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B2B IT Services in Japan

Understanding business-to-business IT in Japan's unique corporate environment

Comprehensive guide to B2B IT services in Japan. Learn about Japanese business processes, from quotations to invoices, and how eSolia helps international companies navigate B2B relationships since 1999.

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B2B IT Professional Services Tokyo - eSolia Inc.

Foundations take root with eSolia eSolia is a Tokyo-based B2B Information Technology management firm specializing in business-to-business solutions for international companies. We provide high-quality business-focused consulting, project and outsourcing services to a variety of blue-chip foreign and Japanese organizations in Japan and abroad. Our concept is simple - our services are Standards-based, have an in-built Awareness of your business and culture, and are delivered by a team of Experienced experts. We have a successful track record of delivering results executing high-pressure, multi-cultural and multi-language projects, a fact which brings us the confidence to find creative solutions for all your system and process challenges. At eSolia, we sow the seeds that help you build your business on strong IT foundations. Contact us, and let us begin helping your company meet its business commitments today. Download Our Capability Statement For detailed information about eSolia's capabilities and proven track record, please review our Capability Statement (PDF). Learn More Use the sidebar navigation to explore detailed information about eSolia: Company Overview - Basic information, address, access Philosophy - Our mission and values Management Team - Our executives eSolia Introduction Video Learn more about our company and services through our introductory video. eSolia Introduction Video

B2B IT Services

When you engage a B2B professional services firm, getting your business problem solved is the first thing on your mind, not the firm's history or philosophy, or the latest fad. Designing and implementing practical, realistic and future-proof enterprise solutions for your business and IT challenges is what eSolia's B2B specialists do best. Your Challenges, Our Solutions Think about eSolia services in these ways: By Challenge - what challenges are you up against now? Are you involved in a merger and need help migrating or combining IT systems? Is your Japan IT department not performing well? Do you have a move coming up? By Service Area - what sorts of services eSolia is providing, from consulting to defining your requirements, to project management to keep a project on time & within the budget, or to post-implementation support. By Topic - focused on a specific need or topic: "I need someone to manage my project" or "I need a company to build my email system" and the like. We are confident that our experience and areas of professional expertise speak for themselves, but allow us to introduce you to a few good solutions. What challenges are you facing today? Service Areas Infrastructure Office moves, network setup, server management, cloud migration and all aspects of IT infrastructure support. Learn more Security Cybersecurity, data protection, security policy development and comprehensive security solutions. Learn more IT Consulting IT strategy planning, project management, process improvement and consulting to achieve business goals. Learn more Outsourcing Complete or partial IT department outsourcing and specialized staff augmentation services. Learn more Why Choose eSolia Bilingual Support: Complete bilingual support in Japanese and English Experience & Track Record: Solving IT challenges for companies since 1999 Comprehensive Services: One-stop support from infrastructure to security Flexible Solutions: Customized solutions tailored to your specific needs Emergency Support: Emergency response available when you need it Allow us to Propose a Solution Tell us about your challenges. We'll propose the optimal solution for your needs.

Understanding business-to-business IT services in Japan’s unique corporate environment is crucial for international companies. This guide explains how eSolia’s B2B approach helps you navigate Japanese business processes, procurement cycles, and partnership expectations.

What Makes B2B IT Different?

Business-to-business IT services require a fundamentally different approach than consumer IT support. At eSolia, we specialize exclusively in B2B relationships, understanding that:

  • Mission-Critical Operations - Your IT needs directly impact business continuity and revenue
  • Multi-Stakeholder Decisions - IT purchases involve formal approval processes across departments
  • Documented Processes - You require SLAs, accountability, and clear service agreements
  • Long-Term Partnerships - Successful B2B relationships are built on trust over time, not transactions
  • Compliance & Security - Enterprise-grade security, data protection, and regulatory compliance are mandatory
  • Scalability - Solutions must grow with your business needs

With more than 26 years serving B2B clients in Japan, we understand both the technical requirements and the business relationship dynamics that make B2B IT successful.

The Japanese B2B Business Process

Japan’s B2B environment has unique characteristics that international companies must navigate. Understanding this structured approach is essential for successful business relationships.

The Documentation Cycle

Japanese B2B transactions follow a formal documentation process that ensures clarity, accountability, and proper record-keeping:

B2B Document Cycle: From Quotation to Receipt

The Japanese B2B Documentation Flow

1. 見積書 (Mitsumori / Quotation)

The process begins with a detailed, formal quotation:

  • Detailed line items - Every service, product, and cost clearly specified
  • Multiple revisions - Expect several rounds of refinement based on client feedback
  • Approval workflows - Quotations go through internal 稟議 (ringi) consensus approval
  • Validity period - Quotations include expiration dates (typically 30-90 days)
  • Formal presentation - Often presented in person or via detailed email

eSolia Approach: We provide bilingual quotations with clear explanations in both Japanese and English, ensuring all stakeholders understand the scope and costs.

2. 発注書 (Hatchusho / Purchase Order)

After quotation approval, the client issues a formal purchase order:

  • Official authorization - Legal commitment to proceed with the transaction
  • PO matching - Our quotation number referenced on the PO
  • Terms confirmation - Payment terms, delivery dates, and conditions formalized
  • Internal tracking - PO numbers used for budget tracking and accounting

3. 納品書 (Nouhinsho / Delivery Note)

Upon completion of services or delivery of products:

  • Delivery documentation - Formal record of what was delivered
  • Acceptance confirmation - Client signs to acknowledge receipt
  • Quality verification - Opportunity to verify services meet specifications
  • Invoice prerequisite - Required before invoicing in many companies

eSolia Approach: We provide detailed delivery notes documenting all work completed, with bilingual descriptions for transparency.

