of $1,000. The suffix "K" or "k" (from "kilo-") is also commonly used to denote this amount (such as "$10k" to mean $10,000). However, the $1,000 note is no longer in general use. A "large" or "stack", it is usually a reference to a multiple of $1,000 (such as "fifty large" meaning $50,000). The $100 note is nicknamed "Benjamin", "Benji", "Ben", or "Franklin" (after Benjamin Franklin), "C-note" (C being the Roman numeral for 100), "Century note" or "bill" (e.g. "two bills" being $200). The $50 note is occasionally called a "yardstick" or a "grant" (after President Ulysses S. Grant, pictured on the obverse). The $20 note is referred to as a "double sawbuck", "Jackson" (after Andrew Jackson), or "double eagle". The $10 note is referred to as a "sawbuck", "ten-spot" or "Hamilton" (after Alexander Hamilton). The $5 note as "Lincoln", "fin", "fiver" or "five-spot". The infrequently-used $2 note is sometimes called "deuce", "Tom", or "Jefferson" (after Thomas Jefferson). The $1 note as a "single" or "buck". The dollar has also been referred to as a "bone" and "bones" in plural (e.g. "twenty bones" is equal to $20). The newer designs, with portraits displayed in the main body of the obverse (rather than in cameo insets), upon paper color-coded by denomination, are sometimes referred to as "bigface" notes or "Monopoly money".

"Piastre" was the original French word for the U.S. dollar, used for example in the French text of the Louisiana Purchase. Calling the dollar a piastre is still common among the speakers of Cajun French and New England French. Modern French uses dollar for this unit of currency as well. The term is still used as slang for U.S. dollars in the French-speaking Caribbean islands, most notably Haiti.

Dollar sign[edit]

Main article: Dollar sign
Spanish silver real or peso of 1768

The symbol $, usually written before the numerical amount, is used for the U.S. dollar (as well as for many other currencies). The sign was the result of a late 18th-century evolution of the scribal abbreviation "ps" for the peso, the common name for the Spanish dollars that were in wide circulation in the New World from the 16th to the 19th centuries. These Spanish pesos or dollars were minted in Spanish America, namely in Mexico City; Potosí, Bolivia; and Lima, Peru. The p and the s eventually came to be written over each other giving rise to $.[33][34][35][36]

Another popular explanation is that it is derived from the Pillars of Hercules on the Spanish Coat of arms of the Spanish dollar. These Pillars of Hercules on the silver Spanish dollar coins take the form of two vertical bars (||) and a swinging cloth band in the shape of an "S".

Yet another explanation suggests that the dollar sign was formed from the capital letters U and S written or printed one on top of the other. This theory, popularized by novelist Ayn Rand in Atlas Shrugged,[37] does not consider the fact that the symbol was already in use before the formation of the United States.[38]

History[edit]

See also: History of the United States dollar
Obverse of a rare 1934 $500 Federal Reserve Note, featuring a portrait of President William McKinley
Reverse of a $500 Federal Reserve Note

The American dollar coin was initially based on the value and look of the Spanish dollar or piece of eight, used widely in Spanish America from the 16th to the 19th centuries. The first dollar coins issued by the United States Mint (founded 1792) were similar in size and composition to the Spanish dollar, minted in Mexico and Peru. The Spanish, U.S. silver dollars, and later, Mexican silver pesos circulated side by side in the United States, and the Spanish dollar and Mexican peso remained legal tender until the Coinage Act of 1857. The coinage of various English colonies also circulated. The lion dollar was popular in the Dutch New Netherland Colony (New York), but the lion dollar also circulated throughout the English colonies during the 17th century and early 18th century. Examples circulating in the colonies were usually worn so that the design was not fully distinguishable, thus they were sometimes referred to as "dog dollars".[39]

On the 6th of July 1785, the Continental Congress resolved that the money unit of the United States, the dollar, would contain 375.64 grains of fine silver; on the 8th of August 1786, the Continental Congress continued that definition and further resolved that the money of account, corresponding with the division of coins, would proceed in a decimal ratio, with the sub-units being mills at 0.001 of a dollar, cents at 0.010 of a dollar, and dimes at 0.100 of a dollar.[22]

After the adoption of the United States Constitution, the U.S. dollar was defined by the Coinage Act of 1792, which specified a "dollar" to be based in the Spanish milled dollar and of 371 grains and 4 sixteenths part of a grain of pure or 416 grains (27.0 g) of standard silver and an "eagle" to be 247 and 4 eighths of a grain or 270 grains (17 g) of gold (again depending on purity).[40] The choice of the value 371 grains arose from Alexander Hamilton's decision to base the new American unit on the average weight of a selection of worn Spanish dollars. Hamilton got the treasury to weigh a sample of Spanish dollars and the average weight came out to be 371 grains. A new Spanish dollar was usually about 377 grains in weight, and so the new U.S. dollar was at a slight discount in relation to the Spanish dollar.

