Indonesian Rupiah (IDR)

The official currency of the sovereign Republic of Indonesia

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What is the Indonesian Rupiah (IDR)?

The Indonesian rupiah – denoted with the symbol Rp – is the official currency of the sovereign Republic of Indonesia. Indonesia’s currency is authorized and issued by the Republic’s central bank, Bank Indonesia. In some instances, Indonesians will casually refer to the rupiah as “peak,” which translates as “silver.” The term, “rupiah,” came from the Sanskrit word, “rupyaka,” which also translates as “silver.”

Indonesian Rupiah - Image of IDR bank notes

In the foreign exchange trading market (forex), the rupiah is designated as IDR. It means that the exchange rate between the United States and Indonesia – for example – would be expressed as USD/IDR. The current USD/IDR exchange rate, as of late 2020, is 14,167.80 or approximately Rp14,167 = 1 USD.


  • The rupiah is the official currency of the sovereign Republic of Indonesia; it is represented by the symbol Rp and designated as IDR in the forex market.
  • The rupiah’s suffered a number of issues and setbacks, largely due to inflation and plummeting exchange rates in response to financial crises.
  • Indonesian rupiah banknote denominations run as high as Rp100,000; a commemorative Rp75,000 note issued in 2020 was met with very high consumer demand.

The History of Indonesia’s Currency

In the colonial period, Indonesia used the Netherlands Indies gulden as its currency. Japanese invaders in 1942 printed a variation of the gulden. Indonesia introduced the first version of the rupiah in October 1946; however, it circulated along with a variety of other currencies from 1946 to 1950.

The Japanese adaptation of the gulden stood as the most prevalent currency, along with the Netherland’s gulden and Indonesia’s brand-new rupiah. The situation ended when the Dutch recognized Indonesia as an independent country in 1950. Indonesia’s federal government introduced currency reform immediately, declaring in 1951 that the rupiah would be the national currency.

Issues with Exchange Rates and Inflation

Throughout its entire existence, the rupiah’s been troubled by high rates of inflation. In 1965, the inflation rate skyrocketed to 635%. Political changes in 1966 led to the introduction of a stabilization program that changed the country’s economic policies, creating opportunities for debt relief, requiring more stringent bank reserves, and removing restrictions on imports.

In order to combat the skyrocketing inflation, Indonesia’s government introduced a variety of measures, including attempting to control foreign exchange (the rate was usually very unfavorable to the rupiah).

The central bank put major controls on foreign exchange rates in an effort to develop the reserves the Indonesian government desperately needed. It negatively impacted the operations of a number of Indonesian businesses that were unable to obtain an adequate supply of necessary imported materials.

The economic changes included introducing a “new” rupiah, which was implemented at an exchange rate of 1 new rupiah = 1,000 old rupiahs.

The central bank tried pegging the rupiah to the US dollar using a “managed float,” pegging to a basket of currencies. Despite the government’s intervention, the rupiah continued to suffer devaluations up through the 1990s.

The Asian Financial Crisis

The 1997 Asian Financial Crisis impacted Indonesia and the rupiah as it did nearly all countries and their currencies in the region. It happened despite the fact that Indonesia was more well-prepared to weather the storm than some other countries, after significantly improving its foreign reserves position.

Ultimately, with substantial assistance from the International Monetary Fund (IMF), Indonesia was able to more or less stabilize the rupiah. After hitting a low of Rp16,800 = 1 USD, the rupiah recovered to a level near Rp10,000 = 1vUSD. Still, the Indonesian rupiah remains viewed as an extremely risky currency to hold, and as noted above, the current exchange rate with the US dollar is a bit above 14,000 rupiahs.

Indonesian Rupiah Coins and Banknotes

Currently, there are two series of coins circulating in Indonesia: the old series, produced between 1991 and 2010, and a newly minted series issued in 2016. Rupiah coins are minted of bronze, nickel, or aluminum, and come in five denominations: 50, 100, 200, 500, and 1000 rupiah. The new series of coins features national heroes.

Indonesian rupiah banknotes in circulation are a combination of several issues occurring between 2000 and 2020, and come in eight denominations: Rp1,000, Rp2,000, Rp5,000, Rp10,000, Rp20,000, Rp50,000, Rp75,000 (a commemorative note), and Rp100,000.

Banknotes printed before the turn of the millennium are no longer legal tender in the country, primarily because they are sorely lacking in security features, and to a lesser extent because they are associated with the Suharto regime.

In August 2020, Indonesia introduced an Rp75,000 commemorative banknote to celebrate the country’s 75th anniversary of independence. Despite producing a massive print run of 75 million of the commemorative notes, the extremely high demand for them led Bank Indonesia to eventually implement purchase limits.

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