Company History

April 2008

  • Shiodome Partners Limited established

September 2009

  • Head office relocated to Shinbashi 1-chome

August 2012

  • Shiodome Partners Tax Co. established

June 2014

  • Shiodome Partners AS Co. established

March 2018

  • Head office relocated to Ginza 7-chome

June 2018

  • Joined PKF International

January 2019

  • Merged with Kyodo Tax Corporation

April 2019

  • Merged with Lockhart & Co. and integrated management

September 2020

  • Shiodome Partners SR Co. established

Dec 2020

  • Shiodome Partners JS Co. established

March 2022

  • Head office relocated to Shiodome City Center

April 2022

  • Merged with No-Tas Management and Labor Office and integrated management

October 2022

  • Merged with Nakamoto International Tax Corporation and integrated management

November 2022

  • Joined RSM International, the 6th largest in the world. Our 5 companies joined RSM and changed names.
  • RSM Shiodome Partners Limited
  • RSM Shiodome Partners Tax Co.
  • RSM Shiodome Partners SR Co.
  • RSM Shiodome Partners AS Co.
  • RSM Shiodome Partners JS Co.

January 2023

  • Merged with WARC LIGHT Tax Corporation and integrated management

June 2023

  • Opened Sapporo Office

September 2024

  • Opened Osaka Office

January 2025

  • Merged with Hiyama Labor Affairs Consulting Office and integrated management
  • Opened Kushiro Office

March 2025

  • Opened Fukuoka Office

May 2025

  • Opened Sendai Office

July 2025

  • Merged with Nakai Immigration Services LPC and integrated management

September 2025

  • Opened Hiroshima Office

October 2025

  • Merged with RSM Japan Tax Co. (joined RSM in 2007)
  • Opened Shinjuku Office