Fractional CFO vs. Full-Time CFO: Which Does Your Company Actually Need?

The CFO question comes up at a predictable point in a company's growth: you've outgrown your bookkeeper, your investors are asking harder questions, and you realize you need senior finance leadership — but you're not sure whether to hire full-time or go fractional.

It's a real decision with real financial consequences. Here's how to think through it.

What a CFO actually does

Before comparing models, it's worth being clear on what CFO-level work actually involves. A CFO is responsible for:

• Financial strategy and planning — translating business goals into financial models and forecasts
• Investor and board relations — preparing board packages, managing investor communications, and supporting fundraising
• Capital structure and cash management — ensuring the company has the capital it needs and is deploying it efficiently
• Financial reporting and compliance — overseeing the accounting function and ensuring GAAP-compliant financials
• Risk management — identifying financial risks and building controls to manage them
• M&A and transactions — leading the finance side of acquisitions, divestitures, and strategic partnerships

A full-time CFO does all of this as their primary job. A fractional CFO does the same work — but on a part-time or project basis, typically serving multiple clients simultaneously.

The cost difference

This is where the math gets stark. A full-time CFO at a growth-stage company typically costs:

• Base salary: $200,000–$350,000
• Bonus: 20–30% of base
• Equity: 0.5–1.5% of the company
• Benefits and overhead: $30,000–$50,000

Total annual cost: $280,000–$500,000+, before equity dilution.

A fractional CFO engagement typically runs $5,000–$15,000 per month, depending on scope and hours. That's $60,000–$180,000 per year — for the same caliber of strategic finance leadership.

For most companies below $20–30M in revenue, the fractional model delivers equivalent value at a fraction of the cost.

When fractional makes sense

A fractional CFO is the right choice when:

• You need strategic finance leadership but can't justify a full-time hire
• You're preparing for a fundraise and need investor-ready financials and a credible financial model
• You're going through a transaction — an acquisition, a sale, or a recapitalization — and need experienced M&A finance support
• You've recently closed a PE investment and need to stand up institutional reporting quickly
• Your current finance function is a bookkeeper or controller, and you need someone to lead strategy

The fractional model works especially well for companies in the $2M–$30M revenue range — past the point where a bookkeeper is sufficient, but not yet at the scale where a full-time CFO is clearly justified.

When full-time makes sense

A full-time CFO becomes the right answer when:

• You're at $50M+ in revenue with complex, multi-entity financial operations
• You're preparing for an IPO or a major public-market transaction
• You need a CFO who is deeply embedded in day-to-day operations and available at all hours
• Your board or investors require a full-time finance executive as a condition of investment

For most growth-stage companies, that threshold is further out than they think. Many companies hire a full-time CFO at $15–20M in revenue when a fractional engagement would serve them better for another two to three years.

The hybrid model

A third option worth considering: a fractional CFO paired with a strong controller or accounting team. This is the model Scale Resource Group typically recommends for growth-stage companies — senior strategic leadership at the CFO level, combined with a full-service accounting function that handles the transactional and reporting layer.

It's the most cost-effective way to build a complete finance function, and it scales naturally as the company grows.

Making the decision

The right question isn't "fractional or full-time?" — it's "what does my finance function actually need to do, and what's the most efficient way to get it done?"

If you're not sure where your company stands, talk to the SRG team. We'll assess your current finance function and give you a clear recommendation — whether that's a fractional engagement with SRG, a full-time hire, or something in between.