What Is Succession Planning? A Plain-English Guide

What is succession planning?

Succession planning is the ongoing process of identifying the roles your organization cannot afford to leave empty, finding the people who could step into them, and developing those people so they are ready before the seat opens. It answers one practical question: if this person left tomorrow, who would take over, and how ready would they be?

The U.S. Office of Personnel Management’s training wiki puts it this way: succession planning is a proactive and systematic process in which organizations identify the positions at the core of the organization, those “too critical to be left vacant or filled by any but the best qualified persons,” and then create a plan to fill them with experienced, capable employees (OPM). That definition carries three ideas worth keeping in mind for the rest of this guide.

• It is proactive. The work happens before a vacancy, not after a resignation letter lands.
• It is systematic. It follows a repeatable process with clear criteria, not a list kept in one executive’s head.
• It focuses on critical positions. Not every role needs a named successor. The roles that matter most get the most attention.

A plain-English version

Think of succession planning as insurance plus investment. The insurance part protects the business from disruption when a leader or key expert leaves, retires, gets promoted or becomes unavailable. The investment part builds people: it gives capable employees a visible path, targeted development and real experience so they grow into bigger jobs.

A succession plan is the output of that process. For each critical role, it typically names the incumbent, lists one or more potential successors, rates how ready each successor is, notes the gaps they need to close, and records the development actions that will close them. Good plans also note the risk of the incumbent leaving and the risk of losing the successors themselves.

Succession planning is not just for the CEO

Many people hear “succession planning” and think only of CEO transitions. CEO succession matters, and boards typically oversee it, especially in public companies. But the same discipline applies to the plant manager who knows every quirk of a production line, the head of a regional sales team, the only engineer who understands a legacy billing system, or the finance director who manages lender relationships.

In practice, organizations get the most value when they plan succession for a defined set of critical roles across levels, not just the top box on the org chart. This guide covers that broader view: what succession planning involves, why it matters, which roles need it, how the process works step by step, who owns it, the most common mistakes, and how to tell whether it is working.

Why succession planning matters

Succession planning matters because leadership and expertise gaps are predictable, expensive and slow to fix once they appear. The evidence points the same way from several directions: an older workforce, the cost of external hiring, the cost of turnover and a long record of boards being caught unprepared.

1. Retirements are a when, not an if

In December 2010, Pew Research Center noted that starting January 1, 2011, roughly 10,000 baby boomers would reach age 65 every day for the next 19 years (Pew Research Center). That window runs through 2029, so many organizations are in the middle of it now.

Older employees are also staying in the workforce longer, which can hide the risk until it arrives all at once. Pew reports that about 19% of adults ages 65 and older are employed, up from 11% in 1987, and that the older workforce has nearly quadrupled in size since the mid-1980s (Pew Research Center, 2023). U.S. Bureau of Labor Statistics projections show workers 65 and older rising from 6.7% of the labor force in 2023 to a projected 8.6% in 2033 (BLS).

For succession planning, the takeaway is simple. Many of your most experienced people hold knowledge that is not written down, and some of them will leave on a timeline you can roughly predict. A plan turns that predictable risk into a managed transition.

2. Filling key roles from outside costs more and often performs worse

When there is no internal successor, the default is an external search. Research by Wharton professor Matthew Bidwell found that external hires were paid roughly 18% to 20% more than internal employees promoted into similar jobs, received lower performance evaluations in their first two years, and had higher exit rates (Knowledge at Wharton). The same research notes that external hires take about two years to get up to speed.

That does not mean outside hiring is wrong. Sometimes a role needs skills no internal candidate has. But succession planning gives you a real choice instead of a forced one.

3. Losing people is expensive

Gallup estimates that replacing an individual employee can cost from one-half to two times that employee’s annual salary, and that voluntary turnover costs U.S. businesses about $1 trillion a year (Gallup). The same Gallup analysis found that 52% of voluntarily exiting employees said their manager or organization could have done something to prevent them from leaving.

Succession planning reduces this cost in two ways. It shortens the gap when a critical role opens, and it gives high-potential employees visible growth paths, which is one of the things that keeps them from looking elsewhere.

