Tax accountant corporation Yamada & Partners

What Tax accountant corporation Yamada & Partners does

Tax accountant corporation Yamada & Partners (税理士法人山田&パートナーズ) is a Japan-based comprehensive professional services firm founded in 1981, providing tax advisory, accounting, M&A consulting, inheritance planning, and international tax services. The firm is headquartered in Tokyo and operates through a network of over 30 offices, comprising 20+ locations across all major Japanese economic regions (Hokkaido, Tohoku, Kanto, Tokai, Kansai, Hokushinetsu, Chugoku-Shikoku, Kyushu) and 12 overseas offices spanning Singapore, Malaysia, China (Shanghai and Guangzhou), Vietnam (Hanoi and Ho Chi Minh), the United States (Los Angeles, New York, Honolulu), India (Gurugram), and Taiwan (Taipei). It employs 501-1,000 professionals and operates as a private 税理士法人 (tax accountant corporation) under Japanese law.

The firm's service portfolio is organized across five primary customer segments: individual clients (inheritance consulting, inheritance tax filing, real estate consulting, family/shareholder transfer, business succession, international inheritance, family governance), corporate clients (M&A consulting, corporate reorganization, capital policy, tax advisory, fraud investigation, equipment investment tax, electronic book preservation compliance), international/expatriate clients (cross-border M&A, transfer pricing, overseas CFO services, exit tax, tax haven countermeasures, overseas subsidiary investigation), medical institutions (medical corporation establishment, succession, certification, M&A), and public interest/nonprofit organizations (incorporated foundation establishment, public interest certification, Article 40 application support). Additional service lines include decarbonization advisory (脱炭素化対応支援) and capital investment consulting. The group operates alongside affiliated entities Yamada & Partners Accounting (山田&PARTNERS会計) and Yamada & Partners Law (山田&PARTNERS総合法律事務所), enabling integrated tax-accounting-legal delivery.

The business model is a traditional professional services fee structure: engagement-based pricing determined by scope and complexity, with services delivered through direct advisor consultation. Go-to-market is sales-led, supported by content marketing (tax reform commentary, overseas desk reports, publications), online seminars (Reiwa 8 tax reform, lease accounting, Australia expansion), SEO-optimized website content, and newsletter registration. Revenue is not publicly disclosed. Recent operational moves include a Tokyo headquarters relocation announced May 8, 2026, accompanied by organizational restructuring, and a co-sponsorship partnership with Fukuoka Stock Exchange on lease accounting seminars targeting listed and pre-IPO clients.

Name

Tax accountant corporation Yamada & Partners

Legal name

税理士法人山田&パートナーズ

Website

https://yamada-partners.gr.jp

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Tax accountant corporation Yamada & Partners is a Tokyo-based, Japan-founded (1981) tax, accounting, M&A, and international tax advisory firm with 501-1,000 employees, operating from over 30 offices across Japan and 12 overseas locations, serving individuals, corporations, medical institutions, and nonprofits.

Ownership category

akta.pro rank

Product category

Tax Accounting & Advisory Services

NAICS

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

akta.pro primary industry

Financial Reporting & Technical Accounting Advisory (GAAP/IFRS) (BPAHABAF)

akta.pro secondary industries

Tax-Aware Retirement & Estate Coordination (FSAEABAJ), Tax-Aware Investment Planning (FSAEAAAE)

Keywords

• Tax accounting services
• Inheritance consulting
• M&A advisory
• International tax compliance
• Business succession planning

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices31 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Professional Services Fees: Revenue generated from providing tax advisory, tax filing, M&A consulting, inheritance planning, international tax services, and various consulting engagements to individual and corporate clients. Services include tax顾问 (tax advisory), 相続コンサルティング (inheritance consulting), M&Aコンサルティング (M&A consulting), and specialized services for medical corporations and public interest organizations.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Tax accountant corporation Yamada & Partners is a Japanese professional tax accounting and consulting firm that delivers a unified suite of advisory services to individual and corporate clients. Offerings span inheritance consulting, estate tax filing, real estate consulting, M&A advisory, corporate reorganization, capital policy consulting, tax advisory, fraud investigation, transfer pricing, overseas CFO services, and specialized practice areas for medical corporations and public interest organizations.

