EY Business Partner Co., Ltd.
EY Business Partner Co., Ltd. provides bookkeeping, accounting and payroll outsourcing services to foreign-affiliated and Japanese clients of all sizes.

Ernst & Young Business Partner Co., Ltd.

Bookkeeping, accounting and payroll outsourcing services provided by a professional service firm
Areas of focus Tax Tax compliance
Office Tokyo, JP

Demand for outsourcing services is growing year after year amidst the backdrop of rapidly changing business environments and chronic labor shortages. We at EY Business Partner Co., Ltd. have assembled a team of experienced professionals specializing in bookkeeping, accounting, payroll and social insurance services in order to provide the highest quality outsourcing services to both foreign and domestic clients across a multitude sectors and industries.

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.

EYビジネスパートナー 株式会社
Location Hibiya Mitsui Tower, Tokyo Midtown Hibiya
1-1-2 Yurakucho, Chiyoda Ward, Tokyo
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Fukuoka branch
Tenjin Bldg., 2-12-1 Tenjin, Chuo-ku, Fukuoka-shi, Fukuoka ,
Fukuoka 810-0001
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Okinawa branch 
150 Aza Asato, Naha, Okinawa
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Representative director Tsuyoshi Okamoto

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 provide comprehensive outsourcing services to foreign and Japanese clients of all sizes, for everything from bookkeeping and preparation of various reporting materials to adjusting for differences and preparing financial statements across accounting standards, and consolidated financial closings.


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. The comprehensive suite of outsourcing services we provide range from payroll calculation and talent-related operations (on-site and off-site) to social insurance and overseas payroll-related processes.

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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