An interim Sales Manager makes sense when your sales team loses its leader overnight, when a reorganisation has to be carried out by someone who will not stay, or when a long absence leaves the role filled on paper but empty in practice. Outside those cases, a well-framed internal acting arrangement, combined with a permanent search launched straight away, costs less and protects the team better. This guide helps you choose, work out how long the seat will really stay empty in Belgium, and prepare the handover. The reasoning is the same as for any Sales Manager recruitment: start from the mandate, not from the urgency.
In brief
- Three options: an external interim manager, an internal acting manager, or a direct permanent hire.
- In Belgium the gap can be calculated: resignation notice capped at 13 weeks, a search of around 12 weeks, then the new hire’s own notice. Without anticipation, that is close to six months without a leader.
- An interim manager is justified after a sudden departure in a critical quarter, for a reorganisation, or during a long absence of the incumbent.
- The search for the permanent Sales Manager starts on day one, whatever the interim option.
- An interim manager managed like an employee exposes you to the employment relationship being requalified.
- The handover is prepared from the first day: a mission letter, a handover file, a few weeks of overlap.
Three ways to cover a vacant Sales Manager role
The choice is usually framed as “bring in an interim” versus “recruit”. In reality there are three levers, and they combine.
The external interim manager
An experienced manager, usually self-employed, takes the role for a limited period with real authority to execute: leading the team, owning the forecast, setting priorities. A consultant advises; an interim manager owns the results. There is no career agenda inside your company, and the assignment ends when the job is done.
The internal acting manager
Someone in-house covers the role: the sales director taking the team back directly, the managing director in smaller firms, or a senior salesperson appointed “acting” Sales Manager. It is the most common option because it looks free. It is not.
The direct permanent hire
You launch the search immediately and accept a period of drift. That works when the team is autonomous, the quarter is not critical and the target profile is clear. Otherwise, the permanent search runs alongside one of the first two options.
How long will your team be without a Sales Manager?
This is the question that should drive the decision, and hardly anyone puts a number on it. In Belgium, three periods add up.
- The departing Sales Manager’s notice. When an employee resigns, the notice period depends on length of service and cannot exceed 13 weeks, according to the scale published by the FPS Employment. If you end the contract yourself, the departure is often immediate.
- The length of the search. On our assignments, it takes an average of 12 weeks from the client’s signature to the candidate’s.
- Your future Sales Manager’s notice. The chosen candidate is almost always employed and must work out their notice, up to 13 weeks.
Do the maths. If your Sales Manager resigns with 13 weeks’ notice and you start the search that same day, the seat will stay empty for roughly the length of the successor’s notice, so up to three months. If you part ways with immediate effect, or delay the search, the gap approaches six months, before you even count the new manager’s ramp-up.
Six months without a leader means two quarters of guesswork in the forecast, salespeople setting their own priorities and, often, your best people taking calls from headhunters. That is the cost to set against the price of an interim manager.
Which option for which situation?
These are the trade-offs we see most often. Note that the permanent search starts in almost every case.
| Situation | Option for the interim period | Permanent hire |
|---|---|---|
| Sudden departure, critical quarter, team lacking autonomy | Interim manager | Launch the same day |
| Resignation announced, credible deputy in place | Internal acting manager, with a clear framework | Launch during the leaver’s notice |
| Reorganisation, merging teams or unpopular decisions ahead | Interim manager with a restructuring mandate | Launch once the new organisation is settled |
| Long absence of the incumbent (illness, leave) | Internal acting or interim manager, depending on duration | No, the role is not vacant |
| Doubt about the target profile, role to be redefined | Short interim while the team is assessed | Launch once the profile is validated |
| Creating the first Sales Manager role | None, the role is built with its holder | Main option |
| Sales Manager in post but not delivering | None until the problem has been objectively assessed | After assessment, if replacement is decided |
Two rows deserve a comment. A first Sales Manager role is a poor fit for interim management: whoever sets the routines and targets should be the one who makes them work. And replacing a struggling manager before knowing whether the problem lies with them, the team or the targets only moves the question elsewhere.
