Credit and Leverage

Leverage is the use of borrowed money to increase the size of a bet. When a company funds itself partly with debt instead of entirely with its owners' money, it controls more assets than its owners actually put in — and that magnifies the return on what the owners *did* put in. This magnified return is the whole reason debt is attractive.

Here is the mechanism in one line: borrowing lets a fixed pool of owner money (equity) control a larger pool of assets, so whatever those assets earn gets spread over a smaller equity base. If a business earns more on its assets than its debt costs in interest, the leftover flows entirely to the owners — and because there are fewer owner dollars to share it, the return *per owner dollar* goes up. That is leverage working in your favor.

But here is the part people rush past: leverage is perfectly symmetric. The exact same math that magnifies gains in a good year magnifies losses in a bad year. Debt doesn't know which way the wind is blowing. The interest bill is owed whether the business made money or lost it, so when assets fall in value, the loss lands on a shrunken equity base and the percentage damage is amplified just as violently as the gains were.

Now here's where it gets harder in practice — because the upside of leverage shows up first and feels like skill, while the downside shows up later and feels like bad luck.