Top 10 Best Accountant / CA in Osaka (Verified & Reviewed Guide)

Introduction

Hiring an Accountant / CA in Osaka is rarely just about “doing the books.” People typically need help staying compliant with Japanese tax and reporting rules, improving cash flow, preparing lender-ready financials, or handling cross-border complexity when trading internationally.

This guide is designed for business owners, startups, and individuals who want a dependable shortlist of reputable options in Osaka—plus practical advice on costs, what to ask, and how to choose the right fit.

We evaluated providers using publicly available signals (such as clearly stated service lines, office presence, and any visible customer feedback where available). Where details like ratings, prices, or review summaries aren’t publicly stated, we mark them transparently.

About Accountant / CA

An Accountant / CA (commonly referring to a Certified Accountant/Chartered Accountant equivalent) supports financial reporting, assurance, advisory, and—depending on credentials—tax and compliance-related work. In Japan, it’s important to understand that different licenses cover different activities.

Many clients in Osaka seek an Accountant / CA for:

• Financial statement preparation and reporting support
• Audit/assurance needs (for certain companies or stakeholder requirements)
• Management reporting (monthly reporting packs, budgeting, forecasting)
• Transaction support (M&A, due diligence, valuation support)
• Cross-border structuring and coordination (often with tax specialists)

When you may need one

You’ll typically benefit from an Accountant / CA when you’re:

• Scaling beyond basic bookkeeping and need decision-grade numbers
• Raising financing, preparing for investment, or reporting to parent companies
• Managing multi-entity or multi-currency operations
• Facing tight deadlines for statutory or stakeholder reporting
• Needing assurance services (where applicable)

Average cost in Osaka

Not publicly stated as a standardized citywide average. Pricing varies significantly by scope (one-off vs ongoing), complexity, language requirements (Japanese/English), and whether work requires licensed professionals vs junior accounting staff.

Licensing or certifications required (if applicable)

In Japan, services can depend on professional registration and the exact work being performed. Common relevant credentials include:

• 公認会計士 (Certified Public Accountant / CPA Japan): generally associated with audit and assurance, plus broader accounting/advisory capabilities
• 税理士 (Certified Tax Accountant): typically associated with tax filings and tax representation services
• 日商簿記 (Nissho Bookkeeping): a bookkeeping qualification often held by accounting staff (not the same as CPA/Tax Accountant licensing)

Key takeaways:

• If you need audit/assurance, ask whether the engagement is handled by appropriately licensed professionals.
• If you need tax filing/representation, confirm whether a 税理士 is involved.
• For SMEs, many “accounting” engagements are a mix of bookkeeping + tax + payroll—clarify the deliverables in writing.
• Bilingual support can affect staffing and fees.

How We Selected the Best Accountant / CA in Osaka

We used a practical, buyer-focused set of selection criteria:

• Years of experience (firm history and/or team background when publicly stated)
• Verified customer review signals (only where publicly visible; otherwise marked as Not publicly stated)
• Service range (audit/assurance, accounting, advisory, and business support breadth)
• Pricing transparency (whether pricing approach is explained publicly; many firms quote after scoping)
• Local reputation (recognizable market presence, clear office listings, and professional positioning)

This guide relies on information that is publicly available from official channels when known. If a detail (phone, email, pricing, or review summary) wasn’t confidently available, it is intentionally listed as “Not publicly stated” rather than guessed.

About Osaka

Osaka is one of Japan’s primary commercial centers, with dense clusters of SMEs, regional headquarters, logistics and trading businesses, and a strong services economy. That combination creates steady demand for accountants who can support compliant operations while improving reporting and decision-making.

In practice, demand is often highest for:

• Monthly management reporting for owner-managed businesses
• Support for subsidiaries and branch offices of non-Osaka companies
• Advisory work related to restructuring, financing, and transactions
• Multilingual support for internationally connected firms

Key neighborhoods served (commonly, depending on provider and client location):

• Kita / Umeda
• Chūō (Honmachi, Yodoyabashi area)
• Namba
• Tennoji
• Shin-Osaka

Any provider’s exact coverage area and on-site availability varies / depends.