4. 請求書 (Seikyusho / Invoice)

The formal request for payment:

  • Monthly billing cycles - Often consolidated monthly invoices
  • Bank transfer standard - 振込 (furikomi) via bank transfer is the norm
  • Payment terms - Typically 30-60 days from invoice date
  • Detailed breakdown - Line-by-line match to original quotation
  • Tax compliance - Proper consumption tax calculation and display

eSolia Approach: Bilingual invoices with clear payment instructions in both languages, matching all previous documentation.

5. 領収書 (Ryoshusho / Receipt)

Official receipt for tax and accounting purposes:

  • Tax documentation - Required for client’s accounting and tax filings
  • 収入印紙 (Shunyu Inshi) - Revenue stamps required for amounts over ¥50,000
  • Official seal - Company seal (社印 shain) affixed for authenticity
  • Permanent record - Maintained for statutory record-keeping periods

B2B Contract Considerations in Japan

Contract Types

基本契約書 (Kihon Keiyakusho / Master Service Agreement)

  • Framework agreement defining overall relationship
  • General terms, conditions, and responsibilities
  • Typically remains in effect for 1-3 years
  • Foundation for all individual work orders

個別契約書 (Kobetsu Keiyakusho / Individual Work Orders)

  • Specific contracts for each project or service
  • References the master agreement
  • Details scope, timeline, and deliverables
  • More flexible than master agreement

eSolia Approach: We offer both MSA frameworks for ongoing relationships and project-specific contracts, with bilingual documentation ensuring all parties understand obligations.

SLA Expectations

Japanese B2B clients expect clearly defined Service Level Agreements:

  • Response times - Specific commitments (e.g., 2-hour response for critical issues)
  • Resolution targets - Time-to-resolution for different priority levels
  • Availability guarantees - Uptime percentages for critical systems
  • Escalation procedures - Clear paths for issue escalation
  • Performance metrics - Regular reporting on SLA compliance

Confidentiality & Data Protection

  • 秘密保持契約 (NDA) - Non-disclosure agreements are standard
  • 個人情報保護 (Privacy Protection) - Compliance with Japan’s APPI (Act on Protection of Personal Information)
  • Data residency - Understanding where data is stored and processed
  • Information security - ISO 27001 and other security certifications valued

eSolia Approach: We maintain ISO 27001 compliance and provide secure, Japan-based data handling with comprehensive NDAs.

Building B2B Relationships in Japan

The 稟議 (Ringi) Process

Understanding Japan’s consensus-based approval system is crucial:

What is Ringi?

  • Consensus-building approval process
  • Written proposal circulates through relevant departments
  • Each stakeholder provides input and approval
  • Decision represents organizational consensus, not individual choice

Timeline Expectations:

  • Can take weeks or months for significant decisions
  • Multiple stakeholders must review and approve
  • Patience and persistence are essential

How to Support Your Client Through Ringi:

  • Provide comprehensive documentation upfront
  • Anticipate questions and prepare detailed answers
  • Be available for clarifications during the process
  • Understand delays are normal, not rejection

eSolia Approach: We provide detailed technical documentation, business justifications, and ROI calculations in both languages to support your internal approval process.

Cultural Considerations

Face-to-Face Meetings

  • Initial meetings preferably in person
  • Video calls acceptable after relationship established
  • Physical presence shows commitment and respect

Business Card Exchange (名刺交換 Meishi Kokan)

  • Formal exchange with both hands
  • Study the card before putting it away
  • Cards represent the person - treat with respect

Communication Style

  • Indirect communication common
  • Reading between the lines important
  • Building trust takes time

After-Hours Relationship Building

  • 飲み会 (Nomikai / drinking gatherings) common
  • Informal settings build personal relationships
  • Personal relationships support business relationships

B2B vs B2C: Why It Matters

Many IT providers try to serve both business and consumer markets. eSolia’s exclusive B2B focus means:

B2B (eSolia)B2C
Multi-stakeholder approval processesIndividual purchase decisions
Long-term partnerships (years)Transactional relationships
Enterprise SLAs and accountabilityBest-effort support
Compliance and security mandatoryBasic security sufficient
ROI and TCO focusPrice and features focus
Integration with business processesStandalone solutions
Proactive, preventive approachReactive, break-fix approach
Business hours + emergency supportConsumer-focused hours

Key Takeaways

Understanding and following Japan’s B2B processes protects your business legally and ensures tax compliance. The formal documentation cycle (見積書 → 発注書 → 納品書 → 請求書 → 領収書) isn’t bureaucracy—it’s risk management.

Timeline expectations:

  • New vendor approval: 1-3 months (稟議 process)
  • Each transaction: Multiple formal documents required
  • Bank transfer payment: Standard 30-60 day terms

Critical differences from other countries:

  • Email approvals are not legally sufficient
  • Formal POs are required by tax law
  • Proper documentation protects you in disputes and audits

With more than 26 years serving international companies in Japan, eSolia provides bilingual support throughout the B2B cycle, ensuring compliance with both Japanese requirements and global standards. Contact us to discuss your B2B IT needs.


Keywords: B2B IT services Japan, Japanese business processes, mitsumori quotation, ringi approval process, international companies Japan, enterprise IT solutions, bilingual IT support, Tokyo B2B IT, business-to-business technology