The same coinage act also set the value of an eagle at 10 dollars, and the dollar at ​1⁄10 eagle. It called for 90% silver alloy coins in denominations of 1, ​1⁄2, ​1⁄4, ​1⁄10, and ​1⁄20 dollars; it called for 90% gold alloy coins in denominations of 1, ​1⁄2, ​1⁄4, and ​1⁄10 eagles. The value of gold or silver contained in the dollar was then converted into relative value in the economy for the buying and selling of goods. This allowed the value of things to remain fairly constant over time, except for the influx and outflux of gold and silver in the nation's economy.[41]

The early currency of the United States did not exhibit faces of presidents, as is the custom now;[42] although today, by law, only the portrait of a deceased individual may appear on United States currency.[43] In fact, the newly formed government was against having portraits of leaders on the currency, a practice compared to the policies of European monarchs.[44] The currency as we know it today did not get the faces they currently have until after the early 20th century; before that "heads" side of coinage used profile faces and striding, seated, and standing figures from Greek and Roman mythology and composite Native Americans. The last coins to be converted to profiles of historic Americans were the dime (1946) and the Dollar (1971).

For articles on the currencies of the colonies and states, see Connecticut pound, Delaware pound, Georgia pound, Maryland pound, Massachusetts pound, New Hampshire pound, New Jersey pound, New York pound, North Carolina pound, Pennsylvania pound, Rhode Island pound, South Carolina pound, and Virginia pound.

Continental currency[edit]

Continental one third dollar bill (obverse)
See also: Continental currency

During the American Revolution the thirteen colonies became independent states. Freed from British monetary regulations, they each issued £sd paper money to pay for military expenses. The Continental Congress also began issuing "Continental Currency" denominated in Spanish dollars. The dollar was valued relative to the states' currencies at the following rates:

Continental currency depreciated badly during the war, giving rise to the famous phrase "not worth a continental".[45] A primary problem was that monetary policy was not coordinated between Congress and the states, which continued to issue bills of credit. Additionally, neither Congress nor the governments of the several states had the will or the means to retire the bills from circulation through taxation or the sale of bonds.[46] The currency was ultimately replaced by the silver dollar at the rate of 1 silver dollar to 1000 continental dollars.

Silver and gold standards[edit]

From 1792, when the Mint Act was passed, the dollar was defined as 371.25 grains (24.056 g) of silver. The gold coins that were minted were not given any denomination and traded for a market value relative to the Congressional standard of the silver dollar. 1834 saw a shift in the gold standard to 23.2 grains (1.50 g), followed by a slight adjustment to 23.22 grains (1.505 g) in 1837 (16:1 ratio).[citation needed]

In 1862, paper money was issued without the backing of precious metals, due to the Civil War. Silver and gold coins continued to be issued and in 1878 the link between paper money and coins was reinstated. This disconnection from gold and silver backing also occurred during the War of 1812. The use of paper money not backed by precious metals had also occurred under the Articles of Confederation from 1777 to 1788. With no solid backing and being easily counterfeited, the continentals quickly lost their value, giving rise to the phrase "not worth a continental". This was a primary reason for the "No state shall... make any thing but gold and silver coin a tender in payment of debts" clause in article 1, section 10 of the United States Constitution.

In order to finance the War of 1812, Congress authorized the issuance of Treasury Notes, interest-bearing short-term debt that could be used to pay public dues. While they were intended to serve as debt, they did function "to a limited extent" as money. Treasury Notes were again printed to help resolve the reduction in public revenues resulting from the Panic of 1837 and the Panic of 1857, as well as to help finance the Mexican–American War and the Civil War.

In addition to Treasury Notes, in 1861, Congress authorized the Treasury to borrow $50 million in the form of Demand Notes, which did not bear interest but could be redeemed on demand for precious metals. However, by December 1861, the Union government's supply of specie was outstripped by demand for redemption and they were forced to suspend redemption temporarily. The following February, Congress passed the Legal Tender Act of 1862, issuing United States Notes, which were not redeemable on demand and bore no interest, but were legal tender, meaning that creditors had to accept them at face value for any payment except for public debts and import tariffs. However, silver and gold coins continued to be issued, resulting in the depreciation of the newly printed notes through Gresham's Law. In 1869, Supreme Court ruled in Hepburn v. Griswold that Congress could not require creditors to accept United States Notes, but overturned that ruling the next year in the Legal Tender Cases. In 1875, Congress passed the Specie Payment Resumption Act, requiring the Treasury to allow US Notes to be redeemed for gold after January 1, 1879. The Treasury ceased to issue United States Notes in 1971.

