Fractional CFO fees typically range from $1,500 to $5,000 per month for ongoing engagement, or $150 to $400 per hour for project-based work. The wide range depends on what you need, how complex your business is, and how many hours the CFO will spend on your account each month.

Most fractional CFOs work on a monthly retainer. You’re buying a set number of hours and a defined scope of work. A smaller business needing basic financial strategy and quarterly forecasting might pay on the lower end. A company with multiple entities, complex job costing, or preparing for a sale or capital raise will pay more because the work requires deeper involvement.

Hourly arrangements work better for one-time projects like financial modeling, due diligence support, or building forecasting systems. If you need help with a specific problem rather than ongoing strategic guidance, hourly often makes more sense.

For context, a full-time CFO in the MetroWest or Greater Boston area typically earns $180,000 to $250,000 or more in salary alone. Add benefits, bonuses, and employer taxes, and you’re looking at $220,000 to $350,000 annually. At $3,000 per month, a fractional CFO costs $36,000 per year. That’s roughly 15% of what you’d pay for someone full-time.

The tradeoff is availability. A fractional CFO isn’t in your office every day. They’re working with multiple clients and dedicating a portion of their time to your business. For most small businesses, that’s actually enough. You don’t need a CFO forty hours a week. You need someone who can build budgets, analyze cash flow, guide pricing decisions, and help you understand what the numbers mean for your next move.

What should you expect at different price points? Under $2,000 per month usually means limited hours focused on specific deliverables like monthly financial review and quarterly forecasts. Between $2,500 and $4,000 per month typically includes more strategic involvement like cash flow planning, investor reporting, and deeper analysis. Above $4,000 per month usually means significant complexity or near part-time involvement.

Before hiring a fractional CFO, make sure your books are clean. Strategic financial guidance is only useful if the underlying data is accurate. If you’re still struggling with business bookkeeping and monthly closes, start there first. A CFO working from messy data is just making educated guesses.

The real question isn’t just “how much does it cost” but “is the cost worth it for where my business is now.” If you’re making decisions about expansion, pricing, hiring, or financing without clear financial visibility, the cost of not having strategic guidance often exceeds what you’d pay for it. If you’re still figuring out basic profitability and cash management, a fractional controller or solid bookkeeping foundation might be the right first step.