What is a Discount Rate? Stock Market Valuation 101?

A discount rate is like the price you pay to borrow money from a friend for something cool, imagine trading your toy car for a shiny new bike today, and promising to give them a bigger toy later.

When people buy stocks, they're not just buying pieces of companies, they're betting that those companies will grow and be worth more in the future. But since money is worth more now than later (because you can save or invest it), we use a discount rate to figure out how much a company's future earnings are worth today.

Think of it like this: If your friend says they’ll give you $10 in one year, but you could earn 5% interest on your savings, the real value of that $10 right now is less. You’d rather have a little less money today than wait for more later, especially if you can grow that small amount into something bigger.

So, when people look at a company’s future earnings and decide how much it's worth today, they use the discount rate to turn those big numbers from tomorrow into smaller, more realistic ones right now. That helps them know whether buying a stock is like trading your toy car for a bike, or maybe even a spaceship!