Skip to content

CFO · Comparison Guide

Fractional CFO vs Interim CFO: which is right for you?

Complete comparison of fractional vs interim CFOs. Costs, duration, engagement models, and when to choose each option for your financial leadership needs.

Fractional CFOInterim CFO
Duration6-24 months3-6 months
Time commitment2-3 days/week4-5 days/week
Day rate£700-£1,400£1,000-£1,800
Monthly cost£5k-£17k£20k-£36k
Notice period30-90 days1-4 weeks
Multi-client workingYesNo
IR35 statusOutside IR35Often inside IR35
Best forFinancial strategyCrisis/transition
Handover periodGradual transitionDefined end date

When to choose fractional CFO

Strategic financial leadership
Ongoing financial strategy, planning, and reporting. Perfect for businesses that need senior financial expertise without full-time commitment.
Cost-effective expertise
Access C-suite financial leadership at £5k-£17k per month. Fractional CFOs work across multiple clients, bringing diverse experience.
Authority Sources · Independently Verified
UK Finance

Financial Leadership Models 2026

"Research on fractional vs interim financial leadership adoption across UK mid-market companies."

View source