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Terminal Value CalculatorDCF / Gordon Growth / Exit Multiple
Use case

M&A Terminal Value

In M&A, terminal value gets computed three times: standalone target, standalone acquirer, combined entity with synergies. The acquirer compares offer price to combined-with-synergies value and asks whether the spread (the value to shareholders) is worth the integration risk.

Direct answer
M&A terminal value uses the same Gordon Growth or exit multiple mechanics as a single-entity DCF, but you compute it three times: once for the standalone target, once for the standalone acquirer, and once for the combined entity with synergies. Accretion-dilution and value-creation analysis flow from those three outputs.
The discipline

Separate run-rate synergies from one-off costs

Run-rate synergies belong in terminal value

Cost synergies that persist in perpetuity (combined procurement, eliminated duplicate corporate overhead) flow through to terminal-year EBITDA and therefore into terminal value at the chosen multiple or g.

One-off integration costs do not

Integration consulting, severance, system migration are one-off cash outflows in the explicit period. They reduce enterprise value but do not change terminal-year EBITDA. Mixing them in distorts the multiple.

Pitfalls

Three errors that recur in M&A models

  • Double-counting revenue synergies. Revenue synergies are the least-credible category. Booking them into terminal value (which compounds them forever) is the most common over-payment mechanism. Discount them aggressively or exclude them from the terminal multiple.
  • Applying the acquirer's WACC to the target. The discount rate should reflect the cash-flow risk of the target's business, not the cost of capital of the buyer. Diversification benefits accrue to the buyer's shareholders, not to the value of the target's cash flows.
  • Using an exit multiple from a different transaction vintage. Precedent transaction multiples are point-in-time. Re-rate them to current conditions before applying to the terminal-year EBITDA.
Source: Rosenbaum and Pearl, Investment Banking 3rd ed., M&A chaptersLast verified June 2026.
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Last verified June 2026. Source: Rosenbaum and Pearl, Investment Banking 3rd ed.