Key takeaways
- Succession planning means finding the roles you can’t afford to leave empty and developing people so they are ready to step into them.
- It is more than a list of names. Replacement planning names a backup. Succession planning builds a bench of successors at different readiness levels.
- The process has six steps: identify critical roles, define success profiles, assess talent, assign readiness levels, build development plans and review regularly.
- Development is where plans stall. Successors get ready through stretch work, mentoring, sponsorship and coaching, not a course alone.
- Measure readiness, not activity: bench strength, internal fill rate and retention of high-potentials.
What is succession planning?
Succession planning is the process of identifying critical roles and preparing employees to fill them, so that when a leader retires, leaves or is promoted, someone is ready to step in. A good plan covers more than the top job, and it treats developing people as the main work.
It is often confused with replacement planning, and many organizations that think they have a succession plan really have a replacement chart.
| Replacement planning | Succession planning | |
|---|---|---|
| Question | Who could cover this job tomorrow? | Who will be ready, and what will get them there? |
| Focus | One backup name per role | A bench of successors, with a pipeline behind them |
| Horizon | Now | Now through the next three to five years |
A leadership pipeline is the flow of people moving up through each level of leadership, and a leadership development program is one of the main ways to move them. This guide covers all three.
Why does succession planning matter?
Leadership gaps are costly and slow to fill, and most organizations aren’t prepared for them. When a key role opens with no ready successor, you face a rushed search, a long vacancy or promoting someone who isn’t ready.
- Most organizations have no formal plan. In a SHRM survey reported in 2024, only 21 percent of HR professionals said their organization had a formal succession plan, and 56 percent said it had none at all.
- Outside hires cost more and start slower. Research by Wharton’s Matthew Bidwell, reported in 2012, found external hires were paid about 18% to 20% more than internal staff promoted into similar jobs, got significantly lower performance evaluations for their first two years and left at higher rates.
- People leave when they can’t see a way up. A 2022 Pew Research Center survey found that 63% of US workers who quit a job in 2021 cited no opportunities for advancement as a reason.
A visible plan gives people on the bench a future worth staying for. See how mentoring helps improve employee retention.
The succession planning process, step by step
The succession planning process has six steps: identify critical roles, define success profiles, assess talent and find high-potential employees, assign readiness levels, build development plans and review the plan on a regular cadence. Start with a small set of roles, then widen the plan once the process works.
Step 1: Identify critical roles
Not every role needs a named successor. Rate each role on four questions:
- Impact: would a vacancy hurt revenue, customers, safety or a strategic priority?
- Scarcity: is the expertise hard to hire, or held by one person?
- Risk: is the incumbent near retirement, a flight risk or likely to be promoted?
- Time to fill: how long would it take to hire or develop someone?
Step 2: Define success profiles
A success profile describes what the role will need over the next three to five years, not only what the incumbent does today. Write it with the incumbent and their manager, covering the experiences a successor must have (owning a budget, leading through change), the capabilities they need (strategic thinking, financial acumen) and the behaviors that define how they lead. The profile becomes your yardstick for assessment and the source of each successor’s development goals.
Step 3: Assess talent and find high-potential employees
Assess candidates against the profile, and keep performance and potential separate. Strong results today don’t prove someone will succeed a level up. In a 2014 analysis, Gallup found that when companies name managers, they fail to choose the candidate with the right talent for the job 82% of the time.
Look for aspiration, learning agility, influence without authority and sound judgment. Combine manager ratings, 360-degree feedback and results from stretch assignments, then calibrate in a talent review, where leaders discuss candidates together, often on a nine-box grid of performance and potential. And ask employees about their goals: a successor who doesn’t want the role isn’t a successor.
Step 4: Assign readiness levels
For each critical role, list the candidates and how soon each could step in:
| Readiness level | What it means | Development focus |
|---|---|---|
| Ready now | Could take the role today | Transition planning and a sponsor |
| Ready in 1-2 years | Needs one or two key experiences or skills | A stretch assignment, a mentor who has held a similar role, coaching on gaps |
| Ready in 3-5 years | Strong potential, early on the path | Broad experience, a leadership program, rotations |
| Emergency cover | Could hold the role for a few months | A briefing on open decisions and key relationships |
Aim for at least two named successors per critical role so the plan doesn’t depend on one person. A role with no one ready now or in 1-2 years is a gap to close.
