Ernst & Young Business Partner Co., Ltd.

Comprehensive services provided by a professional service firm
Areas of focus Tax Tax compliance
Office Tokyo, JP

We strive to provide our clients with the timely, quality services they need to overcome the ever-changing need for adaptation in rapidly changing business environments.

We are building a better working world

The insights and quality services we deliver help build trust and confidence in the capital markets and in economies the world over. We develop outstanding leaders who team to deliver on our promises to all of our stakeholders. In so doing, we play a critical role in building a better working world for our people, for our clients and for our communities.

Company Profile


Ernst & Young Business Partner Co., Ltd.

*We have moved into a new office

Hibiya Mitsui Tower, Tokyo Midtown Hibiya
1-1-2 Yurakucho, Chiyoda Ward, Tokyo


Representative director Kenji Kasahara
  • Real Estate Brokerage
    License No.: Tokyo Governor (2) #78954
  • Worker Dispatching Undertakings
    Permit No.: Dispatch 13-314803

Major services

One-stop Accounting, Taxes, and Payroll services for foreign companies
Ranging from startups without dedicated staff to handle accounting, tax and payroll processing , to medium-sized MNEs desiring to focus on core business activities by outsourcing back office operations, we at EY are able to customize our services to your needs - whether it be for a single service (e.g. payroll calculations) or a combination of services (e.g. accounting and tax return preparations).
Accounting compliance and reporting
We can assist as you navigate local reporting during a finance transformation or during periods of significant growth. We work with you to efficiently prepare both local and consolidated financial statements, reduce year-end disruption and facilitate a smoother audit.
Payroll Operate
Our professionals can help you streamline global payroll operations and reduce compliance risk, supporting you to meet payroll needs today and tomorrow. We provide managed payroll services to companies from small start-ups to large multinationals, no matter the industry or location.
Tax compliance
Complying with tax laws and regulations that are constantly changing is a challenge. We can help from tax filing to tax planning. 
Professional staff service: tax, accounting and payroll
The Professional staff service offered by Ernst & Young Business Partner Co., Ltd. meets client needs for tax management function support and accounting and payroll compliance services by dispatching insightful, experienced professionals with expertise in tax, accounting and payroll to their organizations.
Fixed asset valuation support

Ensuring that fixed asset valuation calculations are accurate is no small task. Our firm conducts valuations using methods indistinguishable from those  used by government authorities, providing clients with support that reduces the risk of inflated fixed asset valuations. We conduct valuations of newly built and pre-existing buildings, including those used as office buildings and commercial facilities.

Fixed asset valuation support service (PDF 1.4MB)

Corporate real estate (CRE) strategy formulation and advisory

CRE strategy: Real estate strategies founded on the managerial principle of maximizing corporate value by leveraging corporate real estateExperienced staff from EYBP and other EY group firms specializing in real estate, construction, accounting and tax provide clients with the CRE strategy services they need, including advice regarding potential reductions in real estate costs, investment strategies, risk control or accounting for asset impairment.

CRE strategy: Real estate strategies founded on the managerial principle of maximizing corporate value by leveraging corporate real estate

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