The Graham Price Formula

Benjamin Graham gave investors a gift: a simple formula that estimates fair value in seconds. While modern investors use spreadsheets and discounted cash flow models, Graham's formula still works because it focuses on the fundamentals that actually drive long-term value.

TL;DR

• Graham's formula provides quick value estimates: Fair Value = EPS × (8.5 + 2g), where g is expected growth rate
• It focuses on earnings power: The formula anchors valuation to current earnings, not hopes or hype
• Growth matters, but not too much: Graham's multiplier caps growth assumptions at reasonable levels
• Use it as a starting point: The formula gives you a baseline, then adjust for quality, risk, and competitive position
• Simplicity is powerful: Fast estimates help you quickly filter opportunities and avoid overvalued stocks

What Is the Graham Price Formula?

Benjamin Graham, the father of value investing, created this formula to give investors a rational baseline for stock valuation. The formula is:

Fair Value = EPS × (8.5 + 2g)

Where:

• EPS = Earnings per share (trailing twelve months)
• 8.5 = Base multiple for a no-growth company
• g = Expected annual earnings growth rate (%)

That's it. No discounting future cash flows. No terminal value calculations. No weighted average cost of capital. Just current earnings and reasonable growth expectations.

Graham designed this formula in an era when computers didn't exist and investors needed quick mental math to evaluate opportunities. The simplicity forced discipline: if you can't estimate earnings and growth, you shouldn't own the stock.

Breaking Down the Components

The 8.5 base multiple: Graham argued that a company with zero growth deserves a P/E ratio of 8.5. This implies an earnings yield of about 11.8% (1 divided by 8.5), which provided a reasonable return above bond yields in his era.

Today's bond yields are lower, so some investors adjust the base multiple upward to 9 or 10. But the principle remains: a company that isn't growing still has value if it generates stable earnings.

Think of the base multiple as the price you'd pay for a perpetual stream of current earnings. If a company earns $10 per share forever, paying $85 gives you an 11.8% annual return if those earnings flow to shareholders.

The growth multiplier (2g): Graham recognized that growth adds value, but he capped the growth benefit to prevent investors from paying infinite prices for hot growth stories. Each percentage point of expected growth adds 2 to the P/E multiple.

A company growing at 5% annually deserves a multiple of 8.5 + (2 × 5) = 18.5. A company growing at 10% deserves a multiple of 8.5 + (2 × 10) = 28.5. A company growing at 20% deserves a multiple of 8.5 + (2 × 20) = 48.5.

Notice how the formula prevents absurd valuations. Even if you believe a company can grow at 25% annually, the formula only takes you to a P/E of 58.5. Compare that to the triple-digit P/E ratios the market sometimes assigns to high-growth companies.

Graham deliberately limited this multiple because high growth rarely persists. Competition, market saturation, and the law of large numbers eventually slow every company down.

How to Use the Formula

Start with trailing earnings per share. Don't use "adjusted" earnings or "non-GAAP" earnings unless you've verified that adjustments make sense. Management teams love to exclude "one-time" charges that somehow recur every year.

Check earnings per share for the last four quarters. Add them up. That's your EPS input. If the company earned $5 per share over the past year, start with $5.

Next, estimate a reasonable growth rate. This is the hardest part. You need to forecast how fast earnings will grow annually over the next 5-10 years.

Sources for growth estimates:

• Historical earnings growth over the past 5-10 years
• Analyst consensus estimates (use with caution)
• Industry growth rates
• Company guidance (discounted by 20-30% for optimism)
• Your own analysis of competitive position and market opportunity

Be conservative. If historical growth is 12% but you see signs of maturity or increased competition, use 8% or 10%. If growth has been erratic or relies on acquisitions, use a lower number. Err on the side of pessimism, not optimism.

Plug the numbers into the formula. If EPS is $5 and expected growth is 8%, then fair value = $5 × (8.5 + 2 × 8) = $5 × 24.5 = $122.50.

Compare this to the current stock price. If the stock trades at $90, it's potentially undervalued. If it trades at $150, it's overvalued according to Graham's method.

A Practical Example

Let's value a hypothetical company called "SteadyCo." Current EPS is $8. The company has grown earnings at 6% annually over the past decade. Industry growth is steady at 4-5%. Management guides for 7% growth this year.

Based on this data, we estimate 6% long-term growth (the historical average, slightly above industry but conservative given management's confidence).