Step 5: Build individual development plans
Give every successor a short written plan: two or three goals tied to the success profile, each with actions and dates. Mix experiences (stretch assignments, acting in the role, a rotation), relationships (a mentor, a sponsor, coaching) and learning (a leadership program or courses). The successor owns the plan, their manager makes time for it and HR tracks progress.
Step 6: Review and update the plan
Plans go stale quickly. Have managers check development progress every quarter, hold a talent review once or twice a year to update readiness levels, and update affected roles after any resignation or reorganization.
How do you build a leadership pipeline?
To build a leadership pipeline, develop people at every level so the next level always has ready candidates. Succession planning fills specific roles; the pipeline makes sure there are enough people to choose from. Each step up asks for a different shift:
| Transition | What changes | What helps |
|---|---|---|
| Individual contributor to first-time manager | Success comes from the team’s work | A mentor who manages a team; practice for one-on-ones and reviews |
| Manager to manager of managers | Leading through other managers | A senior mentor; coaching on delegation |
| Senior manager to executive | Owning strategy and results across the business | Sponsorship; cross-functional stretch roles |
- Start early. Your directors in five years are among today’s first-line managers.
- Widen the pool. Add open applications to manager nominations so quiet high performers aren’t missed.
- Support transitions as they happen, not at the next program intake.
- Make developing others part of every leader’s job, and reward it.
What should a modern leadership development program include?
A modern leadership development program combines learning, practice and relationships over months, not days. It starts from the capabilities your future leaders need, spaces learning out, gives people realistic practice with feedback and pairs them with mentors and sponsors.
The research backs this design. A 2017 meta-analysis of 335 samples in the Journal of Applied Psychology found leadership training works best with a needs analysis, feedback, multiple delivery methods (especially practice) and spaced sessions. And the 70-20-10 rule, as the Center for Creative Leadership describes it in a 2025 article, holds that leaders develop through 70% challenging experiences and assignments, 20% developmental relationships and 10% coursework and training.
A sample 12-month program for high-potential employees:
| Months | Focus | What happens |
|---|---|---|
| 1 | Launch | Assessment against the success profile, a development plan, a mentor match |
| 2-4 | Learn | Cohort sessions every few weeks, plus practice of hard conversations with feedback |
| 5-9 | Apply | A sponsored stretch project, monthly mentor meetings, coaching between sessions |
| 10-12 | Show | Results presented to executives; readiness reassessed and the succession plan updated |
How mentoring, sponsorship and coaching get successors ready
Mentoring, sponsorship and coaching close the gaps courses can’t. Mentors pass on what only experience teaches about a role, sponsors open doors to the experiences a successor needs, and coaches help them build skills for specific moments. Most successors need all three.
| Mentoring | Sponsorship | Coaching | |
|---|---|---|---|
| What it does | Shares what the role really takes | Advocates for the person and puts them forward | Builds skills through questions, practice and feedback |
| Who gives it | A leader who has held the role or made the move | A senior leader with a voice in talent decisions | An expert coach, a manager or an AI coach |
How to pair high-potential employees with senior leaders
- Match on the target role: a leader who has made the same move, or who is strong in the successor’s biggest gap.
- Look outside the reporting line for a wider view of the business.
- Tie goals to the development plan, and meet monthly for six to twelve months.
A first meeting can follow a simple agenda: the mentor’s path and what surprised them in the role, the successor’s development plan and biggest gaps, two or three goals for the next six months, and how you’ll work together. For a full playbook, see how to start a mentoring program.
Coaching helps successors prepare for high-stakes moments, such as a first performance review as a manager or a presentation to the executive team. Expert coaching is costly, so it often goes only to senior leaders. AI coaching can extend practice and day-to-day support to the whole bench, with mentors and expert coaches for moments that call for a person. Read more on coaching vs. mentoring.
How do you measure succession readiness?
Measure succession readiness with a few numbers that show whether you could fill critical roles from within, and whether successors are getting more ready over time. Report them at every talent review.
| Metric | How to calculate it |
|---|---|
| Bench strength | Critical roles with at least one ready-now successor, divided by all critical roles |
| Readiness ratio | Successors ready now or in 1-2 years, divided by critical roles |
| Internal fill rate | Leadership roles filled internally, divided by all leadership roles filled |
| Time to readiness | Average time for a successor to move up one readiness level |
| High-potential retention | Retention of your high-potential pool, compared with the whole workforce |
Add one plain question for each critical role: would leaders appoint the ready-now successor tomorrow? If not, the rating or the plan needs work.
