How much does a fractional CFO cost?

The short answer: most fractional CFO engagements run on a monthly retainer sized to hours and scope, from a few thousand dollars a month for a light engagement to the low five figures for a heavy one. Hourly work typically runs a few hundred dollars an hour. Project-based work, like fundraise support, is scoped per engagement. Where you land in that range depends on hours, stage, and complexity.

Those are market ranges, not a price list. Every practice prices differently. But after years on both sides of the table, here is how the pricing actually works and what should drive your decision.

The three pricing models

1. Monthly retainer (most common)

A fixed monthly fee for a set number of days or hours per week. This is how most ongoing fractional CFO work is priced, because the work is ongoing: the forecast, the board pack, the budget cadence, the decisions that come up every week.

Typical range: a few thousand dollars a month on the light end, low five figures on the heavy end. A seed-stage company needing one day a week sits at the low end. A Series B company heading into a fundraise, needing two to three days a week plus board prep, sits at the high end.

2. Hourly

Best for bounded questions: a second opinion on a term sheet, a review of your model before the board meeting, help thinking through an acquisition offer. Typical range: a few hundred dollars per hour, with experienced operators at the top of that band.

3. Project-based

A fixed fee for a defined outcome: fundraise preparation, a board-ready forecast rebuild, M&A diligence support. Scoped up front, priced on complexity. A fundraise support project often runs in the low five figures; a full finance architecture build can run higher.

What moves the price

• Hours per week. The biggest driver. One day a week of steady-state work costs far less than three days a week through a fundraise.
• Stage and complexity. A single-entity SaaS company is simpler than a company with three subsidiaries, international payroll, and an active acquisition program.
• Experience of the CFO. A former Big Four controller going fractional charges less than someone who has run M&A at a bulge-bracket bank. You are paying for judgment, and judgment has a market price.
• Urgency. "We need the data room ready in three weeks" costs more than a planned quarterly engagement. Rush work always does.

The math founders should actually do

A full-time startup CFO costs several hundred thousand dollars a year in cash comp, before equity, benefits, and recruiting fees. Most seed to Series B companies need senior finance judgment about 20 to 40 percent of a full week.

A typical mid-range retainer lands well under six figures a year. That is roughly a quarter of a full-time hire, for the judgment you actually need. The question is not whether fractional is cheaper. It is whether you are buying judgment or buying hours. If you need judgment a few days a week, fractional wins. If finance is a daily operational load, hire full-time. (I wrote a separate guide on fractional vs. full-time timing.)

Red flags in pricing

• Prices far below market. A $1,500/month "CFO" is usually a bookkeeper with a title upgrade. Titles are cheap; judgment is not.
• Long lock-ins with no off-ramp. A reputable fractional CFO works month to month after an initial period. If someone demands a 12-month contract up front, ask why.
• No scoped proposal. "It depends" is fine on a first call. It is not fine as a pricing model. You should get hours, deliverables, and price in writing.

How to think about ROI

Do not evaluate a fractional CFO like a cost center. Evaluate the decisions they change. One avoided bad hire in finance, one fundraise where the numbers hold up in diligence, one quarter where burn comes in on plan instead of 30 percent over: any one of those pays for a year of the engagement.

The founders who get the most out of it are the ones who use the CFO as a decision partner, not a reporting function. If you want someone to make the board pack pretty, hire a designer. If you want someone who tells you the plan does not hold up before the board does, hire a CFO.