Reading Financial Statements ① The Three Statements: How the Income Statement, Balance Sheet & Cash Flow Interlock

This is the first installment of ProfitVision LAB's "Reading Financial Statements & the Notes — A Primer." Ten years ago, the very first financial-statements curriculum I ran for my investing club started right here. A decade later, the skeleton of the three statements has not changed by a single word — all that changes is the companies and the numbers. So for this revision I swapped the single example I used back then for five live companies drawn from completely different industries, so you can see clearly how the same skeleton supports five wildly different businesses.

Before we begin, let me lay out the two stances of this series — the standard posture a CPA or CFA takes when reading financials in practice. First, IFRS (International Financial Reporting Standards) is our backbone, with US GAAP for contrast. Taiwanese stocks and most international companies (including this series' TSMC) report under IFRS, while U.S. stocks (NVDA, JPM, MNST, COST) report under US GAAP; the two frameworks differ materially on revenue recognition, inventory valuation and the classification of financial assets, and I will flag the key divergences as we hit them. Second, what we read is not the "numbers" but the accounting judgment behind them — for the same transaction, how much discretion does the standard hand to management, and where is that discretion being used? That is the line that separates the professional from the amateur.

Here is the single most important sentence first: do not read the financial report as three separate documents. It is a three-voice ensemble — listen to any voice on its own and it will lie to you.

1. Three Statements, Each Answering One Question

Accounting compresses a company's operations into three statements. Each answers just one question:

The difference between a "flow" and a "stock" is where beginners most often trip. The annual income statement is the result of summing all four quarters of the year; the annual balance sheet captures only the snapshot from the very last day of the year. One is "accumulated over the whole year," the other is "a single instant" — confuse them and you won't even be able to reconcile where the numbers came from.

And why must you read all three? Because they will contradict each other — and where they contradict is where the truth lives. When a company's income statement shows handsome profits while its cash flow statement bleeds for years, that crack is often the first sign of accounting fraud or a deteriorating business (precisely the theme of installments four and six in this series).

2. The Thread That Stitches the Three Together: A = L + E

No matter how many accounts a balance sheet contains, the single most central idea is one identity:

In plain terms: every resource a company holds (assets) can come from only two sources — money borrowed from others (liabilities), or money the shareholders put in plus earnings retained (equity). So the equals sign always holds: move the left side and the right side must move in lockstep. Let's walk through three of the most common transactions:

• Pay a $1,000 cash dividend: Assets (cash −1,000) = Liabilities + Equity (retained earnings −1,000). Each side falls by 1,000 — balanced.
• Issue $500 of long-term corporate bonds to borrow: Assets (cash +500) = Liabilities (long-term debt +500) + Equity. Each side rises by 500 — balanced.
• Spend $5 buying raw materials into inventory: Assets (cash −5, inventory +5) = Liabilities + Equity. A swap within assets; the total is unchanged — balanced.

Master this identity and you can "simulate" the financial-statement consequences of any move a company makes — buying a plant, borrowing, paying dividends, repurchasing shares, writing off bad debt — none of it escapes A = L + E. This is the inner discipline of reading financials, and the next four installments are all built on top of it.

Tying the statements out: where do they connect?

The three statements aren't written in isolation; they're locked together by a few "connectors":

• The income statement's "net income" → flows into the balance sheet's "retained earnings" (earnings not paid out accumulate into shareholders' equity).
• The income statement's "net income" → is simultaneously the first line of the cash flow statement (indirect method); from there you adjust downward for non-cash items to back out the real cash.
• The cash flow statement's "ending cash" → equals the balance of the "cash" account on the balance sheet.

In other words: net income shows up on the seams of all three statements at once. Precisely because of this, those who cook the books find it very hard to dress up one statement without leaving a tell on another — which is why a seasoned analyst always reads all three together.

3. Why Does Every Industry's Financials Look Different?

This is the myth this series most wants to shatter: there is no "one-size-fits-all financial-statement template." Two statements may both be called "income statements," yet their faces differ enormously across industries. Let's have our five protagonists introduce themselves; the next four installments will unpack them one by one:

The most extreme contrast is NVDA versus TSMC — both are in semiconductors, yet their financials are two faces of the same mirror. NVDA spends just $6B of capex a year and rakes in $120B of net income (it outsources the grueling job of building fabs to TSMC); TSMC, by contrast, must pour $41B a year into building fabs to defend its process leadership. One is so light it could fly, the other as heavy as a mountain — this is the financial divide between "fabless vs. foundry," and we'll do the math for you in installments three and four.

What really catches beginners off guard, though, is JPMorgan. Open a bank's income statement and you'll find no "cost of goods sold" and no "gross profit." That's because a bank's business isn't selling things — it's "taking money in and lending money out, earning the spread in between." Its core profit engine is called Net Interest Income, and it carries an account that manufacturers don't have at all: Provision for Credit Losses — setting aside, in advance, losses for loans that may not be recoverable in the future. More counterintuitive still: on a bank's balance sheet, "deposits" are a liability (the bank owes you) and "loans" are an asset (others owe the bank).

So if you read a bank with habits built for manufacturing, the whole thing falls apart. The first lesson in reading financials isn't memorizing accounts — it's first asking: what kind of business is this?

4. Where This Six-Part Course Is Taking You

Once the skeleton is built, the next five installments will add flesh to the bones, one piece at a time:

1. ① The Three Statements (this piece) — establishing the inner discipline of A = L + E and how the three statements tie out.
2. ② The Income Statement — reading from revenue all the way down to EPS, seeing NVDA's high gross margin and JPM's "no gross margin."
3. ③ The Balance Sheet — the stock concept, the important accounts, turnover days; TSMC's heavy assets vs. Monster's zero debt.
4. ④ The Cash Flow Statement — the defensive statement, the three activities, free cash flow; seeing how Costco "runs its business on suppliers' money."
5. ⑤ Ratio Analysis — the four dimensions of growth, profitability, safety and efficiency + the DuPont breakdown + industry KPIs.
6. ⑥ Tail Risk & Earnings Calls — the devil is in the details: seven blow-up cases + how to mine a company's true intent from earnings-call transcripts.

Finish these six and you won't become an accountant — but you'll own something far more valuable: when a financial report is placed in front of you, you'll know where to look, which two numbers to reconcile, and which page of footnotes to turn to. This is what I always say: I teach you how to think, not just what to do.

FAQ

Is it okay to read just one of the three statements?

No. The income statement can be fooled by "paper profits" inflated through accounts receivable; the balance sheet can't reveal earnings momentum; the cash flow statement can't reveal trends. The value of the three lies precisely in cross-validation: when paper profits look handsome while cash flow bleeds, that crack is exactly where you must stay alert.

Why is the accounting identity A = L + E so important?

Because it is the underlying logic of every change in the financials. Any transaction — borrowing, buying a plant, paying a dividend, a repurchase — moves both sides of the equation at once. Master it and you can simulate, in your head, the true consequence of an operating move on the statements, instead of rote-memorizing accounts.

Why do a bank's financials differ so much from an ordinary company's?

Because a bank's business is "earning the spread," not "selling things." So it has no cost of goods sold and no gross profit; its core is net interest income. And deposits are a liability to the bank while loans are an asset — the opposite of ordinary intuition. Before reading the financials, judging "what kind of business is this?" matters more than memorizing accounts.

ProfitVision LAB · Shiba the Disciplined | I teach you how to think, not just what to do