The visible cost of a failed first CFO hire is straightforward. Severance, search fee, gap-fill cost. Most boards can name it within a few thousand pounds.
The invisible cost is roughly three times larger and hits the P and L for the following 18 months. Boards rarely name it because it is spread across too many line items.
Here is the honest breakdown for a mid-market business (£40m to £120m turnover) where a first CFO hire has failed inside 18 months.
The visible costs
Three items, straightforward to size.
Severance. For a CFO at this business scale, typically £75k to £150k depending on notice period served and any specific negotiated exit payment.
Search fee for the replacement. £45k to £85k depending on retained versus contingent structure and any interim bridge.
Interim CFO cover in the gap. Usually eight to twelve weeks at £1,200 to £1,800 a day. Call it £75k on average.
Total visible cost: £195k to £310k. Mid-point roughly £250k. This is the number most boards think about.
The invisible costs
Six items, each meaningful, most of which do not appear on the finance line.
Finance-team turnover in the following 12 months. New CFOs almost always trigger some second-tier turnover as they shape the team. If the first CFO also shaped the team differently, you get two rounds of turnover in 18 months. Direct hiring cost plus productivity loss typically £120k to £200k.
Delayed board decisions. The board runs slower for six to nine months while the CFO transition happens. Capex decisions get deferred. Hiring decisions get deferred. The commercial cost of that slower cadence is hard to size precisely but sits in the £150k to £400k range for most mid-market businesses.
Investor relationship reset. For PE-backed and VC-backed businesses, the investor relationship has to be rebuilt with a new CFO. Not just introductions, actual trust. It typically takes two full board cycles. The specific cost is opportunistic: a slower response on a follow-on funding conversation, a less confident position on a bolt-on acquisition. Rarely under £100k in blended cost.
Audit-relationship strain. New CFOs often trigger an audit tone shift. If the previous CFO managed the relationship well and the new one starts differently, audit hours increase. Roughly £15k to £40k on the next audit fee.
Working-capital drift. The single most under-appreciated cost. During the CFO transition, working-capital discipline slips. Receivables run longer, payables get paid faster. The cash impact on a £60m business through a 90-day transition period is typically £200k to £500k of temporarily-worse working capital.
Personal time cost on the CEO and chair. Both spend materially more time on finance-related conversations during the transition. Roughly 15 percent of a CEO's calendar for six months. At any credible loaded cost, this is another £40k to £80k.
Total invisible cost: £625k to £1.32m. Mid-point roughly £850k.
The honest total
Visible plus invisible: roughly £1.1m for a first CFO hire that fails inside 18 months at a £60m-turnover business.
The number surprises most chairs. It is genuinely three to four times the number they were carrying in their head.
Why the calculation matters
Two implications for the CFO hiring decision.
The premium of a properly-run process is small relative to the cost of a bad hire. The difference between a retained, thorough CFO search at £75k and a rushed, corner-cut search at £40k is £35k. If the thorough search reduces the bad-hire risk by even 10 percent, it pays for itself many times over.
The premium of an extra 2-3 weeks of process is even smaller. Boards routinely close CFO shortlists early because they want to lock in the preferred candidate. Two weeks of additional reference-checking and scenario testing on the final two candidates costs almost nothing and reduces the bad-hire probability meaningfully.
The maths on both is clearer once the £1.1m number is in front of you.
What we now recommend
For any first CFO hire at this scale, treat the search itself as a £1m-impact decision, not a £250k-impact decision. That reframes almost every subsequent choice about process, timeline, and shortlist thoroughness.
If you are approaching a first CFO hire and want to think through what "proper" looks like at your specific business scale, get in touch.
