50 Tomans / 500 000 Rials

The 500,000 Rial denomination — revalued and marketed domestically as 50 Tomans — emerged from a prolonged currency crisis in which the rial had shed so much purchasing power that ordinary transactions required notes counted in the hundreds of thousands. Iran's parliament formally approved the toman as the official unit of account in 2020, with one toman equaling ten rials, a redenomination that effectively acknowledged the gap between the currency's nominal face value and the daily arithmetic Iranians had been doing in their heads for decades.

The dual labeling on this note — both denominations printed together — was a transitional measure during the legal changeover period and is specific to this series.