Graham formula calculation: Fair Value = $8 × (8.5 + 2 × 6)
Fair Value = $8 × 20.5
Fair Value = $164

If SteadyCo trades at $130, the Graham formula suggests it's undervalued by about 26%. That's a solid margin of safety.

If SteadyCo trades at $180, it's overvalued by about 10%. You might wait for a better entry point.

If SteadyCo trades at $200, it's 22% overvalued. Graham would tell you to move on to the next opportunity.

Use the WSY app to calculate Graham Price instantly across multiple stocks, saving you time and avoiding arithmetic errors.

Adjustments for Quality and Risk

Graham's formula gives you a baseline, but not every company deserves the full calculated value. High-quality businesses with durable competitive advantages deserve a premium. Low-quality businesses with uncertain futures deserve a discount.

Quality premium factors:

• Strong economic moat (brand, network effects, cost advantages)
• Consistent profitability over 10+ years
• Low debt and strong balance sheet
• Excellent management with skin in the game
• Recession-resistant business model

If a company has all of these traits, you might accept paying fair value rather than demanding a discount. You might even pay 10-20% above Graham's calculated fair value for an exceptional business.

Quality discount factors:

• Weak competitive position, easy for competitors to replicate
• Cyclical earnings that fluctuate wildly
• High debt levels relative to equity
• Poor management track record
• Industry in decline or facing disruption

If a company has these problems, demand a 30-50% discount to Graham's calculated fair value. The formula assumes average quality. Below-average quality requires extra cushion.

For most companies, Graham's formula is a good estimate of fair value. For truly wonderful companies, add 10-20%. For questionable companies, subtract 30-50%. This adjustment system keeps you from overpaying for quality while still recognizing that great businesses justify somewhat higher prices.

Learn more about identifying wonderful companies before applying valuation formulas.

Limitations of the Graham Formula

No single formula captures the full complexity of business valuation. The Graham formula has blind spots you need to understand.

It ignores capital structure: The formula only looks at earnings per share. It doesn't account for debt levels, cash on the balance sheet, or pension liabilities. Two companies with identical EPS and growth might have vastly different risk profiles if one carries five times more debt.

Always check debt ratios separately. High debt reduces the value you should assign to earnings since interest payments consume cash before shareholders see anything.

It assumes stable earnings: The formula works best for companies with predictable, consistent earnings. It breaks down for cyclical businesses, startups burning cash, or companies in turnaround situations.

If earnings fluctuate dramatically year to year, use normalized earnings (average over a full business cycle) rather than the most recent year. This prevents you from assigning high values at cyclical peaks or low values at cyclical troughs.

Growth estimates are subjective: The biggest weakness is the growth rate input. If you're too optimistic, you'll calculate an inflated fair value and overpay. If you're too pessimistic, you'll miss good opportunities.

This is why margin of safety matters. Even if your growth estimate is 20% too optimistic, a 30% discount to calculated fair value still protects you from overpaying.

It doesn't incorporate quality directly: The formula treats all earnings equally. But $5 of earnings from a company with a durable moat is worth more than $5 of earnings from a commodity business facing intense competition.

This is where the quality adjustments come in. After calculating Graham's fair value, ask whether this company deserves a premium or discount based on business quality.

Modern Applications

Graham created this formula in the 1960s and 1970s. Does it still work? Mostly yes, with small modifications.

Some modern investors adjust the base multiple from 8.5 to 10 or even 12 to reflect today's lower interest rates. When 10-year Treasury yields were 6-8%, an 11.8% earnings yield (implied by the 8.5 multiple) made sense. When Treasury yields are 3-4%, you might accept an 8-10% earnings yield, implying a base multiple of 10-12.

The growth multiplier of 2g still makes sense. It prevents absurd valuations while rewarding genuine growth. In fact, during tech bubbles when the market assigns 100x earnings to unprofitable companies, Graham's formula provides a reality check.

The formula works particularly well as a screening tool. Calculate Graham fair value for 50 stocks in an industry. The ones trading at 40-50% below calculated fair value might deserve deeper research. The ones trading at 50% above can be immediately rejected.

You can also use the formula in reverse. If a stock trades at $100 and earns $4 per share, what growth rate would justify that price?

$100 = $4 × (8.5 + 2g)
25 = 8.5 + 2g
16.5 = 2g
g = 16.5 ÷ 2 = 8.25%

So the market is pricing in 8.25% annual growth. Ask yourself: is that growth rate realistic given the company's competitive position, industry dynamics, and historical performance? If yes, the stock is fairly valued. If no, it's overvalued.

