Warren Buffett's 4 Core Criteria for Quality Stocks

In his 1987 Berkshire Hathaway shareholder letter, Warren Buffett revealed a striking statistic: only 25 of 1,000 Fortune companies met his investment criteria. These weren't arbitrary standards—they were battle-tested filters for identifying businesses with what Buffett calls "durable competitive advantages."

The Philosophy: Pass or Fail

Unlike modern financial apps that give you a weighted score out of 100, Buffett uses a qualification system. A stock either meets his criteria or it doesn't. There's no "close enough."

This matters because Buffett isn't optimising for the best relative choice—he's looking for businesses so exceptional that they're worth holding forever.

Criterion 1: Return on Equity (ROE)

The most critical metric.

In his 1987 letter, Buffett stated two conditions:

1. Average ROE over 10 years must be above 20%
2. No single year in those 10 years should fall below 15%

Why These Specific Numbers?

The maths is elegant:

• ROE at 15% doubles your money every 5 years
• ROE at 20% doubles your money every 4 years

10% ROE

$673

10% ROE grows $100 to $673 over 20 years (market average)

15% ROE

$1,637

15% ROE grows $100 to $1,637 over 20 years (Buffett minimum)

20% ROE

$3,834

20% ROE grows $100 to $3,834 over 20 years (Buffett target)

The combination (20% average, 15% minimum) filters for elite, consistent performers. Companies that hit 50% ROE one year then crash to 5% the next don't qualify—even if their average looks good.

Why 10 Years?

A decade covers at least one full economic cycle. This proves the company can maintain high returns through recessions and booms alike, eliminating one-hit wonders who got lucky during favourable conditions.

"Only 25 of 1,000 Fortune companies met this standard—these are truly elite businesses with durable competitive advantages."

— 1987 Berkshire Hathaway Letter

Criterion 2: Debt-to-Equity Ratio

The leverage check.

Buffett's threshold: Less than 0.5 (or, put simply, debt should be less than half of equity).

Why This Matters

High ROE can be manufactured through leverage. A company might borrow heavily to boost returns, looking impressive on paper while carrying dangerous risk.

Buffett wants genuine business quality, not financial engineering. When you see high ROE combined with low debt, you're looking at an authentic competitive advantage—a business that generates excellent returns without needing to borrow.

The Buffett Quote

"Really good businesses usually don't need to borrow."

Companies with durable advantages generate more than enough earnings to self-finance their growth. They don't need debt for expansion, acquisitions, or dividends.

Criterion 3: Gross Margin

The pricing power indicator.

Buffett's threshold: Above 40% average over 10 years, with no year falling below 35%.

The Three Categories

Why Consistency Matters

A company with 60% gross margin one year and 25% the next has a problem. Wild margin swings indicate vulnerability—perhaps to commodity prices, competition, or regulatory changes.

Buffett looks for firms that maintain strong margins through economic cycles. This proves they have real pricing power that competitors can't erode.

Criterion 4: Current Ratio

The liquidity check.

Buffett's threshold: Greater than 1.5 (current assets should be 1.5x current liabilities).

This is simpler than the other criteria—it's a snapshot, not a 10-year average. Liquidity is a current-state measurement. A company either has the cash to meet its short-term obligations or it doesn't.

Special Cases

Strong moat companies sometimes operate with ratios below 1.0 due to working capital efficiency. Banks are excluded entirely—their business model makes traditional liquidity ratios meaningless.

Putting It Together

Buffett's criteria work as a filter, not a scorecard:

1. ROE ≥ 20% average, ≥ 15% minimum → Proves earning power
2. Debt-to-Equity < 0.5 → Proves it's not leverage
3. Gross Margin ≥ 40% average, ≥ 35% minimum → Proves pricing power
4. Current Ratio > 1.5 → Proves short-term stability

A stock must pass ALL four to qualify. Fail any one, and it's out—no matter how strong the others look.

Why So Strict?

Because Buffett isn't looking for good investments. He's looking for businesses so exceptional that he never needs to sell them.

"Our favorite holding period is forever."

When you're planning to hold a stock for decades, you need extraordinary confidence in the business. These four criteria identify companies with the kind of durable advantages that survive recessions, competitive threats, and management changes.

Buffett + Barsi: The Complete Picture

Buffett's criteria identify high-quality businesses. But quality alone doesn't tell you what to pay. That's where Luiz Barsi's 6% Rule comes in — it calculates the maximum price for a given dividend yield, ensuring you buy quality at the right price.

New to dividend investing? Start with our ASX Dividend Investing: A Beginner's Guide for a complete overview of franking credits, ex-dividend dates, and portfolio construction.

Frequently Asked Questions

Why does Buffett require 10 years of ROE data?

A decade covers at least one full economic cycle — including recessions and booms. This proves a company can maintain high returns through challenging conditions, not just during favourable market periods. Short-term results can be misleading.

Do any ASX stocks actually pass all four of Buffett's criteria?

Yes, but very few. Just as only 25 of 1,000 Fortune companies met Buffett's standards, a similarly small percentage of ASX companies qualify. Our screener applies industry-adjusted thresholds (for example, banks use a 12% ROE threshold instead of 20%) to account for structural differences.

Can a stock with high debt still be a good investment?

High debt is not inherently bad, but Buffett avoids it because it introduces risk. During downturns, companies with high debt must service interest payments regardless of whether profits fall. Buffett prefers businesses that generate returns through genuine competitive advantages rather than financial leverage.

How do Buffett's criteria differ for banks and financial stocks?

Banks operate with fundamentally different capital structures — high leverage is inherent to their business model. Our scoring system adjusts: banks skip the debt-to-equity and gross margin checks, and use a 12% ROE threshold instead of 20%. The focus shifts to ROE consistency, earnings predictability, and free cash flow.

Apply This Analysis

Want to see which ASX stocks meet Buffett's criteria? Our stock screener applies these exact standards to 500+ Australian companies, updated daily. See how our complete scoring methodology works.

We don't soften the criteria or create "almost passing" categories. A stock either meets Buffett's standards or it doesn't—just like Buffett himself would evaluate it.

Related reading:

• What Is ROE and Why Buffett Wants 20%+ — A deep dive into Buffett's most important criterion
• Top 10 ASX Dividend Stocks for 2026 — See which stocks score highest on Buffett + Barsi
• CBA vs NAB vs WBC vs ANZ — How the Big 4 banks compare under Buffett's quality lens
• How Franking Credits Work — The tax advantage that boosts ASX dividend returns
• SMSF Dividend Strategy — Apply Buffett's quality filter to protect your super

Important: This is general information only, not financial advice. Past performance does not guarantee future results. Always do your own research or consult a licensed financial adviser before making investment decisions. See our full disclaimer.