The Gold Standard Act of 1900 abandoned the bimetallic standard and defined the dollar as 23.22 grains (1.505 g) of gold, equivalent to setting the price of 1 troy ounce of gold at $20.67. Silver coins continued to be issued for circulation until 1964, when all silver was removed from dimes and quarters, and the half dollar was reduced to 40% silver. Silver half dollars were last issued for circulation in 1970. Gold coins were confiscated by Executive Order 6102 issued in 1933 by Franklin Roosevelt. The gold standard was changed to 13.71 grains (0.888 g), equivalent to setting the price of 1 troy ounce of gold at $35. This standard persisted until 1968.

Between 1968 and 1975, a variety of pegs to gold were put in place, eventually culminating in a sudden end, on August 15, 1971, to the convertibility of dollars to gold later dubbed the Nixon Shock. The last peg was $42.22 per ounce[citation needed] before the U.S. dollar was allowed to freely float on currency markets.

According to the Bureau of Engraving and Printing, the largest note it ever printed was the $100,000 Gold Certificate, Series 1934. These notes were printed from December 18, 1934, through January 9, 1935, and were issued by the Treasurer of the United States to Federal Reserve Banks only against an equal amount of gold bullion held by the Treasury. These notes were used for transactions between Federal Reserve Banks and were not circulated among the general public.

Coins[edit]

Main article: Coins of the United States dollar

Official United States coins have been produced every year from 1792 to the present.

Denomination Common name Front Reverse Portrait and design date Reverse motif and design date Weight Diameter Material Edge Circulation
Cent
1¢ 		penny US One Cent Obv.png US One Cent Rev.png Abraham Lincoln Union Shield 2.5 g
(0.088 oz) 		0.75 in
(19.05 mm) 		97.5% Zn covered by 2.5% Cu Plain Wide
Five-Cents
5¢ 		nickel US Nickel 2013 Obv.png US Nickel 2013 Rev.png Thomas Jefferson Monticello 5.0 g
(0.176 oz) 		0.835 in
(21.21 mm) 		75% Cu
25% Ni 		Plain Wide
Dime
10¢ 		dime Dime Obverse 13.png Dime Reverse 13.png Franklin D. Roosevelt olive branch, torch, oak branch 2.268 g
(0.08 oz) 		0.705 in
(17.91 mm) 		91.67% Cu
8.33% Ni 		118 reeds Wide
Quarter Dollar
25¢ 		quarter 2014 ATB Quarter Obv.png 2019-america-the-beautiful-quarters-coin-san-antonio-missions-texas-uncirculated-reverse.jpg George Washington Various; five designs per year 5.67 g
(0.2 oz) 		0.955 in
(24.26 mm) 		91.67% Cu
8.33% Ni 		119 reeds Wide
Half Dollar
50¢ 		half US Half Dollar Obverse 2015.png US 50 Cent Rev.png John F. Kennedy Presidential Seal 11.34 g
(0.4 oz) 		1.205 in
(30.61 mm) 		91.67% Cu
8.33% Ni 		150 reeds Limited
Dollar coin
$1 		dollar coin, golden dollar Sacagawea dollar obverse.png 2019 Native American Dollar Reverse.jpg Profile of Sacagawea with her child, Jean Baptiste Charbonneau Bald eagle in flight (2000–2008), Various; new design per year 8.10 g
(0.286 oz) 		1.043 in
(26.50 mm) 		88.5% Cu
6% Zn
3.5% Mn
2% Ni 		Lettered Limited

Discontinued and canceled coin denominations include:

Collector coins for which everyday transactions are non-existent.[47]

  • American Eagles originally were not available from the Mint for individuals but had to be purchased from authorized dealers. In 2006, the Mint began direct sales to individuals of uncirculated bullion coins with a special finish, and bearing a "W" mintmark.
  • United States commemorative coins—special issue coins

Technically, all these coins are still legal tender at face value, though some are far more valuable today for their numismatic value, and for gold and silver coins, their precious metal value. From 1965 to 1970 the Kennedy half dollar was the only circulating coin with any silver content, which was removed in 1971 and replaced with cupronickel. However, since 1992, the U.S. Mint has produced special Silver Proof Sets in addition to the regular yearly proof sets with silver dimes, quarters, and half dollars in place of the standard copper-nickel versions. In addition, an experimental $4.00 (Stella) coin was also minted in 1879, but never placed into circulation, and is properly considered to be a pattern rather than an actual coin denomination.

