Earnings can make a business look cleaner than it really is.

That is not because earnings are useless. They are still part of the language of business. But they are also shaped by accrual rules, management assumptions, and timing decisions that can make one quarter look stronger or weaker without changing the cash that actually came through the door.

That is why GreenDot Stocks uses free-cash-flow return on invested capital, or FCF-ROIC, instead of an earnings-based ROI measure. If the goal is to judge whether a company turns invested capital into something shareholders can actually use, cash is the better anchor.

Earnings Can Be Smoothed. Cash Has Less Makeup On.

The first problem with earnings is simple: accrual accounting is designed to match revenue and expenses to the period they belong in, not to the moment cash changes hands. That is useful for understanding a business, but it also creates room for judgment. As Investopedia's accrual accounting overview explains, companies can recognize revenue before cash is collected and record expenses when incurred rather than when paid.

That opens the door to a lot of perfectly legal distortion.

Costs can be capitalized instead of expensed immediately, which delays the pain and lifts current earnings. Capitalized costs are pushed onto the balance sheet and then run through depreciation or amortization over time. Useful-life assumptions can change. Amortization schedules can change. Reserve estimates can change. Tax items can swing reported profit. A quarter can look dramatically better even when the underlying cash economics barely moved.

Meta offers a current example of how noisy earnings can be. In its first-quarter 2026 earnings release, the company reported net income of $26.8 billion, but that figure was boosted by an $8.03 billion tax benefit tied to U.S. Treasury guidance on previously capitalized research and development costs. The operating business was still strong, but the headline earnings number told a cleaner story than the quarter's underlying economics.[7]

This is exactly why Warren Buffett's old discussion of "owner earnings" still matters. In Berkshire Hathaway's 1986 letter, he walked through how two identical economics can produce very different GAAP earnings because of purchase-accounting adjustments, even though the cash available to owners is the same.[1] Accounting exists for a reason. But accounting can also mislead when investors confuse reported precision with economic reality.

Free Cash Flow Gets Closer To Economic Reality

Free cash flow asks a harder and better question: after the company pays its operating bills and spends what it needs to maintain and grow the business, how much cash is actually left?

Cash is what funds the future. Cash can pay down debt. Cash can fund buybacks and dividends. Cash can be reinvested into new products, more capacity, or acquisitions. Cash is also much harder to fake for long. A company can stretch the truth around earnings with accounting choices for a quarter or two, but it cannot fake a long runway of real cash generation without eventually being exposed.

That is why free cash flow is so useful for investors. It starts from cash generated by operations and then forces you to subtract capital expenditures. In other words, it does not just ask whether the business reported a profit. It asks whether the business produced surplus cash after paying the real-world costs of staying competitive.

The cash flow statement also reveals things the income statement can hide. If receivables are rising, customers may not be paying on time. If inventory is building, demand may be weaker than revenue suggests. If suppliers are demanding faster payment, a company can feel stress even while EPS looks fine. Those are economic signals, and they show up in cash before they usually show up in the narrative.

Great Businesses Usually Do Not Hide From Cash

One of the most useful tells in investing is not just what management reports, but what management emphasizes.

The strongest businesses usually do not act like cash is an embarrassing appendix. They are comfortable talking about operating cash flow, capital expenditures, and capital return because cash is where the real strength shows up.

Microsoft (MSFT) is a good example. In its March 2026 quarter release, Microsoft reported $46.7 billion of net cash from operations for the quarter's trailing nine months and disclosed $80.1 billion of additions to property and equipment over the same period.[6] That does not make the stock automatically cheap, and it does not make AI infrastructure spending risk-free. But it does show management laying out the cash engine and the reinvestment bill in plain sight.

Meta Platforms (META) did the same in its first-quarter 2026 release. The company explicitly highlighted $32.2 billion of cash flow from operating activities, $12.4 billion of free cash flow, $19.8 billion of capital expenditures, and $81.2 billion of cash, cash equivalents, and marketable securities.[7] Again, that does not remove the risks around AI spending or regulation. It does show that the discussion starts from cash generation, not just EPS optics.

That pattern is not accidental. Businesses with something real to show are usually willing to show the cash.

Why This Matters For ROI

Return on invested capital is supposed to answer a basic question: if management puts a dollar into the business, what comes back?

If you use earnings in that equation, the answer can be skewed by all the accounting choices sitting between operations and reported net income. A company may look highly profitable because it capitalized costs, booked favorable tax items, or benefited from non-cash accounting adjustments. That may improve the ratio without improving the actual economics.

FCF-ROIC is tougher. It asks whether invested capital turns into cash that remains after the company funds the operating and capital needs of the business. That makes it closer to shareholder reality.

It also aligns better with what long-term investors actually want. If a company earns a beautiful accounting return but never turns that return into distributable or reinvestable cash, the shareholder does not own a compounding machine. The shareholder owns a story.

That distinction is a core advantage to the GreenDot Stocks screen. Some businesses produce attractive earnings but weak cash conversion. Others look less impressive on headline profit and far better on actual cash generation. The latter group is usually more interesting because real cash gives management options and gives investors protection. And the latter group is what we are screening for.

Better, Not Perfect

None of this means free cash flow should be treated as magic.

Free cash flow can be lumpy. A company can have a weak FCF year because it is making smart investments in data centers, manufacturing, or product capacity that will pay off later. Companies can also temporarily improve cash flow by squeezing working capital. That is why FCF should be judged over time, not from a single quarter in isolation.

But even with that caveat, it is still the better backbone for an ROI metric. Earnings tell you how the quarter was accounted for. Free cash flow tells you how much economic fuel the business produced.

That is the core reason GreenDot Stocks uses FCF-ROIC. The goal is not to reward the prettiest income statement. The goal is to find businesses that turn capital into cash, because cash is what can be reinvested, defended, or handed back to shareholders.

Measure What it can hide What it forces you to face
Earnings-based ROI Accrual timing, capitalized costs, tax noise, non-cash adjustments Whether accounting profit looks strong
FCF-ROIC Less room to hide recurring economic weakness Whether the business actually produced cash after real investment needs

If you want to see that philosophy applied to real companies instead of just theory, take a look at the GreenDot Stocks screener.

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