Stock Valuation Guides: DCF, P/E, and Multiples Explained

DCF values a business by discounting all expected future free cash flows back to present value using the weighted average cost of capital (WACC) as the discount rate. It is the most theoretically rigorous method because it forces you to make every assumption explicit — growth rate, margins, capital intensity, and the long-run terminal value. Analysts prefer DCF when a company generates consistent, forecastable free cash flow and when understanding the sensitivity of valuation to assumptions is more important than speed.

The price-to-earnings multiple is the most widely used shorthand for equity valuation: what are investors willing to pay per dollar of current earnings? Analysts use forward P/E — next twelve months estimated earnings — to compare a stock to its own history, its sector median, and its expected growth rate. P/E multiples work best for mature, consistently profitable businesses where earnings are a reliable proxy for economic value creation. They break down for companies with negative earnings, heavy non-cash charges, or high leverage.

Enterprise value divided by EBITDA is the standard multiple for M&A analysis and capital-intensive businesses because it is capital-structure neutral — enterprise value captures both debt and equity, so two companies with identical operations but different leverage ratios produce the same EV/EBITDA multiple. Analysts reach for EV/EBITDA when comparing companies across different depreciation policies, when evaluating acquisition targets, or when the business is in a sector (energy, industrials, telecom) where depreciation and amortization distort reported earnings significantly.

Asset-based valuation anchors the analysis to the balance sheet: what would the business be worth if its assets were liquidated or replaced at current market prices? For banks and financial institutions, price-to-book (P/B) or price-to-tangible-book (P/TBV) is the standard because earning power tracks book value closely. For real estate companies, net asset value (NAV) captures portfolio value better than any earnings multiple. For distressed companies approaching insolvency, liquidation value sets the floor on what equity is worth. Asset-based methods understate value for intangible-heavy businesses — a software company's most valuable assets (code, brand, customer relationships) do not appear on the balance sheet.

DCF values a stock as the net present value (NPV) of all future free cash flows:

PV = FCF₁/(1+r)¹ + FCF₂/(1+r)² + … + TV/(1+r)ⁿ

Worked example: A company generating $500M FCF growing 8%/year for 5 years at a 10% WACC produces a terminal-inclusive intrinsic EV near $7.4B — divide by shares outstanding (minus net debt) to get per-share value.

Best for: Mature, FCF-positive businesses where you can model the next 5–10 years. Avoid for pre-revenue companies or highly lumpy FCF.

The three inputs that drive 90% of DCF output: near-term FCF growth rate, terminal growth rate (typically 2–4%), and discount rate (WACC, typically 8–12% for large-cap US equities). Run sensitivity tables before trusting any single output.

Comps values a business by applying the multiples that the market currently pays for similar companies:

Enterprise Value = EBITDA × Industry Multiple

Worked example: If sector peers trade at 12× EV/EBITDA and your company has $200M EBITDA, implied EV = $2.4B. Subtract net debt and divide by shares for equity value per share.

Best for: Companies with liquid public peers and stable sector multiples. Fast and grounded in market reality — but dangerous in isolation. A comps-only analysis tells you whether a stock is cheap relative to peers, not whether the whole sector is mispriced.

Use comps to calibrate and sanity-check your DCF output, not replace it.

Precedent transactions look at the multiples paid in recent acquisitions of comparable companies — typically 20–40% above public comps due to the control premium.

Worked example: If recent acquisitions in the sector were done at 15× EV/EBITDA (versus public comps at 12×), that 3-turn premium reflects what a strategic buyer paid for control. Applied to your company's $200M EBITDA, transaction value = $3.0B vs. the public-market comps value of $2.4B.

Best for: M&A context — assessing take-private value, evaluating a strategic bid, or stress-testing whether a stock is cheap enough to attract a buyer. Not useful for minority-position equity analysis because public minority investors do not receive the control premium.

Use the Comps tool to benchmark current public multiples as a baseline, then apply a transaction premium from recent deal data in the sector.

SOTP values each business segment or asset class separately, then sums them and subtracts net debt:

Equity Value = Σ(Segment EV) − Net Debt

Worked example: A conglomerate with Division A (industrial) valued at 8× EBITDA on $200M = $1.6B, plus Division B (software) valued at 15× EBITDA on $50M = $750M, minus $400M net debt → equity value = $1.95B. A single-multiple comps analysis would apply one average multiple, burying the software premium in the blended rate.

Best for: Conglomerates, holding companies, and asset-heavy businesses (real estate, mining, energy) where operating cash flow is secondary to balance sheet composition — and where return on assets (ROA) is a key efficiency metric for each segment. Also valuable when a company is considering a spin-off — SOTP shows whether the sum is worth more than the whole.

A DCF has many inputs but three dominate the output:

• Free cash flow growth rate (years 1–5). The near-term forecast. Anchor this to actual business mechanics: revenue growth, margin trajectory, capex intensity. Do not extrapolate recent growth linearly — check for mean reversion signals in margins and competition.
• Terminal growth rate. The perpetuity growth rate applied after your forecast period — typically 2–4% for a stable US business (roughly in line with nominal GDP). Every basis point matters here because it applies to a perpetuity. A 3% vs. 4% terminal rate can swing intrinsic value by 15–25% on a high-multiple stock.
• Discount rate (WACC). The weighted average cost of capital — blends cost of equity and after-tax cost of debt. For large-cap US equities, 8–10% is typical. For high-growth or unprofitable companies, 12–15% is more defensible. A lower discount rate inflates every future cash flow — analysts gaming DCFs tend to shave discount rates, not change growth assumptions.

Run sensitivity tables on these three inputs before trusting any DCF output. If your investment thesis only works at a 7% discount rate and 5% terminal growth, you should know that before buying.

Multiples are context-dependent. Using the wrong one for the wrong business type is a common and costly error:

• P/E. Simplest and most widely cited — but distorted by leverage, non-cash charges, and tax timing differences. Useful for comparing similar businesses with similar balance sheets. A P/E of 25x is cheap for a company growing earnings per share (EPS) at 30%; it's expensive for a company growing at 5%. Never look at P/E without looking at the earnings growth rate alongside it.
• EV/EBITDA. The standard for M&A and LBO analysis because it's capital-structure neutral (enterprise value captures both equity and debt). Better than P/E when comparing companies with different leverage ratios or depreciation policies. Sector medians: software 20–30x, industrials 8–12x, banks N/A (use price-to-book ratio (P/B) or P/TBV instead).
• EV/FCF (or P/FCF). The most honest multiple for FCF-heavy businesses because it doesn't rely on EBITDA adjustments or accounting choices. If a company trades at 40x EBITDA but 20x FCF, it's a lower-capex, lower-maintenance business than the EBITDA multiple suggests — and may be cheaper than it appears.
• P/S (price-to-sales). Used for unprofitable growth companies as a proxy for future earnings potential. Low P/S only matters if the business can reach meaningful margins at scale — a P/S of 3x on a 5% gross margin business is not cheap. Compare P/S to gross margin percentages, not standalone.