Vendor loan: Financing and securing an SME acquisition in 2026

How deferring part of the price unlocks the acquisition?

Introduction: when the price alone is no longer enough to close the deal

What do you do when the buyer wants to buy, the seller wants to sell, but the financing plan leaves a gap of a few hundred thousand francs? Often, the solution comes neither from the bank nor from an additional equity injection, but from the seller themselves. A vendor loan (or seller loan) consists, for the seller, in agreeing to defer the payment of part of the price, in effect granting a loan to the buyer. Far from being a favour, it is a structuring tool that unlocks acquisitions that classic financing cannot close on its own.

The vendor loan is an old mechanism, framed and documented by the actors of business transfer.

"The vendor loan allows the buyer to pay part of the price in instalments, the seller acting as a lender.", Bpifrance Création, financing of business acquisitions.

In 2026, three forces converge to make it a market reflex again. First, the valuation gap between sellers and buyers remains wide, and creative structures, vendor loans and earn-outs, are once more the way to bridge it, as mid-market studies observe. Second, bank financing conditions remain selective, which leaves an intermediate financing need to cover. Third, in a market where exits are harder, the seller who supports the acquisition gives themselves the means to sell at the right price rather than at a discount. This article defines the vendor loan, traces its origin, explains why and how to structure it, how to discount a deferred price and value an earn-out as a real option, when to use it, who to entrust it to, its advantages and limits, illustrates it with two worked France-Switzerland cases, then sets out five mistakes to avoid, a ten-question FAQ and a summary.

Structure the financing of your acquisition before a funding gap kills the deal

Before going into detail, keep the essential in mind: a well-structured vendor loan is not a gift to the buyer, it is a lever serving the seller. It unlocks the funding round, secures the price and aligns the interests of both parties on the success of the acquisition.

If you are preparing the sale of your SME or the acquisition of a company, and the financing plan is stuck on a gap to bridge, book a 30-minute conversation with Hectelion to frame a vendor loan that is useful, proportionate and secured.

Our work draws on rigorous financial structuring and on a France-Switzerland reading of risk, in full independence from traditional financial intermediaries.

Definition: what is a vendor loan (seller loan)?

A vendor loan is a financing whereby the seller agrees that the buyer pays part of the sale price on a deferred basis, over an agreed period and generally with interest. Economically, the seller behaves like a lender: they turn a fraction of the price into a receivable on the buyer, repayable according to a schedule. It is an acquisition financing tool that complements the buyer's equity and senior bank debt.

The vendor loan differs from two neighbouring mechanisms. Unlike the earn-out, it bears on a certain amount fixed in advance, whereas the earn-out is a conditional price complement, indexed on future performance. Unlike price adjustment mechanisms such as the locked box or completion accounts, it does not modify the price: it simply spreads its payment. The vendor loan generally bears on a portion of 10 to 30 percent of the price, over a period of two to five years, at an interest rate negotiated between the parties.

One framing point is essential. The vendor loan relates to the structuring of transactions on unlisted companies, within the remit of an independent valuation and advisory firm. Hectelion is not FINMA-licensed and does not act on listed transactions.

Origin: from deferred payment to the closing lever of SME acquisitions

The vendor loan is as old as instalment sales: agreeing to be paid in several instalments is an immemorial commercial practice. Applied to business transfer, it took hold as a transmission tool as soon as the price of SMEs exceeded the immediate financing capacity of buyers, often individuals or management teams with limited equity.

It spread particularly in family transfers and internal buy-outs, where trust between the parties is strong, then in leveraged buy-outs of the MBO type, where it plays a role of intermediate financing between equity and senior debt. The institutional actors of business transfer, such as Bpifrance Création or buyer networks, have made it a documented standard of acquisition financing. In a more selective M&A market, where banks lend cautiously and the valuation gap persists, the vendor loan regains all its usefulness as a closing lever.

Why use a vendor loan

Using a vendor loan answers five converging motivations.

First, it unlocks the financing plan. When the buyer's equity and bank debt do not cover the price, the vendor loan bridges the gap and makes the transaction possible, where it would otherwise fail.
Second, it defends the price. Rather than lowering their valuation to match the buyer's financing capacity, the seller maintains their price and spreads part of its payment. The vendor loan becomes an alternative to a discount.
Third, it acts as a bank lever. Subordinated to senior debt, the vendor loan is often treated as quasi-equity by the bank, which increases its lending capacity and improves the buyer's funding round.
Fourth, it sends a signal of confidence. A seller who agrees to be paid over several years demonstrates their conviction in the soundness of the company sold, which reassures the bank and the buyer.
Fifth, it aligns interests. As long as it is not repaid, the seller remains economically interested in the success of the acquisition, which facilitates the handover and transition.

