A fractional CFO makes sense when you need strategic financial leadership but don’t have enough work to keep a full-time executive busy. Most businesses in the $2M to $25M revenue range fall into this category. You need someone who can analyze cash flow, build forecasts, guide major decisions, and talk to bankers. You don’t need that person sitting in your office 40 hours a week.

The trigger for hiring any CFO support is usually a specific situation. Maybe you’re planning to expand and need to understand what the numbers would look like. Maybe cash flow feels unpredictable even though sales are strong. Maybe you’re considering an acquisition or preparing for a bank loan. These moments require financial thinking that goes beyond what your bookkeeper or controller can provide.

Fractional works well here because these strategic needs come in waves. You might need heavy involvement during a growth initiative, then lighter touch during execution. A fractional CFO can scale hours up or down based on what’s actually happening in the business.

The cost difference is significant. A full-time CFO in South Florida typically costs $200,000 to $350,000 annually including salary, benefits, and bonus. Fractional CFO support runs $3,000 to $10,000 monthly depending on scope. For most growing businesses, that difference funds other priorities while still getting the strategic guidance you need.

Full-time makes sense when the volume of financial work requires daily attention. If you have multiple business units with separate P&Ls, complex capital structures, regular board reporting, or you’re preparing for a sale or IPO, you likely need someone dedicated. The question to ask is whether your CFO would have meaningful work every day or whether they’d spend half their time on tasks below their skill level.

Some businesses start fractional and transition to full-time as they grow. The fractional relationship helps you understand what CFO-level work actually looks like in your business. By the time you hire full-time, you know exactly what you need and can hire accordingly.

Watch for signs that you’ve outgrown fractional support. If you’re constantly wishing your CFO had more context on daily operations, if decisions are delayed because they’re not available, or if the strategic workload has become genuinely continuous rather than periodic, those are signals to consider a full-time role.

For professional services firms and similar businesses where operations are relatively straightforward, fractional support often remains the right answer well into the eight-figure revenue range. The complexity that demands full-time attention often comes from operational factors like inventory, manufacturing, or multi-location retail rather than revenue size alone.

The best approach is matching the level of support to your actual needs rather than defaulting to either extreme. Not every business needs a full-time CFO. Not every business can get by without any strategic financial leadership. Fractional fills the gap for companies that have outgrown basic bookkeeping but aren’t ready for another C-suite salary.