The real cost comparison
The fractional-vs-full-time question is really a question of how much CFO you need, and whether you can justify a full week of it.
| Fractional CFO | Full-time CFO | |
|---|---|---|
| Annual cost | $24,000-$180,000 | $250,000-$400,000 + equity |
| Equity | None | 0.5%-2% typical |
| Hours | 10-20/week | Full-time |
| Time to hire | 1-3 weeks | 2-4 months |
| Best for | <$15M revenue | $15M+ or pre-IPO |
When fractional wins
Below roughly $15M in revenue, most companies don't have 40 hours a week of CFO-level work. They have 10-15: a monthly close to oversee, a board deck, a forecast, a fundraise to support. Paying $300,000 plus equity for that is overbuying. A fractional CFO gives you the same strategic judgment for $50,000-$100,000 a year and starts in weeks, not months.
When full-time wins
At $15M+ revenue, approaching a major transaction, or preparing for an IPO, the work fills a week and then some — and you want a single owner in the building full-time, deeply embedded, building a finance team. At that point the equity grant and the salary are justified by the scope. A fractional CFO can even help you scope and hire that full-time successor.
The transition path
Many companies run a fractional CFO for 1-3 years, then graduate to full-time when the work and the stage justify it. The fractional CFO often builds the financial infrastructure, the reporting cadence, and the model that the full-time hire inherits — so the money spent fractionally isn't a detour, it's the foundation.