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Accounting

The balance sheet, both sides

By SuperdayReps · Wharton MBA · ex-Greenhill · investment banking interview coaching

6 min read · updated July 2, 2026

The balance sheet answers two questions at once: what does the company own, and where did the money come from to pay for it? That's the whole thing. Everything the company controls (the left side) was funded either by borrowing (liabilities) or by owners putting in and keeping capital (equity). So the two sides are the same pile of value viewed two ways.

That's why it balances. Not by accounting magic. By definition.

Assets=Liabilities+Equity\text{Assets} = \text{Liabilities} + \text{Equity}

Every dollar of assets on the left was funded by a dollar of liabilities or equity on the right. Tip the scale and it has to level out again.

It's a snapshot, not a movie

The income statement and cash flow statement cover a period: a quarter, a year. They're movies. The balance sheet is a single frame, frozen on one date. "As of December 31" tells you the position at that instant, not what happened over the year.

This matters more than beginners think. When someone changes a line item in an interview, the income statement records the flow for the period, and the balance sheet shows the ending level. The cash flow statement is the bridge between the two. Get that framing right and the walk-through in Walk me through the three statements stops feeling like memorization.

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Frequently asked

What is the balance sheet?
The balance sheet is a point-in-time snapshot of what a company owns and how it paid for it. Everything on the left, the assets, was funded either by borrowing, the liabilities, or by owners' capital, the equity. That is why assets always equal liabilities plus equity: the two sides are the same value viewed twice.
Why does the balance sheet always balance?
Because every transaction has two sides, which is double-entry accounting. Buy a 100 machine with cash and PP&E rises 100 while cash falls 100. Buy it with debt and PP&E rises 100 while debt rises 100. Every asset was funded by a liability or equity, so it cannot drift out of balance unless you erred.
How does retained earnings connect the statements?
Retained earnings is the hinge. Net income flows off the bottom of the income statement into retained earnings, which sits inside equity, minus any dividends paid. That single link is why a change in profitability eventually shows up on the balance sheet, and it is half of why the sheet stays balanced.
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