DCF Valuation: The Complete Guide With 3-Company Worked Comparable
A pillar guide to discounted cash flow valuation covering forecasting free cash flow, building the explicit forecast and terminal value, computing enterprise and equity value, and a 3-company worked comparable analysis showing how DCF outputs vary with growth and WACC assumptions.
What You'll Learn
- ✓Forecast unlevered free cash flow over an explicit forecast period
- ✓Apply the Gordon growth and exit multiple methods to compute terminal value
- ✓Discount FCF and terminal value at WACC to compute enterprise value
- ✓Bridge enterprise value to equity value (cash, debt, minority interest)
- ✓Build a sensitivity table on growth and WACC assumptions
- ✓Recognize when DCF is appropriate vs when comparables-based methods are better
1. Direct Answer: How DCF Works
Discounted cash flow (DCF) valuation estimates the intrinsic value of a company by forecasting its future free cash flow, then discounting those cash flows to present value at the company's weighted average cost of capital (WACC). The output is the enterprise value of the company; bridging to equity value requires subtracting net debt and minority interest. DCF is the gold standard valuation method when forecastable cash flows exist; it is most reliable for mature, profitable, low-volatility businesses and least reliable for early-stage growth companies, cyclicals, and turnaround situations. The key inputs are: free cash flow forecast (typically 5-10 years explicit, then terminal), terminal value (usually 50-80% of total value), and WACC (typically 8-12% for US companies). Small changes to any of these inputs produce large changes in the output, which is why DCF is always paired with sensitivity analysis.
Key Points
- •DCF estimates intrinsic value by discounting future cash flows at WACC
- •Output is enterprise value; bridge to equity by subtracting net debt and minorities
- •Most reliable for mature stable companies; weakest for early-stage growth
- •Three key inputs: FCFF forecast, terminal value, WACC
- •Small input changes produce large output changes — sensitivity analysis required
2. Step 1: Forecasting Unlevered Free Cash Flow
Unlevered free cash flow (FCFF — free cash flow to firm) is the cash available to all capital providers (debt and equity) before financing decisions: FCFF = EBIT × (1 − tax rate) + Depreciation & Amortization − Capital Expenditures − Change in Net Working Capital Forecast each component for 5-10 years: • Revenue: typically driven by historical growth rate plus management guidance and industry analysis. Common patterns: high-growth tapering to industry rate; mature flat; cyclical with averaging. • EBIT margin: forecast the operating margin and apply to revenue. Track historical margin pattern; consider operating leverage. • Tax rate: use effective tax rate (typically 21-25% in US after 2017 tax reform). • D&A: typically grows in proportion to revenue or capex; check historical D&A as % of revenue. • Capex: separate maintenance capex (replacing existing assets) from growth capex (expanding capacity). Maintenance capex roughly equals D&A in steady state. • Working capital: change in (Receivables + Inventory − Payables). Growing companies tie up cash in WC; declining companies release WC. Forecast as % of revenue or by component days. A cleanly built DCF forecasts each line item separately (3-statement model) rather than estimating FCFF directly. The 3-statement model also produces consistency checks (cash flow ties to balance sheet) that pure FCFF forecasting lacks.
Key Points
- •FCFF = EBIT × (1 − T) + D&A − CapEx − Δ Working Capital
- •Forecast 5-10 years of explicit cash flows
- •Forecast each line item separately (3-statement model)
- •Maintenance capex roughly equals D&A in steady state
- •Growing companies tie up working capital; declining companies release it
3. Step 2: Terminal Value (Most Sensitive Assumption)
Terminal value (TV) captures all cash flows beyond the explicit forecast period. Because TV typically represents 50-80% of total enterprise value, it is the most sensitive single assumption. Method 1: Gordon Growth (Perpetuity Growth) TV = FCFF_n+1 / (WACC − g) Where: - FCFF_n+1 is the free cash flow in the year after the explicit forecast ends - WACC is the discount rate - g is the perpetual growth rate (typically 2-3%, never higher than long-term GDP growth) Method 2: Exit Multiple TV = EBITDA_n × multiple Apply a multiple (e.g., 8× EV/EBITDA) drawn from comparable transactions or trading multiples. Easier to communicate but less rigorous than perpetuity growth. Worked Example. Final-year forecast: FCFF = $50M, EBITDA = $80M. WACC = 10%. Perpetual growth = 2.5%. Method 1: TV = $50M × 1.025 / (0.10 − 0.025) = $51.25M / 0.075 = $683M Method 2: TV = $80M × 8 = $640M Most practitioners compute both and use the average or check that the two methods imply consistent multiples (Method 1 implies an exit multiple of $683M / $80M = 8.5×, close to Method 2). Discount TV back to present value at WACC^n: PV(TV) = TV / (1 + WACC)^n. For year-5 TV at WACC = 10%: PV = TV / 1.61. A common mistake: using a perpetual growth rate higher than long-term GDP growth (~3% nominal). This implies the company will grow faster than the entire economy forever — economically impossible. Cap perpetual growth at 2-3% in practice.
