It is written for private equity teams, search funds, aggregators, holdcos, family offices, and corporates who want to acquire, especially where they lack local sourcing.
Key takeaways
- A buy-side M&A advisor runs an active acquisition search for a buyer: origination, screening, valuation, and process management toward close.
- The standard model pairs a monthly retainer with a success fee at close. Retainers for lower-mid origination mandates commonly run in the $7,500 to $25,000 range per month, credited against the success fee.
- Success fees on smaller deals often follow a Double Lehman scale (10% on the first $1M, 8% on the second, and so on), because the original Lehman scale does not cover the work on a small deal.
- Buy-side mandates are usually non-exclusive and scoped by sector or geography, so you can run an advisor alongside your own channels.
- The clearest case for hiring one is a market where you lack coverage, such as a US buyer sourcing in Europe.
Last updated: July 2026.
What a buy-side M&A advisor does
A buy-side advisor turns an acquisition thesis into a pipeline of real, reachable targets and then helps you close one. The work breaks into four parts, and a good advisor does all four rather than just making introductions.
Origination is the active search: building a target list against your buy-box and reaching owners directly, most of whom are not on the market. Screening and valuation qualify each target and benchmark its price, so what reaches you is vetted rather than raw. Process management covers first conversations, coordination, and support through diligence. Relationship work keeps a warm path to owners who are not yet ready, which matters because many good deals start months before the owner decides to sell.
The role is closest to an outsourced corporate-development function. For a definition of the advisor role in general, the [M&A advisor](/en/ma-advisor) overview is a useful reference, though that page is written from the seller's side.
Buy-side vs sell-side advisor
A buy-side advisor represents the buyer and works to source and secure a target at a sound price, while a sell-side advisor represents the seller and works to run a competitive process for the highest price. The two roles sit on opposite sides of the same deal and are never combined on a single transaction.
| Criterion | Buy-side advisor | Sell-side advisor |
|---|---|---|
| Client | The buyer | The seller |
| Goal | Source and secure a target | Maximize sale price |
| Exclusivity | Usually non-exclusive | Usually exclusive |
| Core work | Origination, screening | Marketing, competitive process |
| Fee base | Retainer plus success | Retainer plus success |
| Typical trigger | Need to deploy, thin sourcing | Decision to sell |
How buy-side advisor fees work
Buy-side engagements pair a monthly retainer with a success fee paid at close, and the retainer is normally credited against that success fee. That credit means the retainer is an advance against the final fee, not an extra cost, and it keeps both sides committed from day one.
Retainers
For lower-middle-market origination mandates, monthly retainers commonly run in the $7,500 to $25,000 range, scaled to the scope and intensity of the search. The retainer funds an active, dedicated search rather than a passive introduction service.
Success fees
Success fees on smaller deals often follow a Double Lehman scale: 10% on the first $1M of value, 8% on the second, 6% on the third, 4% on the fourth, and 2% above. Small deals use this scale because the original Lehman formula does not generate enough fee to justify the six to twelve months of work a deal takes. Here is a worked example on a $4M deal.
| Value band | Rate | Fee |
|---|---|---|
| First $1M | 10% | $100,000 |
| Second $1M | 8% | $80,000 |
| Third $1M | 6% | $60,000 |
| Fourth $1M | 4% | $40,000 |
| Total on $4M | 7% blended | $280,000 |
Figures are illustrative. Actual terms vary by mandate, deal size, and scope.
Looking for a buy-side advisor to source European targets? Submit your acquisition criteria to see how we would run the search.
Get StartedWhen to hire a buy-side advisor
Hire a buy-side advisor when you have capital to deploy and thin sourcing in the market you want, because that is where an active, connected search pays for itself. The role is not always worth it. A large fund with a full origination team buying domestic platforms usually sources in-house and pays no retainer.
The strongest cases are these:
- A new geography. You want targets in a market where you have no network, such as a US buyer sourcing in Europe.
- Add-ons at scale. You need a steady pipeline of bolt-ons for a platform and cannot staff the search internally.
- A search fund. You are one operator with a thin acquisition network, and that network gets thinner across a border.
- A family office or corporate. You acquire occasionally and have no standing deal team.
Cross-border is the clearest trigger. Reaching European owners takes local language, credibility, and time, which is why a US buyer often engages a cross-border advisor rather than build a local network from scratch. The [buy a business in Europe](/en/buy-a-business-in-europe) hub covers how that works, and the companion guide on [building a European acquisition pipeline](/en/blog/building-a-european-acquisition-pipeline) covers the sourcing mechanics.
How FISART runs buy-side mandates
FISART runs cross-border buy-side searches for buyers acquiring in Europe, with an emphasis on off-market origination and pre-valued targets. We combine direct owner outreach with AI-assisted sourcing that widens the pool beyond a personal rolodex, and a personal senior advisor holds the relationships and the process. The technology adds reach. The senior advisor runs the deal.
Mandates are scoped by sector or geography and run on a retainer-plus-success model, with the retainer credited against the success fee.
By Ludwig Schroedl. Ludwig Schroedl is the founder of FISART. An operator who built and sold his own companies, he understands the deal process from both sides of the table.