The concept of a synergy in the context of M&A is commonly understood to mean a situation where the whole is greater than the sum of the parts as two businesses combine. Dis-synergies (or “dissynergies”), on the other hand, refers to a situation where the whole is less than the sum of the parts. A dis-synergy is essentially the opposite of a synergy.
Revenue Dis-Synergies
Revenue dis-synergies are caused when the combination of two companies in a merger results in total pro forma revenue that is less than the sum of the two standalone businesses.
In the example below, each company has standalone revenue of $100M. Logically, combining the two businesses should result in revenue of $200M. Unfortunately for them, revenue dis-synergies of ($20M) occur and total pro forma revenue is only $180M.