Complete Guide to Accounting Outsourcing for Foreign-Owned Companies in Japan: Scope, Provider Selection, and Implementation

Foreign-owned companies operating in Japan may face challenges such as not having enough accounting work to justify hiring multiple accounting staff, or difficulty finding professionals who understand Japanese accounting and tax practices while also being able to communicate with global headquarters in English.

In addition to maintaining the books and addressing tax requirements in Japan, Japanese subsidiaries may also be required to comply with global headquarters’ closing schedules, chart of accounts, ERP systems, IFRS, US GAAP, and other group reporting requirements.

The need for overseas subsidiaries to comply with local accounting and tax rules is not unique to Japan. However, accounting operations in Japan must appropriately reflect local requirements relating to consumption tax, withholding income tax, document retention, fixed asset management, and other matters in day-to-day accounting processes.

One effective option in such situations is accounting outsourcing designed for foreign-owned companies.

This article explains which accounting functions can be outsourced in Japan, the benefits and key considerations, how to select an outsourcing provider, and the typical implementation process.

What Is Accounting Outsourcing for Foreign-Owned Companies?

Accounting outsourcing means engaging an external professional service provider to handle some or all of a company’s accounting operations.

A company may outsource only bookkeeping, or it may delegate a broader range of functions, including invoice processing, accounts receivable and accounts payable management, expense reimbursement, monthly closing, preparation of payment data, and reporting to global headquarters.

For foreign-owned companies, simply being able to “handle Japanese accounting” may not be sufficient. It is important to have a framework that can properly maintain the Japanese entity’s books while also reporting financial information in the formats and according to the schedules required by global headquarters.

In addition, preparing the books of a Japanese entity may require tax-related reviews beyond basic accounting treatment, such as determining the appropriate consumption tax classification or whether withholding tax applies to a particular transaction.

For this reason, it is also important to have a structure in which accounting personnel and tax professionals can coordinate appropriately when necessary.

How Accounting for Foreign-Owned Companies Differs from That of Typical Domestic Companies

Foreign-owned companies may need to address both the requirements applicable to the Japanese entity and those of global headquarters or the wider corporate group.

The key point is not that Japanese accounting practices are fundamentally different from those overseas.

The practical challenge is how to connect the group accounting requirements of global headquarters with the local accounting and tax requirements of the Japanese entity, and how to incorporate both into day-to-day accounting operations.

Therefore, when selecting an outsourcing provider, foreign-owned companies should evaluate not only bookkeeping capability but also the provider’s ability to bridge Japanese requirements and global headquarters’ expectations.

Main Accounting Functions That Foreign-Owned Companies Can Outsource

The scope of services that can be outsourced varies by company and service provider. In general, the following functions may be outsourced.

Here, “can be outsourced” means that operational work may be delegated to an external provider. It does not mean that management decisions, final payment approvals, or the company’s legal and managerial responsibilities can be transferred externally.

For fixed assets, accounting depreciation and tax depreciation do not necessarily coincide.

In Japan, certain depreciable assets used for business purposes must generally be reported annually to the relevant municipality based on ownership as of January 1.

For companies with many assets or multiple locations, it is therefore important to continuously manage not only acquisition cost and useful life, but also asset location, transfers, disposals, and retirements.

You Do Not Need to Outsource Everything

Accounting outsourcing does not necessarily mean replacing the entire accounting function with an external provider.

For example, a company may choose to:

• Outsource only AP and bookkeeping
• Outsource monthly closing and reporting to global headquarters
• Outsource most accounting functions immediately after entering Japan, then bring selected functions in-house as the business expands
• Have bookkeeping performed by an overseas Shared Service Center (SSC) and reviewed in Japan

For foreign-owned companies, it is important at the implementation stage to clearly define which responsibilities belong to the Japanese entity, global headquarters or SSC, and the outsourcing provider.

Why Accounting Outsourcing Can Be Effective for Foreign-Owned Companies

It Can Be Difficult to Hire People with Both Japanese Accounting Expertise and English Skills

Accounting personnel at foreign-owned companies may need not only practical knowledge of Japanese accounting and tax rules, but also the ability to communicate in English with overseas Finance Teams.

If knowledge of group ERP systems, Reporting Packages, and Intercompany Transactions is also required, the skill set becomes even broader.

In addition, if operations depend heavily on a single individual, that person’s resignation or extended absence may disrupt monthly closing or reporting to headquarters.