Common succession planning mistakes
Succession plans usually go wrong in one of five ways:
- Treating it as an annual form. A plan that changes once a year is out of date most of the year.
- Planning only for the top jobs. Gaps in specialist roles and first-line management often hurt first.
- Confusing performance with potential. Your best individual contributor isn’t always your best future manager.
- Naming successors without developing them. A name on a chart without a plan or a mentor is only a hope.
- Picking people like the incumbent. Clear success profiles and calibrated reviews widen the field.
Succession planning template and checklist
Record these fields for each critical role, and update them after every talent review:
| Field | What to record |
|---|---|
| Critical role | Title, team and location |
| Incumbent and risk | Likely timing of the vacancy and risk level |
| Success profile | Three to five must-have experiences and capabilities |
| Successors | Names and readiness levels |
| Development actions | Experiences, relationships and learning, with dates |
| Mentor and sponsor | Names for each successor |
| Next review | Date and owner |
Checklist:
- Critical roles agreed with the executive team
- A success profile for each critical role
- Candidates calibrated in a talent review
- At least two successors per role, with readiness levels
- A development plan, mentor and sponsor for every successor
- Bench strength and internal fill rate reported to leadership
How Rumi by Chronus helps develop successors
Rumi by Chronus brings AI coaching, mentoring and communities into one platform. In a succession plan, it supports the development work. Chronus’s view: AI coaching builds skills, mentors share experience, and growth takes both.
Rumi Mentor and Rumi Match
Somewhere in your company, someone has already solved the problem your successors are stuck on. Rumi Mentor matches them, guides the relationship and shows you it mattered. Its AI weighs a dozen factors, including goals, skill gaps, experience, availability, language and location, and every suggested match shows why. With Rumi Match, you can match on development goals, skills gaps or assessed job competencies, as well as job level. For example: Luis wants to lead a finance team. Rumi knows Ana made the same move last year. Luis is matched with Ana, a finance director.
Guided Conversations start every meeting with a plan and simple prompts, and Rumi flags a match that’s gone quiet before it fizzles out.
Rumi Coach
Rumi Coach reaches out to your people before the moments that matter and helps them rehearse high-stakes conversations with a character who pushes back. After every attempt, they get a readiness level, what went well and what to try next. When a moment calls for lived experience, Rumi Coach can connect an employee with a mentor who has faced the same challenge (if you also run Rumi Mentor) or with your expert coaches.
Readiness you can see
Rumi Coach measures readiness against your own criteria and shows where teams are strong and where to invest. Unified Insights ties mentoring to retention and promotion. You see participation and progress in aggregate, never anyone’s private conversations.
“It’s exciting that we’re able to match people with someone from their background – someone who can help them get prepared and guide them through their career.”
Tobias Olsen, Former Leader Development Program Manager, US Coast Guard Academy
- What are the steps in the succession planning process?
Identify critical roles, define a success profile for each, assess talent and find high-potential employees, assign readiness levels, build development plans and review the plan regularly. Most of the work is in developing successors once they are named.
- What is the difference between succession planning and a leadership pipeline?
Succession planning prepares named people for specific critical roles. A leadership pipeline is the broader flow of people developing at every level, from first-time managers to executives. A healthy pipeline gives the plan strong candidates.
- Should employees know they are part of a succession plan?
Talk openly with high-potential employees about their development, goals and the investment you are making in them, but don’t promise a specific role, because plans change. Silence has a cost too: people who don’t know they are valued may leave.
- What does succession planning software do?
Succession planning software helps HR teams list critical roles, run talent reviews, record readiness levels and track development plans. The software records the plan, but successors still have to develop. That is where mentoring and coaching come in: Rumi by Chronus, for example, matches successors with mentors who have made the move and gives them AI coaching and practice.
- How can mentoring prepare high-potential employees for leadership roles?
Mentoring gives high-potential employees access to leaders who have done the job: how decisions really get made and the mistakes to avoid. Match each successor with a senior leader who fits their target role, set goals tied to their development plan and meet monthly for six to twelve months. Pair it with sponsorship so readiness turns into real opportunities.
