Synergy is the incremental benefit of combining two businesses that neither captures alone.

How it works

Revenue synergies might come from cross-selling into shared customers; cost synergies from consolidating G&A, datacenters, or vendors. Acquirers model synergies in NPV to justify paying above standalone DCF. Integration teams track realization—many deals miss targets because customers churn or IT merges run over budget.

Founders pitching acquirers should document realistic synergy levers the buyer can actually execute.

Why it matters

• Founders: Credible synergy stories raise strategic premium; fantasy spreadsheets kill trust in diligence.
• Investors: PE returns depend on cost takeout timing; strategics often overestimate revenue synergies.

Common mistake

Equating announced synergy dollars with certain cash. Most synergies take years and compete with integration disruption.

Related ideas

Strategic premium, integration, strategic acquisition, and earnout.

When you will see it

M&A decks list revenue and cost synergies with year-by-year phasing—investors discount anything beyond year two unless integration history supports it.

Questions to ask

• Which synergies require customer retention versus headcount cuts?
• Who owns integration milestones post-close?
• What portion of synergy is in the headline price already?

Practical takeaway

Treat synergy as something to define precisely in writing—not assume everyone in the room shares the same meaning. In term sheets, board decks, and LP updates, tie the concept to a concrete decision: a vote, a price input, a fund policy, or a metric formula. When definitions drift, teams misprice risk, miss leverage, or waste cycles on the wrong conversation.