michaelrochonnn/mckinsey-bcg-consulting/consulting-firm-methodology-selection

Consulting Firm Methodology Selection

When to Use This Skill

Use this skill when:

• Selecting a consulting approach for a defined business problem
• Comparing firm styles between McKinsey and BCG
• Deciding between rapid strategic delivery vs deep implementation support
• Analyzing trade-offs between time horizon and execution rate
• Clients are evaluating which consulting methodology aligns with their organizational needs

McKinsey Methodology (Fact-Based)

Core Characteristics:

• Emphasizes objective facts and evidence-based analysis
• Uses pre-determined frameworks to systematically collect and analyze data
• Fixed project timeline: typically 3 months per engagement

Team Structure:

• Senior Engagement Manager leads the project
• Supported by multiple young consultants
• Clear hierarchy with focused deliverables

Delivery Model:

• Provide the strategic answer upfront
• Present completed analysis and recommendations
• Leave implementation responsibility to the client
• Hand off strategy for client execution

Advantages:

• High efficiency and speed
• Clear, structured deliverables
• Objectively defensible conclusions
• Minimal client time investment during analysis

Limitations:

• Risk of "paper theory"—strategies that look good on paper but lack practical grounding
• Low implementation rate: typically 0% to 10% of recommendations executed
• Limited client ownership of the solution
• Minimal organizational capability building

Best For:

• Situations requiring quick, objective analysis
• Clear, well-defined problems
• Clients with strong internal implementation capabilities
• Time-sensitive strategic decisions

BCG Japan Methodology (Psychology-Based)

Core Characteristics:

• Emphasizes client psychology and self-discovery
• Consultants integrate deeply into client organization
• Exploratory process through trial and error with client

Engagement Timeline:

• Long-term engagement: typically 3 years
• Ongoing relationship and support
• Adaptive to changing circumstances

Team Structure:

• Consultants become embedded in client operations
• Close working relationships with client teams
• Collaborative problem-solving approach

Delivery Model:

• Guide clients to discover answers themselves
• Reveal insights gradually through joint exploration
• Build client ownership throughout process
• Support implementation actively

Advantages:

• High implementation rate: up to 70% of strategies executed
• Strong client ownership and buy-in
• Builds organizational capabilities
• Strategies adapted to real-world constraints

Limitations:

• Slower pace and longer time commitment
• Higher resource intensity
• Less structured deliverables initially
• May not fully push client to their potential

Best For:

• Complex, ambiguous problems requiring cultural change
• Organizations needing implementation support
• Situations where client buy-in is critical
• Long-term transformation initiatives

Decision Framework

Key Trade-off

• McKinsey Approach: 3 months to achieve 10% implementation
• BCG Japan Approach: 3 years to achieve 70% implementation

Selection Criteria

Decision Process

1. Assess Time Constraints

• Is there urgency requiring 3-month delivery?
• Can the organization commit to a 3-year engagement?

1. Evaluate Implementation Capacity

• Does the client have strong internal execution capabilities?
• Is implementation support critical for success?

1. Define Problem Nature

• Is the problem clearly defined and analytical?
• Does it involve complex organizational or cultural change?

1. Consider Client Preferences

• Does the client prefer receiving a complete answer?
• Will the client be more committed to self-discovery?

1. Select Methodology

• McKinsey: Prioritize speed and facts
• BCG Japan: Prioritize depth and implementation

Important Note

The BCG style described refers specifically to BCG Japan under Hiroshi Hori. Global BCG practices may vary from this methodology archetype.