Most owners ask the wrong question: "Are we big enough for a CFO?" Size is a weak signal. A $4M company with three entities, two currencies, and a bank covenant needs more financial leadership than a $12M company selling one product to one market.
The better question: Which decisions are we making without the numbers to support them?
What a chief financial officer (CFO) does that a bookkeeper does not
A bookkeeper records what happened. A controller makes sure it was recorded correctly and on time. A CFO uses those records to change what happens next.
In practice, CFO work is:
- Building the forward view — cash forecast, budget, scenario model
- Owning the relationship with lenders, investors, and the board
- Setting pricing, margin, and capital-allocation policy
- Designing the finance function itself: systems, controls, people
- Translating the numbers into decisions the CEO can act on
If none of this is happening, someone is doing it badly by default — usually the owner, at 11 p.m.
The six triggers
We see the same patterns across services, software, healthcare, and e-commerce businesses. Any two of these together is the signal.
1. Cash is a surprise. You learn the balance by logging into the bank, not from a forecast. Payroll weeks are tense.
2. Financials arrive late or get restated. Month-end takes more than ten business days. Prior months change after the fact. Nobody trusts the gross margin figure.
3. Outside capital is on the table. A term loan, a line of credit, an equity round, or an acquisition conversation. Each requires a financial story that holds up to scrutiny.
4. Structural complexity has crept in. More than one legal entity, a second currency, sales tax in multiple states, or payroll in two countries.
5. Pricing and hiring decisions rely on instinct. You cannot say what a new hire needs to bill to break even, or what a 5% price increase does to churn and margin.
6. The owner is the finance department. Every vendor payment, every payroll approval, every bank call runs through one person who also runs sales and operations.
A worked example
A $6M professional-services firm, 38 staff, one owner. Bookkeeping is outsourced and accurate. Yet:
- Utilization is tracked in a spreadsheet nobody reconciles to payroll
- The firm added a Canadian client and is now invoicing in two currencies
- The bank asked for a debt service coverage ratio and the owner did not know the figure
- Two senior hires were made in March; by August it was clear the revenue to support them was not there
None of these is a bookkeeping failure. They are all absences of financial leadership. A CFO engagement at roughly two days per month would have caught the hiring gap in the forecast before the offers went out.
Full-time or part-time
At $6M, a full-time CFO is usually premature — the fully loaded cost sits well above what the role returns at that scale. A part-time engagement covers the forward view, lender and board work, and finance-function design, and scales up as complexity grows.
The line moves with complexity, not revenue. Multi-entity, regulated, or venture-backed businesses cross it earlier. Single-product, single-market businesses cross it later.
What to do this quarter
- List the five biggest decisions you made in the last 90 days. Mark which had a number behind them.
- Ask your bookkeeper for the last three months' close dates. If any exceeded ten business days, note why.
- Write down your bank balance from memory, then check it. The gap is your cash-visibility problem.
- If two or more triggers above apply, price a part-time CFO engagement against the cost of one more wrong hire.