How a vendor loan is built

Structuring a vendor loan follows a six-step methodology that combines the logic of financing with legal security.

Step 1: calibrate the portion. You determine the share of the price financed by the vendor loan, generally 10 to 30 percent. Too low, it unlocks nothing; too high, it makes the seller bear a disproportionate risk and deprives the transaction of durable financing.

Step 2: set the term and schedule. The term most often ranges from two to five years. The schedule may provide for straight-line repayment, an amortisation deferral while senior debt has priority, or an in fine repayment. It must be compatible with the cash capacity of the acquired company.

Step 3: negotiate the interest rate. The vendor loan bears interest, at a negotiated rate that reflects the risk taken by the seller and its subordination. A realistic rate, consistent with the market, avoids requalification and fairly rewards the seller's wait.

Step 4: organise the subordination. The vendor loan is almost always subordinated to senior bank debt: it is repaid only after it, under an intercreditor agreement. This subordination is the condition of the bank leverage effect, but it increases the seller's risk.

Step 5: secure it with collateral. To protect themselves, the seller requires guarantees: pledge of the shares sold or of the business, a buyer guarantee, a first-demand guarantee, or an adapted retention-of-title clause. This collateral is the heart of vendor loan security.

Step 6: draft the protective clauses. The contract provides for an accelerated-maturity clause in the event of default, non-payment or change of control, and articulates with the asset and liability warranty. A set-off between the vendor loan and a possible warranty claim may be organised. The quality of this drafting conditions the security of the arrangement.

Discounting the deferred price: what a vendor loan is really worth

A price paid partly through a vendor loan does not have the same economic value as the same amount settled in cash. A franc received in four years is worth less than a franc received today, and it is worth all the less as it is uncertain. To compare an all-cash offer with an offer including a vendor loan, you must therefore discount the deferred flows at a discount rate that reflects both the time value of money and the buyer's credit risk.

Two effects combine. First the time value: the longer the schedule, the lower the present value of the payments. Then credit risk and subordination: because the vendor loan is repaid after senior bank debt, the rate that fairly rewards this risk is higher than the risk-free rate, often close to that of subordinated or mezzanine debt. The higher this required rate, the lower the present value of the vendor loan.

Take the vendor loan of the first case: 3 MCHF over 4 years, at 5 percent interest, principal repaid at maturity. The seller receives 0.15 MCHF of interest each year, then 3.15 MCHF in the fourth year. If the market requires 8 percent to bear this subordinated risk, the present value of these flows comes out at around 2.70 MCHF, against 3.00 MCHF of nominal value. The economic price of the transaction is therefore not 15 MCHF, but of the order of 14.70 MCHF, that is, 12 MCHF in cash plus 2.70 MCHF of discounted vendor loan.

The lesson is twofold. For the seller, a vendor loan granted at a rate below the real risk amounts to granting an implicit discount: here, lending at 5 percent when the risk is worth 8 costs around 0.30 MCHF of value. To compare two offers, you must always reason in present value, the economic price, and not in nominal value. A higher headline price, but heavily deferred and weakly remunerated, can be worth less than a lower nominal price paid in cash.

Valuing the earn-out: the logic of the real option

When the vendor loan is accompanied by an earn-out, as in our second case, the difficulty changes nature. The vendor loan bears on a certain amount that simply has to be discounted; the earn-out bears on a conditional amount that has to be valued like an option. Its value is never its nominal maximum, but the discounted expectation of an uncertain flow.

The earn-out, a conditional asset valued like an option

An earn-out will only be paid if the company reaches a performance target, most often a level of EBITDA or revenue. Its value therefore depends on the probability of reaching that target, itself a function of the gap between expected performance and the threshold, the volatility of the chosen metric and the measurement horizon. This is exactly the logic of an option: you do not pay the maximum gain, you pay the weighted probability of obtaining it. In practice, the earn-out is valued through an option model, of the Black-Scholes type for simple structures, or by Monte Carlo simulation for multi-year and multi-threshold clauses. This valuation is not academic: IFRS 3 requires the conditional price complement to be recognised at fair value at acquisition, then remeasured.

The capped earn-out (cap): a call option spread

Most earn-outs are capped: the seller receives a fraction of the performance above the target, but within the limit of a maximum amount. The payoff profile, nil below the target, rising above it, then blocked at the cap, is that of a call option spread, that is, a call option at the target level, from which a call option at the level where the cap is reached is subtracted. Concretely, a capped earn-out is worth less than an uncapped one, since the seller gives up the exceptional performance beyond the cap. Valuing this spread gives the fair price of the clause, and lets the seller know what they actually concede by accepting a cap.

