01
The obvious question
It is often framed as a choice between continuity and fresh perspective, or between loyalty and ambition: reward the person who knows the business, or bring in someone who has done it elsewhere.
02
The deeper decision
Framed that way, the decision becomes a referendum on a person or on a principle. The better starting point is the mandate: what must this role change, protect and build in the next chapter? Only then can internal and external options be weighed on equal terms.
An internal candidate brings known strengths and known limits; an external one brings unknown ones. Neither is safer by default. What matters is comparing the evidence each offers against the same future requirement.
03
What changes the answer
- How much must change
- The greater the required change, the harder it can be for someone shaped by the current system to lead it.
- Culture
- Some organisations reject outsiders; others need one to break a pattern.
- The internal bench
- One strong candidate and three plausible ones are different situations.
- Signals to the organisation
- Every choice tells people something about how careers and loyalty work here.
04
What most people underestimate
- The comparison problemInternal candidates are judged on their flaws; external ones on their presentation.
- Passing someone overThe cost of not choosing a respected internal candidate can be their departure — and others’.
- BenchmarkingEven when promoting internally, testing against the market sharpens the decision and the mandate.
- Onboarding insidersInternal appointees also need a transition — perhaps more, because nobody expects them to.
05
What evidence actually matters
What tends to persuade
- Years of service
- A preference for ‘one of our own’ or for ‘new blood’
- How strongly a candidate is liked
What tends to predict
- The same mandate applied to every candidate
- Evidence of each candidate’s growth across different contexts
- An honest view of what the internal candidate has never had to do
- Clarity on which risks each path asks you to accept
What persuades is not irrelevant. It simply tends to weigh more in the room than it deserves.
06
What to ask next
- 1What must this role achieve that has not yet been achieved?
- 2Are we judging internal and external candidates against the same standard?
- 3What would we lose if we passed over our strongest internal candidate?
- 4Would a benchmark against the market strengthen the internal choice?