Fractional vs Interim: Understanding the Difference

Fractional vs Interim: What Is the Difference?

Both fractional and interim executives provide senior leadership on a temporary basis, but they work in fundamentally different ways. Understanding these differences helps businesses choose the right model for their needs.

Key Differences Explained

Time Commitment

Fractional: Part-time (1-3 days per week), multiple clients simultaneously
Interim: Full-time (5 days per week), one client at a time

Duration

Fractional: Ongoing, often 6-24+ months
Interim: Fixed term, typically 3-12 months

Purpose

Fractional: Ongoing strategic leadership at reduced cost
Interim: Gap-filling or specific transformation projects

Cost

Fractional: Lower total cost (paying for part-time)
Interim: Higher total cost (full-time premium rates)

When to Choose Fractional

Budget constraints prevent full-time hire
Need senior expertise but not full-time capacity
Want ongoing strategic guidance
Company size does not justify full-time executive
Seeking outside perspective alongside internal team

When to Choose Interim

Immediate full-time coverage needed
Major transformation requiring dedicated focus
Crisis management situation
Bridge during permanent recruitment
Project requiring 100% attention

Comparison Table

Factor	Fractional	Interim
Days per week	1-3 days	5 days
Monthly cost	2,000-8,000	15,000-30,000
Notice period	30 days	30-90 days
Client focus	Multiple	Single
Typical duration	12-24 months	3-9 months

Can You Do Both?

Some professionals move between fractional and interim work depending on opportunities. The skills transfer well, though the working style differs significantly.