How do I perform a reverse DCF to find the market-implied growth rate?

A reverse DCF (or implied DCF) works backward from the current market price to determine what growth rate the market is assuming. This is incredibly useful for determining whether a stock's price is realistic.

Logic:

• In a normal DCF: Inputs (growth, margin, WACC) → Output (intrinsic value)
• In a reverse DCF: Output (current price) is known → Solve for the implied growth rate

Step-by-Step Process:

1. Take the current market price as given
2. Fix all DCF assumptions except growth (keep WACC, margins, capex ratios, working capital assumptions)
3. Use the Gordon Growth Model or a multi-stage model
4. Solve for the growth rate that makes DCF value = market price

Worked Example — Helios Semiconductor (fictional):

Using the single-stage FCFF model:

> EV = FCFF_1 / (WACC - g) = FCFF_0 x (1 + g) / (WACC - g)

Plug in EV = $9,000M and FCFF_0 = $350M:

> $9,000 = $350 x (1 + g) / (0.10 - g)

Solve for g:

> $9,000 x (0.10 - g) = $350 + $350g

> $900 - 9,000g = $350 + $350g

> $550 = 9,350g

> g = 5.88%

The market is pricing Helios as if FCFF will grow at 5.88% per year forever.

Is 5.88% Reasonable?

Now ask: Can Helios realistically sustain 5.88% FCFF growth indefinitely?

• Industry (semiconductor): cyclical, capital-intensive, but long-term demand growth in chips
• Company-specific: Helios has 18% market share in automotive chips, growing TAM
• Historical FCFF growth: 8% over the past 5 years

Conclusion: 5.88% seems reasonable but not conservative. The stock is fairly valued if you believe in sustained mid-single-digit growth.

Multi-Stage Reverse DCF:

For more precision, fix Phase 1 growth (e.g., consensus 3-year estimates) and solve for the terminal growth rate:

Project FCFF for Years 1-3 at 12%, calculate PV of those cash flows, and then:

> EV - PV(Phase 1) = Terminal Value

> Terminal Value = FCFF_4 / (WACC - g_terminal)

> Solve for g_terminal

This gives you the long-run growth rate the market is embedding beyond the near-term consensus.

Why Reverse DCF Is Powerful:

1. Avoids the 'garbage in, garbage out' problem — instead of forcing your growth assumption, you discover the market's assumption
2. Decision tool: If the implied growth is unrealistically high, the stock is overvalued. If it is pessimistic, it is undervalued.
3. Sensitivity testing: Run the reverse DCF with different WACC assumptions to see how sensitive the implied growth is to discount rate changes

Exam tip: CFA Level II may present a company's current price, FCFF, and WACC, then ask what growth rate is implied. Use the perpetuity formula and solve algebraically. If it is a multi-stage setup, the question will provide near-term growth and ask for the terminal rate.

Master reverse DCF and other advanced valuation techniques in our CFA Level II course.