Tax Accountant Corporation Ido

What Tax Accountant Corporation Ido does

Tax Accountant Corporation Ido (税理士法人 AKJパートナーズ 大阪Idoオフィス), founded in 2003 by certified tax accountant Kumiko Nakao in Osaka, Japan, operates a tax accounting and management consulting practice serving small and medium-sized enterprises and individual business owners in the Kansai region. The firm is a member of the AKJ Partners tax accountant corporation group and operates alongside a subsidiary, I do Consulting K.K., forming the I do Group. Its single headquarters is located at 嶌野ビル5階, Kita-ku, Osaka.

The firm's core offering combines tax compliance with proactive management consulting built around proprietary departmental management control materials (部門別経営管理資料), departmental cost accounting systems, and a structured PDCA delivery model: monthly on-site visits, monthly financial closing, and recurring reporting meetings. Technology is human-process-centric rather than software-platform-based — codified templates, banker-accompaniment services, business plan authoring, and self-accounting implementation support — augmented by a 20+ year thought-leadership blog and SEO presence. The firm holds Certified Support Organization (認定支援機関) designation from Japan's SME Agency, enabling participation in subsidized business improvement programs.

Revenue is generated primarily through recurring monthly or quarterly advisory retainers (corporate 33,000–110,000 JPY/month; individual 22,000–33,000 JPY/month), supplemented by one-time annual settlement fees (110,000–550,000 JPY), year-end tax adjustments, departmental accounting add-ons, and a la carte services such as payroll, bookkeeping, stock valuation, and seminars. Customer acquisition is sales-led, driven by the firm's website, organic search, consultation requests, and referral networking, with no public funding or external institutional ownership disclosed.

Name

Tax Accountant Corporation Ido

Legal name

税理士法人 AKJパートナーズ 大阪Idoオフィス

Website

https://ido.co.jp

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

11–50 employees

Short description

Tax Accountant Corporation Ido is an Osaka-based tax accounting and management consulting firm, founded in 2003 by Kumiko Nakao, serving Japanese SMEs and individual business owners through recurring advisory retainers, proprietary departmental cost accounting tools, and monthly PDCA-based on-site consulting engagements.

Ownership category

akta.pro rank

Product category

Tax Accounting & Management Consulting

NAICS

Offices of Certified Public Accountants (541211)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro industry

PRIMARYBPAHABAF

Financial Reporting & Technical Accounting Advisory (GAAP/IFRS)

Business & Public Services/Professional Services (Legal, Accounting, Consulting)/Accounting, Audit & Tax Services

SECONDARYBPAAAGAI

Tax Operations Support (Indirect Tax, Withholding, Compliance Admin)

Business & Public Services/Administrative & Support Services (BPO, Call Centers, Back Office)/Finance & Accounting Outsourcing (AP/AR, GL, Billing)

Keywords

• Tax accounting services
• Management consulting
• SME advisory
• Bookkeeping outsourcing
• Business plan creation

Headquarters

HQ city

Osaka

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. 顧問サービス (Advisory Services): Monthly advisory retainer fees charged to corporate and individual clients, with frequencies of monthly or quarterly. This is the primary recurring revenue stream. Corporate clients pay 33,000–110,000 JPY per month depending on service tier; individual business owners pay 22,000–33,000 JPY per month.
2. 決算業務 (Annual Settlement Services): One-time fees charged per annual financial closing and tax filing. Corporate clients pay 110,000–550,000 JPY per settlement; individual business owners pay 110,000 JPY.
3. 年末調整 (Year-end Tax Adjustment): Annual year-end tax adjustment services included in the service package, with additional per-person fees for clients with 11+ employees at 2,200 JPY per person.
4. 部門別会計 (Departmental Accounting): Additional management accounting services for departmental-level profit tracking, billed as a base fee plus per-department charges (5,500 JPY base + 2,200 JPY+ per department per month).
5. その他のサービス (Other Professional Services): A la carte services including tax office filings (11,000 JPY+), bookkeeping outsourcing (33,000 JPY+), payroll calculation (33,000 JPY+), stock valuation (55,000 JPY+), and business planning seminars (220,000 JPY+).

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Tax Accountant Corporation Ido is a tax accounting and management consulting firm serving small and medium-sized enterprises (SMEs) and individual business owners in Osaka, Japan. Its core offerings combine tax return preparation, accounting, and statutory filing services with proactive management consulting aimed at building high-profit business structures through departmental cost accounting, cash flow management, and PDCA-driven strategic planning. The firm delivers services through monthly on-site visits, monthly closing cycles, and reporting meetings, supplemented by business plan creation, bank financing support, self-accounting implementation, and ongoing advisory retainers.

Product overview

Tax Accountant Corporation Ido (税理士法人 AKJパートナーズ 大阪Idoオフィス) operates as a tax accounting and management consulting firm under the I do Group. The company's core offerings consist of Tax Accounting Consulting (税務会計コンサルティング) and Management Consulting (経営コンサルティング) services, with specialized modules including Profitability Consulting (黒字化コンサルティング), Departmental Management Reporting (部門別経営管理資料), Self-Accounting Support (自計化サポート), Cash Flow & Financial Support (資金繰り・金融支援), Business Plan Creation (経営計画書作成), and monthly consulting visits. The company also operates a subsidiary,株式会社I doコンサルティング (I do Consulting K.K.), which extends the group's consulting capabilities. The overall portfolio is structured as a unified consulting service with multiple specialized modules designed to help SMEs achieve profitability and financial health.

