What Is Compound Interest
The Magic of Money Growing on Its Own 
“Compound interest is the eighth wonder of the world. He who understands it, earns it; he who doesn’t, pays it.”
— Ersan Karavelioğlu (inspired by Einstein) 18.04.1983
Introduction: More Than Just Interest — It’s Financial Gravity
Unlike simple interest, which is calculated only on the initial principal, compound interest earns interest on interest.
How Does Compound Interest Work
Step-by-Step Breakdown
| The initial amount of money invested or borrowed. | |
| The annual rate at which your investment grows. | |
| How long the money is invested or borrowed. | |
| How often interest is added (annually, monthly, daily). |
Compound Interest Formula:
A=P×(1+rn)ntA = P \times \left(1 + \frac{r}{n}\right)^{nt}A=P×(1+nr)ntWhere:
- A = Final amount
- P = Principal
- r = Annual interest rate (decimal)
- n = Number of times interest is compounded per year
- t = Time in years
Example:
A=1000×(1+0.0512)12×10≈$1,647A = 1000 \times \left(1 + \frac{0.05}{12}\right)^{12 \times 10} \approx \$1,647A=1000×(1+120.05)12×10≈$1,647Invest $1,000 at 5% annual interest compounded monthly for 10 years:
Why Is Compound Interest So Powerful
Final Words: Compound Interest Is the Quiet Superpower
Understanding compound interest is like unlocking a cheat code to the financial game.
It rewards patience, consistency, and smart decision-making.
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