4. Boards and executives are often less prepared than they think

The research on CEO succession is a useful warning for every level of the organization. A 2010 survey by Heidrick & Struggles and Stanford’s Rock Center for Corporate Governance found that more than half of companies could not immediately name a successor to their CEO, that 39% had “zero” viable internal candidates, and that boards spent on average only two hours a year on CEO succession planning (Stanford GSB).

A separate 2014 study by Stanford and the Institute of Executive Development on senior executive succession found that only 46% of respondents had a formal process for developing successor candidates for key executive positions. Only 25% agreed there was an adequate pool of ready successors for the CEO role, even though half of boards believed they had an effective succession plan (Stanford GSB, 2014).

Regulators have treated the issue as a governance matter for years. In 2009, the U.S. Securities and Exchange Commission’s staff wrote that “one of the board’s key functions is to provide for succession planning” and that CEO succession planning “raises a significant policy issue regarding the governance of the corporation” (SEC Staff Legal Bulletin No. 14E).

5. The right leaders shape everyone else’s work

Succession decisions do not only affect the person promoted. They shape the experience of every team that person will lead. Gallup estimates that managers account for at least 70% of the variance in employee engagement scores across business units, and that companies miss the mark on high managerial talent in 82% of their hiring decisions (Gallup).

A structured succession process, built on evidence about performance, potential and readiness, is one of the most direct ways to raise the odds that the next leader in a seat is the right one.

Succession planning vs. related practices

Succession planning overlaps with several other people practices, and mixing them up leads to plans that are too narrow or too vague. The table below separates them by the question each one answers.

Replacement planning is a subset, not a substitute

Replacement planning names a backup. It is useful, especially for emergencies, but it stops at the name. Succession planning goes further: it asks whether the backup is actually ready, what they lack, and what the organization is doing about it.

A company with a full replacement chart and no development plans has a list of hopes. A company with fewer names but clear readiness ratings and active development plans has a pipeline.

Emergency succession is its own discipline

An unplanned exit, such as a sudden resignation, illness or death, needs a short-term playbook that a long-term succession plan does not cover by itself. That playbook defines who activates the plan, who serves as interim, what decisions the interim can make and how the change is communicated. BullseyeEngagement’s guide to emergency succession planning walks through that playbook in detail.

Workforce planning sets the context

Workforce planning looks at the whole organization: future headcount, skills and costs. Succession planning zooms in on a short list of critical roles within that picture. The two work best together, because the roles that matter most can change when strategy changes. Bullseye’s Workforce Planning solution page covers that broader planning layer.

Ownership succession is a different problem

In small and family businesses, “succession” often means transferring ownership. That involves legal structures, tax planning and family governance. This guide focuses on leadership and talent succession inside organizations, which is about who runs the work rather than who owns the shares.

Which roles need a succession plan?

The roles that need succession plans are the ones whose sudden vacancy would hurt the business most and would be hardest to fill. Bullseye’s succession planning FAQ describes a critical position in exactly those terms: a role with significant operational impact that would be hard to fill if vacated.

That usually means a short list. Trying to plan succession for every job spreads attention so thin that nothing gets developed. Start with the roles where the cost of a gap is highest, then expand.

Five tests for a critical role

Run each candidate role through five questions. A role that scores high on two or more deserves a plan.

1. Business impact. If this seat were empty for three months, what would stop, slow down or break? Think revenue, safety, compliance, customer relationships and decisions that would stall.
2. Difficulty to fill. How long would an external search take, and how scarce is the skill set? Roles that need rare technical skills, licenses or deep industry knowledge score high.
3. Unique knowledge. Does the incumbent hold knowledge that is not documented anywhere, such as how a process really works, why past decisions were made or who to call in a crisis?
4. Relationships. Does the role carry relationships that would be at risk in a transition, such as key customers, regulators, lenders or partners?
5. Strategic weight. Is the role central to where the business is going, not just where it is today? A role that will grow in importance under the next three-year plan should be on the list even if it is small now.

Do not stop at the executive team

The executive team is the obvious starting point, and most organizations should cover it first. But critical roles often sit lower in the structure. Examples include a plant or site manager, a lead scientist, a senior underwriter, a head of a key client account, an IT architect who owns a core system, or a compliance officer whose sign-off is legally required.

