Group Summary

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


Employees : 85  (As of January 2016)

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 50,000,000 (group total)

・Shiodome Partners (JP) Co., Limited
・Shiodome Partners Tax Corporation
・Shiodome Partners Law Firm
・Shiodome Partners HR Office
・Shiodome Gyoseishoshi Law Firm
・Shiodome Sea Agency Firm
・Shiodome Partners (HK) Co., Limited
・Shiododome Partners (Singapore) Pte., Limited
・Shiodome Partners (USA) Inc.

Client Base

Over 500 companies (group total as of July 2015)

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

Overseas Subsidiaries

Shiodome Partners Group HongKong Office
1019, Chinachem Golden Plaza, 77Mody Rd., Tsim Sha Tsui East, Kowloon, Hong Kong

Shiodome Partners Group Singapore Office
International Plaza, #30-17, 10 Anson Road, 079903, Singapore

USA (Hawaii)
Shiodome Partners (USA) Inc.
1888 Kalakau Avenue, Suite C-312, Honolulu, HI 96815

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

・We specialized in SME`s, but our clients range from individuals to listed companies.
・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