Key Points
- •Terminal value typically 50-80% of total enterprise value
- •Gordon growth: TV = FCFF_n+1 / (WACC − g)
- •Exit multiple: TV = EBITDA × peer multiple
- •Cap perpetual growth at 2-3% (long-term GDP)
- •Discount TV back at (1 + WACC)^n to present value
4. Step 3: Discount Cash Flows to Present Value
Discount each year's FCFF and the terminal value at WACC. WACC = (E/V) × Re + (D/V) × Rd × (1 − T) Where: - E = market value of equity (share price × shares outstanding) - D = market value of debt (close to book value for most public debt) - V = E + D - Re = cost of equity, typically from CAPM (Re = Rf + beta × MRP) - Rd = cost of debt (yield to maturity on existing bonds) - T = marginal tax rate Worked Example WACC. Company: equity market cap $500M, debt $200M, total $700M. Equity weight = 71.4%; debt weight = 28.6%. CAPM: Rf = 3%, beta = 1.2, MRP = 6% → Re = 3% + 1.2 × 6% = 10.2%. Cost of debt YTM = 5%; tax rate = 25%; after-tax = 5% × 0.75 = 3.75%. WACC = 0.714 × 10.2% + 0.286 × 3.75% = 7.28% + 1.07% = 8.35% Discount cash flows at this WACC: PV = FCFF_y1 / (1.0835)^1 + FCFF_y2 / (1.0835)^2 + ... + FCFF_y5 / (1.0835)^5 + TV / (1.0835)^5 The discount factor in year 5 is 1.0835^5 = 1.493. So a $50M cash flow in year 5 is worth $50M / 1.493 = $33.5M today. Larger discount rates mean steeper discounts and lower valuations. Mid-year convention. Some practitioners assume cash flows occur mid-year (June 30) rather than year-end, raising present values slightly: PV = FCFF / (1+WACC)^(t-0.5). Use consistently throughout.
Key Points
- •WACC = (E/V) × Re + (D/V) × Rd × (1 − T)
- •Cost of equity from CAPM: Re = Rf + beta × MRP
- •Always tax-adjust the cost of debt for WACC
- •Discount factor = (1 + WACC)^t for year-end convention
- •Mid-year convention discounts at (t − 0.5), raising PV slightly
5. Step 4: Bridge from Enterprise Value to Equity Value
The DCF directly produces enterprise value (EV — value of the operations available to all capital providers). Bridge to equity value: Equity Value = EV − Total Debt + Cash & Equivalents − Minority Interest − Preferred Stock (Some include short-term investments in cash; some exclude operating-cash buffer; conventions vary.) Then divide equity value by diluted shares outstanding to get implied price per share. Compare to current market price: - If implied > market: stock is undervalued (BUY) - If implied < market: stock is overvalued (SELL) - If implied ≈ market: stock is fairly priced Fully diluted shares includes basic shares plus dilution from in-the-money options (treasury stock method) and convertible securities (if-converted method). Worked Example. EV from DCF = $1,000M. Cash = $80M; Total Debt = $250M; Minority Interest = $20M. Equity Value = $1,000 − $250 + $80 − $20 = $810M Diluted shares = 100M. Implied price = $810M / 100M = $8.10/share. If the stock trades at $7, DCF suggests 16% upside. If at $9, DCF suggests 10% downside. Validation. The DCF output should be sanity-checked against trading multiples (P/E, EV/EBITDA) of peer companies, recent transactions in the sector, recent analyst targets (if available), and the company's historical valuation range. When DCF and comparables disagree by more than 20%, investigate.
