tel +81-3-5219-6554

  • +81-3-5219-6554
  • mail

Asset Management & Asset Succession NATURE GROUPAsset Management & Asset Succession NATURE GROUP

Director Toshiyuki AshidaDirector Toshiyuki Ashida

Director Toshiyuki AshidaDirector Toshiyuki Ashida


The LargestExpert Firm in Japan

The LargestExpert Firm
in Japan

As a consultant firm in the highly specialized field of international taxes, we will respond attentively to the wide range of needs of our clients.
We take confidence in the quality of our services that are achieved through our position as a niche-top organization.



We always keep ourselves updated on the latest international tax information in and out of Japan,and resolve many inquiries of our global customers, all the while steadily accumulating know-how along the way.
We now handle over 500 international tax projects per year.

Excellent Language Assistance

Excellent Language

Our company has many employees that are fluent in a diverse set of languages including English, Spanish, Chinese, and Korean.
By communicating directly with our clients in their native language and offering a one-stop solution with our business partners, it allows our firm to implement solutions and offer our services at a fast pace.


There are values that we strive to maintain ”to be a professional in our field.



We treat everyone in the community, including our clients, all of the stakeholders of our company and their family members, to pursue their happiness.


Make people happy

We will realize your happiness through providing solutions to your investment and inheritance issues.




To provide additional value to contribute to society.



To be the organization of choice, we will differentiate our products and services and continue to evolve at super speed.



Each person plays the designated role for the optimization of the entire company.



In order for the members to achieve their happiness, we will work hard but have fun and enjoy at the same time.



Professionals regarding International Taxation

Nature Tax Firm was founded as a tax firm that specializes in international taxation.

With vast experiences working for a major tax firm in Japan, we have been able to assist our clients with their worldwide tax matters.

Our firm is able to handle countless numbers of complex cases as we are up to date on the latest tax information worldwide.
Due to our experience, we have been able to meet our clients’ needs and with each new case,
we have been able to gain even more knowledge and become highly qualified in our field.

The Nature Group will be ethically responsible, abide by the laws and regulations set in place, be conscious of the social responsibilities.
We aim to not only meet but also go beyond our clients’ demands and needs,
and always looking to improve the quality of our service.

DirectorToshiyuki Ashida



Director Toshiyuki Ashida
Address Group Head Office ( Tokyo Office ):
2-26-3 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan
Sumitomo Fudosan, Kayabacho Bldg.No.2 5F
Telephone +81-(0)3-5219-6554


Tokyo Office

Tokyo Office : Group Head Office

2-26-3 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan
Sumitomo Fudosan, Kayabacho Bldg.No.2 5F

Nearest station

Hatchobori Station : 6 minutes’ walk






Osaka Office

Osaka Office

Grand Front Osaka Tower-C 10F 3-1 Ofukacho Kita-ku,
Osaka-shi, Osaka-fu 530-0011

Nearest station

Osaka Station : 3 minutes’ walk

Umeda Station : 3 minutes’ walk

Osaka-umeda Station : 5 minutes’ walk







About the Nature Group

The Nature Group consists of two affiliate companies, whom work together to provide a high-quality service.

About the Nature Group About the Nature Group


We provide various services related to mainly investment and inheritance.


Tax Return Service

  • Income Tax Return
  • Corporate Tax Return
  • Tax Agent
  • Overseas Tax Return Assistance


  • Real Estate Investment Consulting
  • Fund Related Consulting
  • International Tax Consulting
  • International Investment Consulting


Tax Return Service

  • Inheritance Tax Return
  • Gift Tax Return
  • Inheritance Exemption Application
  • Overseas Tax Return Assistance


  • Inheritance・Business Succession Consulting
  • Securing of Tax Payment Funds Consulting
  • Testamentary Trust Consulting
  • M&A Consulting


Please fill in the necessary items in the following reception form and send it.
The person in charge will contact you again. Please refrain from the business of the trader.
If you do not receive a response from us, we apologize for the inconvenience, but we would greatly appreciate it if you could contact us through the following phone number(+81-3-5219-6554+81-3-5219-6554).

Reason for Inquiry
Full Name
Company Name
Contact Phone Number
Mail Address
Desired date
and time of

*Japan time

*We are unable to schedule an appointment the same day or the next business day.

