He became a member of shogun's council of elders of director of finance on October 31, 1717, and supported the Kyoho reform by Shogun Yoshimune TOKUGAWA.
享保2年（1717年）9月27日に財政をあずかる勝手掛老中となり、将軍徳川吉宗の享保の改革を支えた。