Warren Edward Buffett’s Financial Statement Checklist is Not a Horoscope

Every financial content creator on social media has shared some version of this cheat sheet.  Few explain why the numbers matter.  Fewer still have read a single page of Warren Edward Buffett’s shareholder letters.  The image attributes these thresholds to Buffett, compiled by Brian Feroldi, a financial writer known for distilling investing frameworks into shareable graphics.  It is a heuristic, not a verbatim Buffett quote, and it deserves to be treated as one.  That does not make it useless.  It makes it worth explaining properly, instead of treating this as scripture.

Income Statement: Where the Moat Lives

Gross margin above 40 per cent is the first filter, and it exists for one reason.  A company that can charge far more than its cost of goods has pricing power.  Pricing power means a moat.  Buffett has said that he looks for businesses “so wonderful that an idiot can run them,” because eventually, one will.  A fat gross margin is the clearest signature of that wonder.  It tells you customers pay for the brand, not the ingredients.

Selling, General, and Administrative expenses (SG&A) margin below 30 per cent of gross profit and R&D margin below 30 per cent of gross profit work together.  Low SG&A signals operating discipline; the company is not haemorrhaging profit into overhead.  Low R&D signals something sharper: predictability.  Buffett avoided the technology sector for decades, and he said so in his 1999 letter, admitting he could not judge which technology companies would still be standing in twenty years.  A business that must spend heavily on research just to stay relevant is a business whose moat is eroding in real time.  He wants businesses where the product does not need reinventing every eighteen months.

Depreciation margin under 10 per cent and interest margin under 15 per cent both test capital intensity and leverage.  A company burning through plant and equipment needs constant reinvestment merely to stand still.  A company paying heavy interest relative to operating income is one bad year away from a liquidity crisis.  Buffett wrote in his 1987 letter that he would rather own “a business with terrific economics” than one requiring “ever-greater amounts of capital” to produce the same earnings.

Tax margin near the corporate rate is a quiet integrity check.  A company paying less than the statutory rate, year after year, is either exploiting a jurisdiction loophole that will eventually close, or cooking the books.  Buffett wants earnings that are real, not earnings engineered by a tax department.

Net income margin above 20 per cent and growing earnings per share is the scoreboard.  Everything above either produces that result, or it does not.

Balance Sheet: Survival Before Growth

Cash exceeding debt is not a suggestion.  It is a survival requirement.  Buffett wrote after the 2008 financial crisis that Berkshire Hathaway kept at least US$20 billion in cash so the company would never be forced to depend on the kindness of lenders during a panic.  Berkshire Hathaway’s cash and equivalents stood north of US$300 billion by 2024, a position critics mocked for years as excessive caution, right up until every market downturn vindicated it.

Adjusted debt-to-equity below 0.80 and no preferred stock both reinforce the same principle.  Preferred shareholders get paid before common shareholders in a liquidation, which dilutes the interest of the owner-investor Buffett wants to be.  He avoids capital structures where he stands behind someone else in the queue.

Retained earnings growing consistently, and treasury stock existing, measure whether management knows what to do with the cash the business throws off.  Growing retained earnings show reinvestment power.  Treasury stock shows discipline: buying back shares only when the price sits below intrinsic value, a test Buffett has applied publicly to Berkshire Hathaway’s own buybacks since 2018, refusing to repurchase stock he judged overpriced even when shareholders clamoured for it.

Cash Flow: Owner Earnings, Not Accounting Fiction

Capex margin under 25 per cent of net income is the single cleanest test of what Buffett calls “owner earnings,” a term he coined in his 1986 letter.  Net income is an accounting construct.  Owner earnings are what is left over after the business spends what it must to maintain itself.  A company that reinvests all its net income into capital expenditure is not generating wealth for its owners.  It is running to stand still.

See’s Candies: The Textbook Case

In 1972, Buffett and Charles Thomas Munger paid US$25 million for See’s Candies, a West Coast chocolate retailer earning US$4 million pre-tax on just US$8 million of net tangible assets.  That is a pre-tax return on capital above 50 per cent, the kind of gross margin and capital efficiency the checklist is built to detect.  Buffett nearly walked away over the price, later admitting in his shareholder letters that his own caution “could have scuttled a terrific purchase.”

The sellers took the deal.  By 2014, See’s Candies had generated US$1.9 billion in cumulative pre-tax earnings for Berkshire Hathaway, having required only US$40 million of additional reinvested capital across more than four decades.  Depreciation margin low, capex margin low, net income margin extraordinary.  See’s Candies is not an anecdote Buffett tells for colour.  It is the live demonstration of every ratio on that chart working in concert.

Precision Castparts: What Happens When You Ignore Your Own Rules

Contrast that with Precision Castparts, an aerospace parts manufacturer Berkshire Hathaway acquired for US$32.1 billion in 2016, its largest acquisition ever.  The business carried none of See’s Candies effortless capital efficiency.  Aerospace manufacturing demands heavy, continuous capital expenditure, and its fortunes swing with airline order cycles entirely outside management’s control.  Buffett later confessed, in his 2021 letter, that he had been “simply too optimistic about PCC’s normalised profit potential.”

The cost of that optimism was brutal.  Berkshire Hathaway wrote down US$9.8 billion of Precision Castparts’ value in August 2020 alone, contributing to a US$11 billion loss for the year, even as the rest of the conglomerate posted a US$42.5 billion profit.  Precision shed over 13,400 jobs, 40 per cent of its workforce.  Buffett did not blame the pandemic.  He blamed his own price discipline, admitting, “I paid too much for the company.”  That is what it looks like when a company’s economics sit on the wrong side of this checklist.

The Verdict

A gross margin above 40 per cent is not a magic number.  It is a proxy for a moat.  A debt-to-equity ratio below 0.80 is not superstition.  It is a proxy for survival.  Every threshold on that chart exists because Buffett learned, through decades of both triumphs like See’s Candies and admitted failures like Precision Castparts, that businesses obeying these patterns compound wealth, and businesses that do not eventually demand a confession in the annual letter.  Memorise the ratios if you like.  Understand why they exist, or you are simply reciting a horoscope with extra decimal places.

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Terence Nunis | Executive Chairman, Equinox Zenith | Author, The 1% Playbook: The Billionaire Cheat Code