This is due to the fact that along with the process of the monetary economy, the price of rice, which was used as a standard in pricing various commodities, kept falling (the general price rice in spite of the low price of rice), and it became obvious that shogunate direct retainers (hatamoto) and low-level vassal, whose salary was determined based on rice price, were hard up financially.
貨幣経済の進展にともない、諸物価の基準であった米価は下落を続け（米価安の諸色高）、それを俸禄の単位としていた旗本・御家人の困窮が顕著なものとなったからである。