These roles are where key-person risk tends to hide. Key-person risk is the exposure that comes from relying on one individual for knowledge, relationships or decisions that nobody else can provide. It rarely shows up on an org chart, which is why it needs to be looked for on purpose.

Weigh the risk of losing the incumbent

Criticality tells you how much a vacancy would hurt. Flight risk and retirement timing tell you how likely it is. A critical role held by someone who plans to retire in 18 months is more urgent than an equally critical role held by someone newly hired and highly engaged.

A practical way to combine them is to plot these two dimensions together: impact of loss on one axis, likelihood of loss on the other. Bullseye’s succession planning page describes a Risk Matrix used alongside succession coverage and talent data to flag roles or people at risk. Whatever tool you use, the roles that score high on both impact and likelihood go to the top of the list.

An illustrative example

Consider a hypothetical regional distribution company with 1,200 employees. Its first-pass list of critical roles might include the CEO, CFO and COO; the three regional operations directors; the head of fleet safety, because of regulatory exposure; the senior pricing analyst who built the company’s rate model; and the IT lead who maintains the warehouse management system.

That is about ten roles, not two hundred. It is small enough to manage well in the first cycle and broad enough to cover the real points of failure.

The core components of a succession plan

A complete succession plan has eight parts: a success profile for the role, a risk view of the incumbent, a successor slate, readiness ratings, an assessment of each successor, a gap analysis, development plans, and an emergency cover. Missing any one of them weakens the rest.

The success profile comes first

A success profile describes what great performance in the role looks like. It should cover technical skills, leadership competencies, critical experiences (such as having managed a P&L or led through a crisis) and the outcomes the role is accountable for.

Write it for where the role is going, not just where it has been. If the next five years will require a regional leader to run a digital sales channel, the profile should say so, even if the incumbent never had to. Bullseye’s Competency Management page describes this kind of setup: a central competency library mapped to roles, with gaps found by comparing expected competency levels against assessment results.

Readiness is a timeline, not a label

Readiness ratings are where many plans become vague. “High potential” is not a readiness rating. A useful rating tells you when the person could take the role with an acceptable level of risk.

Three bands are usually enough. One simple set is ready now, ready in 1 to 2 years, and ready in 3 or more years. Whatever bands you choose, define them in writing so that two leaders rating the same person reach the same answer.

Depth beats a single name

One successor per role is fragile. That person might leave, decline the move or take a different role. A sensible target is at least one ready-now and one ready-later successor for each critical role, so the plan survives the loss of any single person.

The number of successors a role needs depends on its risk. Bullseye’s AI Advisor page, for example, describes recommending how many ready successors each role needs based on risk, complexity and business context. That reflects a sound principle even if you set targets by hand: the riskier the role, the deeper the bench should be.

Development plans are the engine

The development plan is the part that changes outcomes. A successor who is “ready in 2 years” will not become ready on their own. They need specific experiences, coaching and feedback, scheduled and tracked.

Good development plans are short, specific and owned. Each action names the gap it closes, who is responsible for making it happen, and when it will be reviewed.

The succession planning process, step by step

The succession planning process runs in eight steps, from strategy to ongoing review, followed by managing the transition when a seat opens. Then it repeats. The first cycle takes the most effort; later cycles mostly update what is already there.

Step 1: Start from strategy and agree on scope

Succession planning should serve the business plan. Begin by asking which capabilities the organization will need over the next three to five years and where leadership gaps would put that plan at risk.

Then agree on scope for the first cycle. Decide which levels and functions are in, who sponsors the work, and when results will be reviewed. A tight first cycle that finishes is better than a broad one that stalls.

Step 2: Identify critical roles

Use the five tests from the previous section: business impact, difficulty to fill, unique knowledge, relationships and strategic weight. Add the likelihood of losing the incumbent to rank the list.

The output is a ranked list of critical roles with a short note on why each one made the list. That note matters later, when someone asks why one role has a plan and another does not.

Step 3: Define what success looks like in each role

For each critical role, write or update the success profile: competencies, critical experiences and key outcomes. Involve the incumbent and their manager, but check the profile against strategy so it describes the future role, not a copy of the current person.

