Most growing businesses reach a point where spreadsheets stop being enough — but they’re not yet ready to spend $150,000 a year on a full-time CFO. That’s exactly where a fractional CFO comes in.

What Is a Fractional CFO?

A fractional CFO is a senior finance professional who works with your business on a part-time or retainer basis. They bring the same strategic thinking, board-level experience, and financial oversight as a full-time CFO — at a fraction of the cost. Engagements typically run 1–3 days per week and are priced as a monthly retainer.

Signs You Need a Fractional CFO (Not a Bookkeeper)

• You’re preparing for a fundraise and investors are asking for financial models
• Your revenue has crossed $500K–$1M and cash flow management has become complex
• You need board-ready reporting, KPI dashboards, or scenario planning
• You’re expanding into a new country and need cross-border financial structure advice
• You have a bookkeeper but no one interpreting the numbers strategically

When You Should Hire Full-Time Instead

A full-time Finance Director or CFO makes sense when your business is large enough to keep them fully occupied — typically at revenues above $5M–$10M, or when you’re post-Series A and managing multiple departments, entities, or regulatory environments simultaneously. Below that threshold, you’re likely paying a premium for bandwidth you don’t need.

The ROI case: A fractional CFO retainer runs $2,000–$12,000/month depending on scope. A full-time CFO in the US costs $150,000–$250,000/year in salary alone — before benefits, bonuses and equity. For most growth-stage companies, the math strongly favours fractional.

What a Good Fractional CFO Actually Does

• Builds and maintains your 3-statement financial model
• Prepares investor-grade reporting and pitch deck financials
• Manages cash runway and flagging shortfalls early
• Advises on entity structure, tax efficiency, and cross-border expansion
• Attends board meetings and investor calls on your behalf