Using outsourcing to build a team-based and standardized operating model can help reduce this key-person dependency risk.

Japanese Requirements Must Be Reflected in Day-to-Day Accounting

The need for an overseas subsidiary to comply with the tax and accounting rules of its host country is not unique to Japan.

However, accounting for a Japanese entity requires more than simply recording transactions under the appropriate accounts. Day-to-day processes must also reflect information necessary for Japanese consumption tax, withholding income tax, document retention, and other local requirements.

For example, Japanese companies have statutory obligations to retain accounting books and transaction-related documents, and the required retention period may vary depending on the type of document and the circumstances of the fiscal year.

In addition, invoice and receipt data exchanged electronically through email, web services, and other digital channels must be retained in accordance with the electronic transaction data requirements under Japan’s Electronic Books Preservation Act.

Under Japan’s Qualified Invoice System for consumption tax, a company generally needs to retain books and qualified invoices meeting specified requirements in order to claim input tax credits. Depending on the transaction, however, exceptions or transitional measures may apply.

Foreign-owned companies also frequently conduct transactions with overseas businesses. For Japanese consumption tax purposes, they may therefore need to determine whether a transaction is treated as a domestic transaction and whether certain services received from overseas providers are subject to the reverse charge mechanism.

Accordingly, simply mapping the chart of accounts used by global headquarters to a Japanese accounting system is not enough.

It is important to incorporate the tax classifications and supporting documentation required in Japan into daily processes such as invoice processing and expense reimbursement.

Cross-Border Transactions May Require Tax Analysis

Foreign-owned companies may make payments to overseas parent companies or group companies for royalties, interest, service fees, and other items.

Depending on the nature of the payment, withholding tax may be required in Japan for payments made to non-residents or foreign corporations.

Tax treaties may also reduce the tax rate imposed under Japanese domestic law or provide an exemption in certain cases. Prescribed filings or other procedures may be required in order to apply treaty-based reductions or exemptions.

In practice, companies should therefore avoid a process in which payment is made automatically simply because an invoice has been approved. Instead, it is important to establish a process for identifying transactions that require tax review before payment and, where necessary, consulting a tax professional.

Reviews relating to consumption tax and withholding income tax may be required not only when preparing tax returns, but also at the bookkeeping and payment-processing stages.

Accordingly, companies should establish a mechanism that allows accounting personnel to consult tax professionals at the appropriate time when a transaction requires tax analysis.

Benefits of Accounting Outsourcing

Reducing Recruitment and Turnover Risk

When a Japanese entity is still relatively small, there may not be enough work to justify hiring multiple accounting employees.

At the same time, hiring only one person can result in accounting responsibilities and knowledge becoming concentrated in that individual.

Outsourcing makes it easier to create a structure that matches the required workload and can reduce the risk of accounting operations stopping when a particular employee resigns or takes extended leave.

Keeping Fixed Costs Lower in the Japanese Entity

A newly established business does not necessarily need to hire a Finance Manager, Accountant, AP specialist, and all other finance personnel internally from the outset.

Routine work can be outsourced, while internal resources focus on activities closer to management, such as budgeting, business analysis, coordination with global headquarters, and decision-making.

Standardizing Accounting Processes

Implementing accounting outsourcing requires the company to organize its workflows from invoice receipt and approval through bookkeeping, payment, and monthly closing.

As a result, processes that previously depended on the experience or judgment of specific employees can be formalized by clearly defining responsible parties, deadlines, approvers, and required documentation.

Key Considerations for Accounting Outsourcing

Accounting outsourcing offers many benefits, but insufficient process design can create new operational issues.

The following points require particular attention.

Clearly Define the Scope of Work

A request such as “Please handle all of our accounting” can easily lead to mismatched expectations after services begin.

Even invoice processing may involve multiple steps:

Receipt → Review → Internal Approval → Accounting Entry → Preparation of Payment Data → Final Bank Approval

The company should clearly define which steps are handled by the Japanese entity, global headquarters, and the outsourcing provider.

Do Not Fully Outsource Final Payment Approval

Even if payment operations are outsourced, internal controls should be maintained by separating preparation of payment data from final approval.

For example, the outsourcing provider may prepare payment data, while an authorized individual at the Japanese entity or global headquarters provides final approval.

