In order to control the processes of production and distribution of commodities and lower prices, he authorized guilds of handicraftsmen as a trade guild (kabunakama) and encouraged its organization, while imposing business taxes called unjo, myoga on them.
商品生産・流通を掌握し、物価を引き下げるため手工業者の仲間組織を株仲間として公認、奨励して、そこに運上・冥加などを課税した。