The Imperial Treasurer was a new office in the government of the Emperor of Rokugan created in 1170 during the first day of the reign of Iweko I. The position was created so as to remove some of the Emerald Champion's less important duties, as overseeing the management of taxes and the allocation of Imperial funds. He was in charge of the Ministry of Excahnge. The Imperial Treasury was built in the capital, Toshi Ranbo.