Compound Interest
Compound interest means you earn interest on your principal and also on the interest already earned.
Start the lessonIntroduction
Money starts making money on itself
With simple interest, you earn returns only on the original amount. With compound interest, you earn returns on the original amount and on the interest that has already been added.
This is why compounding is so powerful. A small amount, invested consistently and left alone for years, can grow much more than people expect.
Why it matters
Time is the real advantage
Long-term growth
The longer your money stays invested, the more powerful compounding becomes.
Early investing
Starting earlier gives your money more time to grow, even with smaller contributions.
Retirement planning
Compounding is a core reason disciplined investing matters for retirement goals.
Real wealth
Compounding can help your money outpace inflation and maintain purchasing power.
₹ example
How compounding works
Suppose you invest ₹1,00,000 at 8% annual growth for 10 years.
Principal
₹1,00,000
Your initial invested amount.
Future value
₹2,15,892
Value after 10 years with compounding.
What this shows
Your money grows from ₹1,00,000 to ₹2,15,892 after 10 years.
The extra ₹1,15,892 is the effect of compounding over time.
Common mistakes
What beginners often get wrong
- • Starting too late and giving compounding too little time to work.
- • Chasing short-term gains instead of allowing long-term compounding to build wealth.
- • Forgetting that inflation reduces the real value of returns.
- • Thinking bigger returns are only possible with huge initial investments.
Key points
What to remember
- Compound interest earns returns on both principal and accumulated interest.
- Longer time horizons make compounding much more powerful.
- Starting early can matter more than investing a large amount at once.
- Reinvesting returns helps wealth grow faster.
- Inflation should be compared against actual returns.
- Consistent investing plus patience can create strong long-term results.
This lesson is educational and not financial advice. Compounding depends on the investment return, time period, and consistency.
Quiz