5 min read
Ask a founder what a financial controller does and you’ll often get a vague answer: “someone senior in finance.” That’s not wrong, but it’s not much help if you’re trying to work out whether your growing business actually needs one, or what you’d be hiring them to do.
The core of the Financial Controller role
The role sits above a management accountant or finance manager, and typically below a finance director or CFO, as ICAEW’s own career guidance sets out. The core job is straightforward to state even if the day-to-day is broad: they own the accuracy, timeliness, and integrity of everything your business reports, and they manage the team that produces it.
The job of a financial controller usually covers running the month-end close, so your management accounts land on time and reconcile properly. It means overseeing the accounting team, whether that’s an internal bookkeeper, an outsourced provider, or both, and making sure the numbers they produce are correct before anyone else sees them. It includes VAT returns, payroll oversight, and getting year-end accounts filed with Companies House on schedule rather than at the last possible moment. And it means building and maintaining internal controls, the checks that catch errors and prevent fraud slipping through unnoticed once a business has grown past the size where one person can be across everything.
In practice, a lot of this work is invisible when it’s done well. You only really notice the gap when it’s missing: numbers that don’t reconcile, reports that arrive late, or a year-end that turns into a scramble because nobody owned the process month to month. Good financial control is the kind of thing that only becomes visible in its absence, which is part of why the role is often underrated until a business has already felt the cost of not having it.
What it doesn’t cover
What this person typically doesn’t do is set financial strategy. They’re not usually the one modelling three growth scenarios for a board meeting, negotiating a funding round, or advising on whether to expand into a new service line. That forward-looking, commercial layer is usually the domain of a finance director or a fractional CFO, working from the accurate base that’s already been built. Founders often only discover this distinction after hiring for the wrong role, ending up with someone highly capable at the operational side but, understandably, less equipped for that kind of strategic conversation.
Qualifications for a Financial Controller
Most people in this role are qualified accountants, typically ACA, ACCA, or CIMA, with several years of hands-on experience closing monthly accounts before stepping into the position. That professional grounding matters because the job carries real responsibility for numbers that feed into tax filings and lender covenants. It matters even more if a sale or funding round is on the horizon: buyers and investors expect controller-reviewed financial history built up over time, not assembled retrospectively once due diligence has already started.
When a growing business actually needs one
Most agencies and service businesses don’t need this level of oversight from day one. It tends to earn its place once the finance function has outgrown a single bookkeeper, when monthly management accounts have become non-negotiable rather than a nice-to-have, or once a growing team means the controls that worked at five people start to creak at twenty-five. Below that point, outsourced support usually covers the same ground more flexibly and at lower cost. Above it, having someone dedicated to getting the fundamentals right becomes the backbone that lets a finance director or fractional CFO focus on strategy rather than chasing reconciliations themselves.
Part-time help can work well
There’s also a middle ground worth naming. Many growing businesses bring in a financial controller on a part-time or fractional basis, well before they need or can justify a full-time hire. The controller focuses on the highest-value work, closing the management accounts, reviewing reconciliations, overseeing the team’s output, while day-to-day processing stays with a bookkeeper or outsourced provider underneath them. It’s often the natural next step once outsourced support alone starts to strain, and the point where having someone dedicated to the fundamentals starts to free up a finance director or fractional CFO to focus on strategy rather than chasing reconciliations themselves.
ACC CFO Perspective
Our view is that the financial controller question is really a proxy for a bigger one: what level of financial oversight does your business actually need right now, not in eighteen months’ time? Plenty of founders default straight to hiring a finance director because the title sounds more senior, when what they actually need first is someone making sure the basics are watertight before anything more strategic can be built on top. Getting that sequencing right saves both money and frustration further down the line.
Getting the sequencing right
Knowing what the role covers won’t tell you whether you need one this quarter or next year, but it does mean you’re asking the right question rather than guessing at a job title. For a closer look at vetting senior finance hires once you get there, see our guide on How to Hire a Fractional CFO. That distinction, more than the title itself, is usually the harder part to get right. If you’d like a conversation about your situation, please contact us online or call 0207 307 5922 to speak with a CFO.
Frequently Asked Questions about the role of a Financial Controller
What’s the difference between a financial controller and a finance director?
A financial controller is primarily operational, responsible for accurate reporting, compliance, and internal controls. A finance director sits above that, typically owning financial strategy, board reporting, and commercial decision-making.
Does a small agency need a financial controller?
Not usually at the outset. Businesses below the point where a single bookkeeper can keep pace, often once monthly management accounts and internal controls become essential, tend to get better value from outsourced support until that threshold is reached.
What qualifications do financial controllers typically have?
Most hold a professional accounting qualification such as ACA, ACCA, or CIMA, alongside several years of experience managing month-end close and reporting processes before stepping into the role.
Is a fractional CFO a replacement for a financial controller?
No, they serve different purposes. A fractional CFO provides strategic, forward-looking financial leadership, while a financial controller ensures the operational reporting and controls that leadership relies on are accurate and timely.
This article is intended for general information and does not constitute legal, tax, or financial advice. Every business is different, and founders should take appropriate professional advice based on their specific circumstances.
About ACC Finance
ACC Finance are a team of experienced fractional CFOs and management accountants who combine executive financial leadership with practical commercial judgement to work closely with founders and leadership teams to strengthen margins, improve cash flow, and guide critical financial decisions.
