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What is DCF Valuation?
Discounted Cash Flow (DCF) valuation is the gold standard method that Wall Street analysts, private equity firms, and institutional investors use to determine the intrinsic value of a company. Unlike simple P/E ratios or market sentiment, DCF analysis asks a fundamental question:
"What is this company worth based on the actual cash it will generate in the future?"
The core principle is simple: a dollar today is worth more than a dollar tomorrow. DCF valuation projects a company's future free cash flows and discounts them back to present value using a discount rate (usually the company's WACC - Weighted Average Cost of Capital).
Why DCF Matters for Investors
Intrinsic Value
DCF tells you what a stock is actually worth, not just what the market is willing to pay today. This helps you identify undervalued opportunities.
Institutional Methodology
Warren Buffett, JPMorgan, and Goldman Sachs all use DCF. Learning this method puts you on equal footing with professional investors.
Scenario Testing
DCF models let you test "what if" scenarios: What if growth slows? What if margins improve? You can quantify the impact on valuation.
Independent Analysis
Stop relying on analyst price targets. Build your own DCF model and form independent investment opinions based on fundamentals.
The DCF Formula Explained
The DCF valuation formula consists of two main components:
Enterprise Value (EV)
FCFโ = Free Cash Flow in year t
WACC = Weighted Average Cost of Capital (discount rate)
t = Year number (1, 2, 3, 4, 5...)
n = Final year of projection period
Terminal Value = Value of all cash flows beyond the projection period
Then convert Enterprise Value to Equity Value (the actual stock price):
Step-by-Step: Building Your First DCF Model
Project Free Cash Flow (FCF)
Free Cash Flow is the cash a company generates after capital expenditures. It represents money that can be returned to investors or reinvested for growth.
FCF = Operating Cash Flow - CapEx
Or more detailed:
FCF = EBIT ร (1 - Tax Rate) + D&A - CapEx - ฮNWC
Pro tip: Look at the past 5 years of FCF to identify trends. Is it growing? Stable? Declining? Project the next 5-10 years based on realistic growth assumptions.
Calculate WACC (Discount Rate)
WACC is the average rate a company pays to finance its assets. It's your discount rate - the hurdle rate that future cash flows must clear.
WACC = (E/(E+D) ร Kโ) + (D/(E+D) ร Kd ร (1-Tax))
Don't know how to calculate WACC? Use our built-in WACC Wizard with CAPM calculator. It walks you through cost of equity, cost of debt, and capital structure.
Calculate Terminal Value
You can't project cash flows forever. Terminal Value captures all cash flows beyond your projection period (usually years 6+). It often represents 60-80% of total value.
Perpetuity Growth Method (most common):
TV = FCFโ ร (1 + g) / (WACC - g)
Where g = perpetual growth rate (typically 2-3%, roughly GDP growth)
Exit Multiple Method (alternative):
TV = EBITDAโ ร Exit Multiple
Use industry average EBITDA multiples (e.g., SaaS companies trade at 10-15x)
Discount Everything to Present Value
Apply the discount rate (WACC) to bring all future cash flows back to today's dollars.
Example:
Year 1: $100M / (1.10)ยน = $90.9M
Year 2: $110M / (1.10)ยฒ = $90.9M
Year 3: $121M / (1.10)ยณ = $90.9M
Year 5 TV: $2,000M / (1.10)โต = $1,242M
Enterprise Value = Sum of all PVs
Convert to Price Per Share
Adjust for debt and cash to get equity value, then divide by shares outstanding.
Enterprise Value: $10,000M
- Total Debt: $2,000M
+ Cash & Equivalents: $500M
= Equity Value: $8,500M
รท Shares Outstanding: 100M
= Fair Value Per Share: $85.00
Common DCF Mistakes to Avoid
โ Overly Optimistic Growth
Projecting 20% FCF growth forever is unrealistic. Be conservative. Most mature companies grow at 3-7% long-term. High growth rarely lasts more than 5 years.
โ Ignoring WACC Sensitivity
A 1% change in WACC can swing valuation by 20-30%. Always run sensitivity analysis: What if WACC is 9% vs 11%? Test multiple scenarios.
โ Terminal Value Dominating (80%+ of Value)
If Terminal Value represents more than 80% of Enterprise Value, your projection period is too short or your near-term FCF is too low. Extend projections to 10 years.
โ Using Net Income Instead of FCF
Net income includes non-cash items (depreciation) and ignores capital needs (CapEx). Always use Free Cash Flow - it's the actual cash available to investors.
Real Example: Tech Company DCF
Case Study: High-Growth SaaS Company
Assumptions:
- Current FCF: $50M (Year 0)
- Growth: 25% (Yr 1-3), 15% (Yr 4-5), 10% (Yr 6-10)
- WACC: 10%
- Terminal Growth: 3%
- Shares Outstanding: 100M
- Net Debt: $200M
PV of Years 1-10: $800M
Terminal Value: $2,500M
PV of Terminal Value: $964M
Enterprise Value: $1,764M
- Net Debt: $200M
= Fair Value Per Share: $15.64
If the stock trades at $12, it's undervalued by 30%. If it trades at $20, it's overvalued by 28%.
Ready to Build Your First DCF Model?
Our Excel Power Modeler includes a built-in WACC wizard, sensitivity analysis, and real-time calculations. No spreadsheet required.
Frequently Asked Questions
What's a good WACC for tech companies?
Tech companies typically have WACC between 8-12%. High-growth startups might be 12-15%, while mature tech (Microsoft, Apple) might be 7-9%. It depends on leverage and beta.
How far out should I project cash flows?
5-10 years is standard. For stable businesses (utilities, consumer staples), 5 years is fine. For high-growth companies, use 10 years to capture the growth trajectory before terminal value.
What if a company doesn't have positive FCF yet?
Many growth companies (Amazon 1997-2015) have negative FCF. Project when FCF turns positive, then run DCF from that point. Alternatively, use revenue multiples or comparable company analysis.
Is DCF accurate for cyclical industries (oil, automotive)?
DCF works but requires normalized assumptions. Use average FCF margins over a full cycle (5-7 years) rather than peak or trough margins. Consider using exit multiples instead of perpetuity growth.