M&A Advisor Success Fee Percentage

An M&A advisor success fee percentage is the percentage paid if a transaction closes. Sellers should check the value basis, cap, minimum, expenses, tail, and payment trigger before comparing percentages. Lyndon Advisory charges 2.5% of enterprise value, capped at US$750,000, with no retainer, no monthly fee, no upfront fee, and no expense recharge.

For the full seller process, read How to Sell a Business. A success fee is only one part of advisor selection.

How Success Fee Percentages Work

Term	What it means	Seller question
Percentage	The stated rate applied to the transaction value	What is the all-in dollar amount?
Fee basis	Enterprise value, equity value, or transaction value	Does it include debt, rollover, earnout, or assumed liabilities?
Cap	Maximum dollar fee	Does the effective rate fall as value rises?
Minimum	Floor payment regardless of sale size	Is the percentage misleading for smaller deals?
Retainer	Pre-closing payments	Are they credited against success fee?
Expenses	Costs outside the success fee	Are they recharged, capped, and approved?
Trigger	When the fee becomes payable	Is payment due only at closing?

Axial’s 2026 M&A Fee Guide shows that lower-middle-market advisors use different success-fee, engagement-fee, and expense structures. The headline percentage is therefore not enough.

Lyndon’s Percentage And Cap

Enterprise value	Lyndon success fee	Effective percentage
US$10M	US$250,000	2.50%
US$25M	US$625,000	2.50%
US$50M	US$750,000	1.50%
US$100M	US$750,000	0.75%

The capped percentage model keeps incentives tied to closing while letting sellers keep more upside at larger sale values. It is especially useful when the advisor still runs an institutional-quality process: valuation, buyer materials, financial model, investment story, buyer map, targeted outreach, negotiation, and diligence.

Percentage vs Process Quality

Seller comparison	Weak answer	Strong answer
Lower percentage	Less work, fewer buyers, passive listing	Leaner overhead with full sell-side process
Higher percentage	Large team but unclear senior involvement	Clear senior ownership and buyer strategy
Capped fee	Cap used as a sales line only	Cap plus full scope and closing-only payment
No retainer	Minimal preparation	No retainer plus valuation, materials, outreach, and negotiation

CFI’s CIM overview helps illustrate why process scope matters: buyer-facing materials are central to serious sell-side advisory. A lower percentage should not remove them.

“A success-fee percentage is not the whole fee. Sellers should ask what value base it applies to, whether it is capped, when it is payable, and whether the advisor is still doing the work needed to create a competitive process.”

— Daniel Bae, Founder & CEO, Lyndon Advisory

Next Step

Situation	Best next step
You want to calculate fee dollars	Use the fee calculator
You want Lyndon’s capped percentage	Review Lyndon fees
You want a seller-fit review	Submit a confidential valuation inquiry

For related reading, see M&A Advisor Fee Schedule, Lehman Formula vs Capped Success Fee, Capped Success Fee M&A Advisor, M&A Advisor Fee Cap vs Minimum Fee, and M&A Advisory Fees.