Comparing to Other Valuation Methods

Graham's formula is one tool in the value investor's toolkit. How does it compare to other methods?

Versus P/E ratio: A raw P/E ratio tells you what multiple the market assigns to current earnings but provides no judgment about whether that multiple is justified. Graham's formula tells you what multiple is justified based on growth expectations.

A stock with a P/E of 20 might be cheap or expensive depending on its growth rate. If growth is 15%, a P/E of 20 is reasonable by Graham's formula. If growth is 5%, a P/E of 20 is expensive.

Versus discounted cash flow (DCF): DCF models project future cash flows and discount them to present value. This is theoretically the "correct" way to value a business. But DCF requires many assumptions: growth rates for 10 years, terminal values, discount rates, and more.

Graham's formula achieves 80% of DCF's accuracy with 20% of the effort. For quick screening and initial evaluation, that trade-off makes sense.

Use Graham's formula for initial filtering. If a stock looks interesting, then build a full DCF model to confirm your analysis.

Versus earnings yield: Earnings yield (earnings divided by price) tells you what return you'd earn if all earnings flowed to you and stayed constant forever. Graham's formula builds on earnings yield by incorporating growth.

Both approaches complement each other. High earnings yield flags potential value. Graham's formula helps you decide if that value is real after accounting for growth expectations.

What Could Go Wrong?

Overestimating growth: You might be too optimistic about future earnings growth, leading to inflated fair value estimates.

Mitigation: Use historical growth as a starting point, then discount it by 20-30%. If a company grew at 12% over ten years, use 8-9% in your formula. This conservatism provides a margin of safety in your inputs.

Trusting manipulated earnings: Companies sometimes inflate earnings through accounting tricks that won't be sustainable.

Mitigation: Always verify that free cash flow roughly matches reported earnings. If FCF is consistently lower than net income, dig into the cash flow statement to understand why.

Ignoring cyclical factors: Applying the formula at a cyclical peak leads to inflated fair values.

Mitigation: For cyclical companies, use normalized earnings (average over a full cycle) rather than peak earnings. If a company earned $10, $12, $15, $8, and $10 over five years, use $11 (the average) in your formula.

Forgetting about debt: The formula values equity but doesn't directly account for financial risk from leverage.

Mitigation: After calculating Graham fair value, check the debt-to-equity ratio. If it's above 1.0, reduce your fair value estimate by 10-20% to account for the increased risk.

Mistaking value traps: A stock might look cheap by the Graham formula because the market correctly anticipates declining earnings.

Mitigation: Never use the formula in isolation. Always check revenue trends, margin trends, competitive position, and industry outlook. The formula assumes earnings will continue. If the business is deteriorating, the formula will mislead you. Read about how to spot value traps before they hurt your returns.

Next Steps: Using the Graham Formula

• Calculate current EPS: Use trailing twelve months, not "adjusted" figures
• Estimate conservative growth: Historical average discounted by 20-30%
• Apply the formula: Fair Value = EPS × (8.5 + 2g)
• Compare to market price: Calculate the discount or premium
• Adjust for quality: Premium for great businesses, discount for weak ones
• Verify with cash flow: Ensure free cash flow supports earnings
• Check debt levels: Reduce fair value if debt ratios are high
• Demand margin of safety: Only buy at 30%+ discount to calculated fair value
• Use as a screen: Filter dozens of stocks quickly, then research the undervalued ones
• Cross-check with other methods: Compare to earnings yield and DCF models
• Simplify with technology: Use the WSY app to calculate Graham Price across multiple stocks instantly
• Review your estimates: Track accuracy over time to improve your growth forecasting

The Graham formula won't make you a perfect investor, but it will make you a more disciplined one. When growth stocks trade at 50x or 100x earnings, the formula provides a sanity check: even assuming aggressive growth, does that valuation make sense?

When value stocks trade at 8x earnings, the formula helps you determine if they're genuine bargains or value traps.

Start using the formula today. Pick five stocks you're interested in. Calculate Graham fair value for each. Compare to current prices. Note which ones offer the best discount to fair value. That's your research priority list.

The formula takes 60 seconds per stock once you have the data. That's incredibly efficient for initial screening. Once you've filtered hundreds of stocks down to a handful of candidates, then you can invest hours in deep research.

Keep the riddim steady. Trust the fundamentals. And remember that Benjamin Graham's simple formula has guided successful investors for over 50 years because it focuses on what matters: earnings power and reasonable growth expectations.