The $50 coin mentioned was only produced in 1915 for the Panama-Pacific International Exposition (1915) celebrating the opening of the Panama Canal. Only 1,128 were made, 645 of which were octagonal; this remains the only U.S. coin that was not round as well as the largest and heaviest U.S. coin ever produced.

A $100 gold coin was produced in High relief during 2015, although it was primarily produced for collectors, not for general circulation.[48]

From 1934 to present, the only denominations produced for circulation have been the familiar penny, nickel, dime, quarter, half dollar and dollar. The nickel is the only coin still in use today that is essentially unchanged (except in its design) from its original version. Every year since 1866, the nickel has been 75% copper and 25% nickel, except for 4 years during World War II when nickel was needed for the war.

Due to the penny's low value, some efforts have been made to eliminate the penny as circulating coinage.[49][50]

Collector coins[edit]

The United States Mint produces Proof Sets specifically for collectors and speculators. Silver Proofs tend to be the standard designs but with the dime, quarter, and half dollar containing 90% silver. Starting in 1983 and ending in 1997, the Mint also produced proof sets containing the year's commemorative coins alongside the regular coins. Another type of proof set is the Presidential Dollar Proof Set where the four special $1 coins are minted each year featuring a president. Because of budget constraints and increasing stockpiles of these relatively unpopular coins, the production of new Presidential dollar coins for circulation was suspended on December 13, 2011, by U.S. Treasury Secretary Timothy F. Geithner. Presidential dollars (along with all other dollar coin series) minted from 2012 onward were made solely for collectors.[51]

Dollar coins[edit]

Main article: Coins of the United States dollar

The first United States dollar was minted in 1794. Known as the Flowing Hair Dollar, it contained 416 grains of "standard silver" (89.25% silver and 10.75% copper), as specified by Section 13[52] of the Coinage Act of 1792. It was designated by Section 9 of that Act as having "the value of a Spanish milled dollar".

Dollar coins have not been very popular in the United States.[53] Silver dollars were minted intermittently from 1794 through 1935; a copper-nickel dollar of the same large size, featuring President Dwight D. Eisenhower, was minted from 1971 through 1978. Gold dollars were also minted in the 19th century. The Susan B. Anthony dollar coin was introduced in 1979; these proved to be unpopular because they were often mistaken for quarters, due to their nearly equal size, their milled edge, and their similar color. Minting of these dollars for circulation was suspended in 1980 (collectors' pieces were struck in 1981), but, as with all past U.S. coins, they remain legal tender. As the number of Anthony dollars held by the Federal Reserve and dispensed primarily to make change in postal and transit vending machines had been virtually exhausted, additional Anthony dollars were struck in 1999. In 2000, a new dollar coin featuring Sacagawea was introduced, which corrected some of the problems of the Anthony dollar by having a smooth edge and a gold color, without requiring changes to vending machines that accept the Anthony dollar. However, this new coin has failed to achieve the popularity of the still-existing dollar bill and is rarely used in daily transactions. The failure to simultaneously withdraw the dollar bill and weak publicity efforts have been cited by coin proponents as primary reasons for the failure of the dollar coin to gain popular support.[54]

In February 2007, the U.S. Mint, under the Presidential $1 Coin Act of 2005,[55] introduced a new $1 U.S. Presidential dollar coin. Based on the success of the "50 State Quarters" series, the new coin features a sequence of presidents in order of their inaugurations, starting with George Washington, on the obverse side. The reverse side features the Statue of Liberty. To allow for larger, more detailed portraits, the traditional inscriptions of "E Pluribus Unum", "In God We Trust", the year of minting or issuance, and the mint mark will be inscribed on the edge of the coin instead of the face. This feature, similar to the edge inscriptions seen on the British £1 coin, is not usually associated with U.S. coin designs. The inscription "Liberty" has been eliminated, with the Statue of Liberty serving as a sufficient replacement. In addition, due to the nature of U.S. coins, this will be the first time there will be circulating U.S. coins of different denominations with the same president featured on the obverse (heads) side (Lincoln/penny, Jefferson/nickel, Franklin D. Roosevelt/dime, Washington/quarter, Kennedy/half dollar, and Eisenhower/dollar). Another unusual fact about the new $1 coin is Grover Cleveland will have two coins with two different portraits issued due to the fact he was the only U.S. President to be elected to two non-consecutive terms.[56]

