Interim management and fractional management: scope, cost and role handover
Interim management is the temporary running of an area by an experienced external manager. Fractional management is the same role on a part-time basis, usually 1–3 days a week. The article describes the situations in which these formats make sense, how to set the scope, a worked cost comparison, the role handover and common mistakes.
Amounts and values in the examples are illustrative and show how the calculation works. In projects, we use the client's data.
Dominik Dębski · Lemur Media · · reading time: 4 min
Reviewed by Dominik Dębski, 1 November 2026
What are interim and fractional management?
Interim management means temporarily entrusting a leadership position to an experienced external manager for a defined period, usually during change, a crisis or a vacancy; fractional management is the part-time variant. According to popular accounts, the modern form of interim management developed in the Netherlands in the second half of the 1970s. An interim manager runs an area and is accountable for results, which distinguishes them from an adviser. A typical assignment covers entry, diagnosis, a proposal for change, implementation and exit with a plan for filling the role going forward.
| Feature | Interim | Fractional | Adviser |
|---|---|---|---|
| Time commitment | Full-time | 1–3 days a week | Per project |
| Decision-making authority | Yes, within the area | Yes, within the area | No, recommends |
| Accountability for results | Yes | Yes | For the quality of recommendations |
| Typical duration | 3–12 months | From a few months | From a few weeks |
When does interim or fractional management make sense?
Both formats make sense when a company needs decisions at the level of an area leader faster or more cheaply than through permanent hiring.
- After an area leader leaves, when recruiting a permanent replacement will take several months.
- When the company does not yet need a full-time product, data or growth leader but does need decisions at that level.
- For a large one-off task: putting an area in order, implementing a new operating model, preparing to recruit a leader.
- When the board wants to test the scope of a role before hiring a permanent person.
The format does not work when the area requires daily presence with a large team, when the board is not ready to delegate decision rights, or when the aim is merely ad hoc execution support.
How do you set the scope?
The scope covers 3–6-month objectives, decision rights, time commitment, measures and a role handover plan.
| Element | Example |
|---|---|
| Target | Putting the roadmap and planning process in order, preparing the recruitment of a head of product |
| Authority | Decisions on roadmap priorities, participation in board meetings |
| Dimension | 2 days a week for 4 months |
| Measures | Quarterly roadmap adopted by the board, time from request to decision, leader hired |
| Handover | 4 weeks of joint work with the new leader, documentation of decisions and processes |
How do you compare the cost of the options?
The comparison covers the cost over the same period and the point from which the role is filled. Example for 4 months (80 working days); rates and salary are assumptions to be replaced with the company's own data.
| Option | Assumptions | Cost over 4 months | Availability |
|---|---|---|---|
| Fractional, 2 days a week | 32 days × PLN 3,500 | PLN 112,000 | From 1–2 weeks |
| Interim, full-time | 80 days × PLN 3,000 | PLN 240,000 | From 1–2 weeks |
| Permanent leader | 4 × PLN 38,000 employer cost + PLN 60,000 recruitment | PLN 212,000 | Once recruitment is complete |
A permanent leader costs 152,000 ÷ 80 = PLN 1,900 per day excluding recruitment, but if recruitment takes 3 months, the area has no leader during that time. Fractional is the cheapest, provided that 2 days a week are enough to make decisions in the area. Full-time interim costs PLN 28,000 more over this period than a permanent leader including recruitment (240,000 − 212,000), but fills the role from the first weeks.
How does the role handover work?
The handover plan is drawn up at the start of the engagement and is part of the scope. It covers documentation of the decisions taken and their rationale, a description of processes and the meeting calendar, a list of open issues and a period of joint work with the successor. The interim manager takes part in recruiting the successor in an advisory capacity, while the board makes the decision. As a result, the successor knows a role scope described on the basis of several months of actual work in the area. The final weeks of the engagement are used to hand over relationships with the area's suppliers and key customers and to review the decision log, so that the successor understands the rationale for earlier choices.
What are the common mistakes and limitations?
- Scope described as "support" with no objectives and no decision rights.
- No handover plan, so knowledge leaves together with the manager.
- Extending a fractional engagement instead of recruiting when the area already needs a full-time role.
- Hiring an interim manager for a role in which the team expects daily presence.
- Comparing only day rates without taking into account how long the role remains unfilled.
- Not introducing the manager to the team as a person with decision rights, so decisions continue to go to the board.