How Much Does a Fractional CFO Cost?
What a fractional CFO actually costs for operating companies between $5M and $70M. Engagements run from about $3,500 to $45,000 per month — the real drivers are team configuration and engagement length, not revenue.
The honest answer: it depends. The useful answer takes the rest of this page to give properly. This guide is for owners and senior executives at operating companies between $5 million and $70 million in revenue who want to understand fractional CFO pricing before they pick up the phone.
Engagements run from about $3,500 to $45,000 per month.
The range is wide because the work is wide. At the low end, a small number of fractional CFO hours each month to support a defined set of decisions. At the upper end, a full team — CFO, Controller, accounting staff — embedded several days a week, often with active transaction work behind it. Most engagements land somewhere in the middle.
The two biggest drivers are the team configuration and the length of the engagement. Company revenue matters too, but it's a heuristic, not the answer — a $10M business with M&A in flight will cost more than a $40M business with clean books and one strategic question pending. A 30-minute call will get you a range tailored to your situation.
Five variables, ordered by impact
Time — and whose time
Time is the biggest driver of price. But the more important question is whose time.
Most fractional CFO firms bill the assigned CFO's rate for everything the CFO touches — including reconciliations, journal entry approvals, AR follow-up, and operational accounting that doesn't actually require CFO-level judgment. You end up paying premium rates for work that should never have been priced that way.
We don't. Vessel deploys a team — CFO, Controller, accounting staff — under senior oversight, and pushes work down to the appropriate level. You pay CFO rates for CFO-level work, Controller rates for Controller-level work, and accounting staff rates for staff-level execution. In a typical engagement, the CFO is engaged one to three days a week on the strategic and decision-support layer. The Controller and staff handle the operational layer alongside. The total cost of that team is frequently less than what a single-CFO competitor charges for a solo CFO with no support — because their CFO has to do the operational work themselves, and you pay top rates for it.
This is also why a team of CFOs beats a single fractional CFO on more than just delivery quality. The economics favor the team model, too.
The roles required
Most engagements involve more than one role. A standalone fractional CFO is the right answer for some businesses. Many need a fractional Controller too — someone making sure the accounting operations work correctly so the CFO has reliable numbers to act on. Some need a small accounting team underneath both. The right configuration depends on what your business already has internally and what kind of work needs to get done.
Company size and complexity
Revenue is a starting heuristic but not the answer by itself. A $25M business with one location, one entity, and one product line is materially simpler than a $25M business with three entities, four locations, and dual revenue models. The work scales with complexity, not just dollars.
Transaction context
When the business is approaching an M&A event, working with a private equity sponsor, preparing for an institutional capital raise, going public via a SPAC, or running a turnaround, transactional work materially increases scope, intensity, and pricing. We've taken operating companies through each of these paths. Engagements with active transaction context typically sit in the upper half of the range.
Industry
Some industries require deeper specialization than others. Construction needs percentage-of-completion accounting, surety relationships, and bonding capacity. SaaS and technology need ARR mechanics, ASC 606 revenue recognition, and unit economics. Real estate, manufacturing, ecommerce, and professional services each carry specific knowledge requirements. Industry-specific finance leadership sometimes costs more than generalist work, but it's also more likely to actually solve the problem.
What engagements often look like at different sizes
Revenue is a rough proxy for the kind of work involved. Real pricing for any given business depends on the team configuration and length of engagement.
Building the finance function
Growing past the bookkeeper-plus-CPA setup. Owner needs decision support and reliable forecasting. Often the first time a real finance function is being built.
Strengthening a stretched team
Lenders and possibly board involvement. Existing accounting team is structurally underpowered. PE conversations starting to happen.
CFO function at decision scale
Real lenders, often PE at the table. Conversations about sale, recap, acquisition, or institutional capital. Full-time-CFO comparison is realistic.
Above $50M, the conversation increasingly depends on transaction context — PE sponsor work, public-readiness preparation, multi-entity consolidation, or strategic acquisition support — and whether the engagement is moving toward a permanent CFO hire.
What you're paying for
Decision support
Whether a particular acquisition, capital raise, hire, or expansion is the right call — and what the numbers actually say about the trade-offs.
Operational visibility
Knowing what's actually happening inside the business in time to do something about it. Most owners we work with have a strong intuitive sense of what's going on; what they're missing is the data infrastructure to verify it.
Cost discovery and recovery
Surfacing where money is leaking — pricing errors, vendor inefficiencies, tax overpayments, working capital traps. Our Financial Discovery Assessment frequently identifies more dollar value than the engagement costs before the engagement is done.
Team capability
Building the people you already have. We don't replace your accounting team — we make them more effective. More on how we develop the team you have.
Many engagements begin with the Assessment. Not all.
Many engagements begin with a Financial Discovery Assessment — a fixed-fee diagnostic that gives both sides a clear picture of what the business actually needs. Pricing for the ongoing engagement is scoped from that.
Some engagements skip the Assessment entirely. When the scope is already defined — an interim CFO during a transition, M&A diligence support, PE sponsor onboarding, a turnaround mandate, or a specific finance modernization initiative — we scope to that need directly.
Ongoing engagements are typically monthly. There's no long-term commitment to start.
Related Reading
More on what a real finance function does.
What is it costing you right now not to have this in place?
Most of the businesses we've worked with were losing more — through bad pricing decisions, vendor inefficiencies, working capital traps, missed acquisition opportunities, or simply lack of visibility — than the engagement ended up costing. The CFO function isn't an expense line. It's a profit lever that most growing businesses underuse.