JAPANESE CPA / GINZA, TOKYO
When your finance team needs more than advice.
Lease accounting implementation, closing and consolidation, and financial information verification. A CPA with audit and consulting experience designs the work and manages quality, while specialist staff help carry it through.
Discuss your needs ↗ Find your starting point ↓You can contact us before deciding the precise scope.
JAPAN’S NEW LEASE ACCOUNTING STANDARD
Prepare for
1 April 2027.
ASBJ Accounting Standard No. 34 applies to annual and consolidated annual periods beginning on or after this date. For a March year-end, this means the year starting in April 2027.
From collecting scattered contracts to AI-assisted initial assessment, CPA review and continuing lease administration.
Explore implementation support ↗START WITH YOUR CHALLENGE
What is holding your team back?
Too many contracts to investigate?
Collection plans, AI-assisted extraction and initial assessment, CPA review and lease register preparation — followed by monthly or annual administration.
Explore the service ↗Not enough staff for closing or consolidation?
Entrust the whole process or selected calculations, adjustments and reporting schedules, including recurring support when staff leave or workloads peak.
Explore the service ↗Need CPA procedures for a staffing licence renewal?
Agree the required procedures over interim or monthly accounts after confirming the Labour Bureau’s requirements and deadline.
Explore the service ↗LEASE ACCOUNTING
From contracts to closing
- Scope the investigationLedgers, site questions and priorities
- Collect and extractAI-assisted contract reading and initial assessment
- Review significant issuesCPA checks against source records
- Prepare for reportingRegister, calculations and operating rules
Illustrative workflow. The scope and deliverables are agreed for each engagement.
Contract analysis uses settings that exclude client documents from AI model training. We agree the documents and purpose before using AI.
Lease implementation support ↗Keep the work running after adoption.
New and changed contracts, register updates, monthly right-of-use asset and liability calculations, and closing and disclosure schedules can be entrusted as recurring work.
Recurring lease administration ↗WHY OUR OFFICE
CPA expertise, with a team that does the work.
Records that help discussions with auditors
Our representative spent 12 years in audit and consulting at an audit firm. We prepare supporting records with the questions auditors ask in mind.
Practical execution as well as advice
A CPA and specialist staff undertake agreed calculations, preparation and contract investigation when your team needs capacity.
Technology for efficiency; professional oversight
AI and systems assist reading and reconciliation. CPAs consider significant accounting issues, design the work and manage quality.
FEES
Indicative lease support fees
Implementation
From JPY 800,000Approximately 20 mainly standard contracts.
Monthly administration
From JPY 30,000 / monthUp to 20 total contracts in the register.
Annual-only administration
From JPY 150,000 / yearUp to 20 total contracts in the register.
Excludes tax. Assessment of new or changed contracts is charged separately. Other conditions and the formal scope apply.
Full fee guide and conditions ↗OUR REPRESENTATIVE
Manabu Ichiyama

CERTIFIED PUBLIC ACCOUNTANT (JAPAN)
Audit experience followed by consulting in accounting, business processes and systems. Work includes standalone and consolidation systems, management and cost accounting, internal controls and IFRS implementation.
Established ICHIYAMA ACCOUNTING OFFICE in 2019; co-founder and Representative Director of 株式会社CP ARCS. Expected representative of CP ARCS はじめ監査法人, planned for establishment in 2026.
Career, experience & office details ↗FIVE SERVICE AREAS
Choose by the support you need.

Accounting & reporting outsourcing
Recurring support for closing, consolidation, management reporting and lease administration. Choose the work your team needs, with specialist staff carrying out the agreed tasks and a Japanese certified public accountant overseeing quality.

Financial information verification
Choose the engagement around the information you need to verify, its intended users and their requirements: agreed-upon procedures for applications or contractual settlements, or a financial statement review.

Accounting, operations & systems advisory
Connect accounting policies, management information, business processes and systems. We help turn the design into procedures that your team can use, with ongoing advice or recurring operational support where agreed.

Financial statement audit
Statutory and voluntary financial statement audits, and component audits for Japanese subsidiaries of overseas groups. We begin by understanding the business and explain the preparation and significant issues clearly.

Transaction & other accounting services
Financial due diligence and valuation for acquisitions and investments, and accounting and administrative infrastructure for IPO preparation. The purpose and required deliverables determine the scope.
INSIGHTS
Practical insights
Explanatory articles are currently in Japanese. The English insights page explains where to find them.
View the article information ↗GETTING STARTED
From conversation to the first work
- Share the challengeWork, current situation and timing
- Review our proposalDeliverables, responsibilities, dates and fees
- Agree and startInitial setup and agreed work
Illustrative workflow. The scope and deliverables are agreed for each engagement.
LET’S TALK
Let’s work out your next step.
You do not need a finalized brief. Start with the challenge or the work you would like to entrust.
