During this period, some policies, which affected the social structure, were developed: the Koden kanmotsu rippo, which fixed the domestic tax rate, was introduced; bechimyo (large territories including mountains and forests) was authorized alongside small-sized Myoden; Ikkoku heikinyaku (taxes and labor uniformly imposed on every private estate in one province) in order to get financial resources for large-scale projects.
この期間、国内税率を一律固定化する公田官物率法が導入されたり、小規模な名田に並行して広く領域的な別名が公認されるようになったり、大規模事業の財源として一国単位で一律に課税する一国平均役が成立するなど、社会構造に変革を及ぼすような政策がとられた。