Early releases of the Washington coin included error coins shipped primarily from the Philadelphia mint to Florida and Tennessee banks. Highly sought after by collectors, and trading for as much as $850 each within a week of discovery, the error coins were identified by the absence of the edge impressions "E PLURIBUS UNUM IN GOD WE TRUST 2007 P". The mint of origin is generally accepted to be mostly Philadelphia, although identifying the source mint is impossible without opening a mint pack also containing marked units. Edge lettering is minted in both orientations with respect to "heads", some amateur collectors were initially duped into buying "upside down lettering error" coins.[57] Some cynics also erroneously point out that the Federal Reserve makes more profit from dollar bills than dollar coins because they wear out in a few years, whereas coins are more permanent. The fallacy of this argument arises because new notes printed to replace worn out notes, which have been withdrawn from circulation, bring in no net revenue to the government to offset the costs of printing new notes and destroying the old ones. As most vending machines are incapable of making change in banknotes, they commonly accept only $1 bills, though a few will give change in dollar coins.[citation needed]

Mint marks[edit]

Mint Mint mark Metal minted Year established Current status
Denver D All metals 1906 Facility open
Philadelphia P or none[d] All metals 1792 Facility open
San Francisco S All metals 1854 Facility open (mainly produces proof)
West Point W or none[e] Gold, Silver, Platinum and Palladium 1973 Facility open (mainly produces bullion)
Carson City CC Gold and Silver 1870 Facility closed, 1893[f]
Charlotte C Gold only 1838 Facility closed, 1861
Dahlonega D[g] Gold only 1838 Facility closed, 1861
Manila[h] M or none[i] All metals 1920 Facility closed, 1922; re-opened 1925–1941
New Orleans O Gold and Silver 1838 Facility closed, 1861; re-opened 1879–1909[j]

Banknotes[edit]

Main article: Federal Reserve Note
Denomination Front Reverse Portrait Reverse motif First series Latest series Circulation
One Dollar US one dollar bill, obverse, series 2009.jpg US one dollar bill, reverse, series 2009.jpg George Washington Great Seal of the United States Series 1963[k]
Series 1935[l] 		Series 2017A[58] Wide
Two Dollars US $2 obverse.jpg US $2 reverse.jpg Thomas Jefferson Declaration of Independence by John Trumbull Series 1976 Series 2017A Limited
Five Dollars US $5 Series 2006 obverse.jpg US $5 Series 2006 reverse.jpg Abraham Lincoln Lincoln Memorial Series 2006 Series 2017A Wide
Ten Dollars US10dollarbill-Series 2004A.jpg US $10 Series 2004 reverse.jpg Alexander Hamilton U.S. Treasury Series 2004A Series 2017A Wide
Twenty Dollars US20-front.jpg US20-back.jpg Andrew Jackson White House Series 2004 Series 2017A Wide
Fifty Dollars 50 USD Series 2004 Note Front.jpg 50 USD Series 2004 Note Back.jpg Ulysses S. Grant United States Capitol Series 2004 Series 2013 Wide
One Hundred Dollars Obverse of the series 2009 $100 Federal Reserve Note.jpg New100back.jpg Benjamin Franklin Independence Hall Series 2009 Series 2017A Wide

The U.S. Constitution provides that Congress shall have the power to "borrow money on the credit of the United States".[59] Congress has exercised that power by authorizing Federal Reserve Banks to issue Federal Reserve Notes. Those notes are "obligations of the United States" and "shall be redeemed in lawful money on demand at the Treasury Department of the United States, in the city of Washington, District of Columbia, or at any Federal Reserve bank".[60] Federal Reserve Notes are designated by law as "legal tender" for the payment of debts.[61] Congress has also authorized the issuance of more than 10 other types of banknotes, including the United States Note[62] and the Federal Reserve Bank Note. The Federal Reserve Note is the only type that remains in circulation since the 1970s.

Currently printed denominations are $1, $2, $5, $10, $20, $50, and $100. Notes above the $100 denomination stopped being printed in 1946 and were officially withdrawn from circulation in 1969. These notes were used primarily in inter-bank transactions or by organized crime; it was the latter usage that prompted President Richard Nixon to issue an executive order in 1969 halting their use. With the advent of electronic banking, they became less necessary. Notes in denominations of $500, $1,000, $5,000, $10,000, and $100,000 were all produced at one time; see large denomination bills in U.S. currency for details. With the exception of the $100,000 bill (which was only issued as a Series 1934 Gold Certificate and was never publicly circulated; thus it is illegal to own), these notes are now collectors' items and are worth more than their face value to collectors.