The earn-out with floor and cap: a tunnel

Some clauses go further and guarantee a minimum complement, a floor, while keeping a cap. The conditional complement then moves within a tunnel, bounded below by the floor and above by the cap. This profile corresponds to a combination of options, a collar, which shares the risk symmetrically: the seller secures a minimum whatever the performance, the buyer caps their maximum charge. The floor increases the value of the earn-out for the seller, and therefore its cost for the buyer; it is a negotiation cursor. A rigorous valuation of these conditional instruments is what allows both parties to negotiate in full knowledge, rather than dispute after the fact over a poorly understood figure.

When to use a vendor loan

The vendor loan is called for in several triggering situations. First, when there is a financing gap: the buyer has equity and a bank agreement, but a tranche is missing to reach the price. Then, when the bank caps its contribution and requires a complement treated as quasi-equity to grant the senior debt.

It is particularly suited to family transfers and internal buy-outs by managers, where trust allows the payment to be spread, and to acquisitions by an individual whose equity is limited but the project sound. It is also relevant when there is a valuation gap that the seller does not want to turn into a discount, or in a buyer-friendly market where supporting the financing makes the difference. Conversely, a seller who needs the entire sale proceeds immediately, or a buyer already fully financed, have no interest in using it.

Who to entrust the structuring of your vendor loan to

Structuring a vendor loan requires bringing together three skills rarely found at once. First, mastery of acquisition financing, to calibrate the portion, the term and the articulation with senior debt, and build a funding round that holds. Second, a valuation capacity, to link the vendor loan to the real value of the company and to its repayment capacity, measured on normalised EBITDA. Third, legal rigour, to secure the arrangement with the right collateral and the right clauses.

Hectelion brings together this dual France-Switzerland expertise and conducts its engagements in full economic independence from traditional financial intermediaries. We act on transactions from 2 to 500 MCHF, drawing on an IVSC-aligned valuation methodology, rigorous financial structuring and, for sale transactions, M&A advisory that places the vendor loan within the overall transmission strategy.

Advantages: unlocking financing, defended price and aligned interests

The first advantage of the vendor loan is unlocking financing. By bridging the gap between the buyer's financing capacity and the price, it makes possible acquisitions that would otherwise fail. It is often the missing piece of the funding round.

The second advantage is the defended price. The vendor loan lets the seller maintain their valuation rather than reduce it to match the buyer's cash; instalment replaces discount. The third advantage is aligned interests: as long as it is not repaid, the seller remains economically tied to the success of the acquisition, which facilitates the handover, reassures the bank and credibilises the project. Add a potential tax interest, the spreading of the taxation of the capital gain being able, under conditions and depending on the applicable regimes, to accompany the instalment of the payment.

Limits: credit risk, subordination and locked-in proceeds

The first limit relates to credit risk. By deferring part of the price, the seller is exposed to the risk that the buyer does not repay, if the company deteriorates. This risk is managed by collateral and by a rigorous analysis of repayment capacity, but it never disappears entirely.

The second limit is subordination. Because it is repaid after senior bank debt, the vendor loan is a high-risk financing: in the event of difficulty, the seller is served last. The third limit is the locking-in of the sale proceeds: the seller does not receive the entire price immediately, which may hinder a personal wealth project or a reinvestment. Finally, the vendor loan does not replace a preparation of the sale: it finances the acquisition, but dispenses with neither a vendor due diligence to objectify value, nor a solid contractual framework.

The 5 mistakes to avoid

Mistake 1: Oversizing the financed portion

Wanting to finance 50 percent of the price by vendor loan makes the seller bear a disproportionate risk and deprives the transaction of durable financing. A portion of 10 to 30 percent unlocks the funding round without turning the seller into the main financier of their own sale. Beyond that, it is the sign that the buyer is undercapitalised or that the price is poorly calibrated.

Mistake 2: Neglecting the collateral

Granting a vendor loan without a share pledge, guarantee or security amounts to lending unsecured. In the event of default, the seller finds themselves an unsecured creditor, served after everyone else. Collateral is not a mark of distrust, it is the condition of a responsible vendor loan.

Mistake 3: Setting an unrealistic interest rate

A vendor loan at a nil or derisory rate deprives the seller of the remuneration of their risk and may be requalified for tax purposes. Conversely, an excessive rate strangles the buyer's cash and weakens the acquisition. The rate must reflect the real risk and the subordination, consistent with market conditions.

