Contribution Analysis

The analysis begins by compiling each company's standalone financial metrics: revenue, EBITDA, net income, total assets, and sometimes free cash flow or book value. For each metric, you calculate Company A's contribution as A/(A+B) and Company B's as B/(A+B). For example, if Company A has $400M EBITDA and Company B has $600M, A contributes 40% and B contributes 60% of combined EBITDA. These percentages are then compared to the proposed ownership split to determine whether the implied exchange ratio is fair to both sets of shareholders. The analysis creates a matrix of contribution percentages across multiple metrics.

The contribution percentages directly inform the exchange ratio in a stock-for-stock merger. If the analysis shows Company A contributes 45% on average across metrics, Company A shareholders should own approximately 45% of the combined entity. The exchange ratio is then set so that, given each company's share count, the post-deal ownership matches the contribution-implied split. In practice, the exchange ratio is negotiated with reference to multiple contribution metrics plus accretion/dilution analysis, standalone valuations, and market premiums. Contribution analysis provides one important input among several.

Contribution analysis is most commonly associated with mergers of equals, where two similar-sized companies combine and neither is clearly the acquirer. Classic examples include the Dow-DuPont merger and the Sprint-T-Mobile combination. The technique is also used in merger models to support fairness opinions and board presentations. Investment banks frequently present a contribution matrix alongside traditional valuation analyses to provide a comprehensive view of value. The analysis helps boards and shareholders understand whether the proposed deal terms fairly reflect each company's economic contribution.

Not all metrics are weighted equally — the appropriate weighting depends on the industry and what drives value. For a high-growth tech merger, revenue contribution might be weighted more heavily than net income. For a mature industrial combination, EBITDA and asset contributions may matter most. Analysts typically present the full matrix of unweighted contribution percentages and separately show a weighted average based on what they believe are the most relevant metrics. Understanding how to weight metrics and justify your choices demonstrates the kind of judgment interviewers look for beyond mechanical calculation.