What is a retainer fee for an M&A advisor and is it refundable?
A retainer fee compensates an M&A advisor for engagement work before a deal closes. For M&A advisors on lower middle-market transactions, the standard structure is a monthly retainer of $5,000 to $25,000 per month paid throughout the engagement — typically 6 to 12 months. Most retainers are non-refundable but creditable against the success fee at closing, meaning they reduce your final commission if the deal closes and are kept by the advisor if it does not.
What a retainer fee is and why advisors charge it
A retainer typically covers the advisor's initial work: business valuation, preparing the information memorandum, developing marketing materials, and establishing the engagement framework.
Retainers also serve as a qualification mechanism. Advisors use them to ensure seller commitment and filter out prospects who may not be serious about completing a sale.
Typical retainer amounts in Canada
For M&A advisors on lower middle-market transactions ($1M–$10M), the standard structure is a monthly retainer of $5,000 to $25,000 per month paid throughout the engagement — typically 6 to 12 months. Most engagements fall toward the lower end of that range; complex transactions with institutional buyers or extended timelines may reach the upper end.
Some advisors instead charge a one-time engagement fee at signing — commonly $15,000 to $75,000 for lower middle-market transactions — rather than a recurring monthly structure. Both cover similar preparatory work (valuation, information memorandum, marketing materials), but the one-time fee front-loads the cost while the monthly structure distributes it across the engagement.
Business brokers handling smaller transactions (under $1M) typically do not charge retainers, relying instead on success fees only.
Whether retainers are refundable or creditable
Most M&A advisor retainers are non-refundable but creditable against the success fee at closing. If the deal closes, the retainer amount is deducted from the final commission you owe. If the deal does not close, the advisor keeps the retainer regardless of the reason for transaction failure.
Some advisors structure retainers as fully non-refundable and non-creditable, treating them as separate compensation for preliminary work regardless of transaction outcome. A smaller number offer tiered retainer structures where portions are due at specific milestones (completion of valuation, receipt of a letter of intent).
The refundability and creditability of retainers is always negotiable and should be explicitly stated in the engagement letter before you sign.
How retainers differ from success fees
Retainers are distinct from success fees, which are the commission the advisor earns on the final sale price. Success fees in Canada typically range from 2% to 10% depending on deal size, often using structures like the Lehman Formula. The retainer is paid upfront; the success fee is paid at closing. If your retainer is creditable, it reduces the success fee owed — but it does not replace it.
When you might negotiate retainer terms
Sellers with highly marketable businesses or multiple competing advisor proposals may have leverage to negotiate better retainer terms. This could mean a lower upfront amount, full creditability against the success fee, or tiered payment schedules tied to milestones rather than a single upfront charge.
Before engaging an advisor, clarify in writing whether the retainer is refundable, creditable, or neither — and under what conditions.
This article is for informational purposes only and does not constitute financial, legal, or business advice. Every business sale is different. Before making decisions about engaging an advisor or agreeing to fee structures, consult a qualified professional familiar with your specific situation.
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