DCF Terminal Value: Why Your Valuation Is Wrong (And How to Fix It)
8 min read
Why Terminal Value Matters So Much
In most DCF models, terminal value represents 60-80% of total enterprise value. That means your entire valuation is driven by what you assume happens after your explicit forecast period ends. A small change in terminal growth rate or exit multiple can swing the valuation by 20-30%.
Interviewers know this. They will test whether you understand the sensitivity — and whether you can defend your assumptions under pressure.
Two Methods: Gordon Growth vs Exit Multiple
Gordon Growth Model
Formula: TV = FCF × (1 + g) / (WACC - g)
This assumes the business grows at a constant rate forever. Use it when you believe the company will reach a steady state and grow roughly in line with GDP.
Key constraint: The growth rate (g) must be below WACC. If g ≥ WACC, the formula produces a negative or infinite value — a sign your assumptions are broken.
Exit Multiple Method
Formula: TV = Final Year EBITDA × Exit Multiple
This assumes someone buys the company at the end of your forecast period at a market-consistent multiple. Use it when you have strong comparable transaction data.
Best practice: Run both methods and cross-check. If they produce wildly different results, your assumptions are inconsistent.
The Growth Rate Trap
The most common mistake: using a terminal growth rate of 3% or higher. Here is why that is almost always too aggressive:
- Long-term nominal GDP growth in developed markets is approximately 2-2.5%
- No company can sustainably grow faster than the economy forever — it would eventually become the entire economy
- A terminal growth rate of 2% is the standard for most mature businesses
- High-growth companies should have their growth "faded" during the explicit forecast period, not assumed to persist in perpetuity
Sensitivity Analysis Is Mandatory
Every professional DCF includes a sensitivity table showing how the implied share price changes across different WACC and terminal growth rate assumptions. This is not optional — it is how bankers defend their valuations to clients and boards.
A typical table varies WACC from 8% to 13% and terminal growth from 1% to 3%, showing the full range of implied values.
Interview Questions on Terminal Value
"Your DCF shows terminal value is 75% of total EV. Is that a problem?" — Not necessarily. For a mature, stable business, 60-80% is normal. The concern arises when TV exceeds 85% — that means your near-term forecasts are contributing almost nothing, and your valuation is essentially a perpetuity calculation.
"How would you stress-test the terminal value?" — Run the sensitivity table, vary both WACC and growth rate, and cross-check against the exit multiple method. If the Gordon Growth implies a 15x EBITDA multiple at exit but comparable companies trade at 8x, your growth rate is too aggressive.
Take Your Preparation Further
Download our free Valuation Cheat Sheet for a complete reference covering all five valuation methods. For a hands-on model you can practise with, see the DCF Model Template.
Ready for personalised feedback? Book a 1-on-1 mentoring session with an experienced IB/PE professional.