A number of daimyo also adopted a method of calculating a harvest yield by reducing it by 20% and enforcing Kangenbiki (subtraction due to losses by drying) (this calculation was done by modifying three koku to 2 Koku 4 To (about 432 liters) by reducing it 20 percent and ending up with '1 Koku 2 To-dai').
また、大名によっては干減引2割を行って、収穫高を2割減で算定（3石を2割引の2石4斗に修正して、最終的に「1石2斗代」と算出）する方法を用いる藩もあった。