Fractional CFO vs Financial Controller: Which Does Your Business Need?
A financial controller makes sure your numbers are accurate, closed on time and compliant. A fractional CFO uses those numbers to plan cash, set strategy and prepare you for growth or fundraising. If your books are messy, hire a controller first. If your books are fine but you can't answer "what happens next?", you need a CFO.
The two roles sit next to each other on the finance team. Many owners confuse them because both are senior and both look at the full set of accounts.
What a financial controller does
A controller owns the accounting function. The job is accuracy, control and compliance: making sure every transaction is recorded correctly and the reports can be trusted. The work looks at what has already happened.
Typical controller responsibilities:
- Month-end and year-end closing
- Financial statements: P&L, balance sheet and cash flow statement
- Accounting policies and internal controls
- Payroll oversight, accruals and reconciliations
- Tax, audit and regulatory compliance
- Supervising bookkeepers and accounting staff
A controller is the person who tells you whether the numbers are right. They usually do not decide what the business should do with them.
What a fractional CFO does
A fractional CFO is a senior finance leader who works with your company part-time. The focus is the future: cash, growth, funding and decisions. They rely on the controller's numbers to do it.
Typical fractional CFO responsibilities:
- Cash flow forecasting, including a rolling 13-week view
- Budgets, financial models and scenario planning
- KPIs and a monthly management report with a review
- Pricing, margins and unit economics
- Fundraising support: financial model, valuation and investor materials
- Relationships with banks, investors and advisors
The CFO answers the questions the controller's reports raise: why is cash falling while profit rises, what can we afford to hire, and when do we need to raise money.
Side by side
The controller asks "are the numbers right?" The CFO asks "what should we do with them?"
| Financial controller | Fractional CFO | |
|---|---|---|
| Main question | Are the books accurate and compliant? | Where is the business heading, and what should we change? |
| Time focus | Past and present | Future |
| Core output | Closed books, statements, reconciliations | Forecasts, models, KPIs, decisions |
| Cash | Records and reconciles cash | Forecasts cash 13 weeks and further ahead |
| Compliance and audit | Central to the role | Relies on the controller for it |
| Strategy and funding | Rarely part of the role | Core of the role |
| Manages | Accounting team and processes | Finance strategy, with the founder and board |
| Hire when | Reporting is late, messy or error-prone | Cash is tight, you plan to raise, or growth needs a plan |
Which one to hire at your stage
- Books are late, messy or untrusted: hire a controller (or a stronger accountant) first. A CFO can't plan from numbers you can't trust.
- Books are reliable, but cash is tight or the future is unclear: hire a fractional CFO.
- Preparing for an audit or your first compliance filings: a controller.
- Preparing to raise capital, expand or sell: a fractional CFO, with clean books behind them.
- Growing fast, or doing M&A: both. Complete Controller's guide suggests a hybrid, for example about 12 hours of CFO time and 25 hours of controller time a month in one ecommerce example.
- Small and stable: a bookkeeper or accountant may be enough for now.
You don't have to replace one with the other. The CFO sets what the business needs to see, the controller makes sure it is accurate, and the founder gets one clear picture.
What each costs
Both roles cost far less part-time than full-time. The figures below come from vendors that sell these services, so treat them as ballpark numbers and ask for a quote.
| Fractional | Full-time (salary, as stated by the source) | |
|---|---|---|
| CFO | $3,000 to $10,000 per month for 10 to 30 hours (Complete Controller); $3,000 to $12,000 per month on average (Pilot) | $237,983 per year (Complete Controller); more than $250,000 per year (Pilot) |
| Controller | $2,500 to $7,000 per month for 20 to 60 hours (Complete Controller) | $106,128 per year (Complete Controller) |
What moves the price: company size and complexity, how often you meet, how clean your books are, industry specialization and how well your tools are connected. For reference, John Galt Finance lists Essential Finance from €1,800 per month, with higher tiers quoted after scoping.
Not sure which you need?
A quick test: can you say, today, how much cash you will have in 13 weeks? If the answer is no and your books are in order, a fractional CFO is likely the next hire. If the books themselves are the problem, fix those first.
John Galt Finance provides fractional CFO services and works alongside your accountant or controller. Book a free call and we will tell you plainly which role fits your stage.
Sources
Pages opened on 2026-10-14. Both cost sources are published by firms that sell these services.
- Complete Controller: Fractional CFO vs Controller (role split, hybrid example, price ranges, salaries)
- Pilot: Fractional CFO cost guide (price range, price drivers)
- John Galt Finance (Essential Finance price)
