Quantum Accounting Inc.

Name

Quantum Accounting Inc.

Legal name

Quantum Accounting株式会社

Website

https://quantum.accountants

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Ownership category

akta.pro rank

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Advisory and Consulting Services: Professional advisory fees for M&A advisory, IFRS/USGAAP implementation support, Nasdaq listing support, and cross-border restructuring services. Revenue generated through project-based engagements and ongoing advisory retainer arrangements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Quantum Accounting is a professional accounting advisory firm providing cross-border accounting and tax advisory services for Japanese companies expanding internationally. The firm delivers integrated strategy, contract design, accounting treatment, and tax planning across M&A advisory, IFRS/USGAAP implementation, Nasdaq listing support, domestic IPO support, and overseas subsidiary management. Services are delivered by a team combining Big 4 audit firm alumni, Japanese/U.S. CPAs, lawyers, and former executives of listed companies.

Product overview

Quantum Accounting Inc. is a professional accounting advisory firm offering a unified suite of cross-border accounting and tax advisory services for Japanese companies. The core service portfolio comprises six interconnected offerings: M&A and Organizational Restructuring Advisory (covering deal structuring, due diligence, and valuation), IFRS and US GAAP Financial Reporting Support (including implementation and ongoing compliance), Nasdaq Listing Support (covering IPO planning, SEC registration, and SOX compliance), domestic IPO Support, Overseas Subsidiary Management and BPO Support, and the Quantum Edgar Watcher Bot tool for SEC filing monitoring. These services are complemented by the Japan Business Concierge portal for Japan market entry support. Rather than a software platform, the firm delivers expertise-based advisory services where professional staff serve as the 'third strategist' alongside client management and CFOs.

Differentiator

Problem solved

Functional benefit

Products and services

• M&A・組織再編アドバイザリー (M&A and Organizational Restructuring Advisory)
• IFRS・USGAAP決算支援 (IFRS and US GAAP Financial Reporting Support)
• Nasdaq上場支援 (Nasdaq Listing Support)
• IPO支援 (IPO Support)
• 海外子会社の経営管理・BPO支援 (Overseas Subsidiary Management and BPO Support)
• Quantum Edgar Watcher Bot
• Japan Business Concierge

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

One partnership is on record.

• GSV Global M&A NetworkcoreStrategic or Co-development Partner · 1 July 2025Quantum Accounting officially joined the GSV Global M&A Network in July 2025. The network, founded by GS Verde Group in the UK, connects trusted experts across legal, financial, and tax disciplines worldwide. Membership enables Quantum Accounting to collaborate with local specialists possessing deep knowledge of country-specific legal frameworks, tax regimes, and business customs, enhancing cross-border M&A transaction support including due diligence, deal structuring, and post-acquisition integration.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Deloitte Tohmatsu LLC: Japan member of Deloitte's global Big 4 network, with established practices in IPO readiness, cross-border M&A, IFRS implementation, and SEC/SOX advisory. Directly competes for the same Japanese-corporate cross-border mandates as Quantum Accounting.
• Houlihan Lokey: Global investment bank with a strong M&A advisory practice and Japan presence, advising Japanese corporates on cross-border M&A transactions. Adjacent incumbent peer competing for the same cross-border M&A mandates.
• Ernst & Young ShinNihon LLC: EY's Japan audit and advisory firm with established IPO advisory, IFRS/USGAAP, and cross-border M&A practices serving Japanese companies pursuing US listings and inbound/outbound transactions — a Big 4 incumbent peer to Quantum Accounting.
• KPMG AZSA LLC: Japan's KPMG member firm and one of the Big 4 audit and advisory networks operating in Tokyo. Provides IPO advisory, IFRS/USGAAP, M&A advisory, and SOX compliance services that overlap directly with Quantum Accounting's offerings, though at significantly larger scale and broader scope.
• Lincoln International: Global mid-market investment bank with Japan offices providing M&A advisory, fairness opinions, and valuations. Competes with Quantum's advisory work on Japanese cross-border mid-market M&A mandates, particularly around valuation and PPA.
• PwC Japan Group: PwC's Japan group of firms offers audit, tax, and advisory services including Nasdaq listing support, IFRS/USGAAP, and cross-border M&A — a Big 4 incumbent competing for the same Japanese cross-border advisory engagements as Quantum.

Direct peers

• BDO Japan: Japan member of BDO Global, an international accounting network providing audit, tax, and advisory services with cross-border capabilities. A mid-tier alternative for Japanese companies seeking international accounting and listing advisory.
• Grant Thornton Japan: Mid-tier international accounting network in Japan offering audit, tax, and advisory services including IPO support and cross-border advisory. More comparable in size and boutique positioning than the Big 4, directly competing for Japanese mid-market cross-border mandates.
• Crowe Japan: Japan presence of Crowe Global, a mid-tier accounting network providing audit, tax, and advisory services to Japanese mid-market companies including international expansion and listing-related work.
• RSM Japan: Japan member of RSM International, a mid-tier accounting and advisory network offering audit, tax, and consulting services including cross-border advisory for Japanese SMEs pursuing international growth.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/Quantum_0701
• YouTubeyoutube.com/channel/UCnSBg2A6OBfYU_2FY6LrVOg
• Facebookfacebook.com/Quantum-Accounting-Inc-1715374068533335
• LinkedInlinkedin.com/company/quantum-accounting-inc

Revenue estimate

Valuation estimate

Number of profiles

Profiles21 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Quantum Accounting Inc.