Tsuji Hongo Tax

What Tsuji Hongo Tax does

Tsuji Hongo Tax (辻・本郷 税理士法人) is a privately held Japanese professional tax corporation founded in April 2002, operating 84 domestic offices across all seven major Japanese regions and 7 overseas offices in Cambodia, Thailand, Myanmar, and New York. The firm provides comprehensive tax advisory, accounting, and consulting services to 20,164 corporate and individual clients, including a dedicated Inheritance Center (辻・本郷 相続センター) that handles 6,072 annual inheritance tax filings with 430 specialized staff, making it the industry leader by inheritance tax filing volume. Its core offerings include corporate tax advisory, international tax and transfer pricing consulting, business succession and corporate reorganization advisory, HR/labor consulting, bookkeeping outsourcing, and tax second opinion services, supported by a "Review Room" (審理室) of 50+ former National Tax Bureau officials for complex matters and audit defense.

The firm makes money through three primary streams: recurring subscription-style tax advisory engagements for corporate and individual clients, project-based professional services for inheritance/estate tax and M&A, and fee-based professional seminars (¥5,000–8,000 per session). Go-to-market is hybrid, combining event-driven acquisition (online and in-person seminars covering tax law changes, SaaS comparison, and professional education) with sales-led direct relationships via dedicated phone lines, free initial consultations, and a nationwide network that includes remote inheritance tax services. Distribution is reinforced by multi-channel content marketing including a tax topics blog, YouTube channel, and three newsletter types.

The firm has built a 17+ subsidiary group ecosystem spanning law (TH Law Firm), social insurance/labor, audit, IT consulting, M&A (including a joint venture with SBI Holdings), insurance, asset management, family office, and CFO outsourcing services, enabling cross-disciplinary solutions. The firm employs 2,340 staff, is led by Representative Director 桑木小恵子 (Kuwa-ki Koeko) with Managing Director 藤田利彦 (Fujita Toshihiko, former Director-General of Regional Taxation Bureaus), and includes external directors who are former Vice-Ministers of Finance and Economy, Trade and Industry, plus an advisory panel of former senior National Tax Agency officials. Revenue is not publicly disclosed, and no external funding or public listing is evident.

Name

Tsuji Hongo Tax

Legal name

辻・本郷 税理士法人

Website

https://ht-tax.or.jp

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Tsuji Hongo Tax is Japan's largest tax firm by office count, operating 84 domestic and 7 overseas offices with 2,340 employees serving 20,164 corporate and individual clients across tax advisory, inheritance planning, international tax, M&A, and cross-disciplinary consulting via a 17+ subsidiary group ecosystem.

Ownership category

akta.pro rank

Product category

Tax Advisory and Accounting Services

NAICS

Offices of Certified Public Accountants (541211), Accounting, Tax Preparation, Bookkeeping, and Payroll Services (5412), Other Accounting Services (541219)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro industry

PRIMARYBPAHABAB

Tax Advisory & Compliance

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Accounting, Audit & Tax Services

SECONDARYBPAHABAI

Transfer Pricing & International Tax Services

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Accounting, Audit & Tax Services

SECONDARYFSAEAKAE

Trust & Estate Tax Planning & Compliance

Financial & Insurance/Financial Advisory, Brokerage & Intermediation/Fiduciary, Trust & Estate Advisory

SECONDARYBPAHAAAG

Tax Law

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Legal Services

Keywords

• Tax advisory services
• Inheritance tax planning
• Corporate accounting
• International tax consulting
• Business succession planning

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices14 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Revenue model

1. Tax Advisory and Consulting Services: Ongoing tax advisory services for corporate and individual clients, including tax return preparation, tax consultation, and compliance services
2. Inheritance Tax Services: Inheritance tax filing and planning services, including estate planning, trust formation, and succession consulting
3. Professional Seminars and Education: Fee-based professional seminars for tax practitioners and business clients, including book materials

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Tsuji Hongo Tax Corporation is a professional tax and accounting advisory firm providing comprehensive services including corporate tax advisory, inheritance/estate tax filing, international tax consulting, transfer pricing, business succession planning, and corporate reorganization consulting. The firm also offers HR/labor consulting, bookkeeping outsourcing, audit support via a specialized Review Department, and group-company services spanning legal, M&A, IT consulting, and asset management through affiliated entities.

