A CPA who knows corporate finance,
accounting and tax from the inside.

More than twenty years of hands-on experience across corporate finance, accounting and tax — 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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Track recordSelected engagements

  • Christian Dior G.K.2022–2023First-year audit after a change of auditor; size-based enterprise tax analysis
  • Breitling Japan2023–2024Accounting and finance support during an SAP S/4HANA implementation
  • Tiffany & Co. Japan2024Fixed asset accounting for new store openings
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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.

Luxury Industry Advisory

Strategy, accounting and finance advice grounded in how brand businesses actually operate, from a CPA who has worked inside the world's largest luxury groups and published on LVMH, Richemont, Kering and Hermès.

International Tax & Foreign-Owned Companies

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

Finance Automation & AI Advisory

Which processes to automate, and which decisions to keep with people. Process inventory, suitability, ROI and internal control, judged from the finance leader's seat.

Why Choose Us

Reason 1 Corporate finance from the inside

Head of accounting at the world’s largest luxury group and head of finance at Zegna — advice grounded in how operating companies actually run.

Reason 2 Direct English with your head office

Fully bilingual, with an Executive MBA from Oxford. IFRS and head-office reporting handled in English, with no interpreter in between.

Reason 3 Every engagement handled by the principal

The principal handles every engagement personally, drawing on years inside operating companies for solutions you can actually implement.

Message

I am Hiroaki Tamura, principal of Tamura 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 finance, accounting, tax or audit, please feel free to get in touch.

CPA registration no. 23565 (JICPA)

Hiroaki Tamura — CPA (Japan), Licensed Tax Accountant, MBA (Oxford)


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