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    Comparison

    Fractional CFO vs Full-Time CFO

    Quick answer

    A fractional CFO works part-time across multiple companies, delivering senior financial leadership at a fraction of the cost. A full-time CFO is a dedicated executive — essential at scale but hard to justify before you have the revenue to support it. Most companies need CFO-level thinking long before they can afford a full-time hire.

    Key differences

    AspectFractional CFOFull-Time CFO
    CommitmentPart-time — typically 1–3 days/weekFull-time employee with exclusive dedication
    Cost$3,000–$10,000/month$200,000–$400,000+/year in total compensation
    Best stageStartup through growth stage ($500K–$20M ARR)Late-stage or public company with significant financial complexity
    AvailabilityServes multiple clients; not exclusively available100% dedicated to your company
    Speed to startAvailable within daysMonths to recruit and onboard
    Institutional knowledgeBuilds gradually over the engagementDeep context after months of immersion

    When to choose Fractional CFO

    • You are pre-Series A through Series B and financial complexity has outgrown the founder
    • You need CFO-level thinking but cannot justify $200K+ in annual compensation yet
    • You are preparing for a fundraise in 6–12 months and need investor-ready financials
    • You want to scale the engagement up or down based on business needs
    • You need a financial co-pilot quickly — not after a 3-month hiring process

    When to choose Full-Time CFO

    • Your engineering and finance team is 10+ people requiring daily financial oversight
    • You have complex treasury, M&A, or multi-entity reporting that demands full-time attention
    • Your CFO needs to be in board meetings and investor calls on a weekly basis
    • You are post-Series B with consistent CFO workload that exceeds part-time capacity

    Bottom line

    Most startups and growth-stage companies need a fractional CFO long before they can afford a full-time one. If your ARR is under $5M or you are pre-Series B, fractional is almost always the smarter move — you get the same strategic expertise for 10–20% of the cost.

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    Fractional CFO vs Full-Time CFO: What's the Difference? | Expert Sapiens