Mistake 4: Ignoring the real repayment capacity

Structuring a vendor loan without checking that the acquired company generates the flows needed to repay it, after servicing the senior debt, exposes the seller to a foreseeable default. Repayment capacity is assessed on normalised EBITDA and on available cash, not on the buyer's optimistic projections.

Mistake 5: Botching the articulation with bank debt and the warranty

A vendor loan poorly articulated with senior debt, without a clear subordination agreement, or poorly coordinated with the asset and liability warranty, creates conflicts between creditors and legal blind spots. The coherence of the whole contractual set, senior debt, vendor loan, collateral and warranty, is what really secures the arrangement.

Case 1: closing vendor loan on the acquisition of a France-Switzerland industrial SME at 15 MCHF

A France-Switzerland industrial SME is sold to its management team in an MBO, on a valuation of 15 MCHF, consistent with a multiple of 6 times a normalised EBITDA of 2.5 MCHF. The buyer's funding round reaches its limits: 4 MCHF of equity and 8 MCHF of senior bank debt, that is, 12 MCHF raised. 3 MCHF are missing to reach the price, and the bank refuses to go beyond 8 MCHF of senior debt.

The seller then grants a vendor loan of 3 MCHF, that is, 20 percent of the price, over 4 years, at a rate of 5 percent, subordinated to senior debt and secured by a share pledge. The funding round is thus closed: 4 MCHF of equity, 8 MCHF of senior debt and 3 MCHF of vendor loan, equal to the 15 MCHF price. Treated as quasi-equity, the vendor loan reassured the bank and enabled the acquisition. The seller defended their price of 15 MCHF instead of bringing it down to 12 MCHF for lack of financing, while receiving 12 MCHF at closing and the balance spread with interest.

Case 2: vendor loan and earn-out combined on a services SME at 8 M EUR

A French services SME is sold on a requested valuation of 8 M EUR. The buyer considers the growth trajectory uncertain and does not want to pay in advance for a performance not yet achieved. Seller and buyer agree on a structure combining two tools. The firm price is set at 6 M EUR, financed by 1.5 M EUR of equity, 3 M EUR of senior debt and a vendor loan of 1.5 M EUR, that is, 25 percent of the firm price, over 3 years. A conditional earn-out of 2 M EUR at most, over 2 years, completes the arrangement if EBITDA reaches the agreed target.

The combination resolves the disagreement. The seller keeps a full potential price of 8 M EUR, 6 M EUR firm plus 2 M EUR of earn-out, while agreeing to spread 1.5 M EUR through the vendor loan. The buyer pays the conditional part only if the performance materialises, which protects their cash. The vendor loan unlocks the financing of the firm price, the earn-out settles the disagreement on future value. A set-off is provided between the vendor loan and a possible claim under the asset and liability warranty, securing both parties.

A word from the founder

"In the transmissions we support, the vendor loan is not a sign of the seller's weakness, it is a sign of strength. The one who supports the financing of their acquisition sells better, and often at a higher price, than the one who demands everything, in cash, right away."

"My conviction is that a good vendor loan is calibrated like a financing, not like a concession. The portion, the rate, the subordination and the collateral must be thought together, consistent with the real repayment capacity of the company."

"Our role as an independent valuer and structurer is to link the vendor loan to value, secure it legally and articulate it with bank debt. It is this rigour that turns an agreement in principle into a deal that holds."

Aristide Ruot, Ph.D.
Founder | Chief Executive Officer, Hectelion SA

FAQ: the 10 essential questions on the vendor loan

Introduction: what to keep in mind before the questions

The questions below cover the most frequent concerns of sellers and buyers considering a vendor loan. The guiding idea is simple: the vendor loan is a financing, not a favour. Well calibrated and well secured, it unlocks the acquisition and defends the price; poorly structured, it makes the seller bear an avoidable risk.

Q1: What exactly is a vendor loan?

It is a financing whereby the seller agrees to be paid on a deferred basis on part of the sale price, acting as a lender. The buyer settles part at closing and the balance according to a schedule, generally with interest. The vendor loan most often bears on 10 to 30 percent of the price, over two to five years.

Q2: What is the difference between a vendor loan and an earn-out?

The vendor loan bears on a certain amount, fixed in advance, simply paid later. The earn-out is a conditional price complement, indexed on the company's future performance. The first spreads an acquired amount, the second subordinates an amount to a result. The two can be combined, as in our second worked case.

Q3: Does the vendor loan bear interest?

Yes, in principle. The seller lends a sum and takes a risk: it is legitimate that this loan be remunerated at a negotiated rate, consistent with the market and with the subordination. A nil rate deprives the seller of their remuneration and may be requalified for tax purposes. The rate must remain bearable for the buyer's cash.