Though still predominantly green, post-2004 series incorporate other colors to better distinguish different denominations. As a result of a 2008 decision in an accessibility lawsuit filed by the American Council of the Blind, the Bureau of Engraving and Printing is planning to implement a raised tactile feature in the next redesign of each note, except the $1 and the current version of the $100 bill. It also plans larger, higher-contrast numerals, more color differences, and distribution of currency readers to assist the visually impaired during the transition period.[63]

Means of issue[edit]

The monetary base consists of coins and Federal Reserve Notes in circulation outside the Federal Reserve Banks and the U.S. Treasury, plus deposits held by depository institutions at Federal Reserve Banks. The adjusted monetary base has increased from approximately 400 billion dollars in 1994, to 800 billion in 2005, over 3000 billion in 2013.[64] The amount of cash in circulation is increased (or decreased) by the actions of the Federal Reserve System. Eight times a year, the 12-person Federal Open Market Committee meets to determine U.S. monetary policy.[65] Every business day, the Federal Reserve System engages in Open market operations to carry out that monetary policy.[66] If the Federal Reserve desires to increase the money supply, it will buy securities (such as U.S. Treasury Bonds) anonymously from banks in exchange for dollars. Conversely, it will sell securities to the banks in exchange for dollars, to take dollars out of circulation.[67]

When the Federal Reserve makes a purchase, it credits the seller's reserve account (with the Federal Reserve). This money is not transferred from any existing funds—it is at this point that the Federal Reserve has created new high-powered money. Commercial banks can freely withdraw in cash any excess reserves from their reserve account at the Federal Reserve. To fulfill those requests, the Federal Reserve places an order for printed money from the U.S. Treasury Department.[68] The Treasury Department in turn sends these requests to the Bureau of Engraving and Printing (to print new dollar bills) and the Bureau of the Mint (to stamp the coins).

Usually, the short-term goal of open market operations is to achieve a specific short-term interest rate target. In other instances, monetary policy might instead entail the targeting of a specific exchange rate relative to some foreign currency or else relative to gold. For example, in the case of the United States the Federal Reserve targets the federal funds rate, the rate at which member banks lend to one another overnight. The other primary means of conducting monetary policy include: (i) Discount window lending (as lender of last resort); (ii) Fractional deposit lending (changes in the reserve requirement); (iii) Moral suasion (cajoling certain market players to achieve specified outcomes); (iv) "Open mouth operations" (talking monetary policy with the market).

Value[edit]

Buying power of one U.S. dollar compared to 1775 Continental currency
 Year   Equivalent  buying power
1775  $1.00
1780  $0.59
1790  $0.89
1800  $0.64
1810  $0.66
1820  $0.69
1830  $0.88
1840  $0.94
1850  $1.03
1860  $0.97
 Year   Equivalent  buying power
1870  $0.62
1880  $0.79
1890  $0.89
1900  $0.96
1910  $0.85
1920  $0.39
1930  $0.47
1940  $0.56
1950  $0.33
1960  $0.26
 Year   Equivalent  buying power
1970  $0.20
1980  $0.10
1990  $0.06
2000  $0.05
2007  $0.04
2008  $0.04
2009  $0.04
2010  $0.035
2011  $0.034
2012  $0.03
U.S. Consumer Price Index, starting from 1913

The 6th paragraph of Section 8 of Article 1 of the U.S. Constitution provides that the U.S. Congress shall have the power to "coin money" and to "regulate the value" of domestic and foreign coins. Congress exercised those powers when it enacted the Coinage Act of 1792. That Act provided for the minting of the first U.S. dollar and it declared that the U.S. dollar shall have "the value of a Spanish milled dollar as the same is now current".[69]

The table to the right shows the equivalent amount of goods that, in a particular year, could be purchased with $1. The table shows that from 1774 through 2012 the U.S. dollar has lost about 97.0% of its buying power.[70]

The decline in the value of the U.S. dollar corresponds to price inflation, which is a rise in the general level of prices of goods and services in an economy over a period of time.[71] A consumer price index (CPI) is a measure estimating the average price of consumer goods and services purchased by households. The United States Consumer Price Index, published by the Bureau of Labor Statistics, is a measure estimating the average price of consumer goods and services in the United States.[72] It reflects inflation as experienced by consumers in their day-to-day living expenses.[73] A graph showing the U.S. CPI relative to 1982–1984 and the annual year-over-year change in CPI is shown at right.

The value of the U.S. dollar declined significantly during wartime, especially during the American Civil War, World War I, and World War II.[74] The Federal Reserve, which was established in 1913, was designed to furnish an "elastic" currency subject to "substantial changes of quantity over short periods", which differed significantly from previous forms of high-powered money such as gold, national bank notes, and silver coins.[75] Over the very long run, the prior gold standard kept prices stable—for instance, the price level and the value of the U.S. dollar in 1914 was not very different from the price level in the 1880s. The Federal Reserve initially succeeded in maintaining the value of the U.S. dollar and price stability, reversing the inflation caused by the First World War and stabilizing the value of the dollar during the 1920s, before presiding over a 30% deflation in U.S. prices in the 1930s.[76]

