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Services

Japanese Services Group

Unique markets and tailored solutions

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Why JSG?

How are we different?

Deloitte Touche Tohmatsu Limited (DTTL) adopted a global lead client service partner (GLCSP) system to continuously improve the quality of our professional services for global companies.

At Deloitte, the GLCSP holds ultimate responsibility for overall client service. All participating teams are working as one Deloitte under the GLCSP's leadership to deliver one-stop service to global clients.

The global one-stop service structure enables DTTL to resolve issues swiftly and report results to parent companies in a timely fashion.

  • GLCSP: Responsible for client satisfaction and improvement of overall service quality, with the aim of exceeding expectations. This individual serves as the key point of contact, establishing strong relationships with management and acting as a coordinator with our member firms in each country to provide high-quality services.
  • Regional LCSP: Responsible for client satisfaction and improvement of service quality for a specific region.
  • JSG: Supports our service teams in each country by delivering services and communications effectively across diverse cultures, languages, and geographic boundaries.

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JSG Tax Newsletter

The JSG tax newsletter provides updates for Japanese multinational corporations operating in the United States. US federal and state tax laws and regulations are constantly changing, so stay informed and up to date on current tax trends and be prepared for the latest tax developments.

Leadership contact

George Warnock

George Warnock

Managing Partner | JSG & CSG, Americas

George leads our Global Country Services Groups overseeing the activities of the Global Chinese, Japanese, and Korean Services Groups. He has more than 35 years of auditing and accounting experience s... More

Akira Yamamoto

Akira Yamamoto

Leader | US JSG

Akira has more than 25 years of experience serving clients primarily in the automotive industry. He specializes in services to multinational companies that are Japanese-owned. Akira leads Japanese ini... More

Naofumi Yamazumi

Naofumi Yamazumi

Deputy Leader | US JSG

Yamazumi-san has more than 20 years of professional experience and was involved with Deloitte Japan Tohmatsu Clients & Industries (C&I) since October 2010. As a C&I partner, he was responsible for Jap... More

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