There is no Swiss succession timeline, there are twenty six

Owners preparing to sell or hand over their Swiss SME almost all latch onto the same benchmark: twelve to eighteen months between the decision to sell and signing. That figure circulates in most guides, and as a national average it is not wrong. It is misleading all the same, because it treats Switzerland as one market when, for anything touching the timeline of a transmission, it behaves as twenty six separate jurisdictions. The same file, with the same buyer and the same advisory team, can take twice as long depending on the canton where the company is domiciled, for reasons that have nothing to do with the quality of the deal.

The first gap opens inside the cantonal tax office, well before the buyer signs anything. A structuring step that touches indirect partial liquidation or a preliminary reorganisation is usually secured through an advance tax ruling request. How fast a cantonal administration answers that kind of request varies sharply: some reply within weeks, others take months, particularly where the relevant office handles a caseload far beyond its staffing. An owner who builds a calendar purely on the generic benchmark, without having asked the trustee what turnaround that office actually delivers, finds out about the gap right when the buyer starts losing patience with how slowly the file is moving.

The second gap sits in the notarial system itself, a product of legal traditions that differ from canton to canton. Parts of German speaking Switzerland, Zurich, Bern and Aargau among them, run a free notarial market: several practices compete, appointments come quickly, and deeds keep pace with the deal. French speaking Switzerland and a handful of German speaking cantons instead run a state notarial system or a cantonal monopoly, with a fixed number of notaries set by law and appointment slots that stretch out during busy periods. That institutional choice, unrelated to the sale itself, directly shapes how fast a share transfer or a property deed can be authenticated.

The commercial registry adds its own variability. Some cantonal offices process filings within days thanks to largely digitised procedures, others carry a backlog that pushes the actual registration of a new director or a statutory change back by several weeks. Taken alone that gap looks minor; stacked on top of the previous two, it turns an announced twelve month calendar into a process that runs past eighteen, without either side having made a single mistake. None of these three offices coordinates with the others, so a delay in one rarely shows up until the deal is already deep into the next stage.

The generic timeline is not wrong, it is incomplete: it describes a national average that few actual deals follow.

Business real estate adds a final layer, specific to deals where the operating premises sit on the company's balance sheet or belong to the owner personally. Transfer duty rates on a property sale vary considerably from canton to canton, and so does the application of pre emption rights on land zoned for agriculture, which can delay a split between the walls and the operating business by months once the competent cantonal authority has to rule. An owner who built this piece into their succession timeline from the outset negotiates from a far more comfortable position than one who discovers it after already announcing a closing date to the buyer.

In the mandates I run, the cantonal gap explains a good share of the deals that slip by several months against the original calendar, more often than disagreements over price or financing terms. The buyer does not get irritated at the canton, they get irritated at a seller who seemed not to have anticipated a delay their own advisor could have checked in the first weeks of the engagement. That irritation shows up in the negotiation long before anyone mentions the calendar out loud, in a tone that turns noticeably less patient once a second or third deadline slips.

The right question to put to a trustee or a succession tax advisor is therefore not how long a Swiss SME transmission takes, but how long it takes in this canton, with this kind of asset and this tax administration. The answer to the first question sits in any guide. The answer to the second sits nowhere in writing, it gets checked, canton by canton, file by file.