the muromachi bakufu imposed a specific tax called kurayaku (also known as dosoyaku ) on doso , and the tax was a major source of revenue for the bakufu . 室町幕府は土倉に対し、倉役（土倉役）と呼ばれる税を課し、主要財源の一つとなる。
therefore , he dampened spending using laws that regulated expenditures , while taking action to increase the production of rice through development of new fields , stabilizing incomes by adopting a fixed tax rate , establishing a system of the specific tax rice paied to shorten the obligatory stay of one year in edo to six months (agemai ), and authorizing the dojima rice exchange . そのため彼は倹約令で消費を抑える一方、新田開発による米の増産、定免法採用による収入の安定、上米令、堂島米会所の公認などをおこなった。