Key Points
- •Equity Value = EV − Debt + Cash − Minority Interest − Preferred
- •Divide by diluted shares (treasury method options, if-converted converts)
- •Compare implied price to market: above = undervalued, below = overvalued
- •Cross-check against trading multiples and recent transactions
- •20%+ disagreement with comparables → investigate forecast assumptions
6. 3-Company Worked Comparable Analysis
DCF outputs depend critically on growth and WACC assumptions. A 3-company comparable analysis shows how the same DCF framework produces different intrinsic value estimates based on company characteristics. | Input | Company A (Mature) | Company B (Growth) | Company C (Cyclical) | |---|---:|---:|---:| | Year 1 FCFF | $100M | $60M | $90M | | Forecast period | 5 years | 10 years | 5 years | | Forecast growth | 4% | 15% then 5% | 0% (cyclical avg) | | Year 5/10 FCFF | $122M | $250M (10) | $90M | | Perpetual g | 2.5% | 3.0% | 2.0% | | WACC | 8% | 12% | 10% | | Terminal value | $1,664M | $4,290M | $1,125M | | PV of explicit | $415M | $830M | $341M | | PV of TV | $1,132M | $1,381M | $698M | | Enterprise Value | $1,547M | $2,211M | $1,039M | Observations: Company B (growth) has lower FCF early but the longer forecast period and higher growth rate produce the highest EV. Company A (mature) has stable cash flows and lower WACC because of lower business risk. Company C (cyclical) has lower-quality earnings, higher WACC reflecting risk, and lower terminal value because of stagnant growth — lowest EV despite reasonable absolute FCF. Sensitivity: changing Company B's perpetual growth from 3% to 4% raises EV by ~12%. Changing WACC from 12% to 11% raises EV by ~10%. Small assumption changes drive large valuation changes.
Key Points
- •Growth companies: longer forecast, higher growth, higher WACC — usually highest EV
- •Mature companies: stable cash flows, lower WACC — moderate EV
- •Cyclical companies: higher WACC, lower TV growth — lowest EV
- •Sensitivity to growth and WACC drives valuation range
- •Small assumption changes (1% WACC, 0.5% g) shift EV by 10-15%
7. Sensitivity Analysis: The Mandatory Step
Every DCF must include a sensitivity table — typically a 2D matrix showing implied per-share value as a function of WACC and perpetual growth. A typical sensitivity table: | Implied $/share | g = 2.0% | g = 2.5% | g = 3.0% | |---|---:|---:|---:| | WACC = 9% | $9.20 | $10.50 | $12.20 | | WACC = 10% | $7.80 | $8.85 | $10.20 | | WACC = 11% | $6.70 | $7.50 | $8.50 | Center cell ($8.85) is the base case. A 1% change in WACC or 0.5% change in g shifts implied value by $1-2 per share. Additional sensitivity dimensions worth running: revenue growth (vary base-case ±200 bps), operating margin (±200 bps), capex as % of revenue (±200 bps), tax rate (less impact if no policy change expected). The takeaway: DCF produces a RANGE of valuations, not a point estimate. A range of $7-12 per share with a $9 base case is a more honest output than $8.85 alone.
Key Points
- •Sensitivity table: 2D matrix of WACC × perpetual growth
- •Each cell is implied per-share value at that combination
- •1% WACC change or 0.5% g change shifts implied value materially
- •Additional sensitivities: revenue growth, margin, capex %
- •Output is a RANGE of valuations, not a point estimate
8. How FinanceIQ Helps With DCF Valuation
DCF valuation is the most-tested valuation method on the CFA exams (all three levels), the most-used method in equity research and investment banking, and the foundation of any corporate finance curriculum. The challenge is that DCF requires forecasting many line items consistently and applying terminal value carefully — small errors compound. Snap a photo of a 3-statement model or company financials and FinanceIQ builds the DCF: forecasts FCFF, computes WACC, applies both terminal value methods, discounts to present value, bridges to equity value, and produces a sensitivity table on growth and WACC. For peer comparisons, FinanceIQ produces side-by-side DCF outputs across multiple companies. This content is for educational purposes only and does not constitute investment advice.
