Our Japan Team

International Coverage...

Our dedicated team works diligently and collaboratively to bring you individualized attention and effective, timely, 

tax solutions. We enjoy doing what we do, which translates into positive client experiences.  

Darkoa Naito-Hanke, E.A. 

内藤ハンケ ダァコァ


Senior Principal

Darkoa has been practicing for close to 20 years, in and outside the United States. She initially trained with and worked for 
PricewaterhouseCoopers-IAS and KPMG-IES for almost ten years, during which she concentrated her work and training on the preparation of Japanese and U.S. income tax returns. She then established her own private tax practice close to Frankfurt/Main Germany, serving clients worldwide, after her move there with her German husband. She holds a BA in Business Administration and an MA in International Studies. She has significant experience of working with complex federal and state income tax returns, for taxpayers from all walks of life, including employees, business owners, investors, diplomats and high-net worth individuals. In addition, due to her multi-lingual skills, and her training and experience in one of the world's largest international expatriate tax practices, she is able to work with the tax return of any foreign country, in preparing a U.S. income tax return.

Sumiko Ragland
内藤ラグランド 澄子

Tax Preparer & E-file Principal

Sumiko worked for many years with the Financial Industry Regulatory Authority (FINRA) before becoming a tax return preparer. Before working for FINRA, she also briefly supported the PwC-IAS department in Tokyo, processing U.S. tax returns for client delivery. Sumiko is currently training to be an Enrolled Agent and spends some of her time volunteering for the IRS by assisting taxpayers at IRS tax centers in Texas during the busy season. She is multi-lingual.


Telephone: +49-6101-995-3959/0235

Fax: +49-06101-995-3958

Address: An der Kirche 5, 61118 Bad Vilbel, Germany