On May 1, 2026, Apple's stock traded around $278 per share, capping a market value of roughly $4.1 trillion. A discounted cash flow valuation of the same business, built from Apple's last five years of audited 10-K filings and a 10.3% cost of capital, returns a fair value of approximately $108 per share. Most retail investors who run that math conclude Apple is overvalued by 60% and walk away. They are missing the point of a DCF, which is not to tell you what the price should be but to tell you what the market is implicitly believing about the future.
Think of a DCF as a marriage proposal letter you write to your future self. It forces you to put down on paper exactly what you believe about a business: how fast it will grow, what margins it will earn, what the discount rate should be, what it will look like ten years from now. The math is unforgiving. The output, the per-share fair value, is the easy part. The hard part is being honest about the assumptions. Most people are not, and that is why most retail DCFs are wrong.
This guide walks through the actual DCF I just ran on Apple using Claude AI. Real audited financials from FY2020 through FY2024. Real 10-year Treasury yield (4.35%), real beta (1.10), real WACC (10.3%). Then the reverse-DCF: given Apple's actual stock price, what perpetuity growth rate is the market pricing in? The answer is the most useful number in this entire article.
What a DCF Actually Is
A discounted cash flow model is a present-value calculation. It says: a business is worth the sum of all the cash it will produce in the future, discounted back to today's dollars at a rate that reflects the riskiness of that cash. That is the entire intellectual idea. Everything else is execution.
The model has four components and you only need to get them roughly right:
- Free cash flow projection. Usually 5 to 10 years out. The further out, the less reliable.
- A discount rate, typically the weighted average cost of capital (WACC). For a US large-cap, somewhere between 7% and 12%.
- A terminal value, representing all cash flows after the explicit projection period. Usually the largest single component of total value.
- Net debt, subtracted at the end to convert enterprise value into equity value (or added back when cash exceeds debt, as with Apple).
The output is a single number: enterprise value. Subtract net debt. Divide by shares outstanding. That gives you fair value per share. Compare to the market price. The gap, if any, is your edge or your margin of safety.
The trap most retail investors fall into is assuming the model produces "the right answer." It does not. It produces an answer conditional on your assumptions. The whole skill of valuation is forming defensible assumptions, then stress-testing them. Claude AI does not change the model. It changes how fast you can build it, stress-test it, and pull the supporting data.
Why DCF on Apple Is the Right First Test Case
Apple is a near-ideal first DCF for three reasons.
First, the financials are stable and well-documented. Five years of clean audited 10-Ks on SEC EDGAR, no acquisition noise, no segment reshuffles, no restatements. Free cash flow has been within 25% of $100 billion for four consecutive years. That predictability removes most of the modeling guesswork that plagues younger or more volatile companies.
Second, Apple has a public capital structure that lets you compute WACC cleanly. Bond yields are publicly listed, beta is calculated by every data provider, the equity risk premium is a standard convention. You can build the WACC in five minutes.
Third, the market price gives you a useful target for the reverse-DCF. Apple is one of the most-watched stocks on the planet. The current price reflects the consensus view of every institutional investor. Backing into the implied growth rate tells you exactly what the market believes, and whether that belief is reasonable.
DCF fair value: ~$108 per share. Market price: ~$278. Gap: 60% overvalued or 60% under-believing the future. That's the question.
Claude's full DCF on Apple FY2024 financials: 5-year FCF projection, WACC build, terminal value, per-share fair value.
How to Run the DCF in Claude (3 Prompts)
The full workflow is three prompts. Total time: about 10 minutes. Total Claude tokens: well within free tier.
Prompt 1: Historical + Projection
Act as an equity analyst. Pull [TICKER]'s last 5 fiscal years of revenue, operating income, operating cash flow, and capex from SEC EDGAR. Compute free cash flow as OCF minus capex. Then project 5 years forward with explicit assumptions for revenue growth (declining glide path), operating margin, capex ratio, tax rate. Return historical and projected tables. Cite sources.
Prompt 2: WACC Calculation
Calculate WACC. Look up: current 10-year US Treasury yield as risk-free rate, [TICKER]'s 5-year monthly beta, the company's market cap and total debt, current bond yield. Use 5.5% equity risk premium and 24% effective tax rate. Show cost of equity (CAPM), after-tax cost of debt, capital structure weights, and final WACC. Cite each input.
Prompt 3: Full DCF + Reverse-DCF
Discount each year's FCF at the WACC to present value. Calculate terminal value using Gordon Growth (perpetuity growth = 2.5%). Sum all present values for enterprise value. Subtract net debt for equity value. Divide by shares outstanding for per-share fair value. Then run reverse-DCF: given current stock price, what perpetuity growth rate is implied? Output a clean table.
