What an Unfilled Finance Seat Actually Costs
A vacant finance role is one of the few business costs that does not appear anywhere in the management accounts. The salary line shows a saving. The recruitment budget is untouched. Nothing in the reporting says the seat is empty — which is precisely why finance vacancies are tolerated for months in businesses that would never accept the same gap in sales or operations.
This is an attempt to put a number on it. Not a sales argument, but an honest accounting of where the cost actually falls when a Financial Controller, Finance Manager or Financial Accountant seat sits empty in a mid-sized business.
The four places the cost lands
The direct saving is real and it is the smallest part of the picture. Four costs run against it, and three of them are invisible.
1. Absorbed workload, at a higher rate
The work does not stop. It is absorbed — usually upward, by the Finance Director or the founder, and sideways by the remaining team.
That is the first and largest cost, and it is quantifiable. A Finance Director on an £130,000 package costs roughly £70 an hour fully loaded. If the vacancy pulls twelve hours a week of their time onto work a £75,000 Financial Controller would have done, the business is paying a premium of roughly £400 a week for the same output — while losing twelve hours of the work the FD was actually hired for.
Over a three-month vacancy that is around £5,000 of pure rate differential, and roughly 150 hours of displaced director-level work.
2. Deferred decisions
Harder to quantify and frequently larger. When nobody owns the numbers, decisions get made later or on worse information.
Pricing reviews slip. Capital expenditure is approved on instinct rather than appraisal. Cash flow is managed reactively. Covenant headroom is monitored quarterly in arrears rather than forecast forward. None of these produce an invoice, and any one of them can cost more than the salary of the person who would have prevented it.
The businesses that feel this most acutely are those in a growth or transaction phase, where the cost of a decision made badly is highest.
3. Control drift
Controls degrade quietly during a vacancy. Approval limits get bypassed because the approver has left. Reconciliations slip from monthly to whenever. Supplier bank detail changes go unverified. System access is not reviewed.
Most of the time nothing happens. When something does, it is expensive, and it is discovered by an auditor, an insurer or a bank rather than by the business. Our guide to internal controls for growing businesses covers what typically goes first.
4. The year-end tail
The cost that arrives months after the vacancy is filled.
A quarter of unreconciled balance sheet accounts becomes a longer audit, more adjustments, higher fees and more senior time. If the vacancy spans a year-end, add the cost of preparing statutory accounts externally that would otherwise have been done in-house, plus the audit overrun that follows an unprepared file.
In our experience this is the single most under-estimated component, because it is booked to audit fees rather than to the vacancy that caused it.
Putting a number on it
An illustrative three-month vacancy in a Financial Controller seat, in a business of £15m to £30m turnover. The figures are indicative and will vary considerably by business, but the shape holds.
| Component | Three-month effect |
|---|---|
| Salary saving (FC at £85k fully loaded ~£102k) | −£25,500 (a genuine saving) |
| FD/founder time absorbed at higher rate | £5,000–£8,000 rate differential |
| Displaced director-level work | ~150 hours not spent on commercial priorities |
| External accountancy support to cover gaps | £3,000–£9,000 |
| Audit overrun and additional fees (if year-end falls inside) | £4,000–£15,000 |
| Deferred decisions | Unquantified — frequently the largest |
| Net position | Frequently negative before deferred decisions are counted |
The point of the table is not the precise figures. It is that the saving is booked immediately and visibly, while the costs arrive later, land in different budget lines, and are never attributed back to the vacancy that caused them.
Why finance vacancies run longer than others
Three structural reasons, and recognising them helps.
The pain is deferred. A vacant sales seat shows up in the pipeline within a month. A vacant finance seat shows up at year-end, by which point the connection is no longer obvious.
The work is absorbable. A capable FD can hold a finance function together for a quarter. That is a strength and it is also why the vacancy is tolerated — the numbers keep arriving, so the urgency never registers.
And the replacement decision is genuinely hard. Businesses frequently use a vacancy to reconsider the shape of the role, which is sensible in principle and, in practice, adds weeks.
What this changes about the hiring decision
Two practical implications.
Speed has a value that should be priced in. If a three-month vacancy costs more than it saves, then a process that closes in six weeks rather than twelve is worth real money — and a candidate who is available now has a value that a marginally better candidate available in three months does not. That is a legitimate reason to compress a process rather than extend it.
And cover has a value too. Where a permanent search will genuinely take a quarter — which it will, at Financial Controller level with a three-month notice period — the question is not whether to cover the gap but whether the cost of covering it is less than the cost of the gap. On the numbers above, it usually is.
An interim Financial Controller at £450 to £600 a day for eight weeks costs £18,000 to £24,000. Set against a three-month vacancy in a business where the year-end falls inside it, that is frequently the cheaper option — and it removes the pressure to settle for a compromise permanent appointment, which is a separate and larger cost again.
Where the underlying requirement turns out to be less than full-time, one to three days a week of a fractional Financial Controller resolves it permanently at roughly half the fully loaded cost. Our readiness assessment works through whether that applies.
A short exercise worth doing
If you have a finance seat currently open, or one about to be, four questions give you the number.
Whose time is absorbing the work, and what does their hour cost? Multiply by the hours a week and the expected weeks.
What has been deferred since the seat became vacant? List it. The list is usually longer than expected and it is the part nobody writes down.
Does a year-end, audit or covenant test fall inside the vacancy? If yes, add the cost of preparing for it without the person who would have prepared for it.
And what is the realistic date the seat is filled? Six to twelve weeks to offer, plus one to three months’ notice. Businesses consistently underestimate this, and the underestimate is where the cost accumulates.
The answer to the fourth question is usually the one that changes the decision.
A Note from Adrian Lawrence FCA
The reason finance vacancies run long is that nothing in the reporting tells you they are costing anything — the salary line shows a saving and the audit fee arrives nine months later under a different heading. I have watched businesses tolerate a six-month gap in a Financial Controller seat while the Finance Director did the reconciliations at weekends, and then treat the resulting audit overrun as an unrelated problem. My suggestion to any business with a seat open now is to spend twenty minutes writing down what has been deferred since it became vacant. Not the work that has been absorbed — the decisions that have not been made. That list is the real cost, and it is almost always larger than the salary being saved.
Adrian Lawrence FCA is the founder of Accountancy Capital. He is a Chartered Accountant, holds an ICAEW practising certificate in his own name, and was previously Finance Director of a listed company. View Adrian’s ICAEW profile.
Related Recruitment & Guides
Accountancy Capital places permanent, interim and fractional finance professionals across the UK. Interim shortlists in 48–72 hours.
| Practice Area Filling the Seat Permanent appointments across the qualified finance function. → Financial Controller Recruitment | Covering the Gap Interim Support Full-time, finite cover while a permanent search runs. → Interim Financial Controller |
| A Different Shape Fractional Finance Where the requirement is senior but not full-time. | Protecting the Function Controls & Year-End What degrades during a vacancy, and what it costs later. → Internal Controls for Growing Businesses |
Every search is led personally by Adrian Lawrence FCA, Fellow of the ICAEW.
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Adrian Lawrence FCA is the founder of Accountancy Capital and a Fellow of the Institute of Chartered Accountants in England and Wales (ICAEW). He holds a BSc from Queen Mary College, University of London, and has over 25 years of experience as a Chartered Accountant and finance leader working with private, PE-backed and owner-managed businesses across the UK
He helps his clients achieve their growth and success goals by delivering value and results in areas such as Financial Modelling, Finance Raising, M&A, Due Diligence, cash flow management, and reporting. He is passionate about supporting SMEs and entrepreneurs with reliable and professional Chief Financial Officer or Finance Director services.