1. Enter Investment Details
2. Your Result
3. Growth Chart
4. Year-by-Year Growth
| Year | Invested | Interest | Value |
|---|
5. How Compound Interest Works
Compound growth allows accumulated interest to become part of the balance used for future calculations. Regular contributions can also increase the projected value over time.
6. Simple vs Compound Interest
Simple interest generally uses the original principal for interest calculations. Compound interest allows accumulated interest to contribute to the balance used for future calculations.
📈 Compound Interest Calculator — How Does It Work?
Compound interest is the process where accumulated interest becomes part of the balance used for future interest calculations. Over time, this can help savings and investments grow faster than simple interest when the rate and compounding conditions are the same.
How compound interest works
With compound growth, interest is calculated on the existing balance. As interest is added to the balance, future calculations can include both the original amount and previously accumulated interest.
What affects compound growth?
- Initial investment: A larger starting amount can increase the projected final value.
- Regular contributions: Adding money regularly can increase the amount available for future growth.
- Interest or return rate: A higher assumed rate increases the mathematical projection, but actual returns may differ.
- Time period: A longer investment period gives compounding more time to work.
- Compounding frequency: The frequency at which interest is added can affect the mathematical outcome.
Example
Suppose you start with ₹1,00,000, add ₹5,000 every month and assume an annual return rate of 8% for 10 years. The calculator can show the estimated total amount invested, estimated interest earned and projected final value.
Simple interest vs compound interest
Simple interest generally calculates interest using the original principal. Compound interest allows accumulated interest to become part of the balance used for future calculations. The difference can become more noticeable over longer periods.
Why time matters
Compounding works over time, so starting earlier can give your money more time to grow. Regular investing and maintaining a long-term approach can also help build the amount available for compounding.
Important before using the calculator
This calculator uses assumptions to create a mathematical projection. Actual investment returns can vary because of market performance, fees, taxes, product terms and other factors. A projected return should not be treated as a guaranteed return.
Important: Smart Money Compound Interest Calculator is an educational planning tool. Actual interest, investment returns, fees, taxes and final values depend on the product and applicable terms. Market-linked returns are not guaranteed.