§ 3302 Money Breach Damages Calculation

• •If someone promises to pay you money and doesn't, they owe you that money plus extra (interest).
• •The extra money (interest) is like a fee for making you wait.
• •This rule is about money promises only, not other types of promises.

You lend your friend $100, and they agree to pay you back in a month. A year later, they still haven’t paid you.

Your friend now owes you the $100 plus extra money (interest) for making you wait so long.