Differentiator

Problem solved

Functional benefit

Products and services

• Tax Accounting Consulting (税務会計コンサルティング) Core tax and accounting consulting services providing tax return preparation, accounting audits, and various filing support for corporations and individual business owners.
• Management Consulting (経営コンサルティング) Management consulting services focused on improving business performance, including profitability analysis, PDCA cycle implementation, and strategic business planning.
• Profitability Consulting (黒字化コンサルティング) Black-ink (profitable) management consulting that helps clients achieve sustainable profitability through cash flow management, financial support, and business restructuring.
• Departmental Management Reporting (部門別経営管理資料) Original departmental management report materials including budget/actual/year-over-year comparisons, summary profit/loss statements, departmental profit/loss breakdowns, balance sheets, and cash flow summaries.
• Self-Accounting Support (自計化サポート) Consulting services that support clients in implementing self-accounting systems and building management accounting infrastructure.
• Cash Flow & Financial Support (資金繰り・金融支援) Financial support services including bank loan applications, financing negotiations, and cash flow management guidance.
• Business Plan Creation (経営計画書作成) Assistance in creating comprehensive business plans that can impress banks and financial institutions for loan applications and strategic direction.
• Monthly Visits, Monthly Closing & Reporting Meetings (月次訪問・月次決算・決算報告会) Regular monthly consulting services including monthly visits, monthly closing, and financial reporting meetings to clients.
• Business Owner Accounting Education (経営者が数字に強くなる勉強会) Regular study sessions and workshops to help business owners and executives understand accounting, financial statements, and numbers for better business decision-making.
• Annual Settlement Services (決算業務) One-time annual settlement services for corporate clients (110,000–550,000 JPY) and individual business owners (110,000 JPY), covering financial closing and tax filing.
• Year-End Tax Adjustment (年末調整) Annual year-end tax adjustment services included in the service package, with additional per-person fees for clients with 11+ employees at 2,200 JPY per person.

Segments3 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• AKJパートナーズ (AKJ Partners)coreStrategic or Co-development PartnerI do is a member of the AKJパートナーズ (AKJ Partners) tax accountant corporation group. The firm operates under the brand '税理士法人 AKJパートナーズ 大阪Idoオフィス.' The partnership provides a network of affiliated tax accounting professionals and shared resources across the AKJ group.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• freee K.K. Cloud-based accounting and HR/payroll SaaS platform targeting Japanese SMEs and sole proprietors. A disruptive SaaS alternative to traditional tax accountant services like I do, increasingly automating the bookkeeping and tax filing work that forms I do's baseline revenue.
• Money Forward, Inc. Leading Japanese fintech offering cloud accounting, payroll, and expense management for SMEs. Competes directly with I do's bookkeeping, payroll, and basic tax filing services, representing a structural cost-pressure threat to traditional firms.
• SMS Co., Ltd. (税理士ドットコム): Operates the 税理士ドットコム platform, a digital marketplace and media property connecting Japanese SMEs with tax accountants. Represents a channel-based disruption to traditional firms like I do, owning the inbound client flow that I do currently sources through its blog and website.

Broad incumbents

• Yayoi Co., Ltd. Major Japanese accounting software provider (弥生会計) for SMEs and sole proprietors. Provides the underlying software used by many tax accountant firms and competes for SME client relationships through direct software + advisory offerings.
• TKC Corporation: Japan's dominant provider of professional service technology and tax filing infrastructure for certified tax accountants and SMEs. Overlaps in serving the same SME tax/accounting ecosystem and competes indirectly for the same client wallets through its integrated TKC system.
• Funai Soken Holdings: Japan's largest management consulting firm focused on SMEs across industries (船井総合研究所). Comparable in addressing SME management improvement needs through consulting, but operates at much larger scale across multiple vertical practices.

Direct peers

• Mirai Consulting Group: Japanese consulting firm (みらいコンサルティング) offering CFO advisory, management consulting, and accounting support to SMEs. Highly comparable in target market, service mix, and positioning as a 'management-focused' accounting advisory for business owners.
• Tsuji & Hongo Tax Corporation: Largest tax accountant corporation (税理士法人) in Japan, providing tax accounting and advisory services to SMEs and individuals. Directly comparable in service category (tax + management consulting) but with national scale and brand presence versus I do's single-office footprint.
• AKJ Partners (税理士法人AKJパートナーズ): Tax accountant corporation group of which I do is a member. Provides a nearly identical service offering (tax accounting + management consulting) across multiple offices in Japan, making it the closest structural peer and brand-association-based competitor.
• Asunaro Accounting Office: Regional Japanese tax accountant office serving SMEs with tax filing, bookkeeping, and management consulting. Comparable in size, service portfolio, and SME-focused clientele, particularly in the Kanto region.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Tax Accountant Corporation Ido