In the pursuit of a mid-market acquisition, the term “synergy” is often used to justify a premium purchase price. It is the mathematical promise that $1 + 1 = 3$. However, in the cold light of post-acquisition reality, many buyers find that synergies are far easier to model in a spreadsheet than they are to extract from a living, breathing business.
At David Mayfair, we categorize synergies into two distinct camps: Hard Cost Savings and Soft Revenue Growth. A sophisticated buyer discounts the latter and audits the former with extreme prejudice.
The Mirage of Revenue Synergies
Revenue synergies—the idea that you can immediately sell your existing products to the target’s customers, or vice versa—are the most common form of “hopeful math.”
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The Integration Friction: Sales teams are notoriously protective of their relationships. Forcing a legacy sales rep to push a new, unfamiliar product line often leads to distractions that cause the core business to slip.
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Customer Resistance: Just because a client trusts the target company for specialized manufacturing doesn’t mean they want to buy your software. Cross-selling requires a level of brand permission that takes years, not months, to earn.
The Mayfair Rule: We advise our clients to treat revenue synergies as “bonuses” rather than core deal drivers. If the deal doesn’t make sense on the target’s standalone EBITDA, the revenue synergy is a gamble, not a strategy.
The Rigor of Cost Synergies
Cost synergies are more tangible, but they come with their own “implementation tax.” These are the savings found by eliminating redundant functions.
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G&A Consolidation: Merging two accounting departments or two HR systems. While the math is simple (1 Controller instead of 2), the execution involves severance costs, cultural disruption, and the risk of losing “institutional memory” during the transition.
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Supply Chain Compression: Leveraging a larger footprint to negotiate better raw material pricing. This is the most “durable” form of synergy, as it improves margins without requiring a change in customer behavior.
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Technology Stack Optimization: Moving the target from a high-cost, legacy ERP to a modern, cloud-based platform. The “Alpha” here is found in increased operational velocity.
The “Dissynergy” Factor
A sophisticated analysis must also account for Dissynergies—the hidden costs that arise because of the merger.
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The Complexity Tax: Larger organizations move slower. The nimbleness that made the target successful may be stifled by your new corporate reporting requirements.
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Talent Attrition: If your “synergy plan” involves cutting the 20% of staff who hold the key client relationships, you aren’t saving costs; you are liquidating the asset’s future.
Calculating the “Net Synergy Value”
When we represent a buyer, we insist on a “Synergy Risk Adjustment.” If the spreadsheet says there is $1M in potential savings, we model the deal at $500k. We then subtract the one-time costs of achieving those savings (consultants, severance, system migrations).
At David Mayfair, we believe that a deal built on “spreadsheet fantasies” is a deal built on sand. We hunt for the “Hard Alpha”—the improvements that are within your direct control—ensuring that the upside is a reality, not a hope.