When the approver is located overseas, the company should clarify in advance the approval authority of the Japan and headquarters teams, cut-off times, and access methods for banking systems.

Distinguish Accounting Services from Tax Services

Accounting services such as bookkeeping should be distinguished from professional tax services.

In Japan, certain services, including tax representation, preparation of tax documents, and tax consultation, are legally reserved for licensed tax accountants and tax accountant corporations under the Certified Public Tax Accountant Act.

At the same time, day-to-day accounting and taxation are closely connected.

For example, tax-related review may be required during routine accounting for matters such as consumption tax classification when posting journal entries, withholding tax on overseas payments, or the tax treatment of specific expenses.

Therefore, even when outsourcing only accounting functions, it is important to have a structure that allows appropriate tax professionals, such as licensed tax accountants or tax accountant corporations, to be consulted when tax analysis becomes necessary.

When using accounting outsourcing, companies should also confirm whether the division of responsibilities between accounting personnel and tax professionals is clear and whether the outcome of tax reviews can be properly reflected in day-to-day accounting operations.

Seven Points to Consider When Selecting an Accounting Outsourcing Provider

1. Does the Provider Understand Accounting Operations for Foreign-Owned Companies?

Confirm whether the provider understands areas commonly encountered by foreign-owned companies, such as reporting to global headquarters, Intercompany Transactions, foreign-currency transactions, and closing schedules coordinated with overseas headquarters.

2. Can the Provider Communicate Effectively in English?

The key is not simply whether the provider can send emails in English.

The provider should be able to explain in English why accounting figures differ, as well as Japan-specific accounting and tax treatments, when questions are raised by global headquarters.

3. Can the Provider Support the Headquarters Reporting Package?

Confirm whether the provider can go beyond preparing a Japanese trial balance and also handle Mapping to the group’s chart of accounts and formats, as well as preparation of monthly reports.

Where group accounting treatment differs from the accounting or tax treatment required for the Japanese entity, the provider should also be able to continuously identify and manage those differences.

4. Can the Provider Work with Your ERP and Accounting Systems?

Foreign-owned companies sometimes use an ERP specified by global headquarters for the Japanese entity as well.

Before implementation, confirm whether the provider can work within the current system without changes, whether data integration or additional configuration will be required, and how access permissions will be managed.

5. Is There a Framework for Coordination with Tax Professionals?

Accounting data is ultimately used for corporate income tax, consumption tax, and other tax filings.

However, coordination with tax professionals may be required well before year-end closing and tax return preparation. Tax-related review may arise during day-to-day accounting for consumption tax classification, cross-border transactions, withholding income tax, fixed assets, and other matters.

If bookkeeping personnel and tax professionals operate in complete isolation, significant additional explanations and documentation may be required at year-end.

Companies should therefore confirm whether there is a framework under which tax issues can be appropriately referred to licensed tax accountants or tax accountant corporations and their conclusions reflected in day-to-day accounting.

6. Are Internal Controls and Information Management Clearly Defined?

Accounting functions handle highly confidential information, including invoices, vendor data, payroll-related information, and banking information.

Companies should confirm what rules are in place regarding system access permissions, approval workflows, methods of data exchange, and access management when responsible personnel change.

7. Can Operations Continue Through a System Rather Than Depending on One Individual?

If only one person at the outsourcing provider understands the company’s operations, key-person risk remains even after outsourcing.

Confirm whether the provider has mechanisms to ensure business continuity, including operating manuals, review procedures, backup personnel, and structured handover processes when account managers change.

Typical Accounting Outsourcing Implementation Process

Accounting outsourcing is generally implemented through the following steps.

1. Review Current Operations

Organize information on current tasks, transaction volumes, systems in use, monthly and annual closing schedules, and reporting requirements from global headquarters.

2. Determine the Outsourcing Scope

Define the responsibilities of the Japanese entity, global headquarters or SSC, and the outsourcing provider.

3. Design Workflows and Approval Authority

Clearly define who enters data, who reviews it, and who provides final approval.

4. Transfer Data and Documentation

Hand over the data and documents required for operations, including the chart of accounts, vendor information, fixed assets, accounts receivable and payable, banking information, and previous Reporting Packages.

5. Run Parallel Operations and Testing

Test actual monthly closing and reporting to global headquarters, and identify differences in understanding, missing documentation, or system-related issues.

