Most M&A advisory firms never do the math.
They know their referral network produces a certain number of conversations per year and what a closed engagement is worth. But they rarely calculate the flip side: the number of qualified owners in their target market making transition decisions this year without ever appearing on their radar, and what those engagements would be worth at their standard fee.
Running that number is uncomfortable. It produces a concrete figure that represents the revenue gap between their current sourcing approach and a proactive one.
01. The Math Most Firms Avoid
Start with the target universe.
For a lower-middle-market M&A advisor focused on the Southeast, targeting companies with $5M to $30M in revenue in manufacturing and distribution: the Census Bureau's Statistics of U.S. Businesses and commercial databases suggest there are roughly 8,000 to 12,000 companies in that profile across the region. Call it 10,000.
A portion of those owners are in active transition conversations in any given year. The Exit Planning Institute's State of Owner Readiness research shows that a significant portion of business owners are within a 10-year transition horizon, and of those, a meaningful subset are in active decision-making mode in any given 12-month window. A conservative estimate, grounded in EPI's owner population data, puts 5 to 8% of any target universe in some form of active consideration in a given year. On 10,000 companies, that is 500 to 800 owners.
A subset of those owners eventually engages a professional advisor. The SBA Office of Advocacy tracks business transition data and finds that the majority of businesses that attempt a sale do not complete a transaction, a function of pricing gaps, owner readiness, and buyer fit. The owners who use an M&A advisor, broker, or intermediary represent a more engaged subset. Estimate that 40 to 60% of owners actively considering a sale will eventually engage a professional advisor.
So: 500 to 800 owners in active consideration, 200 to 480 who will work with an advisor. These are the people making that decision this year. Most of them will make it without ever speaking to your firm.
02. What Each Engagement Is Worth
Sell-side advisory fees in the lower middle market typically run 3 to 6% of transaction value, with minimum fees ranging from $50,000 to $150,000 depending on the advisor and deal size. For a company transacting at $10M enterprise value (well within the $5M to $30M revenue range), a 5% fee produces $500,000 in revenue.
The math requires that a meaningful fraction of the proactively-sourced conversations (the ones that would not have come from the referral network) produce closed engagements.
If an advisor captures 10 additional qualified conversations per year from a proactive outbound program, converts 20% to engagements (a conservative engagement-to-conversation rate for well-qualified leads), and closes 60% of engagements, that is 1.2 additional closed transactions. At $500,000 per transaction, that is $600,000 in incremental annual revenue.
The cost of the outbound program that produced those 10 conversations: a few thousand dollars per month in a managed program, or more in a self-built one. The return on that cost, in this scenario, is not close.
03. Why Firms Do Not Do This Calculation
The calculation above is imprecise. The 10 conversations might be 6 or might be 15. The close rate varies by market conditions. The fee depends on deal size.
Firms avoid it because the answer, even conservatively, is large enough to be embarrassing. It suggests the firm is leaving a significant amount of addressable revenue on the table through a sourcing strategy that relies on relationships that were already built.
Outbound M&A prospecting also carries a bad reputation, earned by firms that ran it poorly. Volume cold email without qualification, generic pitches to owners who were nowhere near a transition mindset, persistent follow-up that felt like harassment. This version is common enough to be well-known.
Running it well means a precisely targeted list, relevant messaging, an SDR qualification layer, and a follow-up cadence calibrated to owner timelines rather than sales urgency. Fewer firms do this. The economics of running it are clear.
04. The Threshold Question
For any M&A advisory firm, the question is whether the incremental economics justify the investment in time, money, and the operational overhead of running a proactive sourcing motion alongside an existing referral business.
The answer depends on what the firm is leaving behind.
For a firm closing 8 deals per year at an average fee of $400,000, that is $3.2M in annual revenue. If proactive sourcing adds 15% incremental deal flow (a conservative figure based on firms we have seen run this alongside their referral network), that is $480,000 in additional revenue per year from a program that costs a fraction of that to run.
The threshold calculation is different for every firm. But the calculation is worth doing. Most of the firms that have done it honestly are running some form of proactive outbound.
The ones that have not are working from the assumption that their referral network is producing close to what the market could produce. That assumption is worth testing.
Sources
- Exit Planning Institute, "State of Owner Readiness" (business owner transition horizon research across the U.S. owner population)
- U.S. Census Bureau, Statistics of U.S. Businesses (target universe sizing methodology for LMM companies by revenue band and NAICS)
- SBA Office of Advocacy (small business data and business transition research)
- Axia Growth, internal program data (incremental deal flow contribution from proactive outbound programs running alongside referral-based practices)
If you want to run that calculation for your own market and thesis, we can do it with you. Start the conversation here.