Interim Management: The First 100 Days of an IT Mandate

An interim mandate comes without an onboarding period. An interim manager who takes over an IT organization or a critical project is measured by the impact of the first weeks — not by the number of meetings held. Michael D. Watkins puts it plainly in “The First 90 Days” (Harvard Business Review Press): missteps during the first three months in a new role can jeopardize the entire engagement. For time-limited mandates this applies twice over, because the clock starts on day one.

Clarify expectations, assess the situation, show impact

Four fields of action decide the first 100 days:

Expectation setting with the client: What exactly is the assignment — bridging a vacancy, rescuing a project, building something new? A written target picture with measurable criteria prevents the mandate from failing later over unspoken expectations.
Rapid situation assessment: Project portfolio, team and vendors are reviewed systematically in the first two to three weeks. Which projects contribute to the business, which merely consume capacity? Where are decisions stuck? Which contracts are expiring?
Quick wins before structural reform: Visible improvements — a defused escalation, a cleared project backlog, a reliable priority list — build the trust that structural measures will need later. Watkins calls early wins a key lever for establishing oneself in a new role.
A fixed communication rhythm: A weekly status report to the client and standing appointments with key stakeholders replace rumor with facts — especially when uncomfortable findings have to be put on the table.

Why the market rewards structured transitions

Interim management is well established in the German-speaking region. According to the DDIM market study 2026, around 12,500 interim managers are active in Germany, with a total market volume of roughly 2.7 billion euros; the average daily rate is projected at 1,317 euros, and expected utilization rises from 79 to 81 percent. Clients pay these rates because the investment pays off: the Heuse study on the D-A-CH region, conducted annually since 2001, puts the return on interim management at 5.82 euros per euro invested — 14 percent of respondents even report more than 10 euros. This return does not come from presence, however, but from a structured approach in the first weeks — and from a goal that is fixed from the start: an orderly handover.

What project leaders should do now

Anyone commissioning an interim manager can actively shape the first 100 days: formulate a clear mandate with measurable goals, ensure access to systems, numbers and key people from day one, and agree on a binding reporting rhythm. Just as important: plan the handover from the very beginning. A good mandate does not end with the last working day but with an organization that can carry on without the interim manager — documented, prioritized, with clear responsibilities. The metric that matters is therefore not how indispensable an interim manager becomes during the mandate, but how dispensable he is at the end.