A CPA who knows corporate accounting
from the inside.

Twenty years of hands-on accounting, tax and finance — including leading finance teams at foreign-owned companies in Japan —
combined with generative AI and RPA, to support you from routine compliance to finance transformation.

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Services

Accounting & Tax Advisory

Over 20 years of audit, corporate accounting and tax experience. The principal handles every engagement personally, whatever the size of your company.

International Tax & Foreign-Owned Companies

A CPA with an Oxford MBA and experience as head of finance at foreign-owned companies supports English-language accounting, international tax and head-office reporting.

AI & RPA for Finance

We automate and streamline finance operations with UiPath RPA and generative AI, from design through to day-to-day adoption.

Consulting Services

Financial analysis, IPO readiness and business improvement consulting.
*Consulting services are delivered by Inter-Arc Consulting Co., Ltd.

Why Choose Us

Reason 1 Over 20 years in accounting and tax

Every engagement is handled personally by the principal, who brings over 20 years of audit, corporate accounting and tax experience, IFRS included.

Reason 2 Genuinely strong in English

Head of finance at foreign-owned companies and an Oxford MBA — business-level English for working directly with your head office.

Reason 3 Client-centred, practical advice

Years spent inside operating companies as well as in audit mean advice you can actually implement, not textbook theory.

Message

I am Hiroaki Tamura, principal of Tamura Hiroaki Accounting Firm.

Our strengths are English-language support, IFRS, and the practical use of RPA (UiPath) and generative AI. We do not stop at telling you what the answer should be — we stay with the work until the issue is resolved.

Accounting and tax information is easy to come by today, generative AI included. In practice, though, there are areas AI alone cannot cover: framing the premises correctly, understanding what actually happened in a transaction, assessing risk, and managing internal and external stakeholders. We step into exactly that territory, while using AI and RPA where they genuinely excel, and propose solutions you can act on.

If you have a question about accounting, tax or audit, please feel free to get in touch.

JCPA registration number: 23565

CPA・Tax Accountant・MBA Hiroaki Tamura