Group Summary

The company was founded on April 1, 2008, by Kengo Maekawa, a CPA (Certified Public Tax Accountant)


Employees : 130  (As of May 2018)

Included members:

・Certified Public Accountant
・Certified Public Tax Accountant
・Licensed Social Insurance & Labor Consultant
・Administrative Scriveners
・Marine Procedure Commission Agent
・Additional members who have passed CPA & Tax Accountant examinations
・Administrative Support Staff


JPY 100,000,000 (group total)

・Shiodome Partners (JP) Co., Limited
・Shiodome Partners Tax Corporation
・Shiodome Partners Law Firm
・Shiodome Partners HR Firm
・Shiodome Gyoseishoshi Corporation
・Shiodome Sea Agency Firm
・Shiodome Property Limited
・Shiododome Patent Firm
・Shiodome Partners (USA) Inc.

Client Base

Over 500 companies (group total as of May 2018)


Industry / business type

Company size (in hundred million JPY)




Japanese subsidiary net sales:  1 ~ 50
(Consolidated net sales: 3,000 )




Japanese subsidiary net sales: 100
(Consolidated net sales: 3,600 )




Japanese subsidiary net sales: 150
(Consolidated net sales: 2 billion )


Office service


Net sales: 200


Public information system


Consolidated net sales: 1,500


IT service


Consolidated net sales: 100


Information service sector


Consolidated net sales: 10


Software/ Media streaming


Consolidated net sales: 20


Application development


Consolidated net sales: 100

Data mining


Net sales: 300

4th Floor, Dai 2 Maru Taka Building, 7-13-8 Ginza, Chuo-ku, Tokyo 104-0061, Japan

03-6228-5505 (+81)

PKF International

Shiodome Partners Group is part of the PKF International (PKFI) global network of firms that provide accounting and business advisory services to commercial institutions all over the world. PKF International was founded in 1969, starting with member firms based in the United Kingdom, United States, Canada, and Australia. The global organization has expanded considerably since then, and now maintains offices in most major cities around the world.

We are partnered with Hiki Audit Corporation, an Osaka-based audit institution and upstanding member firm within the PFK International organization. All audit services for domestic and international clients are provided in full cooperation with Hiki Audit Corporation.

Our Focus

・Software Options
・Report Options
・On-site Bookkeeping Options
・Bilingual Bookkeeping

2.One Stop
・Access to a range of specialized professionals:
- CPA, Certified Tax Accountants, Administrative Scriveners, Certified Labor and Social Insurance Consultants, Lawyers etc.
- No need to go to different service providers = time and cost savings

・Access to each of our members core competencies and certifications.
・Integration of our departments allows for efficient data and accurate procedures -> Maintain Consistency
・Multiple checks & professional advice

・Our customers are from a wide range of industries including IT, Health & Beauty, Art & Design, Airline Companies, Finance, Restaurant etc.

Jul 2007

Maekawa CPA Office was established in Minato-ku (by Kengo Maekawa, the Group CEO)

Apr 2008

For the purpose of consulting on accounting, Shiodome Partners Limited. was established Maekawa CPA Office changed its name to Shiodome Partners Accounting Firm.

Nov 2008

Shiodome Certified Social Insurance & Labor Consultant Firm was established by Makoto Imai

Jan 2009

Shiodome Partners Law Firm was established by Hideki Sato

Feb 2009

Koguchi Sea Agency Firm was established by Taiki Koguchi

Mar 2009

Shiodome Gyoseishoshi Lawyer Firm was established by Kengo Maekawa

Sep 2009

HQ relocation to Shinbashi, Minato-ku

Mar 2010

Koguchi Sea Agency Firm changed its name to Shiodome Sea Agency Firm

Aug 2012

Shiodome Partners Tax Corporation was established by Shiodome Partners Accounting Firm merged with Ryuta Sato CPTA office.

Dec 2012

Shiodome Partners Tax Corporation Okinawa office was established

Mar 2014

Shiodome Partners (USA) Inc. was established in Hawaii