Top 5 Best Accountant / CA in Osaka

#1 — Deloitte Tohmatsu

• Rating: Not publicly stated
• Years of Experience: Not publicly stated
• Services Offered: Audit & assurance, accounting advisory, risk advisory, financial advisory, business consulting (service availability varies by engagement and entity)
• Price Range: Varies / depends
• Contact Phone: Not publicly stated
• Contact Email (if available): Not publicly stated
• Website (if available): https://www2.deloitte.com/jp/en.html
• Google Map or ProfessNow or Yelp Link:
• Google Reviews Summary: Not publicly stated
• Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Premium, complex corporate work, multi-entity reporting, cross-border coordination

#2 — PwC Japan

• Rating: Not publicly stated
• Years of Experience: Not publicly stated
• Services Offered: Assurance, tax and legal (through relevant group entities), deals/transactions support, accounting advisory, business consulting (service availability varies by engagement and entity)
• Price Range: Varies / depends
• Contact Phone: Not publicly stated
• Contact Email (if available): Not publicly stated
• Website (if available): https://www.pwc.com/jp
• Google Map or ProfessNow or Yelp Link:
• Google Reviews Summary: Not publicly stated
• Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Premium, transaction support, structured corporate engagements, bilingual corporate needs

#3 — EY Japan

• Rating: Not publicly stated
• Years of Experience: Not publicly stated
• Services Offered: Assurance, consulting, strategy and transactions, tax (through relevant group entities), accounting and reporting support (service availability varies by engagement and entity)
• Price Range: Varies / depends
• Contact Phone: Not publicly stated
• Contact Email (if available): Not publicly stated
• Website (if available): https://www.ey.com/ja_jp
• Google Map or ProfessNow or Yelp Link:
• Google Reviews Summary: Not publicly stated
• Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Premium, governance/reporting projects, corporate transformation support, international groups

#4 — KPMG Japan

• Rating: Not publicly stated
• Years of Experience: Not publicly stated
• Services Offered: Audit, tax (through relevant group entities), advisory, risk consulting, accounting support (service availability varies by engagement and entity)
• Price Range: Varies / depends
• Contact Phone: Not publicly stated
• Contact Email (if available): Not publicly stated
• Website (if available): https://home.kpmg/jp/ja/home.html
• Google Map or ProfessNow or Yelp Link:
• Google Reviews Summary: Not publicly stated
• Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Premium, risk and compliance projects, established mid-to-large businesses

#5 — BDO Japan

• Rating: Not publicly stated
• Years of Experience: Not publicly stated
• Services Offered: Audit & assurance, advisory, and related professional services (service availability varies by engagement and entity)
• Price Range: Varies / depends
• Contact Phone: Not publicly stated
• Contact Email (if available): Not publicly stated
• Website (if available): https://www.bdo.or.jp/
• Google Map or ProfessNow or Yelp Link:
• Google Reviews Summary: Not publicly stated
• Best For (Budget / Emergency / Premium / Family-Friendly / etc.): Mid-market businesses, structured advisory needs, companies wanting a global network alternative

Comparison Table

Cost of Hiring a Accountant / CA in Osaka

Average price range

Varies / depends. Many Accountant / CA engagements in Osaka are scoped as either:

• Monthly retainer (ongoing accounting support, reporting packs, periodic advisory)
• Fixed-fee projects (transaction support, due diligence, system/process reviews)
• Time-based billing (hourly/day rates for advisory-heavy work)

For individuals and small businesses seeking basic bookkeeping and tax filing, a local bookkeeping/tax practice may be more cost-effective than a large corporate-focused firm. For complex reporting, assurance, or multi-entity needs, larger firms may be appropriate even if cost is higher.