Product overview

Tsuji Hongo Tax is a comprehensive tax and accounting advisory firm offering a multi-service portfolio centered around core tax advisory services. The firm operates 84 offices nationwide with over 20,164 corporate clients and 2,340 employees. The main offerings include corporate tax advisory, inheritance/estate tax services (via the dedicated Inheritance Center sub-brand with 6,072 annual filings), international tax consulting, succession planning, and corporate reorganization services. Supporting services include HR consulting, bookkeeping outsourcing (via Keiri Takuhaibin brand), electronic records compliance, and environmental sustainability advisory. A specialized 'Review Room' team of 50+ tax professionals provides complex problem resolution and audit support.

Differentiator

Problem solved

Functional benefit

Brands

• 辻・本郷 相続センター: A dedicated division specializing in inheritance tax filing and related services, handling approximately 6,072 cases annually.
• 辻・本郷 会社設立センター
• 辻・本郷 グループ

Products and services

• Corporate Tax Advisory Service (法人税務顧問サービス) Comprehensive tax advisory services for corporations covering day-to-day tax consultation, filing support, and strategic tax planning. For corporate clients of all sizes.
• Tsuji Hongo Inheritance Center (辻・本郷 相続センター) Specialized inheritance and estate tax services including inheritance tax filing, gift tax, estate planning, and international inheritance. Handles approximately 6,072 filings annually with 430 specialized staff. For high-net-worth individuals and families.
• International Tax Consulting (国際税務コンサルティング) Tax advisory services for cross-border transactions, international business operations, and foreign-related tax matters. For corporate clients with international operations.
• Transfer Pricing Consulting (移転価格コンサルティング) Advisory services for intercompany transfer pricing, documentation, and compliance with transfer pricing regulations. For multinational corporate clients.
• Business Succession Consulting (事業承継コンサルティング) Business succession planning services including stock transfer strategies, tax implications, and implementation support for smooth ownership transitions. For corporate owners planning business succession.
• Corporate Reorganization Consulting (組織再編コンサルティング) Advisory services for corporate restructuring, mergers, spin-offs, and other organizational changes with tax optimization strategies. For corporate clients undertaking reorganizations.
• Tax Second Opinion (税務セカンドオピニオン) Expert review and second opinion services for existing tax strategies, audit concerns, or complex tax situations. For corporate clients seeking validation of tax positions.
• HR and Labor Consulting (人事・労務コンサルティング) Human resources and labor-related consulting services including HR strategy, compliance, and workforce management. For corporate clients requiring HR expertise.
• Bookkeeping Delivery Service (経理宅配便®) Outsourcing service for bookkeeping and accounting tasks designed for small businesses, offering convenient document pickup and processing. For small business clients.
• Medical Corporation Accounting and Tax Support (医療法人向け会計・税務サポート) Specialized accounting and tax advisory services for medical corporations, clinics, and healthcare institutions. Includes clinic establishment support, certified medical corporation support, and medical business succession services. For healthcare sector clients.
• Public Interest Corporation Tax Advisory (公益法人・一般法人税務顧問) Tax advisory and consulting services for public interest corporations, general incorporated associations, social welfare corporations, and local public entities. For non-profit and public sector clients.
• Company Formation Support (会社設立サポート) Support for company formation and incorporation, providing guidance through the process of establishing a legal entity. For individual entrepreneurs and small business founders.
• Review Department / Audit Support (審理室) Specialist team of 50+ tax professionals including former National Tax Agency officials providing complex tax problem resolution, audit support, and tax filing review services. For clients with complex or contested tax matters.