Under the Bretton Woods system established after World War II, the value of gold was fixed to $35 per ounce, and the value of the U.S. dollar was thus anchored to the value of gold. Rising government spending in the 1960s, however, led to doubts about the ability of the United States to maintain this convertibility, gold stocks dwindled as banks and international investors began to convert dollars to gold, and as a result the value of the dollar began to decline. Facing an emerging currency crisis and the imminent danger that the United States would no longer be able to redeem dollars for gold, gold convertibility was finally terminated in 1971 by President Nixon, resulting in the "Nixon shock".[77]

The value of the U.S. dollar was therefore no longer anchored to gold, and it fell upon the Federal Reserve to maintain the value of the U.S. currency. The Federal Reserve, however, continued to increase the money supply, resulting in stagflation and a rapidly declining value of the U.S. dollar in the 1970s. This was largely due to the prevailing economic view at the time that inflation and real economic growth were linked (the Phillips curve), and so inflation was regarded as relatively benign.[77] Between 1965 and 1981, the U.S. dollar lost two thirds of its value.[70]

In 1979, President Carter appointed Paul Volcker Chairman of the Federal Reserve. The Federal Reserve tightened the money supply and inflation was substantially lower in the 1980s, and hence the value of the U.S. dollar stabilized.[77]

Over the thirty-year period from 1981 to 2009, the U.S. dollar lost over half its value.[70] This is because the Federal Reserve has targeted not zero inflation, but a low, stable rate of inflation—between 1987 and 1997, the rate of inflation was approximately 3.5%, and between 1997 and 2007 it was approximately 2%. The so-called "Great Moderation" of economic conditions since the 1970s is credited to monetary policy targeting price stability.[78]

There is ongoing debate about whether central banks should target zero inflation (which would mean a constant value for the U.S. dollar over time) or low, stable inflation (which would mean a continuously but slowly declining value of the dollar over time, as is the case now). Although some economists are in favor of a zero inflation policy and therefore a constant value for the U.S. dollar,[76] others contend that such a policy limits the ability of the central bank to control interest rates and stimulate the economy when needed.[79]

Exchange rates[edit]

Historical exchange rates[edit]

Currency units per U.S. dollar, averaged over the year
19702 19802 19852 19902 1993 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2018[80]
Euro  —  —  —  —  — 0.9387 1.0832 1.1171 1.0578 0.8833 0.8040 0.8033 0.7960 0.7293 0.6791 0.7176 0.6739 0.7178 0.7777 0.7530 0.7520 0.9015 0.8504
Japanese yen 357.6 240.45 250.35 146.25 111.08 113.73 107.80 121.57 125.22 115.94 108.15 110.11 116.31 117.76 103.39 93.68 87.78 79.70 79.82 97.60 105.74 121.05 111.130
Pound sterling 8s 4d
=0.4167		 0.4484[81] 0.8613[81] 0.6207 0.6660 0.6184 0.6598 0.6946 0.6656 0.6117 0.5456 0.5493 0.5425 0.4995 0.5392 0.6385 0.4548 0.6233 0.6308 0.6393 0.6066 0.6544 0.7454
Swiss franc 4.12 1.68 2.46[82] 1.39 1.48 1.50 1.69 1.69 1.62 1.40 1.24 1.15 1.29 1.23 1.12 1.08 1.03 0.93 0.93 0.90 0.92 1.00 0.98
Canadian dollar 1.081 1.168 1.321 1.1605 1.2902 1.4858 1.4855 1.5487 1.5704 1.4008 1.3017 1.2115 1.1340 1.0734 1.0660 1.1412 1.0298 0.9887 0.9995 1.0300 1.1043 1.2789 1.2842
Mexican peso 0.01250–0.026501 2.801 2.671 2.501 3.1237 9.553 9.459 9.337 9.663 10.793 11.290 10.894 10.906 10.928 11.143 13.498 12.623 12.427 13.154 12.758 13.302 15.837 19.911
Renminbi yuan 2.46 1.7050 2.9366 4.7832 5.7620 8.2783 8.2784 8.2770 8.2771 8.2772 8.2768 8.1936 7.9723 7.6058 6.9477 6.8307 6.7696 6.4630 6.3093 6.1478 6.1620 6.2840 6.383
Pakistani rupee 4.761 9.9 15.9284 21.707 28.107 51.9 51.9 63.5 60.5 57.75 57.8 59.7 60.4 60.83 67 80.45 85.75 88.6 90.7 105.477 100.661 104.763 139.850
Indian rupee 7.56 8.000 12.38 16.96 31.291 43.13 45.00 47.22 48.63 46.59 45.26 44.00 45.19 41.18 43.39 48.33 45.65 46.58 53.37 58.51 62.00 64.1332 68.11
Singapore dollar  —  — 2.179 1.903 1.6158 1.6951 1.7361 1.7930 1.7908 1.7429 1.6902 1.6639 1.5882 1.5065 1.4140 1.4543 1.24586 1.2565 1.2492 1.2511 1.2665 1.3748 1.343