Product overview

Tax accountant corporation Yamada & Partners (税理士法人山田&パートナーズ) is a comprehensive professional firm providing accounting, tax, and financial services. The company offers a unified suite of professional service modules organized across six customer segments: Individual services (inheritance consulting, inheritance tax filing, real estate consulting, family governance), Corporate services (M&A consulting, business succession, tax advisory, electronic bookkeeping compliance), International services (cross-border M&A, transfer pricing, overseas CFO, tax haven countermeasures), Medical institution services (medical corporation establishment, certified medical corporation consulting), Public interest organization services (incorporated foundation support, public interest certification), plus decarbonization support and capital investment consulting. All services are delivered through the firm's network of 20+ domestic offices across Japan and 11 overseas offices spanning Singapore, Malaysia, China (Shanghai, Guangzhou), Vietnam (Hanoi, Ho Chi Minh), USA (Los Angeles, New York, Honolulu), India (Gurugram), and Taiwan (Taipei).

Differentiator

Problem solved

Functional benefit

Products and services

• Individual Tax Services (個人向け税務サービス)

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Three partnerships are on record, tiered minor and core.

• Fukuoka Stock ExchangeminorGTM or Marketing PartnerFukuoka Stock Exchange co-sponsors Yamada & Partners seminars, specifically the 新リース会計セミナー (New Lease Accounting Seminar) focused on corporate value enhancement. This partnership positions the firm as a knowledgeable advisor on accounting and tax matters relevant to listed companies and those seeking capital markets access.
• Yamada & Partners Accounting (山田&PARTNERS会計)coreOthersRelated group company (yp-accounting.co.jp) providing integrated professional services within the Yamada & Partners network. Operates as part of the same professional services ecosystem offering accounting and bookkeeping services.
• Yamada & Partners Law (山田&PARTNERS総合法務事務所)coreOthersRelated group company (yp-law.or.jp) providing integrated legal services within the Yamada & Partners network. Operates as part of the same professional services ecosystem offering legal advisory services.

Scale indicators2 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Grant Thornton Japan: Japanese member of Grant Thornton; offers tax advisory, M&A, and cross-border services to similar client segments, making it a comparable mid-market professional services peer.
• BDO Japan: Mid-tier global accounting network with Japanese tax and advisory practice; competes for similar cross-border tax and business succession mandates.
• TKC Corporation: Major Japanese accounting/tax firm and software provider; offers tax filing, advisory, and digital tools that directly compete with Yamada & Partners' professional services offering to SMEs and HNW clients.
• PwC Japan Tax: Japanese tax practice of PwC; competes directly with Yamada & Partners on cross-border tax, M&A tax, transfer pricing, and international inheritance services for Japanese corporates and HNW clients.
• TAX Anzenkyoku (former ASKA): Major Japanese tax accountant firm providing national tax filing, advisory, and inheritance services with nationwide presence; comparable scale and service breadth to Yamada & Partners.
• Deloitte Tohmatsu Tax: Deloitte's tax practice in Japan competes on global employer services, transfer pricing, and cross-border M&A tax; similar footprint and client mix to Yamada & Partners.
• EY Japan Tax: EY's Japanese tax practice addresses international tax, M&A, and expatriate taxation for Japanese corporates and HNWs, directly competing with Yamada & Partners' international desk.
• Baker Tilly Japan: Baker Tilly's Japanese tax/accounting practice serves SMEs and HNW clients with cross-border services; competes directly with Yamada & Partners in the domestic mid-market.
• KPMG Japan Tax: KPMG's Japanese tax practice offers comparable international tax, inbound/outbound advisory, and M&A tax services, directly competing for the same cross-border mandate pool.
• RSM Japan: Japanese arm of the RSM network providing tax and advisory services; directly comparable mid-tier firm competing for cross-border and SME mandates.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/grantthorntonyamadaandpartners

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Tax accountant corporation Yamada & Partners