This system is believed to have been introduced for such reasons as securing a well-balanced real income in proportion to the fertility of land and tax rate, inhibiting hatamoto from exercising their right to chigyo-chi, and preventing villagers from uniting by dividing the village with the presence of several small-stipendiary chigyo-tori (recipients of land revenue).
この制度導入の背景には土地の良し悪しや年貢率による実収とのバランス、旗本による知行権行使の抑制、小禄知行取の存在、村を分断して農民たちの団結を防ぐなどが言われている。