Choosing an M&A advisor is one of the most consequential decisions you will make in the entire exit process. Get it right, and you have an experienced advocate in your corner — someone who knows the market, knows the buyers, and knows how to negotiate a deal that genuinely serves your interests. Get it wrong, and you risk a process that drags on for months, a valuation that undersells what you have built, or a deal that falls apart in due diligence.
The problem is that most business owners only go through this process once. Advisors do it every day. That asymmetry puts sellers at a disadvantage from the very first conversation — unless they know the right questions to ask.
This guide gives you that framework. It is designed to be used in the room, when you are sitting across from an advisor who wants your mandate.
Why the Choice of Advisor Matters More Than Most Owners Realise
There is a common assumption that all M&A advisors offer roughly the same service and that the differences are mostly cosmetic — fees, presentation style, firm name. That assumption is wrong, and it costs sellers real money.
The advisor you choose determines:
- Which buyers see your business — and how it is positioned to them
- How your valuation is defended — and whether you can hold it under pressure
- How due diligence is managed — and whether the process derails at the final stage
- How the negotiation is conducted — and whether the final structure genuinely reflects your interests
According to research published by the Exit Planning Institute, sellers who engage experienced advisors achieve materially better outcomes than those who attempt to manage the process alone — not just in headline price, but in deal structure, certainty of close, and time to completion.
The right advisor does not just open doors. They change the outcome.
The Landscape: What Types of M&A Advisors Exist?
Before you can evaluate an advisor, it helps to understand the different types operating in the lower mid-market.
Business Brokers
Typically work on smaller transactions — often businesses valued under $1m. They usually operate on a success-fee-only basis and may represent a large volume of listings simultaneously. Attention per client can be limited.
Boutique M&A Advisory Firms
Specialist firms that focus on a specific deal size range or sector. They typically offer a more hands-on, bespoke service and work with a smaller number of clients at any given time. This is the category most relevant to businesses with EBITDA under $2m.
Mid-Market Investment Banks
Handle larger transactions, typically $10m+ in enterprise value. For smaller businesses, the attention and resourcing you receive from a mid-market bank may not justify the engagement.
Fractional M&A Advisors
A newer and increasingly popular model — particularly relevant for smaller businesses — where senior M&A expertise is provided on a flexible basis without the cost structure of a full engagement. This model has grown significantly as more experienced professionals have left larger institutions to work independently.
Understanding where a firm sits in this landscape helps you assess whether they are the right fit for your deal size and complexity.
The Questions That Separate Good Advisors From the Rest
The following questions are designed to be asked directly, in a first or second meeting. A strong advisor will welcome them. An advisor who hedges, deflects, or becomes defensive is telling you something important.
On Experience and Track Record
“How many transactions have you closed in the past 24 months, and can you share anonymised case studies?”
Volume matters, but relevance matters more. An advisor who has closed twenty deals in sectors unrelated to yours is less valuable than one who has closed five deals in businesses like yours. Ask specifically about deals of similar size, sector, and complexity.
“Can you provide references from sellers — not buyers — you have worked with?”
Buyer references tell you the advisor is easy to work with. Seller references tell you the advisor fought for the right outcome. These are different things. Ask for at least two or three seller references you can speak to directly.
“Have you ever failed to close a deal after signing a mandate? What happened?”
Every advisor has had deals that did not close. The question is not whether — it is why, and what they learned. An honest answer here is a green flag. An advisor who claims a perfect record is either very new or not being straight with you.
On Process and Approach
“Walk me through exactly what happens between signing and close.”
You are looking for specificity. A good advisor will walk you through buyer profiling, outreach, information memorandum preparation, indication of interest, management presentations, exclusivity, due diligence, and close — with approximate timeframes for each stage. Vague answers about “running a process” should concern you.
“How many clients are you currently working with, and how will you ensure my deal gets sufficient attention?”
An advisor managing fifteen active mandates simultaneously cannot give your deal the attention it deserves. There is no universal right answer here — but the question forces a conversation about capacity and prioritisation.
“Who will actually be working on my deal day to day?”
In larger firms, the senior partner wins the mandate and then delegates execution to junior staff. This is not inherently a problem, but you should know exactly who you will be dealing with throughout the process and what their experience level is.
On Valuation
“What do you think my business is worth, and how did you arrive at that number?”
