How to Hire a Fractional CFO

A fractional CFO provides senior financial leadership on a part-time basis, usually a few days each month. The model suits companies whose finances have outgrown a bookkeeper but do not yet justify a full-time chief financial officer. Common triggers include a late or unreliable monthly close, board demands for forecasting, and an approaching fundraise. Each requires strategic financial judgement without the cost of a permanent executive.

What a Fractional CFO Does Day to Day

A fractional CFO works part-time and often across several client companies. The work is strategic, not transactional.

Expected responsibilities include cash-flow forecasting and runway planning, budgeting and the financial model required for fundraising. The role also involves board reporting, oversight of the monthly close, accounting system selection and relationship management with banks, auditors and investors. Bookkeeping is excluded. The fractional CFO sets financial direction and controls reported numbers, while daily transaction entry is left to the finance team.

Signals You Need One: Fundraise, Audit, ERP Change, Controller Ceiling

An engagement usually follows a specific trigger rather than a general intention. Four are common:

• A fundraiser. Investors require a credible financial model, accurate figures, and a person able to present and defend both.
• An audit. A first audit, or a complex one, demands experienced preparation and oversight.
• An ERP or systems change. Migrating financial systems without senior control risks budget and timeline overruns.
• The controller ceiling. A controller maintains accurate records but is not engaged to set strategy or address investors. When the business requires both, a gap appears.

A single trigger justifies the engagement. Two occurring together indicate the need is overdue.

Cost: Monthly Retainer Ranges and Hourly Comparisons

Pricing varies with scope, sector, and location, though the structure is consistent. Most engagements use a monthly retainer scaled to the days committed.

The relevant comparison is with a full-time CFO of equivalent experience, not with a bookkeeper. On an hourly basis, a fractional CFO appears expensive, but the company pays only for the hours used, without a permanent salary, benefits, or equity. For a requirement of two days per week, the fractional model is materially cheaper.

Fractional CFO vs. Outsourced Accounting vs. Full-Time CFO

Three arrangements are frequently confused, and each addresses a different need.

• A fractional CFO provides part-time strategic leadership and owns financial direction.
• Outsourced accounting performs transactional work, including bookkeeping, payroll, and the close, but does not set strategy.
• A full-time CFO performs the strategic role of a fractional CFO with the addition of a permanent in-house presence, appropriate to larger or more complex organisations.

Outsourced accounting maintains the financial records; a fractional CFO determines financial strategy; a full-time CFO performs the strategic role where the organisation requires daily leadership. Many companies combine fractional leadership with outsourced accounting, a structure in which outsourced talent and talent as a service models increasingly overlap.

Scoping the First 90 Days

A defined scope from the outset is essential, and the first 90 days generally divide into three phases.

• Days 1 to 30, assessment. The CFO reviews the financial position, systems, cash, and immediate risks, and reports the findings.
• Days 31 to 60, correction and forecasting. Urgent gaps are addressed, and the forecasting and reporting the business lacks are built.
• Days 61 to 90, embedding. A repeatable process is established for the close, the board pack, and the cash review.

Priorities and deliverables should be agreed before the engagement begins. A fractional CFO retained for two days per month cannot function as a disguised full-time hire, and an unclear brief wastes the expertise being purchased.

How to Source and Vet One

The title is unregulated, and quality varies widely, so sourcing warrants care. Candidates are available through specialist fractional CFO services, through finance networks, and through referrals from investors or accountants familiar with the individual’s work.

Three criteria matter. 

• The first is a relevant stage and sector: experience scaling a SaaS business through Series B does not automatically transfer to a manufacturer. 
• The second is demonstrated results, evidenced by specific figures rather than description. 
• The third is compatibility with the founder, since the role involves challenging decisions and requires the standing to be heard. References should be requested and contacted.

Finance Staff Augmentation for the Rest of the Team

A fractional CFO cannot deliver the full finance function alone, and the model extends to supporting roles. Where the team is thin, finance staff augmentation supplies additional capacity, a financial analyst for modelling, an interim controller through a busy period, or an accountant to clear a backlog, without permanent recruitment.

This allows finance capacity to be scaled to demand. The fractional CFO sets direction; augmented specialists provide execution. For an organisation positioned between a bookkeeper and a full finance department, it is generally the most efficient structure.

To assess whether the model suits your stage, submit a fractional finance leadership enquiry. Our team will help scope the role, the days required, and the cost.

Frequently Asked Questions

How much does a fractional CFO cost?

Most engagements use a monthly retainer, commonly between $3,000 and $12,000, scaled to the days committed. Hourly rates generally fall between $150 and $400. The figure varies with scope, sector, and location, and should be compared with the loaded cost of a full-time CFO of equivalent experience.

When should a company hire a fractional CFO instead of a full-time one?

A fractional CFO suits companies requiring senior financial judgement but not a full-time appointment, typically around a fundraise, an audit, a systems change, or the point at which a controller’s remit no longer suffices. A full-time CFO becomes appropriate once finance grows complex enough to require daily in-house leadership.