Step 4: Assess the talent pool

Gather evidence on potential successors. Typical inputs are recent performance results, competency assessments, potential ratings, career aspirations and mobility. For more depth, add 360-degree feedback or validated assessments.

Separate performance from potential. Performance describes results in the current role. Potential describes the capacity to succeed in a larger or different role. Bullseye’s guide on how to identify high-potential employees explains why that distinction matters and how manager nominations and informal processes can introduce bias.

A 9-box grid plots performance and potential together so you can compare people on the same scale. The grid is a discussion tool, not a verdict.

Step 5: Name successors and rate their readiness

In a structured talent review meeting, leaders discuss candidates for each critical role, agree on a successor slate, and assign readiness ratings using the shared definitions. HR facilitates, challenges assumptions and records decisions.

The discussion is where the real value sits. Leaders who see each other’s talent learn where the strong candidates are, where the bench is thin, and where one person is named as a successor for too many roles.

Step 6: Analyze gaps and build development plans

For each named successor, compare the success profile with the evidence from Step 4. List the two or three gaps that matter most for readiness, then build a development plan to close them.

The strongest development actions are usually experiences: stretch assignments, project leadership, rotations, acting roles and exposure to senior forums. Training and coaching support those experiences. Each action needs an owner and a review date.

Step 7: Talk to successors

Decide in advance what you will tell people and how. It is usually wise not to promise a specific job, because circumstances change. But a successor who has no idea they are valued, and no visible development, is easy to recruit away.

A useful middle ground is to discuss development and aspirations openly, without guaranteeing an outcome. The 2010 Stanford and Heidrick & Struggles survey found that 65% of firms had not asked internal candidates whether they even wanted the CEO job (Stanford GSB). Asking is the simplest step most plans skip.

Step 8: Monitor, review and update

A succession plan is out of date the day someone resigns, gets promoted or changes priorities. Review critical-role coverage and development progress on a set cadence. A practical rhythm is to review the full plan at least once a year and check progress on the riskiest roles more often.

Bullseye’s AI Advisor page makes the same point in one line: “Succession planning should not be an annual exercise.” The plan should change when the business and the people change.

When the seat opens: manage the transition

The process does not end when a successor is chosen. New leaders need onboarding, a clear handover and support in their first months. The 2010 Stanford survey found that only 50% of companies provided onboarding or transition support for new CEOs (Stanford GSB), which leaves the other half to sink or swim at the most visible moment.

After each transition, run a short review. What did the plan get right, what surprised you, and how ready was the successor really? Feed those lessons into the next cycle.

Who owns succession planning?

Succession planning is owned by business leaders and run by HR. When HR owns it alone, it becomes a form-filling exercise; when leaders own it without HR, it becomes inconsistent and prone to favoritism. Each group has a distinct job.

The board’s role

For public companies, CEO succession is a board responsibility. As noted earlier, SEC staff described succession planning as one of the board’s key functions (SEC). Yet the 2014 Stanford study found that only 46% of respondents reported board involvement in succession planning and talent reviews (Stanford GSB, 2014).

Private companies and nonprofits have the same exposure, even without the regulatory spotlight. Their boards should see the CEO slate, the emergency plan and coverage for the top team at least once a year.

The CHRO’s role

The CHRO is the architect and the honest broker. HR designs the process, sets the definitions, prepares the data and facilitates talent reviews. Just as important, HR challenges ratings that do not match the evidence and spots patterns no single leader can see, such as one person named as successor for five roles. Bullseye’s article on the CHRO role in CEO succession covers what boards expect from that partnership.

The manager’s role

Managers are where the plan meets reality. They hold the development conversations, assign stretch work and give feedback. They also face a real tension: the better they develop a successor, the more likely that person is to move on to another team.

Organizations that treat talent as a shared asset make that tension easier. Recognize managers who export talent, and include development of successors in leadership expectations.

The employee’s role

Successors are not passive. Their aspirations, mobility and willingness to take on a bigger role all shape whether a plan works. A plan that names someone who does not want the job, or cannot relocate for it, gives a false sense of coverage.

