Mergers and acquisitions are rarely straightforward, and choosing the wrong advisor can cost you millions in lost value or missed opportunities. Your M&A advisor becomes a critical extension of your leadership team, influencing valuation, deal structure, buyer selection, and final terms. Here's how to separate experienced, reliable firms from those just collecting fees.
Why References Matter More Than Credentials Alone
Any advisory firm can list certifications and claim expertise. References reveal whether they deliver results in real market conditions. When an M&A advisor references a deal, you're hearing from someone who actually worked with them under pressure—when valuations are contested, due diligence stalls, or closing timelines compress.
Request at least three references from completed transactions similar in size and industry to yours. A firm advising $5M lifestyle business sales may not have the bandwidth or sophistication for a $50M platform acquisition. Ask each reference:
- Did the advisor accurately predict valuation and final multiples?
- How responsive were they during due diligence and negotiations?
- Were there surprises or hidden costs that weren't disclosed upfront?
- Would they hire the firm again?
Pay attention to hesitation. A lukewarm reference is a red flag.
Track Record: What Numbers to Examine
Look beyond deal count. A firm claiming 200 deals annually across all sizes tells you little. Instead, focus on depth in your niche.
Typical metrics worth scrutinizing:
- Number of transactions closed in your industry (last 3 years)
- Average deal size and range (does it match yours?)
- Average time from engagement to close (typical: 6–12 months for middle-market)
- Client retention for follow-on transactions (sticky relationships signal trust)
- Stated exit multiples vs. market benchmarks (did they beat or miss expectations?)
Request a written track record document. Reputable firms have these readily available. If they're vague or deflect, that's telling. Also ask: what percentage of engaged mandates actually close? A 70% close rate is healthy; anything below 60% suggests either poor deal quality or weak execution.
Experience in Your Specific Situation
M&A advisory isn't monolithic. A firm strong in PE-backed exits may lack experience in strategic buyer negotiations. One skilled at cross-border tech deals may struggle with family office transitions. Ask directly:
- How many deals have you completed for sellers in my industry?
- Have you advised companies at this revenue stage?
- What was the typical buyer profile (financial sponsor, strategic, competitor, private equity)?
- Have you managed transactions in my geography or with international buyers?
The most relevant experience is recent. A firm's standout 2015 deal tells you less than their 2023 and 2024 activity. Markets shift, buyer preferences evolve, and multiples fluctuate. Their current playbook matters.
Transparency on Fees and Costs
M&A advisors typically charge a retainer (often $25,000–$150,000 depending on deal complexity and firm size) plus a success fee, usually structured as a percentage of enterprise value (commonly 1–2% for deals under $100M). Be wary of firms quoting unusually low retainers; they may cut corners on preparation or become financially incentivized to rush you toward any offer.
Ask for a written fee proposal that specifies:
- Retainer amount and what's included
- Success fee percentage and any tiered discounts
- Whether expenses (travel, third-party advisors) are reimbursable
- How success fees are calculated (on gross value, equity value, or specific conditions?)
Understand that lower fees don't guarantee poor service, but they may indicate inexperience or a volume-based model where your deal isn't prioritized.
Evaluating Cultural and Practical Fit
You'll spend months with this advisor in high-stress situations. Beyond credentials, assess:
- Who is your primary contact, and how involved will the senior partner be?
- Are they proactive communicators, or do you chase updates?
- Do they understand your business quickly, or do they require extensive education?
- Are their views on valuation and strategy aligned with yours, or dismissive of your instincts?
A firm with stellar references but a poor interpersonal fit creates friction when you need alignment most.
Getting Started
Mercoly connects business owners with vetted M&A advisory firms you can compare side-by-side, complete with verified track records and client feedback—streamlining your vetting process significantly.
Frequently Asked Questions
Q: How long does the vetting process typically take? A: Plan 2–3 weeks to request materials, speak with references, and compare proposals. Don't rush; this decision affects deal outcomes.
Q: Should I hire a larger national firm or a boutique? A: Larger firms offer breadth and resources; boutiques often provide more attention and deeper niche expertise. Both can succeed—focus on track record in your situation, not size.
Q: What's a realistic valuation range an advisor should predict? A: A competent advisor should forecast within 10–15% of final valuation for established businesses. Wild ranges suggest guesswork.
Start conversations with 3–4 firms today so you're prepared when the right opportunity emerges.