Certified Public Tax Accountant / U.S. CPA Shinya Tominaga
Graduated from Sophia University, Faculty of Foreign Studies and University of New Haven, M.S. in Sport Management.
2009: Joined Mitsubishi Motors Corporation.
Responsible for sales and marketing in Latin American markets, supporting local production in Brazil. Joined language trainee program in Brazil, programmed by the company.
2015: Joined Kraft Heinz Japan.
Managed budget-to-actual analysis for the grocery business and improved profitability through pricing strategy reviews. Obtained U.S. CPA qualification during this period.
2017: Joined McDonald’s Japan.
Dedicated to financial planning for restaurant and franchise businesses, investment analysis for store development, and cash flow planning. Currently leading tax-related compliances. Qualified as a Certified Public Tax Accountant in 2025.
Volunteering as a leader for accounting group for the Japan Amputee Football Association, by supporting financial compliance and subsidy acquisitions.
I have compiled some information about my philosophy as the firm’s representative and my goals as a tax accountant to help you get to know me better.
I hope this provides a clearer picture of who I am and serves as a foundation for our future communication.
How do you spend your days off?
Cooking at home
On most weekday evenings and weekends, you’ll find me in the kitchen. I particularly enjoy cooking Italian cuisine. To me, cooking is a creative process of building something from scratch—a type of problem-solving and joy that resonates with my professional work.
How would you describe yourself in one word?
An Explorative Analyst
My driving force is a deep-seated curiosity to uncover the truths of unknown worlds. My travels to over 30 countries and experience living in three different nations have shaped my ability to dig deep into the “why” behind diverse perspectives, forming the basis of my analytical skills and global mindset today.
What do you value most in relationships?
Mutual Respect
I place great importance on respecting each individual’s unique character and passion, and engaging in honest, open dialogue. I strive to build equal partnerships where we can grow together through new discoveries.
What are your goals as a tax accountant?
To be an “External CFO” for my clients
My goal is to go beyond simple tax compliance. By leveraging my expertise in financial planning, I aim to contribute to your company’s growth as a strategic financial partner.
What inspired you to become a tax accountant?
A career with no retirement
I was drawn to the freedom of being able to work indefinitely by utilizing specialized expertise. The fact that I can constantly update my knowledge through continuous self-learning and apply it directly to help others was also a major factor.
Company Overview
| Firm Name | Tokyo International Tax & Accounting Office |
|---|---|
| Established | January 29, 2026 |
| Representative | Shinya Tominaga (Certified Public Tax Accountant / U.S. CPA) |
| Phone | +81-3-6850-2359, +81-70-9149-3367 |
| shinya.tominaga@tokyointertaxaccouning.jp | |
| Licensed Registration No. | 158351 |
| Office Hours | 9:00 – 19:00 (Available on weekends and holidays) |