Kimiya Yamaguchi
I challenge the status quo to transform the tax industry. Let’s build a tomorrow better than today.

Kimiya Yamaguchi

Partner, Tax Technology and Transformation, Ernst & Young Tax Co.

Helping my clients to navigate business transformation

Kimiya Yamaguchi is a Partner of Ernst & Young Tax Co, specialized in supporting the tax and accounting transformation of Japanese multinational companies. He has a comprehensive track record of consulting services, including strategy formulation for tax departments, establishment of global tax governance, tax process reform and technology implementation.

He began his professional career at Ernst & Young Tax Co., where he engaged in taxation advisory services. After gaining additional expertise outside the firm in the management division of an operating company and later at a leading consulting firm, he rejoined EY in 2017.

He is a Certified Public Tax Accountant and a part-time lecturer at the Graduate School of Accountancy, Waseda University

Building a better working world

I serve my clients by developing tax-oriented business solutions. Corporate tax departments are facing increasingly complex issues in recent years, driving the need for a comprehensive approach combined with traditional tax advisories. I see my mission as helping tax departments to progress from a defensive role as the guardians of compliance to a frontline position as professionals making a valuable contribution to corporate growth. I am also supporting the transformation of the wider tax industry by assisting my clients with organizational and business reforms and technology implementation.

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