
About Us
Why should you choose Yamaguchi Consulting?
Our operational model of full remote work enables us to provide customized services at competitive rates. Our team's broad expertise in international taxation and back-office support for foreign companies is anchored by our principal's experience in major Big4 accounting firms. We offer high-quality services in English, specializing in market entry facilitation in Japan and supporting visa applications for foreign managers.
Providing Full Support to Our Clients
We focus on delivering comprehensive tax and accounting support to foreign businesses and executives in Japan. Our services cover everything necessary for a smooth transition into the Japanese market, from securing management visas and setting up new companies to complex financial reporting and compliance with local regulations. Our English communication ensures barrier-free interactions, providing peace of mind and fostering trust.
Our Founding Mission
After joining a bank as a new graduate, our principal, Yoshio Yamaguchi, left during a period of financial distress and began pursuing a career as a certified public accountant (CPA). He passed the CPA exam at age 30 and joined Azusa Audit Corporation. Later, he moved to Deloitte Tohmatsu Tax Co., where he primarily handled foreign-owned clients, gaining extensive practical experience in international taxation.
Recognizing the business potential due to the limited number of professionals well-versed in both English and tax matters, he established an accounting firm in October 2019 to provide reasonably priced services to foreign clients and foreign-owned companies.
After going independent, he used his available time to build a website, publishing articles useful to foreign clients and foreign-owned companies. About two years later, inquiries began to increase, and the firm started gaining clients from these groups.
With a fully remote work style without a physical office and a team structure based on close partnerships with affiliated firms, he aims to provide high-quality services at reasonable prices.

Trusted by Clients Worldwide
Yamaguchi Consulting serves a diverse range of Japanese and international clients, underscoring our reputation for reliability and expertise. As of October 2024, our clients include:
- 65 corporate clients
- 122 individual clients
- 320 foreign corporate clients for consumption tax filing only
Clients
Clients | Business Description | Services Provided |
NiceHash
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Cryptocurrency mining platform provider | Preparation and filing of Japanese consumption tax returns |
E.VAT Master |
Leading Chinese indirect tax service provider | Completed final consumption tax returns for approximately 350 clients (Chinese companies involved in cross-border business) |
Vanir Global Markets Japan |
Japanese subsidiary of a Singaporean corporation; engages in electricity futures trading | Accounting, payroll management, payment processing, and tax filing |
Kato Kagaku Co., Ltd. |
Manufacturer of sugar products and hotel operator | Reclassification of financial statements for international branches to align with Japanese accounting standards |
TEXeg Co., Ltd. |
Designs and develops precision machinery | Tax return preparation, financial management for international subsidiaries, and budget management support |
Commitment to Your Business Success
We are dedicated to your business's success, addressing your tax and accounting needs promptly and effectively. Our team of skilled professionals is here to support you and ensure you can concentrate on growing your business in Japan. For any consultations related to business operations or international taxation, count on us to guide you expertly.
Company Information
Office: Yamaguchi Consulting
CEO: Yoshio Yamaguchi
Email: yamaguchi@yconsulting.co.jp
Phone: 03-6904-1955
Staff: 1 CEO, 2 Employees, Several Partner consultants
Address: 803 Look Heights Shinjuku, 5-18-20 Shinjuku, Tokyo, 160-0022 (Virtual office)
Share Capital: 50 million yen
Since: October 2019
Certified Public Accountant Registration: 26311
Certified Tax Accountant Registration: 26311
Clients (as of October 2024):
- 65 corporate clients
- 122 individual clients
- 320 foreign corporate clients for consumption tax filing only

Get in Touch
Have questions or need more information about our services? Contact us anytime—our professional staff is ready to tailor solutions to your needs.