|Freq. used||100 baisa, , 1, 5, 10, 20, 50 rials|
|Rarely used||200 baisa|
|Coins||5, 10, baisa|
|Central Bank of Oman|
|Source||The World Factbook, 2011 est.|
|Pegged with||US dollar (USD)|
1 USD = 0.384497 OMR
From 1973 to 1986, the rial was pegged to the U.S. dollar at 1 Omani rial = US$2.895. The rate was changed in 1986 to 1 Omani rial = US$2.6008, which translates to approximately US$1 = 0.384497 rial. The Central Bank of Oman buys U.S. dollars at 0.384 Omani rial, and sell U.S. dollars at 0.385 Omani rial. It is the third-highest-valued currency unit after the Kuwaiti dinar and the Bahraini dinar.
Until 1940, the Indian rupee and the Maria Theresa thaler (known locally as the rial) were the main currencies circulating in Muscat and Oman, as the state was then known, with Indian rupees circulating on the coast and thaler in the interior. Maria Theresa thaler were valued at 230 paisa, with 64 paisa = 1 rupee.
In 1940, coins were introduced for use in Dhofar, followed, in 1946, by coins for use in Oman. Both coinages were denominated in baisa (equivalent to the paisa), with 200 baisa = 1 rial. The Indian rupee and, from 1959, the Gulf rupee continued to circulate. On 6 June 1966, India devalued the Gulf rupee against the Indian rupee. Following the devaluation, several of the states still using the Gulf rupee adopted their own currencies. Oman continued to use the Gulf rupee until 1970, with the government backing the currency at its old peg to the pound, when it adopted the rial Saidi.
In 1970, the rial Saidi (named after the House of Al Said, not to be confused with Saudi riyal) was introduced as the currency of Oman to replace the Gulf rupee. It was equal to the British pound sterling and 1 rial Saidi = 21 Gulf rupees. The rial Saidi was subdivided into 1000 baisa. The Omani rial replaced the rial Saidi at par in 1973. At that time, the currency became pegged to the US dollar at 1 Omani rial = US$2.895, instead of the pound sterling, a rate that would continue until 1986, when it was devalued by about 9% to 1 Omani rial = US$2.6008. The currency name was altered due to the regime change in 1970 and the subsequent change of the country's name. Since 1975, new coins have been issued with the country's name given as Oman.
In the 1890s, coins for and anna ( and 1 paisa) were minted specifically for use in Muscat and Oman.
In 1940, coins were issued for use in Dhofar in denominations of 10, 20 and 50 baisa. rial coins were added in 1948, followed by 3 baisa in 1959. In 1946, 2, 5 and 20 baisa coins were introduced for use in Oman. These were followed, between 1959 and 1960, by 3 baisa, and 1 rial coins.
In 1970, a coinage for all of Muscat and Oman was introduced. Denominations were 2, 5, 10, 25, 50 and 100 baisa. In 1975, new coins were issued with the country's name given as Oman. and rial coins were introduced in 1980.
Coins currently circulating are 5, 10, 25, 50 and 100 baisa, rial and rial.
|Omani Qaboos coins|
|5 baisa||19 mm||2.65 g||Copper-clad steel||Smooth||Qaboos bin Sa'id, Sultan of Oman||Year of minting||1999|
|10 baisa||22.5 mm||4.1 g||Copper-clad steel||Smooth||Qaboos bin Sa'id, Sultan of Oman||Year of minting||1999|
|25 baisa||22.5 mm||2.63 g||Nickel-plated steel||Reeded||Qaboos bin Sa'id, Sultan of Oman||Year of minting||1999|
|50 baisa||24 mm||5.57 g||Nickel-plated steel||Reeded||Qaboos bin Sa'id, Sultan of Oman||Year of minting||1999|
|100 baisa||21.5 mm||4.20 g||Copper-nickel||Reeded||Sultanate of Oman||Year of minting||1984|
|1/4 riyal||26 mm||6.5 g||Aluminium bronze||Lettered||Sultanate of Oman||Year of minting||1979|
|1/2 riyal||30 mm||10 g||Aluminium bronze||Reeded||Sultanate of Oman||Year of minting||1979|
On 7 May 1970, the Sultanate of Muscat and Oman issued banknotes in denominations of 100 baisa, , , 1, 5 and 10 rial saidi. These were followed by notes for 100 baisa, , , 1, 5 and 10 Omani rials issued by the Oman Currency Board on 18 November 1972.
From 1977, the Central Bank of Oman has issued notes, with 20 and 50 rial notes introduced that, followed by 200 baisa notes in 1985. A new series of notes was issued in 1995, and the 5-rial notes and higher were updated in 2000 with foil strips:
|100 baisa||Green||Sultan Qaboos bin Said al Said, irrigation canal||Verreaux eagle, white oryx|
|200 baisa||Blue||Sultan Qaboos bin Said Al Said, Salalah airport||Marine Science & Fisheries Center, Port Qaboos, Muttrah|
| rial||Brownish-purple||Sultan Qaboos bin Said Al Said, Bahla fortress||Al-Hazim fort, Nakhal Fort|
|1 rial||Purple||Sultan Qaboos bin Said Al Said, Sultan Qaboos Sports Complex||Omani Khanjar (dagger), silver bracelets and ornaments, dhows|
|5 rials||Red||Sultan Qaboos bin Said Al Said, Sultan Qaboos University||Nizwa|
|10 rials||Brown||Sultan Qaboos bin Said Al Said, Al-Nadha tower||Muttrah Fort|
|20 rials||Blue||Sultan Qaboos bin Said Al Said, Sultan Qaboos Grand Mosque (Muscat)||Royal Opera House Muscat|
|50 rials||Pink & violet||Sultan Qaboos bin Said Al Said, Ministry of Finance and Economy Building (Muscat)||Cabinet building and Ministry of Finance and Industry building (Muscat)|
In 2005, a red 1 rial note commemorating the "35th National Day" was issued.
In 2010, new 5, 10, 20 and 50-rial notes were issued on the occasion of the 40th National Day. The 20-rial note is blue instead of green while the other notes are the same colour as previously.
In 2015, a purple 1 rial note commemorating the "45th National Day" was issued.
As of 2017, notes in circulation are the 2010 series for higher denominations, the 2015 1-rial note, and the 1995 series of 100 baisa and rial. The 200-baisa note is still in circulation but not commonly seen, and older notes of 1-rial and above are still accepted though not found in circulation.