After running these three, you have a DCF you can defend in a conversation. Verify two of the audited line items against the actual 10-K PDF before forming a thesis. The numbers Claude returns are accurate over 95% of the time on major-cap companies, but the 5% miss is what burns investors.
Apple FY2024 DCF: The Real Numbers from This Morning
Historical Free Cash Flow (FY2020 to FY2024)
- FY2020: Revenue $274.5B, Operating income $66.3B, OCF $80.7B, Capex $7.3B, FCF $73.4B
- FY2021: Revenue $365.8B, Operating income $108.9B, OCF $104.0B, Capex $11.1B, FCF $93.0B
- FY2022: Revenue $394.3B, Operating income $119.4B, OCF $122.2B, Capex $10.7B, FCF $111.4B
- FY2023: Revenue $383.3B, Operating income $114.3B, OCF $110.5B, Capex $11.0B, FCF $99.6B
- FY2024: Revenue $391.0B, Operating income $123.2B, OCF $118.3B, Capex $9.4B, FCF $108.8B
Five-Year Projection (FY2025 to FY2029)
Assumptions: revenue growth declining from 5.0% to 3.0%, operating margin holding around 31.5% to 32.0%, capex 2.7% of revenue, tax rate 24%. Justification: Apple's iPhone-led hardware base is mature in developed markets. FY2023 to FY2024 showed essentially flat top-line growth. Future growth depends on Services (high-margin but a smaller base), India and emerging-market penetration, and a slow AI-driven device upgrade cycle. None support a return to the 33% FY2021 surge.
- FY2025E: Revenue $410.6B, Op income $129.3B, FCF $112.9B (+5.0% growth)
- FY2026E: Revenue $429.1B, Op income $136.0B, FCF $118.9B (+4.5%)
- FY2027E: Revenue $446.2B, Op income $142.8B, FCF $124.9B (+4.0%)
- FY2028E: Revenue $461.8B, Op income $147.8B, FCF $129.3B (+3.5%)
- FY2029E: Revenue $475.7B, Op income $152.2B, FCF $133.2B (+3.0%)
WACC Build
- Risk-free rate: 4.35% (10-year US Treasury yield, May 1, 2026, FRED)
- Equity risk premium: 5.50% (Damodaran convention)
- Beta (5-year monthly): 1.10 (Google Finance, CNBC consensus)
- Cost of equity (CAPM): 4.35% + 1.10 x 5.50% = 10.40%
- Pre-tax cost of debt: 5.00% (Apple Sep-2026 senior unsecured note YTM 5.02%)
- After-tax cost of debt: 5.00% x (1 - 0.24) = 3.80%
- Capital structure: market cap $4,110B (97.85% E), total debt $90.5B (2.15% D)
- WACC: 0.9785 x 10.40% + 0.0215 x 3.80% = 10.3%
DCF Result
PV of explicit-period FCFs (FY25 to FY29 discounted at 10.3%): $462B
Terminal value at FY2029, growing at 2.5% perpetually: $133.2B x 1.025 / (0.103 - 0.025) = $1,750B
PV of terminal value: $1,750B / 1.103^5 = $1,072B
Enterprise value: $462B + $1,072B = $1,534B
Plus net cash (Apple has more cash than debt): +$56.1B
Equity value: $1,590B
Shares outstanding: 14.68B
DCF fair value per share: roughly $108
$108 DCF fair value vs $278 market price. Either the model is wrong, the price is wrong, or the market expects more growth than 2.5% perpetuity.
Sensitivity matrix and reverse-DCF: at $278 market price, the implied perpetuity growth is roughly 7.85%, far above any reasonable terminal-state assumption.
Reverse-DCF: What Is the Market Actually Pricing In?
This is where the analysis gets interesting. Instead of computing fair value from your assumptions, you flip the model: take the market price as given and solve for the perpetuity growth rate that makes the math work.
Apple's market cap on May 1, 2026 was roughly $4,110B. Add debt of $90.5B and subtract cash of $146.6B (cash + marketable securities) to get an enterprise value of approximately $4,056B.
Required PV of terminal value: $4,056B - $462B (explicit FCFs) = $3,594B. Implied terminal value at the end of year 5: $3,594B x 1.103^5 = $5,867B.
Solve the Gordon Growth equation for g: $133.2B x (1 + g) / (10.3% - g) = $5,867B. Algebra: g = 7.85%.