Quantifiable outcome

• Industry-top inheritance tax filing volume: 6,072 cases annually
• +1 more outcomes

Named customers3 records

Segments4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• 辻・本郷 ビジネスコンサルティング株式会社 (Tsuji Hongo Business Consulting)coreStrategic or Co-development Partner · 1 April 2002Core group company providing business consulting services. Part of comprehensive service ecosystem offering tax, legal, HR, and consulting services.
• 辻・本郷 FAS株式会社 (Tsuji Hongo FAS)coreStrategic or Co-development PartnerFinancial advisory services subsidiary specializing in M&A and corporate restructuring advisory
• SBI 辻・本郷M&A株式会社 (SBI Tsuji Hongo M&A)coreStrategic or Co-development PartnerJoint venture with SBI Holdings for M&A services, combining tax expertise with financial institution distribution
• TH弁護士法人 (TH Law Firm)coreStrategic or Co-development PartnerIn-house law firm providing legal services complementing tax and consulting offerings
• 辻・本郷 社会保険労務士法人 (Tsuji Hongo Social Insurance Labor Officer)coreStrategic or Co-development PartnerHR and labor law services complementing tax and business consulting services
• 辻・本郷 インシュアランス株式会社 (Tsuji Hongo Insurance)minorStrategic or Co-development PartnerInsurance services subsidiary within the group ecosystem
• 辻・本郷 ITコンサルティング株式会社 (Tsuji Hongo IT Consulting)coreTechnology or IntegrationIT consulting services including DX support, co-hosting seminars on receipt invoice SaaS solutions (LayerX, InfoMart, TOKIUM, Sansan)
• 辻・本郷 監査法人 (Tsuji Hongo Audit Corporation)coreStrategic or Co-development PartnerAudit services subsidiary providing integrated audit and tax services
• LayerX, InfoMart, TOKIUM, and Sansan (Receipt Invoice SaaS vendors)minorGTM or Marketing PartnerReceipt invoice SaaS vendors featured in comparison seminar to help clients select optimal digitalization solution for invoicing processes

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Deloitte Tohmatsu Tax Corporation: Japanese tax services arm of the Big 4 firm Deloitte. Direct competitor in corporate tax, international tax, and transfer pricing advisory for mid-market and large enterprises in Japan.
• EY Tax Japan (EY税理士法人): Japanese tax practice of EY. Competes head-to-head with Tsuji Hongo for corporate tax advisory, transfer pricing, and cross-border engagements with Japanese companies.
• PwC Tax Japan (PwC税理士法人): Tax practice of PwC in Japan. Direct competitor across corporate tax compliance, international tax, and M&A tax due diligence.
• KPMG Tax Japan: KPMG's Japanese tax advisory practice. Competes for global mobility, transfer pricing, and corporate tax engagements with Japanese multinationals.

Emerging players

• TKC Corporation: Listed Japanese provider of accounting firm software and tax compliance platforms. Competes indirectly through technology infrastructure used by tax firms and corporate accounting departments in Japan.
• freee K.K. Leading Japanese cloud accounting SaaS provider for SMBs. Represents a structural threat to Tsuji Hongo's entry-level bookkeeping and tax filing engagements as customers self-serve via software.
• Money Forward, Inc. Cloud accounting and HR/payroll SaaS provider in Japan. Competes for the same SME client base by automating bookkeeping, tax filings, and payroll — areas adjacent to Tsuji Hongo's offerings.

Broad incumbents

• BDO Japan: Mid-tier global accounting network in Japan. Competes with Tsuji Hongo for SME and mid-market corporate tax, audit, and advisory work.
• Grant Thornton Japan: International audit and advisory network's Japan practice. Overlaps with Tsuji Hongo in corporate tax, cross-border M&A advisory, and mid-market engagements.
• Baker Tilly Japan: Global advisory network's Japanese member firm. Competes in mid-market tax, accounting, and consulting — overlapping with Tsuji Hongo's corporate client segment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/HT_TAX
• YouTubeyoutube.com/channel/UC2otUPTGjrLSPaz2mPua91g
• Facebookfacebook.com/HTTAX

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries18 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Tsuji Hongo Tax