Be cautious of advisors who give you a number in the first meeting without having reviewed your financials in detail. Be equally cautious of advisors who give you an inflated number to win your mandate — a practice known as “buy-in” or “overpricing to win.” An advisor who tells you what you want to hear upfront is likely to manage expectations downward later, often at the worst possible moment in the process.
A strong advisor will give you a range, explain the methodology behind it — typically EBITDA multiples based on comparable transactions — and be honest about the factors that could move that range up or down.
“What comparable transactions have you used to benchmark my business, and how recent are they?”
Transaction data from three years ago may not reflect current market conditions. Ask for recency and relevance. If the advisor cannot point to specific transactions, they are estimating.
On Fees
“How is your fee structured, and what does it include?”
Most M&A advisors operate on a combination of a retainer and a success fee. The retainer covers the cost of preparing your business for market — the information memorandum, financial analysis, buyer research. The success fee is a percentage of the transaction value, typically ranging from 3% to 10% depending on deal size.
Be wary of advisors who work on a success-fee-only basis for small transactions. It sounds attractive, but it creates perverse incentives — the advisor is motivated to close any deal quickly rather than find the best deal for you. It also often means that deal preparation receives minimal investment.
“Is your success fee calculated on enterprise value, equity value, or consideration received?”
This is a detail that can have a material impact on the amount you pay. Understand exactly what the fee is calculated against before you sign.
“What happens if the deal does not close? What are my obligations?”
Understand the terms under which you can exit the engagement, what fees are owed if the deal does not complete, and whether there is a tail period during which the advisor can still claim a fee if you transact with a buyer they introduced.
On Buyers
“How do you identify and approach buyers, and what does your buyer network look like?”
An advisor without a proprietary buyer network is starting from scratch every time. Ask specifically about their relationships with strategic buyers, family offices, private equity firms, and international acquirers. Ask how they will position your business to buyers who might not be actively looking — because the best buyer for your business may not have you on their radar yet.
“How do you protect confidentiality during the outreach process?”
Your staff, customers, and competitors should not learn that your business is for sale before you are ready. A rigorous advisor will use blind teasers, staged disclosure, and NDAs at every step. If they cannot articulate their confidentiality protocol clearly, it is a concern.
Red Flags: What to Watch Out For
Beyond the answers to specific questions, there are behavioural and structural red flags that should give you pause.
Inflated valuations to win the mandate. If an advisor’s suggested valuation is significantly higher than what others have indicated — without a compelling, data-backed reason — be sceptical. This is a common tactic to win business, followed by a managed expectation reset once you are committed.
Pressure to sign quickly. A good advisor will give you time to think, speak to references, and ask further questions. Anyone pushing for an immediate commitment has their interests in mind, not yours.
Lack of a defined process. If an advisor cannot describe their process in specific terms — stages, timelines, deliverables — they do not have one. What they have is a network and a hope.
Junior execution on a senior pitch. As noted above, understand who will actually be doing the work. The credentials of the firm mean little if the person managing your deal is six months out of university.
No relevant sector or deal size experience. A generalist advisor who has never sold a business of your size or type is learning on your transaction.
The Shortlist Checklist
When you have completed your meetings, use this checklist to compare firms:
- Relevant transaction experience at your deal size
- Seller references available and contactable
- Clear, specific process with defined stages and timelines
- Realistic, defensible valuation with comparable evidence
- Transparent fee structure with no ambiguity on calculation basis
- Senior resource committed to your deal
- Credible buyer network with proactive outreach capability
- Clear confidentiality protocol
- Honest about risks and what could go wrong
- You feel they will fight for your interests, not just close a deal
The last point is the hardest to quantify and the most important. After all the meetings and all the documents, trust your instincts about whether this person will be genuinely in your corner when the deal gets difficult — and it almost always does.
A Final Thought
The M&A advisory market, particularly in the lower mid-market, is not uniformly regulated. Entry barriers are low, and the quality of advice varies enormously. Taking the time to run a rigorous selection process — using the questions above — is not being difficult. It is being sensible. The best advisors will respect you for it.
At Thireos Consulting Group, we work with a small number of carefully selected clients at any one time, and we welcome exactly this level of scrutiny. If you are in the process of choosing an advisor, we are happy to have a frank, no-obligation conversation about whether we are the right fit for your situation.
