The Month You're Profitable but Broke

You've probably had this moment: last month's settlement statement clearly showed a profit, but your bank balance actually went down, leaving you unsure whether the business is really doing well. The numbers weren't lying. Profit and cash are simply two different stories, recorded in two different ledgers from the start. The skill of interpreting that gap is what it means to read free cash flow, and today we'll practice that skill using Amazon's financial filings as our textbook. Even a company with over $700 billion in annual revenue posted the same confusing report card we did last year: profit up, cash down sharply.

Why Profit and Cash Move Independently

Net income on the income statement is a number calculated from a period's business performance. Free cash flow, on the other hand, is the money actually left in hand — cash generated by operations minus cash spent on capital investments. When you buy equipment, the expense is spread across several years in your profit figures, but the cash leaves your account all at once, right then. That's why the two numbers frequently diverge, and tracking the direction and reason for that divergence is the core of reading free cash flow. This is also why people who've read financial statements for a long time compare profit to a report card and cash to physical stamina: good grades don't matter if you run out of stamina before next semester. So if profit looks good but cash is drying up, the first move isn't to assume the money vanished — it's to check whether it simply moved somewhere else.

Reading Amazon's Report Card in Layers

Amazon's income statement has visibly improved over the past three years. Operating margin climbed for three straight years — from 2.4% in FY2022 to 6.4% in FY2023, 10.7% in FY2024, and 11.2% in FY2025 — while operating income more than tripled, from $24.9 billion to $80.0 billion. Net income also expanded 2.3-fold, from $33.4 billion to $77.7 billion. This is a textbook case of what happens when a long investment phase turns into a harvest phase: margins improve step by step, not in sudden jumps.

But open the cash flow statement, and the signal reverses. Free cash flow plunged from $32.9 billion in FY2024 to $7.7 billion in FY2025. If you stop reading there, it's easy to misread this as a company suddenly turning sour. Go one step further and check the balance sheet, though, and over the same period assets grew 31%, from $624.9 billion to $818.0 billion. The cash didn't evaporate — it simply changed form, moving into future-facing infrastructure like AI data centers. What's more, the debt-to-equity ratio fell from 0.48x in FY2022 to 0.17x in FY2025, which supports a reading that this massive reinvestment is being funded by cash the business itself generates, not by debt. Only by layering all three statements together does the full picture emerge: a company that plants its earnings into the future first.

Layering Your Own Three Numbers

The same reading method transfers directly to a one-person business. Each month, write down just three things. First, net income from your settlement statement. Second, the change in your bank balance. Third, where the gap between those two numbers actually sits. Say last month's net income was 3 million won, but your bank balance dropped by 1 million won — you need to find where that 4 million-won gap went. One line is enough: did you stock up on inventory ahead of the next season, buy equipment or software, or is it tied up in receivables from a client? If the destination is an asset that will grow revenue, that month's thin bank balance looks a lot like Amazon-style reinvestment; if you can't explain the destination, that's the real warning light. Also check where the funding for any expansion came from — whether a loan covered the added equipment or your own business cash did, because the same expansion carries very different stamina depending on the answer. None of this requires accounting knowledge. One settlement statement, your banking app, and five minutes at month's end are enough.

One Thing to Do Today

Tonight, spend just five minutes writing last month's net income and your bank balance change side by side, then note in one line where the gap went. Stack up that one line for a few months, and you'll start to see where your business's cash actually flows — and reading free cash flow becomes more than a skill for picking apart someone else's company. It becomes a tool for reading your own bank account.