[1] In 1988, he led the introduction of consumption tax under the Cabinet of Noboru Takeshita.
[1] In 2002, he was granted the degree of Doctor of Philosophy in Law for his study of Zaisei seisaku eno shiten : Zaisei saikensaku no kaiko to mosaku〈The Perspective to Fiscal Policy：The Reviews and Seeks of Fiscal Consolidation〉 from Waseda University according to the system of Ronbun Hakase peculiar to Japan (Degree Number：乙第1669号).
[2] He successively held the posts of the chairman of Yazaki Memorial Foundation for Science and Technology, the advisor of Yazaki and the chairman of History and Folklore Museum Promotion Association.
[1] In 2019, the Order of the Sacred Treasure, Gold and Silver Star was bestowed on him.
[3] Mamoru Ozaki published books such as Zei no jōshiki〈Heisei 13 nendo-ban〉[Common Sense in Tax〈2001 version〉] (Nikkei Business Publications).