That is the punchline. The market is pricing Apple as if it grows free cash flow at roughly 7.85% per year forever after FY2029. For context, real US GDP grows at about 2% to 2.5% in the long run. A perpetuity growth rate above the long-run economy is mathematically possible only if the company captures an ever-larger share of total economic activity. That is unusual.
Two interpretations are possible. One: the market is genuinely overestimating Apple's long-run growth and the stock is overvalued by 60%. Two: the discount rate is wrong, the projection is too conservative, or the terminal margin should be higher than the historical average. Most likely it is some combination, and the value of running the reverse-DCF is making that explicit so you can decide which assumption to argue with.
Common Mistakes That Cost You
Mistake 1: Using Optimistic Growth Assumptions
Most retail DCFs return a fair value above the market price. That is almost always because the analyst chose growth rates more optimistic than the historical run rate. If Apple grew revenue at 1% in FY2023, do not start with 8% in FY2025 unless you can articulate exactly why and back it with disclosed guidance.
Mistake 2: Skipping the Reverse-DCF
The reverse-DCF is more useful than the forward DCF most of the time. Forward DCFs tell you what you think. Reverse-DCFs tell you what the market thinks. You learn more from disagreeing with the market explicitly than from confirming your own bias.
Mistake 3: Anchoring on the Wrong WACC
A 1% change in WACC swings fair value by 15 to 25%. Use the 10-year Treasury, not the 2-year. Use the 5-year monthly beta, not the daily 90-day beta. Use a 5-5.5% equity risk premium, not a number you saw on Twitter. The WACC is where amateur DCFs fall apart fastest.
Mistake 4: Treating Terminal Value as an Afterthought
In Apple's DCF, terminal value is 70% of total enterprise value. If you got the explicit-period FCFs perfect but used a 4% perpetuity growth instead of 2.5%, the fair value swings by 25%. The terminal growth rate deserves more thought, not less.
Mistake 5: Not Stress-Testing Across WACC and Growth
A single fair-value number is misleading. Run the DCF at WACC = 9.0%, 10.3%, and 11.5%, and at terminal growth = 2.0%, 2.5%, and 3.0%. The output is a 3x3 sensitivity matrix. The range of fair values across that matrix is your real answer.
Frequently Asked Questions
Why does my DCF say Apple is overvalued?
Because most reasonable assumption sets do. The market is willing to pay for Apple's brand strength, cash returns to shareholders, and optionality on services and AI. None of those flow neatly into a DCF. The DCF is one input, not the answer.
Should I sell Apple based on the DCF?
This article is not investment advice. The DCF tells you that the market is implicitly assuming 7.85% perpetual growth. You decide whether that is plausible. If you owned Apple and disagreed with that assumption, you would have a reason to trim. If you agreed, you would have a reason to hold.
How often should I rerun the DCF?
Annually after each 10-K, plus once after any major guidance revision. Quarterly is overkill for a stable mega-cap. For volatile growth companies, rerun after each 10-Q.
Can Claude do the math wrong?
Yes. Verify the WACC components and the historical FCFs against the source filings. The arithmetic of the DCF is mechanical, but the inputs are not. Spot-check at least three numbers per run.
What to Watch Next
- v Does Apple's FY2025 actual revenue growth come in above or below the 5% projection?
- v Does the 10-year Treasury yield drift above 4.5% or below 4.0%, changing the WACC and the model?
- v Does Apple's services segment growth rate hold above 12%, supporting a higher terminal margin?
- v Does Apple meaningfully ramp share buybacks, shifting the per-share fair value upward without changing the business?
- v Does your own win rate improve over five DCF-driven decisions versus five gut-feel decisions?
Key Takeaways
- A DCF is a present-value calculation: project FCFs, discount at WACC, add a terminal value, subtract net debt.
- Apple FY2024 DCF: 10.3% WACC, 2.5% terminal growth, $108 fair value per share.
- Apple at $278 market price implies a 7.85% perpetuity growth rate, well above long-run GDP.
- The reverse-DCF is more useful than the forward DCF for understanding market expectations.
- Stress-test across WACC and terminal growth ranges. A single fair-value number is misleading.
- Claude can pull the financials, build the model, and run the math in 10 minutes. Verify two line items per run.
- Use the model to make assumptions explicit, not to replace judgment.
References
SEC EDGAR Apple Inc. (CIK 0000320193): sec.gov AAPL filings
Aswath Damodaran on equity risk premium and DCF: pages.stern.nyu.edu/~adamodar
FRED 10-Year Treasury yield: fred.stlouisfed.org
Investopedia DCF primer: investopedia.com/terms/d/dcf