Common succession planning mistakes, and how to avoid them

Succession plans tend to break down in a few predictable ways: they are built once and left alone, they rest on opinion instead of evidence, or they name people without developing them. The table summarizes eight common mistakes; the sections below expand on the ones that do the most damage.

Confusing performance with potential

Strong results in today’s role do not guarantee success in a bigger one. A top individual contributor may not want, or be suited to, leading a large team. Gallup’s research found that companies miss on high managerial talent in 82% of their hiring decisions, and that only about one in 10 people have high talent to manage (Gallup).

The fix is to assess potential directly, with criteria agreed in advance, and to look at evidence beyond current results: how the person learns, how they handle ambiguity, how they lead without authority and whether they want the larger role.

Letting bias decide who has “potential”

Potential ratings are especially vulnerable to bias, because they are judgments about the future. A study by Alan Benson, Danielle Li and Kelly Shue of about 30,000 management-track employees at a large North American retail chain found that women received higher performance ratings than men on average but 8.3% lower ratings for potential, and were 14% less likely to be promoted (MIT Sloan).

Practical safeguards include written definitions of potential, calibration sessions where leaders must justify ratings with examples, a review of rating patterns by group, and a check on whether successor slates reflect the eligible talent pool.

The phantom bench

A plan can show three successors for every role and still be thin. If the same strong director is named as the successor for six roles, the organization has one person, not six. Only one of those roles can be filled by her.

Count unique successors, and look for overlaps when you review the plan. Where overlap is high, the honest answer is to develop more people.

Names without development

A successor slate with no development plans is a forecast, not a plan. The readiness rating will not change unless something happens to the person: a new assignment, new exposure, coaching or feedback. Make development plans a requirement for anyone named, and review progress as seriously as you review the names.

Ignoring successor retention

High-potential employees are often the people competitors most want to hire. If they cannot see a path, they may take one elsewhere. Track the turnover of named successors as its own number, and treat a rising rate as an early warning that the plan is not visible or credible to the people in it.

How to measure whether succession planning is working

You can tell whether succession planning is working by tracking a handful of numbers over time: how many critical roles are covered, how deep the bench is, how often leadership roles are filled internally, and whether successors are developing and staying. Bullseye’s article on succession planning metrics and KPIs sets out seven such measures, summarized below.

Start with three

If you are early in the work, track three numbers first: critical role coverage, internal fill rate and successor turnover. Together they tell you whether you have a plan, whether you use it and whether it holds together.

Add the others as the process matures. Bench strength and time to readiness need a few cycles of consistent data before trends mean much.

Watch for the gap between coverage and readiness

A high coverage rate can mask weak readiness. If most of your successors sit in the “ready in 3 or more years” band, your coverage on paper will not help if a seat opens next quarter. Report coverage by readiness band, not as one combined number.

This is the same gap the Stanford research highlighted at the top of organizations: half of boards believed they had an effective plan, while only a quarter saw an adequate pool of ready CEO candidates (Stanford GSB, 2014).

Report the numbers to the people who decide

Metrics only change behavior when leaders see them. Share a short succession dashboard with the executive team and board at each review: coverage by readiness, the top risks, successor turnover and progress on development. Keep it to a page so that it gets read.

Where succession planning software fits

Software does not make succession decisions, but it makes the process sustainable once you cover more than a handful of roles. It keeps the data in one place, connects assessments to development, and keeps the plan current between reviews.

What spreadsheets do well, and where they break

A spreadsheet is a reasonable place to start a first cycle with ten or fifteen roles. It is familiar, cheap and flexible.

It breaks as the plan grows. Versions multiply in email, ratings drift because nobody sees anyone else’s, performance and competency data have to be copied in by hand, and development plans live in a different file from the successor slate. Confidential data also ends up in too many inboxes.

What to look for in a tool

When the process outgrows a spreadsheet, look for capabilities that match the steps in this guide:

• Critical role and risk tracking, so you can see which roles matter most and where exposure is highest.
• Talent profiles that bring performance, competencies, potential and aspirations together for each person.
• A 9-box or talent matrix to compare people on performance and potential during talent reviews.
• Successor slates with readiness ratings for each critical role.
• Gap analysis and development plans linked directly to each successor.
• Dashboards for coverage, bench strength and successor turnover.
• Role-based access so sensitive talent data is visible only to the right people.

