Question 1

What is compound interest?

Accepted Answer

Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. Unlike simple interest (calculated only on principal), compound interest grows exponentially over time, making it a powerful tool for wealth creation.

Question 2

What is the compound interest formula?

Accepted Answer

The compound interest formula is: A = P × (1 + r/n)^(n×t), where A is the final amount, P is the principal, r is the annual interest rate (as decimal), n is the number of times interest compounds per year, and t is the time in years.

Question 3

What is the difference between daily, monthly, and yearly compounding?

Accepted Answer

More frequent compounding produces slightly higher returns. Daily compounding (n=365) yields more than monthly (n=12), which yields more than yearly (n=1). However, the difference is marginal for moderate interest rates. For example, Rs. 1 lakh at 10% for 5 years gives Rs. 1,61,051 (yearly) vs Rs. 1,64,701 (daily).

Question 4

How does compound interest help in long-term investing?

Accepted Answer

Compound interest creates exponential growth over time — known as the 'snowball effect'. For example, Rs. 1 lakh at 12% grows to Rs. 3.1 lakh in 10 years, Rs. 9.6 lakh in 20 years, and Rs. 30 lakh in 30 years. Starting early and staying invested maximizes the compounding benefit.

Compound Interest Calculator

Compound Interest Calculator