Expert view
We support clients and candidates before, during and after the hire. Not out of courtesy: by design. The first three months of a sales or management hire shape what happens for the next three years. If onboarding fails, the placement is lost, regardless of how good the sourcing was. That’s why our support doesn’t stop at contract signing. It’s also why our clients come back: they aren’t signing for a recruitment, they’re signing for a long-term partnership.
When an interim manager is the right answer
Three situations justify it. First, a sudden departure at the worst time: year end, annual negotiations with retail chains, renewal of framework agreements. A team without a leader loses deals it would have signed. Second, a reorganisation: merging two teams after an acquisition, redrawing territories, letting salespeople go. An outsider with no past or future in the company can take those decisions without being compromised, and hands a stabilised team to the permanent holder. Third, a long absence of the incumbent, where recruiting makes no sense.
Be demanding about the profile: you need someone who has run a forecast, led pipeline reviews and coached salespeople in the field, not an interim executive from finance or operations. Check languages too. A team covering Flanders, Brussels and Wallonia cannot be led in one language.
Also set the rule on applications. An interim manager who is a candidate for the permanent role stops being neutral, because their decisions also serve their application. Decide at the outset whether they may apply and, if so, assess them like the other finalists.
Internal acting cover: the most common option, and the most underestimated
Handing the team to an insider is often the most sensible decision, provided you treat it as a decision rather than a stopgap. The typical case: the best salesperson, made acting manager because they know the customers and the others respect them. Three risks follow.
The first is arithmetic: your top seller’s portfolio no longer gets the same attention, and that lost revenue is never counted. The second is managerial: leading former peers is a different job, and the question of whether a top salesperson makes a good Sales Manager arises here in its most concrete form. The third is personal: the acting manager quickly sees themselves as the natural successor. If you end up hiring externally, you may lose them and their portfolio.
So put in writing the length of the arrangement, what is expected, what is out of scope, and how any application will be handled. If you are considering confirming them in the role, test their ability to hold it through an assessment for internal promotion rather than on their sales results alone. Our assessments last one to three hours, cost between €1,500 and €3,000, and combine an in-depth interview, role-plays and the KOAN test, the tool we have used for 30 years. The case for and against internal promotion is set out in our article on promoting internally or recruiting an external Sales Director.
If the acting period lasts several months, give the person what they need to succeed: training in management fundamentals and feedback, followed by field coaching. With us, a training day costs €2,500 and a field coaching day €1,800, a small amount next to a semester of approximate leadership.
What each option really costs
There is no reliable public rate card for interim management in Belgium: assignments are billed by the day, on quotation. Rather than another unverifiable figure, here is how to compare the options.
| Option | What you pay | Hidden cost to include |
|---|---|---|
| Interim manager | A day rate multiplied by the days worked over the assignment | An assignment that drags on because the permanent search started late |
| Internal acting manager | Possibly an acting allowance, plus training if it lasts | The sales the acting manager no longer makes, the risk of losing them if not chosen |
| Permanent hire | The holder’s package and, if you use a firm, its fee | The cost of the empty seat during the search and notice periods |
Set against an employee’s daily salary, an interim manager’s day rate will always look high, but the comparison is misleading. The rate covers the self-employed manager’s social contributions, periods between assignments and, where relevant, the intermediary’s margin; it carries no notice period, no fringe benefits and no company car. Conversely, an employed Sales Manager costs far more than their gross salary, as we explain in the total cost of a Sales Manager in Belgium. The right calculation adds up, scenario by scenario, what you pay and what the team loses.
For a permanent hire, our fee is agreed in advance at between 25% and 30% of the annual package, paid in three instalments (25%, 25% and 50%), with a six-month replacement guarantee. This retainer commits us to see the assignment through, which matters when an interim manager is being paid every day while you wait for the permanent holder.
The legal risk nobody mentions
Most interim managers are self-employed. Yet an interim Sales Manager is deeply embedded: managing employees, sitting on the leadership team, using your systems. If in practice they work like an employee, the relationship can be requalified as an employment contract, with social security consequences.
