> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt
> Use this file to discover all available pages before exploring further.

# Assets, liabilities & equity

> The accounting equation explained with everyday analogies — what you own, what you owe, and what's actually yours. Why Assets = Liabilities + Equity always balances.

Every business — and honestly, every person — can describe its financial life with three words: **assets**, **liabilities**, and **equity**. Get these three, and the single most important idea in accounting falls into place.

Let's use a house.

## The three words, in plain terms

***

* **Assets** — everything you **own** that has value. Your house, your car, the cash in your account, the money customers still owe you.
* **Liabilities** — everything you **owe** to someone else. Your mortgage, your car loan, an unpaid bill.
* **Equity** — what's **actually yours** once the debts are paid off. It's the leftover.

Say your house is worth \$300,000 (an asset). You still owe \$200,000 on the mortgage (a liability). The part that's truly yours — your **equity** — is \$100,000.

That's the whole idea — **what you own, minus what you owe, is what's yours:**

$$
Assets - Liabilities = Equity
$$

| Term          | Plain meaning            | House example              |
| ------------- | ------------------------ | -------------------------- |
| **Asset**     | What you own             | The \$300,000 house        |
| **Liability** | What you owe             | The \$200,000 mortgage     |
| **Equity**    | What's left over for you | The \$100,000 that's yours |

## The equation that ties them together

***

You just saw the equation one way. Move `Liabilities` to the other side and you get the **same idea** flipped around — the form accountants actually use, called the **accounting equation**:

$$
\underset{\$300{,}000\ \text{house}}{\text{Assets}} \;=\; \underset{\$200{,}000\ \text{mortgage}}{\text{Liabilities}} \;+\; \underset{\$100{,}000\ \text{yours}}{\text{Equity}}
$$

It's the same sentence written two ways. The first asks *what's truly mine?* The second flips it to show *how everything I own was funded* — nothing changes but the order.

Everything the business **owns** was paid for in one of two ways: with **money it borrowed** (liabilities) or with **money that's its own** (equity). So the total value of what you own always equals the sum of those two sources.

## Why it always balances

***

Here's the part people miss: the equation can **never** be out of balance, by design. If something changes on one side, something else has to change to keep it even.

* **You buy a \$20,000 car with a loan.** Assets go up by \$20,000 (the car). Liabilities go up by \$20,000 (the loan). Still balanced.
* **You pay off \$5,000 of that loan with cash.** Assets drop by \$5,000 (cash leaves). Liabilities drop by \$5,000 (debt shrinks). Still balanced.
* **The business earns \$10,000 in profit.** Assets go up by \$10,000 (cash). Equity goes up by \$10,000 (it's yours to keep). Still balanced.

Every real-world event touches the equation in a way that keeps both sides equal. That's not a coincidence — it's the rule that makes accounting trustworthy. If your books *don't* balance, you know immediately that something was recorded wrong.

## In short

***

* **Assets** are what you own, **liabilities** are what you owe, and **equity** is what's left over for you.
* The **accounting equation** — *Assets = Liabilities + Equity* — just says everything you own was funded either by debt or by your own stake.
* It **always balances**: every change on one side forces a matching change elsewhere. A broken balance is a sign of an error.

<Note>
  **Next up**

  You've got what a business owns, owes, and keeps. The other half of the picture is what it earns and spends — meet [Revenue, expenses & costs](/en/fundamentals/accounting/revenue-and-expenses), and how profit feeds back into equity.
</Note>