*In the case we receive your request during the weekend, we accept appointments the day after

Details regarding reasoning for appointment and any requests
Terms of Service

Nature International (hereinafter, "the Group") will provide you with an optimal proposal based on your circumstances after careful consideration. However, as it is difficult for us to fully ascertain your conditions and provide a responsible response based on the information from this form, we are unable to accept tax-related inquiries, etc. using this form alone. Therefore, we are not liable for any damage caused by our response to such inquiries or our failure to respond to such inquires. A client relationship between you and the Group will not be established based on the information you have transmitted using this inquiry form. We make no guarantees as to whether we will respond to inquiries using this form or the content of our response to such inquiries. We may refuse to respond to inquiries that we have deemed inappropriate and will not be obliged to disclose the reasons for our decision, etc. Please use this form at your own risk. The Group assumes no liability in the unlikely event that the use of this form has caused any disadvantage or damage. The personal information transmitted using this form will be processed appropriately within the scope of the purpose of use stipulated in the privacy policy on this website.

This site uses cookies. By accessing, you agree to the use of cookies.

Nature International (hereinafter, “the Group”) has established the following privacy policy and all Group employees will handle personal information with the utmost care and do their best to protect personal information in compliance with this privacy policy.

1. Compliance with laws and regulations, etc. relating to personal information

The Group will handle personal information in compliance with laws and regulations, such as the Act on the Protection of Personal Information, and guidelines, etc.

2. Collection of personal information

The Group will acquire personal information in an appropriate manner as necessary.

3. Purpose of use of personal information

The Group will use personal information for the following purposes to the extent necessary for its services:

4. Provision of personal information to third parties

The Group will never provide personal information to any third party without the consent of the individual. However, this shall not apply to the provision of information under laws and regulations such as the Act on the Protection of Personal Information, the provision of information as necessary to protect human life or property, or the provision of information necessary to cooperate with public institutions such as the police and the courts.

5. Proper management of personal information

The Group will endeavor to maintain the accuracy of personal information and manage it securely. We will also take thorough information security measures against unauthorized access, computer viruses, etc. in order to prevent personal information from being lost, altered or divulged, etc.

6. Disclosure, correction and discontinuation of use of personal information, etc.

The Group will respond to the reasonable extent to any request made by an individual to disclose, correct or delete their personal information, etc.

7. Maintenance and improvement of the privacy policy

The Group will endeavor to inspect, audit and continually improve this privacy policy and the state of its operation in accordance with laws and regulations and taking into consideration various opinions. Accordingly, the Group may change this privacy policy as necessary.

8. Inquiries concerning the handling of personal information

The Group will respond appropriately to opinions, questions, complaints and other inquiries concerning the handling of personal information.

Nature International Representative Toshiyuki Ashida

Basic Principles

Nature International (hereinafter, “the Company”) recognizes that the information assets, including valuable information, that it handles in its business as a professional firm responding to the complex circumstances of its clients and providing solutions tailored to client needs is extremely important as the foundation of the Company. The Company recognizes the importance of protecting these information assets from risks such as leakage, damage and loss and, as such, all officers and employees will comply with this basic policy and take measures to maintain information security such as ensuring the confidentiality, integrity and availability of information assets.

Basic policy

  1. The Company will formulate and work in accordance with the information security policy as well as comply with laws and regulations, rules or other norms pertaining to information security and agreements concluded with you in order to protect information assets.
  2. The Company will clarify criteria for analyzing and evaluating risks to information assets such as leakage, damage and loss, establish a systematic risk assessment method, and conduct regular risk assessments. We will also implement necessary and appropriate security measures based on the outcome of risk assessment.
  3. The Company will establish an information security system under the control of the officer in charge and clarify authority and responsibility for information security. And all employees will regularly undertake education and training to enhance their awareness of the importance of information security and facilitate their proper handling of information assets.
  4. The Company will conduct regular inspections and audits of the state of compliance with the information security policy and the handling of information assets and promptly take corrective action when deficiencies or areas for improvement are discovered.
  5. The Company will take appropriate measures to respond to information security-related events and incidents. In the unlikely event that such an event or incident were to occur, we would establish response procedures to minimize damage in advance as well as promptly respond and take appropriate corrective action in the case of an emergency. In particular, we will ensure our business continuity by establishing a management framework for incidents likely to cause business interruptions and regularly conducting recovery tests and reviews.
  6. The Company will establish, implement, continually review and improve an information security management system which sets forth targets for the realization of these basic principles.

We have acquired ISO/IEC27001 certification.

Enacted January 10, 2016 Revised August 21, 2018

Nature International Representative Toshiyuki Ashida