Notes:
1. Mexican peso values prior to 1993 revaluation
2. Value at the start of the year

Sources:

Current exchange rates[edit]

Current USD exchange rates
From Google Finance: AUD CAD CHF EUR GBP HKD JPY RUB INR CNY
From Yahoo! Finance: AUD CAD CHF EUR GBP HKD JPY RUB INR CNY
From XE: AUD CAD CHF EUR GBP HKD JPY RUB INR CNY
From OANDA: AUD CAD CHF EUR GBP HKD JPY RUB INR CNY
From fxtop.com: AUD CAD CHF EUR GBP HKD JPY RUB INR CNY

See also[edit]

Other main currencies

Notes[edit]

  1. ^ Alongside East Timor centavo coins
  2. ^ Alongside Ecuadorian centavo coins
  3. ^ Alongside Panamanian balboa coins
  4. ^ The letter "P" is used for the Philadelphia mint mark on all coins (except cents) released from 1980 onward. Before this it had only been used on silver Jefferson nickels from 1942 to 1945.
  5. ^ Between 1973 and 1986 there was no mint mark (these coins are indistinguishable from coins produced at the Philadelphia Mint from 1973 to 1980); after 1988 the letter "W" was used for coinage, except for the 2009 Ultra High Relief Double Eagle.
  6. ^ It is now the home of the Nevada State Museum, which still strikes commemorative medallions with the "CC" mint mark (most recently in 2014 commemorating the Nevada Sesquicentennial), using the former mint's original coin press.
  7. ^ Although the mint mark "D" has been used by two separate mints, it is easy to distinguish between the two, as any 19th‑century coinage is Dahlonega, and any 20th- or 21st‑century coins are Denver.
  8. ^ During the period in which this mint branch was operational, The Philippines was an insular territory and then commonwealth of the U.S.; it was the first (and to date only) U.S. branch mint located outside the Continental United States.
  9. ^ The letter "M" was used for the Manila mint mark on all coins released from 1925 onward; before this it had produced its coins with no mintmark.
  10. ^ During the Civil War, this mint operated under the control of the State of Louisiana (February 1861) and the Confederate States of America (March 1861) until it ran out of bullion later in that year; some Half Dollars have been identified as being the issue of the State of Louisiana and the Confederacy.
  11. ^ Obverse
  12. ^ Reverse

References[edit]

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  3. ^ "Ecuador". CIA World Factbook. October 18, 2010. Retrieved October 17, 2018. The dollar is legal tender
  4. ^ "El Salvador". CIA World Factbook. October 21, 2010. Retrieved October 17, 2018. The US dollar became El Salvador's currency in 2001
  5. ^ "FAQs". BOARD OF GOVERNORS of the FEDERAL RESERVE SYSTEM. October 8, 2013. Retrieved January 3, 2020. All U.S. currency remains legal tender, regardless of when it was issued.
  6. ^ "Legal Tender Status". U.S. DEPARTMENT OF THE TREASURY. January 4, 2011. Retrieved January 3, 2020. United States notes serve no function that is not already adequately served by Federal Reserve notes. As a result, the Treasury Department stopped issuing United States notes, and none have been placed into circulation since January 21, 1971.
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  75. ^ Friedman 189–190
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  77. ^ a b c "Controlling Inflation: A Historical Perspective" (PDF). Archived from the original (PDF) on December 7, 2010. Retrieved July 17, 2010.
  78. ^ "Monetary Credibility, Inflation, and Economic Growth". Retrieved July 17, 2010.
  79. ^ "U.S. Monetary Policy: The Fed's Goals". Retrieved October 17, 2018.
  80. ^ "Historical Exchange Rates Currency Converter - TransferMate". www.transfermate.com.
  81. ^ a b 1970–1992. 1980 derived from AUD–USD=1.1055 and AUD–GBP=0.4957 at end of Dec 1979: 0.4957/1.1055=0.448394392; 1985 derived from AUD–USD=0.8278 and AUD–GBP=0.7130 at end of Dec 1984: 0.7130/0.8278=0.861319159
  82. ^ title=Exchange Rates Between the United States Dollar and the Swiss Franc | publisher=Measuring Worth | accessdate=October 17, 2018
  83. ^ "FRB: Foreign Exchange Rates – G.5A; Release Dates". Board of Governors of the Federal Reserve System. Retrieved July 23, 2014.

Further reading[edit]

External links[edit]

Images of U.S. currency and coins[edit]

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