The policy, hanzei, allowed ryoshu to split nengu in half, out of all nengu that was supposed to be given to feudal lords as manor nengu and to a provincial governor as Kokugaryo nengu, to deliver to both feudal lords as nengu and the local warriors as rice provisions when needed.
半済とは、本来領主に納入すべき荘園の年貢や知行国主に納めるべき国衙領の年貢のうち、半分は領主に届けるものの、残り半分は兵糧米として現地の武士に与えてよいとするものである。