The language of business. Every company tells its story through three financial statements — learn to read them and you can size up any business on earth. The secret: they all connect into one loop.
1The big idea
Accounting is storytelling with numbers
A business answers three questions every period, and each has its own statement:
What do we own/owe?→ the Balance Sheet. A snapshot of financial position at one moment.
Did we make a profit?→ the Income Statement. Performance over a period of time.
Where did cash go?→ the Cash Flow Statement. Actual cash moving in and out over a period.
Memory hook 🧠Position, Performance, Cash. One photo (snapshot) and two videos (over time). Profit ≠ cash — that gap is the whole drama of accounting.
2The one equation that never breaks
The Accounting Equation
Everything in accounting rests on a single identity that must always balance. It simply says: everything a company owns was paid for either by borrowing or by owners.
The foundation of all accounting
Assets =
Liabilities +
Equity
What you OWN = what you OWE + the owners' stake
The left side (resources) always equals the right side (claims on those resources).
RearrangedEquity = Assets − Liabilities. The owners get whatever is left after debts are paid. That leftover is also called "net worth" or "book value."
3Why the books always balance
Double-Entry & Debits/Credits
Every transaction touches at least two accounts so the equation stays balanced. Money never appears from nowhere — if something goes up, something else must adjust.
Any Account (a "T")
Debit (Dr)
left side
Credit (Cr)
right side
The golden ruleFor every transaction, total Debits = total Credits. Debits increase Assets & Expenses; Credits increase Liabilities, Equity & Revenue. (Debit ≠ "bad", Credit ≠ "good" — they're just left and right.)
ExampleBuy a $10k machine with cash: Debit Equipment +$10k (asset up), Credit Cash −$10k (asset down). Two entries, equation still balances.
A photo of the company at one instant (e.g. Dec 31). It's just the accounting equation, expanded. Assets on top/left; how they were financed below/right.
Both columns are always equal in total — that's why it's called a balance sheet.
Memory hook 🧠Assets are listed by liquidity (how fast they turn to cash): cash at the top, buildings at the bottom. Liabilities by due date: soonest first.
5Statement 2 · the performance video
The Income Statement (P&L)
Shows profit over a period (a quarter, a year). It's a waterfall: start with sales at the top, subtract costs in layers, and what survives at the bottom is net income.
Each red bar is a cost peeled away. The amber bar at the end = the "bottom line."
The waterfall, in words
Revenue − COGS = Gross Profit Gross Profit − Operating Expenses = Operating Income (EBIT) EBIT − Interest − Tax = Net Income
Memory hook 🧠Think of it as a colander: revenue pours in the top, costs strain out at each level, and the "bottom line" is what drips through.
6Statement 3 · the cash truth
The Cash Flow Statement
Profit can be an illusion (you can book a sale before getting paid). The cash flow statement tracks real cash moving in and out, split into three buckets.
Operating
CFO
Cash from the core business — selling goods, paying suppliers & staff. The healthiest source.
Investing
CFI
Buying/selling long-term assets — equipment, acquisitions, investments. Usually negative for growing firms.
Add that change to last period's cash → this period's ending cash (which lands on the Balance Sheet).
Red flag to learnA company with rising profits but negative operating cash flow is a warning sign — it's booking sales it isn't collecting. "Profit is opinion, cash is fact."
7★ The whole point
How the Three Statements Connect
This is the single most valuable thing in the whole module. The three statements aren't separate — they link into one loop. Master this diagram and accounting clicks into place.
The loop: Net Income flows into BOTH the Cash Flow statement AND Retained Earnings. Ending Cash flows to the Balance Sheet's cash line. Everything reconciles.
Link 1Net Income (Income Statement) → top line of the Cash Flow statement.
Link 2Net Income → added to Retained Earnings in Equity on the Balance Sheet.
Link 3Ending Cash (Cash Flow) → the Cash line at the top of the Balance Sheet.
Memory hook 🧠Net income is the hinge. It's calculated once on the P&L, then feeds two places. If you can redraw these 3 arrows from memory, you understand accounting better than most managers.
8The profit-vs-cash gap
Accrual vs Cash Accounting
This explains why profit and cash differ — the source of most confusion (and most accounting tricks).
Accrual basisRecord revenue when earned and expenses when incurred — regardless of when cash moves. Standard for most companies (GAAP/IFRS). Matches effort to result.
Cash basisRecord only when cash actually changes hands. Simpler, used by tiny businesses, but can distort the timing of performance.
ExampleYou deliver a $5k project in March, get paid in May. Accrual: revenue booked in March. Cash: nothing until May. Same business, two very different-looking months.
Key terms born hereAccounts Receivable = sales made but not yet collected (an asset). Accounts Payable = expenses incurred but not yet paid (a liability). Depreciation = spreading an asset's cost over its useful life.
9Putting it to work
Reading a Real Report (the 10-K)
A 10-K is a company's annual report to regulators. Your roadmap deliverable is to read one and map its three statements. Here's the fast path:
1 · Skim the MD&A"Management Discussion & Analysis" — the story in management's own words. Read this first for context.
2 · Find the 3 statementsLocate the Balance Sheet, Income Statement, Cash Flow. Confirm the dates & periods.
3 · Trace the linksFind net income on the P&L → spot it atop the cash flow → find retained earnings on the balance sheet. See the loop live.
4 · Read the footnotesWhere the real story hides — accounting choices, debt details, risks. Pros read these first.
Tie it together 🧠You can now answer all three founding questions for any public company: what it owns, whether it profits, and where its cash goes. Next module (Week 6) turns these into ratios to judge how healthy it really is.
🎯 Active recall
Cover the answer, say it aloud, then tap to check. The big one: re-draw the 3-statement connection diagram from memory. Revisit today, +3 days, +1 week.
Write the accounting equation and what each part means.
Assets = Liabilities + Equity. What you own = what you owe + the owners' stake. It must always balance.
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Match each statement to its question.
Balance Sheet → "what do we own/owe?" (snapshot). Income Statement → "did we profit?" (over a period). Cash Flow → "where did cash go?" (over a period).
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In double-entry, what must always be true?
Total debits = total credits for every transaction. Each transaction hits at least two accounts so the equation stays balanced.
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Walk down the income statement waterfall.
Revenue − COGS = Gross Profit; − Operating Expenses = Operating Income (EBIT); − Interest − Tax = Net Income.
Net Income flows to the top of the Cash Flow statement AND into Retained Earnings on the Balance Sheet. Ending Cash from the Cash Flow statement becomes the Cash line on the Balance Sheet.
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Accrual vs cash accounting — the core difference?
Accrual records revenue when earned & expenses when incurred (regardless of cash timing). Cash records only when money actually moves. Accrual is the standard.
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Why can a profitable company still run out of cash?
Under accrual, sales are booked before cash is collected (accounts receivable). If customers pay slowly, profit looks fine while cash dries up. "Profit is opinion, cash is fact."
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Module 4 of your MBA · Phase 2 begins · Re-draw the 3-statement loop from memory before moving on. 🧾