Selling a Professional Services Firm in French-speaking Switzerland: What Makes a Successful Transfer

Why a professional services firm changes hands differently

When you consider selling your firm — whether it is a fiduciary, a consulting engineering office, an architecture practice, a surveying office or a consulting company — you are faced with a reality that standard approaches to business transfer cover only imperfectly.

The value of your firm does not rest on machinery, inventory or industrial patents. It is entirely intangible: the skills of your staff, a reputation built over years, the loyalty of a client portfolio and the quality of ongoing mandates. This is precisely what makes the transfer of such a firm both more delicate and more demanding than a conventional sale.

Understanding these specifics allows you to approach the sale with clarity, anticipate the points of attention and prepare a transition that protects what you have spent years building. By way of comparison, the issues shared with other service businesses are well documented in our article on selling a B2B services SME.

The portfolio of mandates and recurring revenue

In a professional services firm, the quality of revenue matters as much as its volume. A buyer — and more generally any serious acquirer — will quickly distinguish between two categories of revenue.

• Recurring mandates: bookkeeping, annual audit, tax management, multi-year maintenance or technical monitoring contracts. These flows are predictable, stable and can be valued.
• One-off assignments or projects: due diligence, feasibility studies, building permits, expert reports. This revenue is less predictable and perceived as more fragile in the event of a change of management.

The higher the recurring share, the more reassuring your firm's profile is for a buyer. Two elements considerably strengthen the credibility of this portfolio: the client retention rate over the last five years, and the existence of mandates formalised in writing.

Beware of change-of-control clauses: some framework agreements provide for automatic termination or a right of termination in the client's favour in the event of a sale. These clauses should be identified in advance and, if possible, negotiated before formally launching a transfer process.

Dependence on the founder and intuitu personae

This is often the most sensitive point in the transfer of a professional services firm. Clients chose your firm because they trust you, personally. This trust is a precious asset — but it can also be a major obstacle to the transfer if it is not gradually passed on.

Intuitu personae — the bond of trust attached to a person — is particularly strong in sectors where advice involves sensitive data (tax, legal, financial) or significant responsibilities (the load-bearing structure of a building, a company's regulatory compliance).

A successful transfer requires a gradual, planned introduction of the buyer to key clients, ideally during a period when you are still fully active. This transition phase must be anticipated and structured. It is in fact at the heart of the considerations addressed in our article on the post-sale transition period.

The team and key people: your main asset

In a professional services firm, your staff are the business. Their skills, their length of service and their relationships with clients make up the bulk of what a buyer acquires.

Several factors are decisive in the eyes of a buyer:

• The existence of an identified second-in-command, able to take on part of the operational responsibilities from the day after the sale.
• The stability and length of service of the team, which reflect a healthy working environment and a solid company culture.
• The absence of a risk of group departure: a partner or senior manager leaving and taking part of the client base with them represents a major, often underestimated, risk.

It can be useful, before any sale, to have informal discussions with your key staff to gauge their long-term commitment. Some may even be brought into the transfer through a shareholding or profit-sharing arrangement.

Professional titles, accreditations and regulatory requirements

Professional services firms often operate under strict regulatory frameworks, which directly determine the transferability of the business.

• In audit and assurance: accreditation by the Federal Audit Oversight Authority (FAOA) is personal. The firm must have at least one licensed auditor among its senior staff. If that person is the seller themselves, you need to anticipate how this accreditation will be held after the transfer.
• In fiduciary services: the federal diplomas of certified accountant or certified fiduciary expert, although not mandatory, are decisive quality markers for clients and for valuation.
• In engineering and architecture: registration in the REG (Register of Engineers, Architects and Technicians) or compliance with the requirements of the SIA (Swiss Society of Engineers and Architects) may determine access to certain public or private mandates.
• For licensed surveyors: the federal licence of certified surveyor is a legal requirement for signing certain documents. The transfer must ensure that this qualification is held within the firm after the sale.

These constraints are not deal-breakers, but they must be mapped early. A serious buyer will check them systematically, and an unanticipated gap can block or delay a transaction.

Valuing a professional services firm

The valuation of a firm rests mainly on its normalised earning capacity, often measured through EBITDA — that is, earnings before interest, taxes, depreciation, amortisation and provisions.

An essential preliminary step is the normalisation of the owner-manager's remuneration. In many firms, the founder pays themselves atypically — an undervalued salary topped up with dividends, a company car, mixed expenses. These items need to be adjusted to obtain an EBITDA that faithfully reflects the firm's real profitability.

Several parameters then influence this valuation positively or negatively:

• Share of recurring revenue: the higher it is, the better the valuation.
• Dependence on the founder: a high concentration of client relationships on the seller leads to a discount, as it creates a risk of losing clients after the sale.
• Strength of the team: a stable, qualified workforce is valued positively.
• Diversification of the client portfolio: heavy concentration on one or two major clients is a risk that weighs on the valuation.

To better understand what a buyer is actually looking for in this type of firm, we invite you to read our article on what a buyer really looks for.

Contractual tidiness and data protection

The transfer of a professional services firm involves a rigorous review of contractual and compliance aspects, often more complex than in other sectors.

• Formalisation of mandates: oral or tacit engagements must be documented. An unwritten mandate is difficult to value and potentially contentious in the event of a post-sale dispute.
• Assignment clauses: some framework agreements prohibit assignment without the client's prior consent. These clauses must be identified and, if possible, renegotiated before putting the firm up for sale.
• Professional secrecy: in the fiduciary, legal or medical fields, professional secrecy is a legal obligation. The transfer must be organised so as not to breach it, particularly when communicating information to the buyer during due diligence.
• Compliance with the FADP: the Swiss Federal Act on Data Protection, revised in 2023, imposes heightened obligations regarding the processing and transfer of personal data. The sale of a firm entails a transfer of client data that must be managed in accordance with these requirements.

Preparing the transfer and the direct-buyer approach

A successful transfer of a professional services firm is ideally prepared 12 to 24 months in advance. This lead time makes it possible to act on the levers that influence the valuation and to reduce the risks perceived by a buyer.

In concrete terms, this preparation includes:

• Documenting internal processes: procedures, tools, methodologies. A firm whose practices are formalised is much easier to take over.
• Strengthening the team and identifying an operational second-in-command.
• Putting contracts in order: written mandates, FADP compliance, verification of accreditations.
• Normalising the accounts over the last three to five financial years.

Vendre-Entreprise.ch positions itself as a direct buyer of professional services firms and companies in French-speaking Switzerland. This means you have a single point of contact, that confidentiality is total from the first contact, and that a letter of intent is delivered to you within 72 hours of the analysis of your file.

The transition is organised flexibly, according to your personal situation and the needs of your clients. Whether you wish to withdraw gradually over several months or envisage a quicker exit, the terms of the transition are defined jointly, with respect for what you have built.

If you run a professional services firm in French-speaking Switzerland and are thinking about its transfer, start by estimating its value with the valuation simulator, or get in touch directly for a confidential, no-obligation conversation.

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Disclaimer: This article is published for informational and educational purposes. It does not constitute legal, tax or financial advice and cannot replace the opinion of a qualified lawyer, notary or tax adviser. Every transfer situation is unique and must be analysed according to the particular circumstances of the seller and their company.