What is a fractional CFO?

A fractional CFO is a part-time Chief Financial Officer who takes ownership of a company's finance function — cash forecasting, financial planning, board reporting, fundraising strategy, and investor communication — while working across two to four companies at once. Unlike a bookkeeper or controller, a fractional CFO operates at the strategic and board level and typically has ten or more years of senior finance experience, often including a prior full-time CFO tenure.

Fractional CFOs are most valuable at three inflection points. First, when a company crosses roughly $1M in ARR or $2M in revenue and the founder can no longer own finance credibly. Second, when preparing to raise a Series A, B, or growth round — a fractional CFO builds the model, the data room, and the diligence narrative. Third, when a company is preparing for M&A, a debt facility, or an audit. Hire earlier than you think: most founders wait 6 to 12 months too long.

Typical scope includes: monthly close review and management reporting, a rolling 13-week cash forecast, an annual budget and quarterly reforecast, board deck financials, fundraising model and diligence support, unit economics and pricing analysis, vendor and banking relationships, and hiring the in-house finance team (controller, FP&A, AP/AR). A fractional CFO does not do bookkeeping — they manage the person who does.

Fractional CFO pricing typically falls in three bands. Advisory engagements at 10 to 20 hours per month cost $3,000 to $6,000. Standard fractional engagements at 20 to 40 hours per month cost $6,000 to $12,000. Deep fractional or interim CFO engagements at 40 to 80 hours per month cost $12,000 to $25,000. Day rates run $1,200 to $2,500. Equity is uncommon but does appear in early-stage engagements at 0.10% to 0.50%.

A fractional CFO is ongoing and part-time. An interim CFO is full-time but temporary, usually covering a maternity leave, a departure, or a pre-IPO ramp; interim rates run $15,000 to $35,000 per month. A full-time CFO commands $250,000 to $450,000 in base plus equity and only makes sense at roughly $10M+ ARR or post-Series B.

Scope the engagement first: how many hours per month, which deliverables, and which board meetings. Interview at least three candidates and require references from two prior fractional clients. Confirm the operator has run finance at your stage (early-stage SaaS is different from DTC or services). Start with a 30-day paid trial before committing to a longer term. On RecruitFractional every fractional CFO is background-checked, reference-verified, and reviewed by prior clients.

The five most common mistakes: hiring a career consultant with no operator experience; hiring at 5 hours per month expecting strategic output; skipping the reference check; failing to align the CFO with the CEO on cadence and reporting; and treating the fractional CFO as a bookkeeper. Each of these leads to a 3 to 6 month engagement that produces no material change.