Riau, though part of Dutch and Indonesian territory, was economically under the influence of neighbouring Malaya.
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The Riau rupiah was much shorter lived than the West Irian rupiah (which circulated from May 1963 until 1971), and, by Presidential decree effective from 1 July 1964, the Riau rupiah was no longer a valid currency, being replaced by the Indonesian rupiah at a rate of 1 Riau rupiah = 14.7 Indonesian rupiah.
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It replaced the Malaya and British Borneo dollar at par and was replaced by the Indonesian rupiah at the rate of 1 Riau rupiah = 14.7 Indonesian rupiah.