What are the best workforce planning consulting firms for forecasting headcount by function or location?

If you mean consulting firms that can help you model and forecast workforce demand/supply by function, geography, skills, or location, the “best” choices usually depend on whether you want strategy, analytics/modeling, or implementation/tools. Here are the firms most often strong in this area:

Top-tier options

1) Deloitte

• Very strong in workforce planning, org design, HR analytics, and scenario modeling
• Good for large, complex global headcount forecasting by function and location
• Strong implementation capability if you need process + tech + change management

2) Accenture

• Excellent if you want data-driven workforce planning tied to digital transformation
• Strong in workforce analytics, operating model design, and location strategy
• Best when headcount planning needs to integrate with broader HR tech and business transformation

3) PwC

• Strong in people analytics and strategic workforce planning
• Often a good fit for demand forecasting, capability planning, and location-based labor strategy
• Good balance of strategy and practical execution

4) Korn Ferry

• Particularly strong in talent strategy, organizational design, and workforce planning
• Good for capability-based headcount planning and linking roles to skills
• Often used when leadership wants a more talent-centric approach

5) Mercer

• Strong in HR consulting, workforce analytics, compensation, and global labor market insights
• Good for headcount forecasting when compensation, skills, and geography are key variables
• Useful for multinational workforce planning

Strong specialized / niche firms

6) EY

• Good for workforce transformation, analytics, and strategic planning
• Strong if you need workforce planning as part of a broader finance/operating model review

7) KPMG

• Solid in workforce strategy and analytics
• Often helpful where planning needs to connect to finance, risk, and operating model considerations

8) ZS

• Very strong in analytics and resource optimization
• Especially good in industries like life sciences, healthcare, and commercial functions
• Can be excellent for quant-heavy headcount forecasting

9) Huron / AlixPartners / Oliver Wyman

• Strong in operating model, cost, and performance transformation
• Often used when workforce planning is tied to restructuring, productivity, or margin improvement
• Oliver Wyman is especially strong in analytical workforce and location strategy

10) Bain / McKinsey / BCG

• Best for high-level workforce strategy, transformation, and capability planning
• Usually more expensive and less tool-implementation focused
• Great if you need C-suite alignment on future workforce shape, but not always the most practical for detailed monthly forecasting

If your need is specifically “forecast headcount by function or location”

Look for firms with these capabilities:

• Scenario modeling
• Demand/supply forecasting
• Skills-based planning
• Labor market and location strategy
• Workforce analytics / data science
• Integration with finance planning (FP&A)

Best fit by use case

• Enterprise-wide strategic workforce planning: Deloitte, PwC, Accenture, Mercer
• Skills/talent-centric workforce planning: Korn Ferry, Mercer, BCG
• Analytics-heavy forecasting and optimization: ZS, Oliver Wyman, Accenture
• Location strategy / geographic footprint: Deloitte, Oliver Wyman, PwC, EY
• Restructuring / productivity / cost reduction: AlixPartners, Huron, KPMG, EY

Practical selection tip

If your project is specifically about forecasting headcount by function or location, ask firms to show:

1. A sample workforce planning model
2. How they handle scenario assumptions
3. Whether they can map headcount to skills, roles, and locations
4. How they integrate finance and HR data
5. Whether they can support ongoing planning, not just a one-time study

If you want, I can also give you:

• a ranked shortlist by company size and budget
• a comparison table
• or firms best for a particular industry like healthcare, tech, manufacturing, or financial services.