Q4: What portion of the price can be financed by vendor loan?

In practice, 10 to 30 percent of the price. Below that, the unlocking effect is limited; above it, the seller becomes the main financier of their own sale and bears a disproportionate risk. The portion is calibrated according to the financing gap to bridge and the repayment capacity of the company.

Q5: How does the seller protect themselves against the risk of non-payment?

Through collateral: pledge of the shares sold or of the business, a buyer guarantee, a first-demand guarantee, and accelerated-maturity clauses in the event of default. Protection also comes from a rigorous analysis of repayment capacity upstream. A responsible vendor loan is a secured vendor loan.

Q6: Does the vendor loan help obtain the bank debt?

Often, yes. Subordinated to senior debt, the vendor loan is frequently treated as quasi-equity by the bank, which strengthens the funding round and its lending capacity. It also sends a signal of confidence: a seller who agrees to be paid over several years credibilises the soundness of the company sold.

Q7: What are the risks for the seller?

Mainly credit risk, if the buyer does not repay, and subordination, which places the seller behind the bank in the event of difficulty. To this is added the locking-in of part of the sale proceeds. These risks are managed by collateral, a reasonable portion and a serious analysis of repayment capacity, but they do not disappear.

Q8: Is there a tax interest in the vendor loan?

There may be, under conditions and depending on the regimes applicable in France and Switzerland: the instalment of the payment may, in certain cases, accompany a spreading of the taxation of the capital gain. This aspect is handled case by case with a tax adviser; it must never take precedence over the financial and legal security of the vendor loan.

Q9: Is the vendor loan used in family transfers?

It is even one of its favoured grounds. In a family transfer or an internal buy-out, trust between the parties facilitates the instalment of the payment and the seller's handover. It nonetheless remains advisable to formalise it rigorously, with a rate, a schedule and collateral, to avoid misunderstandings and secure each party.

Q10: Who should structure a vendor loan?

A third party that masters acquisition financing, valuation and legal security at once. Entrusting only the drafting of the contract to a lawyer, without linking the vendor loan to value and repayment capacity, leaves blind spots. An independent valuation and structuring firm is best placed to calibrate, secure and articulate the whole.

Conclusion: making the vendor loan a lever, not a concession

The vendor loan is not a stopgap that the seller concedes reluctantly, it is a structuring tool serving the transaction. By agreeing to spread part of the price, the seller unlocks a funding round that was stuck on a financing gap, defends their valuation rather than selling cheap, and aligns their interests on the success of the acquisition. It still has to be calibrated like a financing: reasonable portion, realistic rate, assumed subordination and solid collateral.

In a more selective M&A market, where banks lend cautiously and the valuation gap persists, the vendor loan regains all its usefulness. The two worked cases show it: 3 MCHF of vendor loan close the acquisition of an industrial SME at 15 MCHF that the bank alone did not finance, and a combination of vendor loan and earn-out resolves a valuation disagreement on a services SME at 8 M EUR. Well structured, secured by the right collateral and articulated with bank debt, the vendor loan turns an agreement in principle into a deal that holds. That is precisely the craft of an independent valuer and structurer.

Article summary

The vendor loan is a financing whereby the seller agrees to be paid on a deferred basis on part of the sale price, acting as a lender. It differs from the earn-out, which is a conditional complement, and from price adjustment mechanisms, which modify the price without spreading it. It generally bears on 10 to 30 percent of the price, over two to five years, with interest and collateral.

Applied to an acquisition, the vendor loan acts on three levers: it unlocks financing by bridging the gap between the buyer's capacity and the price, it defends the price by replacing the discount with instalment, and it aligns interests by keeping the seller economically tied to the success of the acquisition. Its success presupposes a reasonable portion, a realistic rate, a clear subordination to senior debt and solid collateral, within a contractual set consistent with the asset and liability warranty.

The two practical cases quantify the stake: a vendor loan of 3 MCHF, that is, 20 percent of the price, closes the acquisition of a France-Switzerland industrial SME at 15 MCHF that bank debt alone did not finance, and a combination of 1.5 M EUR of vendor loan and 2 M EUR of earn-out resolves a valuation disagreement on a services SME. The five mistakes to avoid recall the necessary discipline: do not oversize the portion, do not neglect the collateral, do not set an unrealistic rate, do not ignore the repayment capacity and do not botch the articulation with bank debt and the warranty. Hectelion, an independent France-Switzerland firm, structures these acquisition financings on transactions from 2 to 500 MCHF.