However, since charging high annual interest rates at 50% was admitted even in Ku-Suiko, local administrative organizations such as the Kokufu (provincial office) and Gunke (public office) started to forcibly loan seed rice to peasants in spring, although such seed rice should have been stored in the provincial offices' warehouse as Shozei, the rice tax (belonging to So-Yo-Cho system [a tax system, corvee]).
しかし、公出挙でも年利50％と高利が認められていたので、国府や郡家などの地方機関は春になると正税（租庸調）の種籾を百姓へ強制的に貸与した。