How to decide whether to promote internally or hire externally

Promote from within when you have a person who meets the must-have requirements today, or can meet them with a short, defined plan, and when the role does not need skills the team lacks. Hire from outside when the gap is large, when you need a new skill or view, or when no one inside can do the job in a reasonable time. Either way, use the same criteria and the same steps for every candidate.

Why this decision is harder than it looks

Internal promotion feels safe because you know the person. External hiring feels fresh because you do not know the flaws yet. Both feelings are biased. You see the daily work of an internal candidate but not their potential at the next level. You see the interview answers of an external candidate but not their work in your setting. A good process lowers the weight of both feelings and raises the weight of evidence.

Step 1: define the role at the next level

A promotion is not a reward for the last job. It is a hire into a different job. Start with a clear role brief, and write the must-haves and nice-to-haves for the new role. Ask: what will this person do in the first six months that they do not do now? What decisions will they make? Who will they manage or influence?

Step 2: list the candidates and the evidence

Make a short list of internal candidates and a plan to find external ones. For each internal candidate, collect evidence against each requirement. For each external candidate, you will collect the same evidence through resumes or CVs, interviews and work samples.

Requirement	Evidence from internal work	Evidence from external process
Leads a small team	Led a project team, feedback from members	Examples from past roles, references
Plans a budget	Managed a project budget	Described a past budget, case exercise
Handles clients	Client emails, call notes	References, role play
Learns fast	Time to master recent tools	Examples in interview

Step 3: use the same process

Internal candidates should not skip the interview because you know them, and external candidates should not face extra hurdles. The same questions, the same scorecard and the same panel make the comparison fair. Our structured interview guide and interview scorecard give you the tools.

Be careful with prior knowledge. If you manage an internal candidate, you may hold opinions that are not based on the requirements. Ask another panel member, ideally from a different team, to score the candidate as well, and compare the scores.

Step 4: weigh the trade-offs

Factor	Favours internal when	Favours external when
Skills	The person has or can quickly gain the key skills	The key skills are missing inside
Time	You need someone in place soon	You can wait for a search
Culture and context	Deep knowledge of the product and customers matters most	A fresh view is needed to change direction
Team morale	Growth paths are important to the team	The team has been through many promotions already
Cost	You can fill the vacant role cheaply	The backfill cost is high or the gap is large
Risk	Performance is proven	The role is new and needs a different profile

No single factor decides. Score each factor from one to five for each option, and discuss the gaps. Avoid the trap of picking the option you already prefer and then finding reasons.

Step 5: count the full cost

A promotion leaves a vacancy. If you promote an analyst to manager, you still need an analyst. The cost of the promotion includes the backfill search, the training of the new person and the time the promoted person needs to learn the new role. An external hire costs search time, onboarding time and a learning period. Our guide on the cost to hire an employee covers the main items, and the cost of a bad hire shows what happens if the choice goes wrong.

Step 6: communicate with care

How you tell people matters. Internal candidates who miss out can feel hurt, and their reaction affects the team.

• Tell internal candidates early that the role is open and how the process works.
• Interview every internal applicant who meets the basic requirements. A courtesy interview with no real chance is unfair.
• Give written, specific feedback to those who do not get the job, with a development path.
• Announce the result to the team with a clear reason that links to the criteria.
• Support the person who gets the job with a plan for the first 90 days.

Fairness checks

Internal hiring can hide bias. Watch for these patterns.

• Only people in your own team get the chance to apply.
• The job is promised to someone before the process starts.
• Part-time staff, remote staff or people on leave never hear about the opening.
• Criteria are rewritten to suit the preferred person.
• Women, minority staff or older staff are passed over without clear reasons.

Discrimination law applies to promotions as well as to hiring. In the US, see the EEOC page on prohibited employment practices. In the UK, see GOV.UK employing people and the Acas recruitment guidance. In the EU, national equal treatment law applies, as in our EU equal treatment guide. Post internal vacancies where all eligible staff can see them.

A decision table you can copy

Question	Internal candidate	External option
Meets all must-haves today?
Can meet them within an agreed plan?
Time to productive in the role
Cost including backfill
Risk if it goes wrong
Effect on team

When a hybrid works

You can run the process in parallel: open the role to internal and external candidates, score everyone on the same scorecard, and choose the best fit. Or you can promote someone into a stretch role with a clear plan and a review date, and hire externally to cover the gap. Both options need honest talk with the person and a written plan.