Key Points
- •Builds the full DCF from financials in one shot
- •Applies both perpetuity growth and exit multiple TV methods
- •Computes WACC from market data
- •Produces sensitivity tables on WACC and growth
- •Useful for CFA exams, equity research, and corporate finance courses
Key Takeaways
- ★FCFF = EBIT × (1 − T) + D&A − CapEx − Δ Working Capital
- ★Terminal value typically 50-80% of total enterprise value
- ★Gordon growth TV = FCFF_n+1 / (WACC − g); cap g at 2-3% (long-term GDP)
- ★Exit multiple TV = EBITDA × peer-derived multiple
- ★WACC = (E/V) × Re + (D/V) × Rd × (1 − T)
- ★Re from CAPM: Rf + beta × MRP (MRP typically 5-7%)
- ★Equity Value = EV − Debt + Cash − Minority Interest − Preferred
- ★Sensitivity tables required: WACC and g are the two most sensitive inputs
- ★DCF is gold standard for mature stable businesses; weakest for early-stage growth
- ★Always cross-check DCF output against trading multiples and recent transactions
- ★Mid-year convention: discount at (t − 0.5) instead of t
- ★Fully diluted shares includes treasury-method options and if-converted converts
Practice Questions
1. Year-5 FCFF = $80M. Year-6 FCFF (perpetual growth start) = $82M. WACC = 10%. Perpetual growth = 2.5%. What is the terminal value at year 5?
2. EV from DCF = $2,000M. Total Debt = $400M; Cash = $100M; Minority Interest = $50M. What is equity value?
3. Compute WACC: equity market cap $300M, debt $100M, beta 1.1, Rf 3%, MRP 6%, Rd 5%, T 25%.
4. Why is the perpetual growth rate capped at 2-3%?
5. When is exit multiple TV preferred over perpetuity growth TV?
6. What does it mean if DCF implies a price 30% above current market?
FAQs
Common questions about this topic
DCF is appropriate when forecastable cash flows exist — typically mature, profitable companies with predictable revenue and margins. DCF is weakest for early-stage growth companies (cash flows are negative or highly uncertain), cyclicals (averaging cyclical earnings is hard), and turnaround situations (assumptions about restructuring success drive everything). Multiples-based valuation is faster but depends on the quality of comparable companies. In practice, both methods are used together — DCF for intrinsic value, multiples for market-context sanity check.
Because most of a company's value comes from cash flows beyond the typical 5-10 year explicit forecast period. Mature, low-growth companies often have terminal value at 50-60% of total EV. High-growth companies can have terminal value at 70-80% of total EV. The mathematical reason: cash flows in years 6+ continue indefinitely, and even with discounting, the cumulative value is large. The practical implication: always sensitivity-test both perpetual growth and WACC, since these drive terminal value.
The Gordon growth formula breaks down (TV = FCFF / (WACC − g) approaches infinity as g → WACC and becomes negative if g > WACC). Mathematically, this signals an inconsistent assumption — a company growing forever faster than its cost of capital would consume infinite resources. The fix: cap g at 2-3% (well below WACC of 8-12%). If the model implies g > WACC, something is wrong with the assumption set.
Same framework but with adjustments. Equity beta: use peer-group average beta, then adjust for the target's leverage (lever and unlever). Equity weight: estimate total equity value via comparable multiples, then iterate (chicken-and-egg problem with WACC). Debt cost: use senior secured loan rates from comparable transactions. Add a private-company illiquidity premium (1-2% typically) to the cost of equity. Final WACC for private companies often runs 100-300 bps higher than public-company comparables.
FCFF (free cash flow to firm) is cash available to all capital providers (debt and equity) before financing decisions. Discount at WACC to get enterprise value. FCFE (free cash flow to equity) is cash available specifically to equity holders after debt service. Discount at cost of equity (Re) to get equity value directly. The two methods should produce the same equity value if applied consistently. FCFF is more common because it isolates operating performance from financing structure; FCFE is used when capital structure is volatile or when the analyst wants to model financing decisions explicitly.
Yes. Snap a photo of a 3-statement model or company financials and FinanceIQ builds the DCF: forecasts FCFF, computes WACC, applies both terminal value methods (perpetuity growth and exit multiple), discounts to present value, bridges to equity value, and produces a sensitivity table on growth and WACC. For peer comparisons, FinanceIQ produces side-by-side DCF outputs across multiple companies. This content is for educational purposes only and does not constitute investment advice.