Emergency pricing (if applicable)

24/7 “emergency” service is not typical for accounting in the same way it is for trades or medical services. Rush work (tight deadlines, urgent filings, board deadlines, lender requests) may involve:

• priority staffing,
• accelerated review,
• and higher fees,

but terms vary / depend on the provider and timeline.

What affects cost

Key cost drivers include:

• Scope: bookkeeping vs management reporting vs assurance vs advisory
• Number of entities, bank accounts, and transaction volume
• Quality of existing records (cleanup/catch-up work can be significant)
• Languages required (Japanese-only vs bilingual reporting)
• Deadline urgency and stakeholder requirements (banks, investors, parent companies)
• Systems: spreadsheets vs integrated accounting/ERP workflows

Frequently Asked Questions (FAQ)

How much does a Accountant / CA cost in Osaka?

Varies / depends, and there is no standardized public average. Cost is typically driven by scope, complexity, volume, and whether the work is ongoing (retainer) or project-based.

How to choose the best Accountant / CA in Osaka?

Start by matching the provider to your need: bookkeeping/tax compliance vs audit/assurance vs advisory. Then ask for a written scope, timeline, deliverables, and who will actually do the work day-to-day.

Are licenses required in Osaka?

For certain work, yes. Audit/assurance work generally requires appropriately licensed professionals (e.g., public accountant credentials), while tax filing/representation is typically handled by a licensed tax professional (税理士). Requirements depend on the service.

What’s the difference between an Accountant / CA and a tax accountant in Japan?

An Accountant / CA often focuses on accounting, reporting, assurance, and advisory. A tax accountant (税理士) is typically the key credential for tax filings and representation. Many firms coordinate across both roles depending on your needs.

Do these Osaka firms support English-speaking clients?

Varies / depends by office and engagement team. If you need bilingual service, confirm (1) who prepares the reports and (2) whether meetings and deliverables are available in English.

Can an Accountant / CA help with company formation in Osaka?

Some can support early-stage setup steps and financial structuring, but company formation filings may involve other licensed professionals. Ask exactly what they will handle directly versus coordinate.

Who offers 24/7 service in Osaka?

Not publicly stated. Accounting providers typically operate during business hours, though urgent deadlines may be handled with extended hours by agreement. If you need rapid turnaround, confirm availability before engaging.

What documents should I prepare before contacting a Accountant / CA?

Have your last financial statements (if any), bank statements, payroll summaries, invoices/receipts, prior tax filings (if applicable), and a clear summary of what you need (deadline, stakeholders, and expected outputs).

Is it better to hire a local Osaka practice or a large firm?

If your needs are straightforward (routine bookkeeping/tax compliance), a smaller local practice may be a better cost fit. If you have cross-border operations, audits, or complex stakeholder reporting, larger firms can be more suitable.

How long does it take to onboard a Accountant / CA?

Varies / depends. Onboarding can be quick if your books are clean and systems are organized, and longer if catch-up bookkeeping or process fixes are required. Ask for an onboarding plan and first 30–60 day milestones.

Final Recommendation

Choose based on the complexity of your situation:

• If you need audit/assurance, group reporting, transactions, or multi-entity advisory, start with Deloitte Tohmatsu, PwC Japan, EY Japan, or KPMG Japan. These are typically best for structured, high-stakes corporate work where process and review depth matter.
• If you want a mid-market-focused option with a global network footprint, BDO Japan can be a practical shortlist candidate.

If you’re primarily looking for low-cost bookkeeping and routine tax filing, you may be better served by a smaller Osaka-based accounting/tax practice. This guide focuses on widely recognized Accountant / CA providers with clear public presence; always request a written quote and confirm who is responsible for deliverables.

Get Your Business Listed

If you’re an Accountant / CA in Osaka and want your details added or updated, email contact@professnow.com. You can also registe & Update yourself at https://professnow.com/.