Flat organization structure with highly motivated specialists and has sincere dialogues with the client.
Since its establishment in 1969, Yaesu Audit & Co. has continually strived to seek a deeper understanding of each client's organization and culture through the most important communication, which is an audit fundamental.
A membership agreement with Kreston Global was concluded in 2012 to respond to the needs of our audit clients which are expanding overseas. As a member of this global network which connects over a 110 countries, we are responding to increased globalization, complexities and evolving accounting regulations in an appropriate manner.
We not only focus on fairness but also flexibility and conducting audits which suit the size and circumstances in a rational matter.
Above all, to contribute to the society at all times and make a small contribution to the infrastructure of the capital markets.
Yaesu Audit & Co. respects each individual's personality, specialties and diversity and continues to enhance the value as an audit firm.

Message from the Chairman

Toward the creation of new “Audit Value”
~ Auditing in depth and new value creation 〜

The progress of digital innovation has brought about major changes and evolutions in the basic structure of industry, the way people work, and their daily lives.

However, with the prolonged spread of COVID-19, the collapse of the existing international order due to the outbreak of the Ukraine crisis, and the instability of natural resources and food supplies, the world now faces unprecedented chaos and uncertainty not seen in recent years.

In the current days, excessive information including fake news is crossing the digital space. In these times, I believe that the role of audit as a social infrastructure to identify and guarantee reliable financial information is gaining more and more importance.

As for the recent movement regarding the audit system, the International Auditing and Assurance Standards Board (IAASB) has announced new audit quality management standards consisting of ISQM1, ISQM2 and ISA220 and the preparation for its introduction is now underway in Japan.

As a member of the international network of Kreston Global, Yaesu Audit & Co. has also started ISQM project team since last year with the aim of introducing new standards in December 2022. We will continue our steady efforts to establish the auditing system that is further trusted by society.

Now, even in the near-future society, where advanced digitization and AI are accelerating, we believe that the universal value of an organization lies in its "People" and good teamwork.

Yaesu Audit & Co. emphasizes the humanity, expertise and diversity of each partner and staff member, incorporating a global perspective, and works as one to develop a solid and open organization and create new “Audit Value.”

July 1, 2022


Corporate Governance System

Audit partners of YAESU AUDIT & Co. (15 unlimited liability members) directly participate in the firm’s management based on the philosophy of “contribute to the society with fairness.” YAESU AUDIT & Co. maintains discipline within an organization through mutual surveillance and supervision through consultations with the members’ committee, quality control committee and review committee, etc.

Although the recently issued “Principles for Effective Management of Audit Firms” (March 31, 2017) has not been adopted yet, we concur with the principles to improve audit quality, foster an organizational culture which emphasizes continuous improvement and enhance the transparency.

For details on the management operation structure to fairly and appropriately perform the activities of YAESU AUDIT & Co., please refer Here

Audit Quality Report 2021


  1. Philosophy
  2. Culture
  3. Governance
  4. Quality management
  5. Audit Quality Indicator
  6. External review
  7. Clients
  8. Profile

Company Overview

Yaesu Audit & Co.
Tsutomu Saito
December 15, 1969
Japanese Certified Public Accountants (partners): 15
Japanese Certified Public Accountants (associates): 43
Audit assistant (associates): 15
Others: 3
Total (as of July 2022): 76
Kioicho Building 17F, 3-12 Kioicho, Chiyoda-ku 102-0094
TEL: +81-3-5275-5260 / FAX: +81-3-5275-5262


November 4, 1969
Shigenari Motoyoshi, a Japanese Certified Public Accountant, and four other members applied for establishment of a firm to the Japanese Ministry of Finance
December 15, 1969
Established a Yaesu Jimusho Audit Company at 1-7 Kyobashi, Chuo-ku, Tokyo
June 25, 1977
Relocated offices to 2-12-4 Kyobashi, Chuo-ku, Tokyo
November 25, 1997
Renamed the firm to Yaesu Audit & Co.
June 15, 2007
Relocated offices to 1-5-17 Yaesu, Chuo-ku, Tokyo
June 1, 2012
Became a member firm of Kreston International (current: Kreston Global)
June 20, 2016
Relocated offices to Kioicho Building, 3-12 Kioicho, Chiyoda-ku, Tokyo