I just realized how many people don’t know what CAGR is and how it can help them better understand their investments. **Složená roční míra růstu** — that’s actually one of the most useful tools you have at your disposal.

Unlike a simple profit calculation, CAGR shows you how your investment would grow if it increased at the same rate every year. It takes into account the compounding effect—that is, your profit generates additional profit. That’s the key.

To make it clear—CAGR isn’t your actual return. It’s more of a representative number that helps you see the long-term trend. If I take an investment that dropped by 20 percent in one year and then grew for two years, CAGR will show me the average annual growth over the whole period.

The formula is actually simple: I take the ending value, divide it by the starting value, raise it to the power of one divided by the number of years, and subtract one. Then I multiply by 100 and I get a percentage.

Practically: you have an investment worth 1000 dollars, and after three years it’s worth 1728 dollars. CAGR = (1728/1000)^(1/3) - 1 = 0,2 or 20 percent per year.

Why does it seem important to me? Because it lets you compare different investments on the same basis. One investment grew chaotically, the other steadily—CAGR will show you which one was actually better. That’s invaluable for long-term planning.

If you want to truly understand your investments, you should understand CAGR. It’s not just a number—it’s a tool for making better decisions.