Success-based fees of 5% on a $3 million sale come out to $150,000. That can look steep.
But if the broker’s competitive process brings in 15% more than what you’d have gotten on your own, that’s $450,000 in added value. The math is quick.
The three compensation models
A business broker can be paid in three ways. Each model has different implications for the seller.
The retainer
The seller pays a fixed amount — monthly or lump-sum — from the start of the engagement.
Upside: the broker is committed and paid regardless of the outcome. Downside: the seller pays even if the transaction doesn’t close.
This model is more common with advisory firms or for very complex engagements.
Success-based fees
The broker only gets paid if the transaction closes. No sale, no fees.
It’s the most common model for SME sales — and the one where interests are most directly aligned. The higher the sale price, the more the broker earns. Success fees are calculated as a percentage of the sale price.
The hybrid
A reduced retainer combined with a reduced success fee. The seller pays an upfront engagement amount, with the balance due at closing.
It’s a compromise between the first two models — and rarer among Quebec SMEs.
The contract that frames this compensation — retainer, success-based fees, or hybrid — is called the engagement letter: a document that spells out duration, exclusivity, deliverables, and exit conditions.
How broker fees are set
For Quebec SMEs, success-based fees are generally set as a percentage of the sale price.
The logic is often regressive: the larger the transaction, the lower the percentage may be. But two transactions of the same size can require very different levels of work.
Most brokers also apply a minimum fee — a floor below which the engagement isn’t economically viable, regardless of the percentage.
A concrete example
Take an SME sold for $3 million with success-based fees of 5%:
$3,000,000 × 5% = $150,000
That amount is paid at closing, out of the sale proceeds. The seller doesn’t write a $150,000 cheque out of pocket — it’s a deduction from the price received.
What makes the percentage vary
- Transaction size: the higher the price, the lower the percentage may be — but the dollar amount still goes up
- File complexity: multiple shareholders, real-estate assets, transition issues, incomplete documentation, or ownership succession questions can change the work required
- Go-to-market work: preparing the file, qualifying buyers, preserving confidentiality, and coordinating the process also shape the engagement
Calculating the ROI
Success-based fees are a cost. But that cost compares against what it brings in — not against zero.
A competitive process changes the price
When a broker takes a business to market, they create a competitive process: several qualified buyers look at the file at the same time.
Competition between buyers pushes the price up. It’s mechanical — when multiple people want the same thing, the seller has leverage.
What we see in the files is that transactions run through a competitive process generally close at a higher price — or on better terms — than what the seller would have gotten negotiating alone with a single buyer.
A broker also protects the probability of closing
A price written into a letter of intent is not money in the seller’s hands yet. A $15 million offer that never closes does not put $15 million in the seller’s pocket.
That is often where the broker’s role becomes most important: qualifying buyers, keeping the process moving, coordinating the professionals, anticipating breaking points, and keeping the transaction alive until closing.
A broker does not guarantee that a sale will close. But a strong process increases the chances that buyer interest becomes a transaction that actually closes.
The size of the gain varies a lot from one file to another. The example below illustrates the price side only: one possible scenario, not a market average, and not a guarantee.
The numbers in an example
Now take a $15 million sale with success-based fees at 5%:
| Scenario | Amount |
|---|---|
| Price with a broker (competitive process) | $15,000,000 |
| Success-based fees (5%) | – $750,000 |
| Net to the seller | $14,250,000 |
| Estimated price without a broker (– 15%) | ~$12,750,000 |
| Net gain from the competitive process | + $1,500,000 |
In this example, the broker “costs” $750,000. But the seller walks away with $1,500,000 more than if they had sold on their own.
That isn’t a guarantee — it’s a pattern we see in well-prepared files. And it’s the economic logic that explains why many SME sellers choose to work with a broker.
Hidden fees to watch for
Success-based fees are the main cost — but they aren’t always the only one.
Here’s what to ask about before signing an engagement:
Marketing fees
Some brokers bill separately for preparing the confidential information memorandum (CIM), advertising, or going-to-market tools. Others fold everything into the success-based fees. Clarify from day one.
File fees
A lump-sum amount at the start of the engagement to cover start-up costs. It isn’t a retainer — it’s a one-time fee.
Early exit fees
If you cancel the engagement before its term, some contracts call for penalties. Read the termination clause carefully.
The tail clause
The tail clause is probably the most important clause to understand in an engagement.
It states that if a buyer identified by the broker during the engagement closes the transaction after the engagement ends — typically within 12 to 24 months — the broker still gets paid.
That’s standard and reasonable: the broker did the work of identifying and qualifying. But the duration and scope of the clause are worth negotiating.
The real cost of selling without a broker
The cost of a broker is measured in fees. The cost of not having one is measured differently.
An owner who sells on their own faces:
- A lower price: with no competitive process, the buyer negotiates from a position of strength
- A longer process: finding, qualifying, and negotiating with buyers takes time — often much more than expected
- Confidentiality risks: with no broker to filter buyers, information about the sale circulates more widely
- An emotional negotiation: selling the business you’ve built over years, facing a buyer who negotiates rationally, creates an imbalance
The real question isn’t how much it costs — it’s how much it pays back.
In many files, a good broker can pay for themselves through the value they create: through the margin they add to price, through the terms they protect, through the mistakes they prevent. The visible cost is the fee. The invisible cost is everything you don’t see when you sell on your own.
And what really matters isn’t just the price: it’s also the experience, the transparency, the references, the process.
Key takeaways:
- Success-based fees are the most common model — paid only at closing, with a more direct alignment of interests
- The percentage varies by engagement — size, complexity, preparation, and risk all matter
- A good broker can pay for themselves through the value created — the competitive process can generate a gain larger than the fees
- The real cost is selling without a broker — lower price, longer process, and the risk of never reaching closing