The plan, proposed by the Central Bank of Iran, had been ratified during a cabinet session on July 31.
The government spokesman had earlier noted that the bill would be proposed to the Parliament as a double-urgent motion.
Iranian people currently discuss their monetary transactions in both rials and informally but more commonly in tomans. A toman is worth 10 rials.
If passed by the parliament and approved by the Guardian Council, Iran’s Central Bank would in effect devalue the rial and rename it as toman.
The bank would have two years to create the new toman currency, returning a currency name that has not been officially used since the 1930s.
Once created, a toman will be worth 100 “parseh”, a new currency to be created for the first time.
Proposals to remove four zeros from the currency have been floated since 2008, but the idea has gained strength as the rial lost more than 60 percent of its value in 2018 despite a recent recovery in defiance of US sanctions.
Rial weakness disrupted Iran’s foreign trade last year and helped boost annual inflation fourfold to nearly 40 percent in November.
The policies of the Central Bank of Iran in the past few months have helped the currency regain almost 30 percent of its lost value.
On Wednesday, the rial traded 116,500 to $1. At the time of the 2015 nuclear deal, the rial traded 32,000 to the dollar.