The Caliphate’s currency is based on the gold and silver standards where the coins and notes in circulation are 100% backed by gold and silver. Islam did not leave any question unanswered, especially questions concerning the complexities of economic life. The Shari’ah has therefore defined the Islamic currency as gold dinars and silver dirhams along with their corresponding weights in gold or silver. The Shari’ah rules related to money such as zakat, blood money (diyah) and hoarding all specify values in gold and silver.
Unlike the paper standard operating in the world today, the Bait ul-Mal (State Treasury) is not allowed to print any money unless it has the corresponding amounts of gold and silver in its reserves. This means the persistent inflation found in the world today would not exist in the Caliphate as the currency always keeps its value.
To illustrate this point when the UK operated the gold standard in the 19th and early 20th century its price level in 1914 was the same as in 1816. However, after abolishing the gold standard and operating a purely paper currency, the UK faced persistent inflation with a yearly increase in the price level. Over a fifty year period from 1948 to 1998 the price level was 19 times higher in 1998 than in 1948.
Nowadays, it’s impractical to actually use gold and silver coins for transactions as happened historically, so paper banknotes and copper, nickel and zinc coins would be used for day to day purchases. However, these paper notes and metal coins must be 100% redeemable at any time in to their corresponding amounts of gold and silver, with a small administrative charge to cover the minting process.
The Caliphate operates a bi-metallic standard with gold and silver currency circulating within the economy at the same time. This means the Caliphate is in fact operating two separate currencies.
At the time of the Messenger ﷺ and the Khulufa’a Rashideen (Rightly guided Caliph’s) the Muslims traded with gold and silver by weight. They did not mint a distinct currency for the state and instead used gold and silver in many forms. They used Byzantine Dinars and Persian Dirhams as well as gold dust, ingots and jewellery. The traders would weigh the gold and silver, and value it accordingly. This continued until the time of Caliph Abdul-Malik ibn Marwan in 77AH, when he began minting Islamic dinars and dirhams in their Shari’ah weights of gold and silver.
When the future Caliphate is established it will take some time before the old currency notes and coins in circulation e.g. Pakistani PKR’s or Indonesian IDR’s, can be completely abolished and replaced with minted dinars and dirhams. This is not a problem as long as the Caliphate from day one makes the PKR or IDR 100% backed by gold or silver.
A simplified example of how this would work is as follows. The Caliphate calculates the total value of its gold and silver reserves and then fixes their value to the total amount of PKR’s or IDR’s in circulation as best it can. Depending on its reserves it may decide to link the existing currency in circulation to silver and then issue a separate currency for gold or vice-versa.
The current market rate for silver is $18.12. A silver dirham is 2.975g in weight. An Islamic dirham is therefore worth approx. $1.90, PKR 132.57 or IDR 17,511.70.
The current market rate for gold is $934.00. A gold dinar is 4.25g in weight. An Islamic dinar is therefore worth approx. $140.02, PKR 9,762.19 or IDR 1,289,493.11.
Therefore silver is a better choice for small to medium transactions whereas gold is more suited for medium to high transactions, especially in the short term before the Caliphate mints a new currency that formally replaces PKR’s or IDR’s in circulation.
Since Allah سبحانه وتعالى has blessed the Muslim Ummah with an abundance of wealth and natural resources increasing the gold and silver reserves of the state is not a problem. The Caliphate will immediately price all sales of oil, gas and other resources in gold and silver and therefore break the link between these resources and the dollar. The international money markets would be forced to deal in gold dinars and silver dirhams since the west’s addiction to oil will continue for many years to come. Interestingly at the time of writing the oil price is $144.18 and a gold dinar is worth $140.02. A barrel of oil therefore equals roughly 1 dinar.
As regards the practicalities of minting notes and coins, what monetary units should be produced and designs etc., these are all styles and up to the Caliph to adopt as he deems best for the economy.
The gold dinar (4.25g) is the monetary unit of the Islamic State’s gold currency. The dinar can be sub-divided in to 1000 fulus. Historically fils (p. fulus) was the name given to copper coins. Today the name fils will mean gold coins that are divisions of a dinar.
The silver dinar (2.975.g) is the monetary unit of the Islamic State’s silver currency. The dirham was historically divided into 100 piastres in the Ottoman State. Piastres are therefore silver coins that are divisions of a dirham.
The following tables show examples of how gold dinars and silver dirhams can be minted by the Caliphate for use in everyday transactions. It also shows the current levels of the Zakat Nisab (limit over which zakat must be paid). The fils and piastre are small enough for purchasing everyday items such as bread and milk. The table uses four currencies for illustrative purposes: US dollars, UK Pounds, Pakistan Rupees (PKR) and Indonesian Rupiah (IDR).
A visual representation of the Caliphate’s gold dinars is available here.
1ounce gold = $934.00
1g gold = $32.95
Source: NY Gold Market. http://www.kitco.com/ 4th July 2008
Please note gold prices change on a daily basis.
A visual representation of the Caliphate’s silver dirhams is available here.
1oz silver = $18.12
1g silver = $0.64
Source: NY Silver Market. http://www.kitco.com/ 4th July 2008
Please note silver prices change on a daily basis.
 Abdul-Qadeem Zalloom, ‘Funds in the Caliphate State,’ translation of Al-Amwal fi Dowlat Al-Caliphate, Al-Caliphate Publications, 1988, p. 169
 Begg, Fischer, Dornbusch, ‘Economics,’ 8th Edition, Mcgraw Hill, 2005, p. 591
 Robert Twigger, ‘Inflation: the Value of the Pound 1750-1998,’ ECONOMIC POLICY AND STATISTICS SECTION, House of Commons Library,’ 1999
 NY Silver Market. http://www.kitco.com/ 4th July 2008
 NY Gold Market. http://www.kitco.com/ 4th July 2008