This money lending was referred to as Zatokin (Zato money) or Kankin (officer money), with some Kengyo lending money to gokenin (immediate vassals of the shogunate) or low-ranking hatamoto (direct vassals of the shogun) with a low stipend and making excessive profits.
これを座頭金または官金と呼んだが、特に幕臣の中でも禄の薄い御家人や小身の旗本等に金を貸し付けて、暴利を得ていた検校もいた。