The short answer
An interim controller is an experienced controller who works in your company for a limited period, for example when a position is vacant, during a build-up phase or before a funding round. They take over planning, reporting and KPIs and build structures that remain afterwards.
What an interim controller does
- Reporting: monthly reports, KPIs and variance analyses that management can read and use.
- Planning and budget: annual planning, forecasts and scenarios based on a reliable financial model.
- Liquidity: short-term planning, for example as a 13-week cash forecast.
- Processes: streamline the month-end close, clarify responsibilities, standardize reports.
- Handover: documentation so a permanent successor can continue seamlessly.
When an engagement pays off
Vacant position
The controller leaves or is absent, and filling the role takes time. An interim controller keeps reporting and planning running until the role is filled.
Building up controlling
A growing company does not yet have reliable reporting. The interim controller builds it before a permanent position is justified.
Before funding or a sale
Investors and buyers want clean numbers and a traceable plan. Temporary controlling prepares the data basis.
Peaks and special projects
Introducing a new system, integrating an acquisition or clearing a closing backlog: here you need capacity and experience for a clearly defined topic.
Interim controller, permanent hire or consulting?
An interim controller works in the day-to-day, is accountable for results and is limited in time. A permanent hire makes sense for ongoing needs. Consulting delivers concepts but usually does not implement them. For the leadership level, see our comparison of Interim CFO options.
What to look for when choosing
- Industry and systems knowledge: does the person know your business model and your accounting and planning tools?
- References: do they have comparable engagements where structures remained?
- Clear goals: define in advance what should exist after the term, for example a monthly report that is ready for management within a set number of working days.
- Scope and duration: set days per week and length to fit the task.
- Communication: who reports to whom, and how often?
How an engagement runs
It starts with a short conversation about the situation and goals. Then comes a review of figures, reports and processes, from which a prioritized plan emerges. In the main phase the interim controller works in day-to-day operations, and the engagement ends with a handover including documentation. Our Interim Accounting & FP&A offering describes how we do this.
Frequently asked questions
How much does an interim controller cost?
It depends on experience, scope and duration. Usually billing is per day. Ask for a clearly defined scope of work, not just the day rate.
How quickly can an engagement start?
That depends on availability and the task. Interim engagements usually start much faster than a permanent hire.
How long does an engagement last?
Typically a few weeks to several months, depending on whether it is a stopgap or building structures.
What is the difference to an interim CFO?
An interim controller is responsible for planning, reports and KPIs. An interim CFO additionally carries overall responsibility for financing, steering and discussions with investors and banks, see Interim CFO.