Belgium’s Programme Law of 27 December 2006 assesses whether there is a relationship of authority using four general criteria: the will of the parties, freedom to organise working time, freedom to organise the work, and the possibility of hierarchical control. The Administrative Commission for the Regulation of Employment Relationships (site in French and Dutch) can rule on a specific relationship and issues its decisions within three months of the request. In practice, write a mission letter built around deliverables rather than working hours, leave the manager in charge of their own diary, and have the contract checked by your legal adviser.
Preparing the handover from day one
The interim period is only worth something if it prepares the arrival of the permanent holder. External or internal, it starts with a mission letter based on the responsibilities of an operational Sales Manager, stating what is delegated, what is not, and what must be handed over. Targets for the period deserve the same rigour as a permanent manager’s; our guide on how to set Sales Manager objectives sets out the method.
Before the new Sales Manager arrives, insist on a handover file that covers at least:
- the state of the pipeline and forecast, deal by deal, with dated next steps;
- the situation of sensitive accounts and ongoing negotiations;
- a read on each salesperson: results, strengths, watch points, flight risk;
- decisions taken during the period and those deliberately left to the successor;
- the real state of the CRM and team routines.
Then plan two to four weeks of overlap between the interim and the permanent manager, long enough for introductions to key accounts. Treat the new Sales Manager’s arrival as that of a key hire: our 30-day onboarding checklist for a key hire gives you the framework.
The mistakes that turn a temporary fix into a problem
The most common is delaying the permanent search because “it’s holding up”: every month apparently saved lengthens the interim bill. Next comes the interim who commits the successor through structural decisions. Then silence: a team and customers who do not know who is in charge, or for how long, assume the worst.
The last mistake is quieter: hiring a clone of the leaver in a hurry. A well-run interim period gives you time to redefine the role and assess the finalists properly. An assessment of your finalists saves you paying twice for the same mistake.
Our recommendation
First work out how long your team will be without a leader, then choose the option that covers that period at the lowest total cost. An interim manager is justified when the stakes of the period or the nature of the decisions require it; internal acting cover, when a solid profile is in place and given a clear framework. Either way, the permanent search starts immediately. For 33 years we have recruited, assessed and trained sales and management profiles in French, Dutch and English. If you need to replace your Sales Manager, let’s talk about your Sales Manager recruitment in Belgium: on the first call, we challenge the profile before we talk about sourcing.
Frequently asked questions
What does an interim manager cost in Belgium?
There is no reliable public rate card: interim managers bill by the day, on quotation, depending on seniority, duration and any intermediary. Compare the total cost of the assignment with the cost of an empty seat and of a permanent hire.
How long does an interim Sales Manager assignment last?
As long as it takes to recruit the permanent holder, wait for their notice to end and organise the handover. In Belgium, count several months: around 12 weeks of search, up to 13 weeks of notice, then two to four weeks of overlap.
What is the difference between an interim manager and a consultant?
The interim manager holds the role and owns the results: leading the team, running the forecast and taking decisions. A consultant analyses and recommends, with no authority over the team and no accountability for the numbers.
Can an interim manager become the permanent Sales Manager?
Yes, if this is agreed from the start and they are assessed like the other candidates. Without a clear rule, they lose their neutrality, since their decisions also serve their application.
Should the permanent search start during the interim assignment?
Yes, from day one, unless the incumbent is only temporarily absent. Waiting lengthens the assignment, its bill and the team’s uncertainty.
What is the role of an interim Sales Manager?
To keep the commercial engine running: leading the team and the forecast, protecting key accounts, delivering the priorities set in the mission letter, then handing a complete file to the permanent holder.
Total Cost of a Sales Manager in Belgium: From Gross Salary to Employer Cost- Indirect Sales Manager: Job Description
- How to set a Sales Manager’s objectives so the whole team performs
- Sales Manager: Job Description
- Sales Manager Responsibilities: What an Operational Sales Manager Really Does
- Sales Manager: Job Profile
