Interim vs permanent CFO: how to decide

13 May

Ray Nicholls · 11 May 2026

When a CFO leaves — or when a business recognises it needs one for the first time — the immediate question is rarely about the brief. It's about the structure.

Do we hire permanently? Or do we bring in an interim?

Most businesses answer that question too quickly, and in doing so, create a second problem before they've solved the first.

Here is a clear framework for thinking it through.

What an interim CFO actually is

An interim CFO is an experienced finance leader who steps into a role for a defined period — typically three to twelve months — to stabilise, lead, or transform a specific situation.

The best interims are not people between permanent roles. They are specialists who have chosen the interim model deliberately. They have seen the inside of more businesses than most permanent CFOs will encounter in a career. They are deployed, not placed.

The key operational difference is speed. A credible interim CFO can be engaged and in the building within two weeks. No notice period. No induction runway. Day one competent in the situations that require them most — transactions, restructuring, leadership gaps, and finance transformation.

What a permanent CFO provides

A permanent CFO brings continuity, institutional memory, and long-term ownership of the finance function and its relationships.

For a business with stability — a clear strategic direction, a settled board, and time to run a thorough process — a permanent hire is the right answer. The right person, properly recruited, will outperform any interim over a three to five year horizon.

The challenge is the timeline. A well-run permanent CFO search typically takes three to six months from brief to start date. Add a notice period — often three months at this level, sometimes six — and the business may be without the right person for the better part of a year.

In a stable environment, that is manageable. In an urgent or complex situation, it is not.

When interim is the right answer

There are situations where interim is not a compromise — it is the correct structural response.

The business is mid-transaction. An acquisition, a refinancing, a fundraise, or a sale process requires CFO-level capability immediately. The permanent hire can follow once the transaction is complete and the business knows what it needs next.

The finance function needs stabilising. A sudden CFO departure, a breakdown in reporting, or an investor who has lost confidence in the numbers needs a fast, credible response. An interim provides it.

The brief isn't clear yet. Sometimes a business knows it needs a different kind of CFO but cannot yet articulate what that looks like. A well-chosen interim will often define that brief from the inside — a genuinely useful piece of work that the permanent search can build on.

The situation is time-limited. A specific transformation programme, a system implementation, or an integration project may require CFO-level leadership for a defined period without justifying a permanent hire.

When permanent is the right answer

Permanent hiring makes sense when the business has the time to do it properly, a clear brief, and a stable enough environment to absorb a transition period.

The most common mistake is hiring permanently under pressure. A board that has just lost a CFO, is facing investor scrutiny, or is mid-crisis will often reach for a permanent hire because it feels more decisive. It isn't. Speed and decisiveness are not the same thing.

A rushed permanent hire with the wrong brief produces the outcome described in our previous article on the cost of a bad CFO hire. The cost — financial, operational, and reputational — is rarely less than £500,000 in a mid-market business.

The sequencing approach

One model that works well, and is underused, is deliberate sequencing.

Bring in an interim to stabilise and lead the function in the short term. Use that period to define exactly what the permanent hire needs to look like — what situations they will inherit, what the investor expects, what the finance team needs from a leader. Then run the permanent search from a position of stability rather than urgency.

The interim has done their job when the permanent hire starts. That is not a failure of planning — it is good sequencing.

The question that frames it

Before any conversation about structure, we ask clients the same thing: what does this business need from its CFO in the next six months?

If the answer involves urgency, complexity, or uncertainty — interim.

If the answer involves continuity, relationship-building, and long-term ownership — permanent.

If the answer is unclear — that itself is the answer. Start with an interim and use the time well.

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Pitch Hill Partners is a boutique executive search and interim management firm specialising in CFO, Finance Director and senior finance leadership roles across the UK. To discuss a search, contact Ray Nicholls at raynicholls@pitchhillpartners.com

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