6. Go Live and Conduct Periodic Reviews

Even after going live, periodically review the outsourcing scope and workflows in response to business growth, higher transaction volumes, system changes, and revised requirements from headquarters.

One of the most important points is not to transfer the work immediately without preparation. Before the first monthly close under the new structure, responsibilities, required documentation, approval workflows, and the closing schedule should be documented clearly.

Common Accounting Outsourcing Mistakes Among Foreign-Owned Companies

Communicating Global Headquarters’ Requirements Too Late

If the Japanese bookkeeping process is designed first and global headquarters later requests a different chart of accounts, Cost Centers, or closing schedule, additional manual work may be required every month.

At the implementation stage, it is important to share the Reporting Package, Chart of Accounts, Cost Centers, closing schedule, and other requirements used by global headquarters.

Insufficient Handover from the Current Accounting Team

Accounting operations often include exception handling that cannot be understood from contracts or manuals alone.

Operational rules such as “this Vendor has different payment terms” or “this expense must use a specific Cost Center required by headquarters” should also be documented during the handover.

If outsourcing is being introduced because an existing accounting employee is leaving, sufficient handover time should be secured before that employee’s departure date.

Selecting a Provider Based Only on the Lowest Price

If providers are compared only by the number of bookkeeping entries or monthly fees, services such as English-language support, headquarters reporting, coordination with tax professionals, and review procedures may be charged separately.

As a result, the company’s internal management burden may actually increase.

Rather than focusing only on price, companies should evaluate whether the provider can support the entire process through to the final output the company actually requires.

Frequently Asked Questions About Accounting Outsourcing for Foreign-Owned Companies

Can All Accounting Functions Be Outsourced?

Many operational accounting tasks can be outsourced, including bookkeeping, AP and AR, expense reimbursement, monthly closing, and reporting to headquarters.

However, final payment approval and management decisions should generally remain within the company. It is important to clearly distinguish the authority and responsibilities that remain in-house from the operational work delegated externally.

Can a Newly Established Japanese Entity Use Accounting Outsourcing?

Yes.

Immediately after entering the Japanese market, transaction volumes may be low and there may be little need to hire a full-time accounting employee.

One option is to outsource most accounting functions during the early stage of operations and bring selected functions in-house later as the business and transaction volume grow.

Can Communication with Global Headquarters Also Be Outsourced?

The scope varies by provider.

For foreign-owned companies, it is useful to confirm in advance whether the provider can handle not only English-language monthly reporting, but also inquiries from the overseas Finance Team, preparation of Reporting Packages, and explanations of differences in accounts or financial figures.

When Is the Right Time to Consider Outsourcing?

Common trigger points include entering the Japanese market, the resignation or extended absence of accounting personnel, an increase in transaction volume, or a request from global headquarters to accelerate the monthly close.

It is generally easier to organize operations and conduct an orderly handover if outsourcing is considered before the existing structure becomes difficult to sustain, rather than waiting until problems have already become critical.

Conclusion: Accounting Outsourcing for Foreign-Owned Companies Requires a Framework That Connects Japan and Global Headquarters

When foreign-owned companies use accounting outsourcing in Japan, the decision should not be based solely on whether bookkeeping can be delegated.

A more important consideration is how the accounting and tax requirements of the Japanese entity can be connected with the accounting and reporting requirements of global headquarters.

The outsourcing framework should combine an understanding of Japanese accounting and tax practices with English-language communication, reporting to global headquarters, and the ability to operate within the group’s accounting systems and closing schedule.

In addition, day-to-day accounting for Japanese entities is closely connected with tax matters in areas such as consumption tax classification, withholding income tax on overseas payments, and fixed asset management.

Accordingly, it is also important to establish a framework in which accounting personnel and tax professionals can coordinate appropriately when tax analysis is required, and the resulting conclusions can be reflected in day-to-day accounting processes.

RSM Shiodome Partners supports Japanese entities of foreign-owned companies with a wide range of back-office services required for operating in Japan, including accounting and bookkeeping outsourcing, tax services, HR and labor support, payroll, visas, and licensing-related services.

If your company is considering whether to hire a dedicated accounting employee in Japan, wants to determine which current accounting functions can be outsourced, or would like to outsource English-language reporting to global headquarters as well, a practical first step is to review the current workflow and clarify the respective roles of the Japanese entity, global headquarters, and external service providers before determining the most appropriate outsourcing scope.

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