There is no single market rate. Fractional CFO companies price engagements in four common ways, and the same provider may use more than one:
- Monthly retainer — a fixed fee for an agreed cadence and deliverable set. Predictable, and the most common structure for ongoing work.
- Hourly — billed against actual time. Flexible for advisory support, harder to budget for.
- Project-based — a defined fee for a defined outcome such as a model build, a raise or systems implementation.
- Recurring part-time engagement — a set number of days or hours per month, closer to a fractional employment arrangement.
Whatever the structure, the fee is driven by the same underlying factors: company size, financial complexity, scope, hours and meeting cadence, industry, whether fundraising or M&A is involved, reporting requirements from lenders or a board, the maturity of your existing finance team, systems complexity, the number of legal entities, and any location or on-site requirement.
Ask each provider what is included at their quoted level, what sits outside scope, and how the fee changes if involvement increases or decreases.