Founders usually frame the CFO decision as a binary: hire a senior finance executive or keep doing it themselves. The middle path, an outsourced or fractional CFO, is where most growth-stage companies actually land, often without realizing it is a distinct option with its own economics. The question is not which choice sounds more legitimate on an org chart. It is which model matches your revenue scale, reporting obligations, and the complexity of what you are building.
Cost: retainer versus fully loaded salary
A full-time CFO at a venture-backed company typically carries a base salary between $250,000 and $400,000 depending on market, stage, and equity expectations. Add benefits, bonus, payroll taxes, and recruiting fees, and the first-year fully loaded cost often exceeds $350,000 before the person has finished learning your systems. An outsourced CFO engagement usually runs $8,000 to $20,000 per month for meaningful senior capacity, call it $96,000 to $240,000 annually, with no equity grant, no benefits load, and the ability to scale hours up or down as priorities shift.
The gap is not just cash. A full-time hire is a fixed cost with a long unwind if the fit is wrong. A fractional arrangement lets you test the working relationship through a board cycle or two before committing to a permanent search. That matters when you are not yet sure whether you need a strategic CFO, a hands-on controller-plus, or someone who can manage an eventual finance team you have not hired yet.
Capability and speed to hire
Annual cost (fully loaded)
Outsourced$96K–$240K retainer, no equity
Full-time$350K+ salary, benefits, and bonus
Time to start
Outsourced2–3 weeks
Full-time4–6 months (search + notice)
Weekly capacity
Outsourced10–25 hours, scales with need
Full-time40+ hours, fixed
Best fit
OutsourcedPost-Series A, team under 50
Full-timeMulti-entity ops, finance team of 3+
Full-time CFOs bring daily availability, deeper institutional knowledge over time, and the ability to own cross-functional initiatives that run for quarters. They are the right call when you have a finance team to manage, multiple entities or currencies, debt covenants, or M&A activity on the roadmap. Outsourced CFOs bring pattern recognition across dozens of companies at your stage. They have seen the same board questions, the same broken close processes, and the same vendor negotiations before, which compresses time to impact.
Speed to hire favors outsourced almost every time. A retained search for a full-time CFO routinely takes four to six months between kickoff and start date. A fractional engagement can begin in two to three weeks if you have done basic diligence on providers. When your Series A closed six months ago and your lead investor is already asking for a real forecast, that timeline difference is not academic.
When each model is the right call
Choose outsourced when you need senior finance leadership for 10 to 25 hours per week, when your team is under 50 people, or when you are building the function before you can justify a permanent seat at the table. Choose full-time when finance is a daily bottleneck across multiple departments, when you need someone accountable for a growing team of three or more finance staff, or when your investors and board explicitly expect a named executive in every leadership meeting.
Many companies sequence the two: fractional CFO to build infrastructure and survive the next fundraise, then a full-time search with a clear job description shaped by someone who already knows your business. That is not a compromise. It is a deliberate way to buy time without buying chaos.
The related operating work is Outsourced CFO.