- · Vendor loans are not optional accommodations — they fill a structural financing gap that equity and bank debt alone cannot close in most Swiss SME transactions.
- · Swiss cantonal banks typically require vendor loans to be formally subordinated, with standstill clauses that defer repayment until bank debt is substantially reduced.
- · Interest rates on vendor loans run above bank rates to compensate for subordination risk, and amortization commonly begins no earlier than year three post-closing.
- · Informal, undocumented vendor loan arrangements routinely create legal and relationship disputes during integration or financial stress; formal documentation is not a formality — it is a condition of durability.
Every acquisition financing structure in the Swiss SME market rests on the same three pillars: buyer equity, senior bank debt, and a residual financing source. In theory, the first two should be sufficient. In practice, they rarely are.
According to Nachfolgeportal's guide on acquisition financing, equity in Swiss SME successions typically represents 20 to 40 percent of the purchase price, with cantonal banks frequently setting 30 percent as a working minimum. Bank financing then covers a further 40 to 60 percent of the transaction value. On paper, that accounts for the full price. In reality, the bank's willingness to lend is constrained not by headline capital availability, but by a single operational test: whether the company's free cash flow can service the debt after integration costs, working capital requirements, and near-term investment obligations are met.
That constraint regularly leaves a gap. As SGNafo-Praxis observes in its practitioner guide on SME succession financing, once transactions reach a certain scale, the capital available through buyer equity and bank financing is often insufficient to cover the full financing need. The vendor loan exists precisely to bridge that structural deficit. It is not a creative workaround or a sign of a distressed transaction. It is the fourth pillar that makes the stack stand.
Swiss cantonal banks are the primary institutional lenders in SME acquisition financing, and their acceptance conditions define what "bankable" means in this context. The Schwyzer Kantonalbank is representative of cantonal bank practice across Swiss regions: it advises acquisition candidates on the design and structuring of acquisition financing, including the protective measures — ranking agreements, subordination clauses, cash flow covenants — that give the bank confidence in the structure's durability.
For a cantonal bank, a vendor loan is not a dilution of their position. It is, in fact, a reinforcement of it — provided the instrument is properly structured. As ASSETRAS explains in its analysis of vendor loans in corporate transactions, when a financing bank is involved, a subordinated vendor loan may actively promote acquisition financing, or may be a condition the bank imposes outright. The reasoning is straightforward: the seller's willingness to leave capital in the company signals confidence in the buyer's capacity to operate and grow the business. It functions as a risk buffer for the senior lender.
The subordination itself is not merely a ranking preference. It is contractually enforced through standstill clauses that prevent the vendor loan from being repaid while the bank credit remains outstanding. This is not a loose arrangement. It is a hard legal constraint that the bank will require in writing before advancing its own facility.
Because the vendor loan sits behind the bank in the capital structure, it carries more risk than senior debt. Compensation for that risk comes in the form of a higher fixed interest rate. This is not punitive — it is pricing that reflects the instrument's actual position in the waterfall.
Amortization follows a deliberate sequencing logic. The bank loan typically amortizes over four to six years from closing. The vendor loan, by contrast, commonly enters a standstill period for the first two to three years, with repayment beginning only after the bank facility has been substantially reduced. ASSETRAS notes that shorter repayment periods and higher interest rates together encourage rapid repayment by the buyer once amortization does begin — an incentive structure that benefits the seller while respecting the buyer's cash flow constraints during the most operationally demanding phase of ownership.
The practical arithmetic behind this sequencing is illustrated by a representative acquisition structure cited by Nachfolgeportal: a CHF 2.5 million transaction financed with 30 percent equity (CHF 750,000), 45 percent bank debt (CHF 1.125 million), and 25 percent vendor loan (CHF 625,000). With normalized free cash flow of CHF 350,000 per year, the bank amortizes at approximately CHF 190,000 annually. The vendor loan remains in standstill for two years, then begins amortizing at CHF 156,000 per year from year three onward. The staging is not arbitrary. It reflects the buyer's actual debt service capacity after integration costs and working capital demands are absorbed.
If the amortization schedules are not properly aligned with bank covenants, the structure does not merely become uncomfortable — it collapses. The vendor loan's bankability depends on its coordination with the senior facility, not just its existence.
SGNafo-Praxis reports that approximately two-thirds of Swiss sellers are prepared to provide vendor financing. That figure is striking when one considers that sellers are, by definition, parties seeking liquidity. Why would the majority accept deferred repayment, subordination, and the operational risk that the buyer may underperform?
The answer lies in the alternative. Without a vendor loan, the acquisition financing structure frequently cannot be assembled at a price the seller finds acceptable. Banks will not stretch their facility beyond what free cash flow supports. Buyer equity is finite. The vendor loan is the mechanism that allows a transaction to close at a price that reflects the company's value rather than the limit of what a bank will fund. Sellers who understand this do not view the vendor loan as a concession — they view it as the instrument that makes their exit viable.
There is also a relational dimension. The vendor loan commits the seller to the transaction's success in a meaningful sense. If the buyer fails, the seller loses. That alignment of interests, however uncomfortable it may feel to a seller accustomed to clean exits, is precisely what gives the bank confidence that the seller's assessment of the business and the buyer is genuine.
It would be reasonable to expect that, given the vendor loan's structural importance, it would always be documented with the same rigour as the bank facility. In practice, informality is a persistent risk.
Nachfolgeportal is explicit on this point: a vendor loan should not operate as a handshake. It must be a formal financing instrument with a clean loan agreement covering interest terms, amortization schedule, ranking, termination rights, information rights, and conflict resolution provisions. Unwritten or vague vendor loan terms frequently trigger disputes during integration or financial stress — precisely the moments when all parties are least equipped to resolve ambiguity constructively.
A vendor loan without formal documentation is not merely informal. It is, in most practical scenarios, unenforceable in the way the parties assume it to be. The seller's rights are ambiguous. The buyer's obligations are undefined. The bank's subordination requirement may not be satisfied in a legally effective manner. The result is a structure that appears complete at signing but begins to fracture at the first point of stress.
The governing principle for any vendor loan in a Swiss SME acquisition is bankability: if the cantonal bank would not accept the terms of the vendor loan as structured — the ranking, the amortization schedule, the documentation, the standstill clauses — those terms are not durable in practice, regardless of how well-intentioned the parties may be.
Market observations in this article are drawn from publicly available practitioner sources including SGNafo-Praxis, Nachfolgeportal, ASSETRAS, and the Schwyzer Kantonalbank. Nothing in this article constitutes financial, legal, or tax advice. Readers should engage qualified advisors for transaction-specific guidance.
