1. What is Compound Interest?

Compound interest is the interest calculated on the initial principal and also on the accumulated interest of previous periods. It's often referred to as "interest on interest" and can cause wealth to grow exponentially over time.

2. How Does the Calculator Work?

The calculator uses the compound interest formula:

Where:

• \( A \) — Final amount including interest
• \( P \) — Principal investment amount
• \( r \) — Annual interest rate (in decimal)
• \( n \) — Number of times interest is compounded per year
• \( t \) — Time the money is invested for in years

Explanation: The formula calculates how much an investment will grow over time when interest is compounded at regular intervals.

3. Importance of Compound Interest

Details: Compound interest is a powerful financial concept that allows investments to grow faster over time. It's the foundation of long-term wealth building and retirement planning.

4. Using the Calculator

Tips: Enter the principal amount, annual interest rate, select compounding frequency, and time period. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between simple and compound interest?
A: Simple interest is calculated only on the principal amount, while compound interest is calculated on both the principal and accumulated interest.

Q2: How does compounding frequency affect returns?
A: More frequent compounding (e.g., monthly vs. annually) results in higher returns due to interest being calculated more often.

Q3: What is the Rule of 72?
A: The Rule of 72 is a simple way to estimate how long an investment will take to double: Divide 72 by the annual interest rate.

Q4: Can compound interest work against me?
A: Yes, when borrowing money, compound interest can cause debt to grow rapidly if not managed properly.

Q5: How can I maximize compound interest?
A: Start investing early, contribute regularly, and choose investments with higher compounding frequencies.