How Bullseye supports succession planning

BullseyeEngagement’s Succession Planning solution follows the same three moves this guide describes: identify critical positions and candidates, visualize readiness, and build development plans. According to the product page, it includes:

• Talent Card: a single employee profile that brings together competencies, Talent Matrix placement, Leadership Matrix insights, risk assessment, development plans, succession candidates and gap analysis.
• 9-Box Talent Matrix: an interactive grid that rates employees on performance and potential.
• Leadership Matrix and Risk Matrix: views for leadership readiness and for flagging roles or people at risk.
• Gap analysis and Individual Development Plans: to turn readiness gaps into targeted development.

Two related capabilities support candidate identification. Talent Match compares the competencies a position requires with people’s profiles and ranks candidates by fit. Competency Management provides the shared competency library those comparisons rely on.

For organizations that want analysis on top of the data, Bullseye’s AI Advisor is designed for continuous succession planning. In the current workflow, customers identify the critical positions in scope. AI Advisor then identifies and ranks successors, assesses bench strength and readiness, builds individualized development plans, flags exposure and risk, and produces board-ready outputs such as succession slates, 9-box placements and executive risk summaries. The product page also states that AI Advisor provides recommendations only and does not make decisions.

That last point matters. Bullseye’s own article on how AI is changing succession planning argues that AI rankings are inputs to a decision, not the decision itself, and that leaders remain accountable for the choice.

Organizations that want these pieces packaged together can review the Succession Planning IQ Bundle, which offers three packaged options, from Foundational Succession (9-Box Talent Matrix, succession plans, Talent Card, risk assessment and development planning) to Intelligent Succession, which builds on it with AI Advisor.

Frequently asked questions

1. What is succession planning in simple terms?

Succession planning is deciding, in advance, who could take over each critical role and helping those people get ready. It protects the business from leadership and expertise gaps and gives capable employees a visible path to bigger roles.

2. What is the difference between succession planning and replacement planning?

Replacement planning names a backup for a role. Succession planning goes further: it assesses how ready each candidate is, identifies their gaps and puts development plans in place so they are prepared when the role opens.

3. Which positions need a succession plan?

Critical positions: roles with significant business impact that would be hard to fill if vacated. These include executive roles, but also key experts, site leaders and anyone who holds unique knowledge or relationships. Start with a short list and expand over time.

4. How far ahead should a succession plan look?

A practical plan works across three horizons: who could cover the role right now, who could be ready in one to two years, and who could be ready in three or more years. The plan should also link to the organization’s strategy for the next three to five years.

5. How often should a succession plan be updated?

Review the full plan at least once a year and revisit the highest-risk roles more often. Update it whenever a critical role changes hands, a named successor leaves or business priorities shift.

6. Should employees know they are in a succession plan?

There is no single rule, but silence carries real risk: successors who cannot see a path are easier to recruit away. A sensible approach is to discuss development and aspirations openly without promising a specific job.

7. Who is responsible for succession planning?

Business leaders own the plan for their areas, HR designs and runs the process, and the board oversees CEO and top-team succession. Managers develop successors day to day, and employees own their development and career goals.

8. Can AI do succession planning?

AI can support key parts of succession planning by analyzing available talent data, ranking internal candidates using factors such as role alignment, competencies, performance and potential, assessing bench strength and readiness, and recommending development actions. It should support decisions, not make them. Leaders still define the business context, review the recommendations and own the final choice.

Conclusion: start small, keep it current

Succession planning is a simple idea done well: know your critical roles, know who could fill them, and develop those people before you need them. What makes it work is not a thick binder. It is reviewing the plan regularly, basing ratings on evidence and acting on development plans.

If you are starting from scratch, pick ten critical roles, write a success profile for each, name and rate successors in a structured talent review, and put a development plan behind every name. Then measure coverage, internal fill rate and successor turnover, and repeat.

Ready to move succession planning out of spreadsheets? See how BullseyeEngagement’s Succession Planning solution brings talent profiles, the 9-Box Talent Matrix, risk views and development plans into one place, or contact the Bullseye team to request a demo.