Why a £1.2bn Business With Its Own CFO Still Called Us In

There’s a persistent assumption that fractional CFOs are for companies that can’t afford a real one.

That a fractional engagement is a stepping stone — something you use until you’ve grown enough to hire the proper, permanent version.

It’s a tidy story. And often it’s true — plenty of growing businesses use us exactly that way.

But it’s only half the picture.

Some of the most valuable work our practice does is inside businesses that already have a strong, fully-staffed finance function. Often led by an excellent full-time CFO. The fractional CFO isn’t there to replace any of them. They’re there to do the one thing an internal team structurally cannot.

Be independent.

Right now we’re running exactly this kind of engagement. An international environmental services group — waste management and recycling — backed by a major European private equity house. Group revenue north of a billion pounds. A capable in-house finance team across multiple sites.

The mandate from the sponsor: come in from the outside, interrogate the budgets across every site, and find 10% of cost to take out.

Notice what that mandate is not. It isn’t “help the finance team.” It’s “be the person the finance team can’t be.”

Why an internal team can’t do this on its own

Ask a site finance director to challenge their own site’s budget and you’ve created an impossible position. They built that budget. They sit in meetings with the people whose costs are in it. They’ll be there long after the review is over. The relationships, the loyalties, the quiet politics — all of it pulls in one direction, and it isn’t towards a 10% cut.

This isn’t a competence problem. The best internal finance team in the world still answers to the same colleagues every Monday morning. Independence isn’t something you can ask people to summon against their own incentives.

A fractional CFO brought in for a defined project has none of that baggage. No history with the numbers. No relationship to protect. No job on the line for asking the uncomfortable question in the room. That freedom — the freedom to say “this budget doesn’t hold” without fear — is the entire point.

What you actually get

Short-term, project-shaped work like this tends to share three features:

It’s time-boxed. The engagement has a start, a mandate and an end. We’re not embedding for years; we’re delivering a specific outcome and handing it back to the team that runs the business day to day.

It’s additive, not disruptive. We work alongside the existing finance function rather than over it. The full-time CFO keeps running the business. We take the high-stakes, politically-charged piece that would otherwise consume them — or that they genuinely can’t do from the inside.

It’s senior from day one. Zero-based budgeting across multiple sites in a billion-pound group isn’t a learning exercise. You’re paying for someone who has interrogated budgets at scale before and knows where the costs actually hide.

When this makes sense

You don’t need to be PE-backed for this to apply, though sponsors mandate it more than anyone. The pattern repeats whenever a business needs financial work that is either too sensitive, too specialised, or too temporary to sit naturally inside the permanent team:

A sponsor wants an independent challenge to management’s numbers. A cost-out programme needs someone with no stake in the outcome. A systems overhaul or post-acquisition integration would swallow the CFO’s attention for six months. A one-off piece of M&A or fundraising work needs hands that have done it many times before.

In every case, the question isn’t “do we have a finance team?” You do. The question is whether the thing in front of you is best done by the people who run the business every day — or by someone brought in precisely because they don’t.

A good full-time CFO knows the difference. The best ones are the first to ask for the outside voice, not the last.

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WrightCFO is currently running independent, group-wide budget interrogation for a PE-backed environmental services group, targeting a 10% cost reduction across sites — delivered alongside the in-house finance team. If you’re weighing up a short-term, high-stakes finance project and wondering whether it belongs inside or outside your team, that’s exactly the conversation we like to have.