Fractional CFO vs controller

A controller looks backward with precision. A CFO looks forward with judgment.

The controller ensures the numbers are right: month-end close, reconciliations, revenue recognition, accounts payable and receivable, payroll accuracy, audit preparation, and compliance filings.

The fractional CFO decides what to do about those numbers: how long the runway is under three scenarios, what to charge, which segments to fund, when to raise, and what the board needs to hear.

Companies that conflate these end up with either accurate books and no strategy, or confident strategy built on unreliable data.

Controller scope: monthly close, journal entries, reconciliations, AP and AR, payroll, sales tax, financial statements, audit support, and accounting policy.

Fractional CFO scope: operating model, cash forecasting, scenario planning, pricing and unit economics, fundraising and diligence, board reporting, banking and debt, and building the finance team, including hiring the controller.

There is one overlap worth naming. Both can produce a monthly reporting pack, but the controller's version reports what happened while the CFO's version explains why and what changes next month.

• Bookkeeper: $1,500 to $4,000 per month, or outsourced from $500
• Fractional controller: $3,000 to $7,000 per month for 15 to 30 hours
• Full-time controller: $110,000 to $170,000 base, roughly $140,000 to $215,000 loaded
• Fractional CFO: $3,000 to $18,000 per month depending on hours
• Full-time CFO: $250,000 to $450,000 base plus equity

A common and effective combination under $10M ARR is an outsourced bookkeeper plus a fractional controller plus a fractional CFO at 15 to 20 hours, for a total in the $10,000 to $18,000 per month range. That covers the full stack for less than the loaded cost of one full-time CFO.

Answer five questions honestly.

1. Do you trust last month's numbers without checking them? If no, hire the controller first. 2. Is the close taking more than 20 days? Controller. 3. Are you raising capital in the next 9 months? CFO. 4. Is a pricing, margin, or capital allocation decision waiting on analysis nobody has done? CFO. 5. Has an investor, lender, or auditor questioned your reporting? Controller first, CFO immediately after.

If you answered yes to both a controller question and a CFO question, hire the controller first and the CFO within a quarter. Strategy built on unreliable books produces confident errors.

The typical finance build for a venture-backed company:

• Under $1M revenue: bookkeeper plus founder-owned modeling.
• $1M to $3M: bookkeeper plus fractional controller. Add a fractional CFO at 10 hours ahead of a raise.
• $3M to $10M: fractional CFO at 20 to 30 hours plus a full-time or fractional controller.
• $10M to $25M: full-time controller or director of finance, with the fractional CFO transitioning to advisory or converting full-time.
• $25M and up: full-time CFO with an FP&A team.

Services and physical-goods businesses tend to need the controller earlier and the CFO later than software companies at the same revenue.

Four to avoid:

• Hiring a CFO to fix a bookkeeping problem, which is expensive and usually fails because CFOs do not want to reconcile accounts.
• Hiring a controller and expecting fundraising support. Different discipline, different reference class.
• Promoting a strong controller into a CFO title without the strategic reps, then wondering why board conversations go poorly.
• Buying a bundled package from an accounting firm labeled CFO services that in practice provides a senior bookkeeper. Ask who does the work and what titles they have held.

Post a private mandate on RecruitFractional specifying whether you need close and controls or forecasting and capital strategy. Reference-verified fractional CFOs and controllers respond within 72 hours, and you can start with a paid 30-day trial before committing to a term.