Fractional CFO or interim CFO: what to choose?
Duration, availability, responsibilities and budget: compare a temporary mandate and part-time financial management.
Founding Partner and CFO, Iter Advisors
Remember in 30 seconds
An interim mandate specifies the cover and how it ends. A part-time arrangement provides recurring oversight. Compare availability and responsibilities before price; being external guarantees neither speed nor savings.
The term Fractional CFO designates the use of non-employee financial management. To compare the offers, distinguish above all the temporary mandate, often called interim or transition, from recurring part-time monitoring. The words used by a service provider are not enough to know their availability or their responsibilities.
1. Fundamental differences
A temporary mandate with a defined exit
A departure, an absence, a transformation or a hire in progress may require finance leadership cover. The engagement identifies the deadlines, the powers needed, the people to manage and the handover terms. A substantial presence may be required, but it does not automatically follow from the word "interim".
Also specify the intervention framework: the qualification of the contract, the delegation of signature and banking access must be examined with the competent professionals. The CFO coordinates the work within his mandate; the responsibilities of the other boards and the manager remain explicit.
Part-time recurring monitoring
A part-time CFO runs reporting, budgeting, cash scenarios and decision-making with management. The cadence depends on the work, the data and the team. A scheduled presence may be enough for some needs; lasting day-to-day management calls for a different set-up.
It is not a question of opposing a solution reserved for the crisis to a solution reserved for growth. A transformation can be prepared over time; a growing business may need a temporary back-up. The scope and availability determine the answer.
2. Comparison table
| Criterion | Temporary mandate / transition | recurring part-time |
|---|---|---|
| Objective | Relay, continuity or site with exit conditions | Regular management and review of decisions |
| Duration | Fixed in the mandate, with terms of extension | Duration and handover terms are agreed in the contract. |
| Presence | Defined according to load and deadlines | 1 to 8 days indicative monthly rates observed at Iter, without day package |
| Iter budget | €8,000 to €12,000 excluding tax per month, according to mandate | EUR 3,000–8,000 excl. VAT/month, according to scope and profile |
| Responsibilities | Mandate and written delegations to be specified | Works, validations and relays to be specified |
| Transmission | Planned from the framework with the successor | Documents and access organised to ensure continuity |
3. Costs and daily rate: compare what is included
A daily rate and a monthly rate do not necessarily cover the same work. Ask about the planned duration, availability, deliverables, travel costs and processing of an extension. Also compare accounting production, software and work kept in-house.
Example of fictitious calculation, without reference to a market price: a proposal at €1,000 excluding tax per day for 20 days represents €20,000 excluding tax before any costs explained in the quote. A fixed price proposal is examined on its deliverables and its exclusions. This calculation proves neither service equivalence nor savings.
At Iter, recurring monitoring covers a scope of work and seniority. The prices displayed are indicative ranges. The quote depends on the scope, seniority, data quality, tools, entities and expected availability. The monthly package covers an agreed scope, not a number of hours or days. The days indicated are observed averages. No excess is charged without a signed amendment. See the fractional CFO pricing and request a separate mandate for the transition. No average daily rate or firm commission is presented here as verified market data.
4. When to choose which one?
Examine a temporary relay
- A departure or absence leaves deadlines to meet.
- A construction site requires dedicated presence and responsibilities.
- A hire is under way and a handover needs organising.
Examine part-time
- Management needs regular reporting and forecasting.
- The team and the accounting firm produce the data, but the decisions remain to be prepared.
- The agreed pace covers decisions without requiring permanent daily presence.
List the decisions and the people to supervise, then compare the availability offered. An acquisition, fundraising or cash flow difficulty does not automatically impose a single format. Legal, tax and specialist advice remains mobilised depending on the situation.
5. Three illustrative scenarios, not customer cases
The following situations are fictitious. They describe selection criteria, without measured results, real budget or customer reference.
Departure during a banking negotiation
The manager identifies deadlines and documents, then examines a temporary relay with defined responsibilities. The mandate provides for continuity and handover to the successor. Acceptance of funding remains a decision of the parties involved.
SaaS with scattered indicators
Contracts, invoicing and reporting use different definitions of recurring revenue. A focused engagement can reconcile the data; part-time oversight can then prepare investor reviews. The offer Fractional CFO for startups and SaaS details this work.
Moving from interim cover to a lasting set-up
An interim engagement comes to an end. The team prepares procedures, assumptions and open items. Depending on the workload, the next step may be a hire, part-time support or bringing everything in-house. No handover route is presented as systematically better.
6. Prepare your decision
First define the need: deadlines, availability, responsibilities and output. The Interim CFO covers a temporary mandate; the part-time CFO provides recurring oversight. Iter offers both formats, subject to scoping and the availability of profiles.
Ask who is involved, what access is necessary, who validates the commitments and how the transmission will take place. The documented case Opti Digital illustrates structuring over time; it is not presented as an interim engagement or a repeatable result.
FAQ: Fractional CFO and interim CFO
What is the main difference between Fractional CFO and interim CFO?
"Outsourced" means using a professional who is not on the payroll. An interim or transition engagement covers a temporary mandate; a part-time arrangement meets a recurring need. Availability, responsibilities and how the engagement ends must be spelt out, rather than inferred from revenue alone.
What is the cost of an interim CFO?
The proposals are compared on the mandate, duration, presence and costs included. Iter presents its transition CFO missions between €8,000 to €12,000 excluding tax per month, depending on the scope. This range is that of the firm, not an average of the temporary agency market.
When should you choose an interim CFO?
A departure, an absence, a transformation or a relay during recruitment can justify a temporary mandate. The level of presence and necessary powers are examined with management; an emergency does not guarantee the immediate availability of a profile.
Can the Fractional CFO permanently replace an employee CFO?
Recurring support may be appropriate if its availability covers decisions and deadlines. A need for sustainable daily management can justify an internal position. The budget alone does not allow us to compare two different levels of availability.
Can we move from interim CFO to Fractional CFO?
Yes, recurring support can follow an interim engagement if the need evolves. You need to prepare the assumptions, authorised access, tools, open items and the people responsible for taking over. The switch is neither automatic nor always preferable to hiring.
Which model to choose for an SME?
List the decisions, the teams to manage, the deadlines and the availability required. Then compare a focused engagement, interim cover, part-time support and a salaried hire. No universal revenue threshold decides the right model.
Describe your organisation, your deadlines and how much presence you need. The first conversation qualifies the mandate; no proposal or start date is guaranteed before scoping. Describe my need for financial relay.