Worked example (fictional)

A team lead leaves a customer support team of eight. The manager has two internal candidates: a senior agent who is liked by the team, and a quieter agent with strong quality scores. The manager writes the must-haves: coaching skills, planning shifts, handling escalations, and basic reporting. Both internal candidates and three external applicants complete the same structured interview and a shift planning exercise. The quiet agent scores highest on planning and reporting, the senior agent on coaching. The panel picks the senior agent with a development plan for planning skills, and gives the quiet agent written feedback and a stretch project. The team sees that the process was fair, and the manager has a record of the reasons.

How to assess potential, not only past results

Promotion decisions often rest on past results in the current job. The next job is different, so ask what evidence shows that the person can do the new work. Look for signs such as taking on tasks beyond the role, learning new tools fast, helping others succeed, and making sound choices under pressure. Use the potential-based interview guide to turn these signs into questions.

Be careful not to confuse confidence with ability. A person who speaks well in meetings is not always the best person to lead. A quieter person may do careful, steady work that suits the new role. Score each person against the written requirements, and ask for examples.

What to do when an internal candidate is close but not ready

Sometimes the person is almost there. You have three choices.

1. Promote with a plan. Write two or three goals, a mentor, a review date at 90 days, and clear support. Only choose this if the gaps are not safety or legal risks.
2. Offer a stretch role or an acting role for a fixed time, with a review. Make it clear in writing that it is temporary.
3. Say not yet. Give a clear development plan and a date to reconsider. Make sure it is honest and that you follow through.

Whichever you choose, write down the reasons in terms of the requirements. Vague reasons such as “not ready” or “not the right fit” are hard to act on and can hide bias.

Managing the effect on the team

A promotion changes relationships. The new manager used to be a peer. Others may have wanted the job. Prepare for this.

• Meet each unsuccessful candidate in private before the public announcement.
• Hold a short team meeting to explain the new structure and the reasons.
• Ask the new manager to meet each team member one-to-one in the first two weeks.
• Agree how the new manager will handle friendships and past conflicts.
• Check in with the team after 30 days and listen for problems.

The first 30 days onboarding guide also works for internal moves. Do not assume that a known person needs no support.

Using data without over-trusting it

Performance reviews, sales numbers and quality scores can help, but they have limits. They may reflect the quality of a territory, the mix of tasks or the opinion of a past manager. Use them as one input among several. If you use any automated tool to rank or screen internal candidates, check the rules where you work, keep a person responsible for the decision, and be ready to explain the result. People make the decision, and tools only support it.

Short checklist before you decide

• The role has written must-haves and nice-to-haves.
• All eligible internal staff knew about the opening.
• Internal and external candidates took the same steps.
• At least two people scored each candidate on the same sheet.
• The full cost, including backfill, is calculated.
• Feedback is ready for those who do not get the job.
• A 90-day plan is ready for the person who does.

Questions to ask the internal candidate

• What parts of the new role are you most ready for, and what is new to you?
• Tell me about a time you led others without formal authority. What was the result?
• What would you change in the team in your first 90 days, and why?
• Who would you want around you to cover your gaps?
• What support do you need from me to succeed?

Ask the same questions of external candidates, adapting only the context. Score all answers on the same one-to-five scale, with a note of the evidence. If the internal candidate gives a weaker answer than the external one, discuss it openly in the debrief rather than defaulting to what you already know. The debrief guide at interview debrief meeting shows a fair way to run that discussion and to record the decision.

Frequently asked questions

Is it better to promote from within?

Not always. Internal promotion helps morale and speed, but it can limit new ideas. Use criteria and evidence for every case.

Do I have to interview an internal candidate?

It is good practice, and often required by company policy. A fair, structured interview gives the person a real chance and gives you evidence.

How do I give feedback to an internal candidate who did not get the job?

Meet in person, say the decision first, give two or three specific reasons tied to the requirements, and agree a development step with a date.

Should we post the job externally if we already have a candidate?

If you have a strong internal candidate and a clear reason, you may fill the role internally. Make sure your policy and local law allow it and that other eligible staff had a fair chance to apply.

Related guides

• Hiring managers hub
• Replace a departing team member
• Employer guides

This is general information, not legal advice.