How to Use the Lumpsum Calculator
Using the calculator takes just a minute:
Enter the investment amount – How much money is going into the investment
Choose the expected return – What percentage return is expected per year
Pick the time period – How many years the money will stay invested
See the results – The calculator shows three things: the amount invested, the returns earned, and the total value
The sliders can be moved around to try different numbers. Everything updates right away, so it's easy to compare options.
What is a Lumpsum Investment?
Lumpsum investment means putting a large sum of money into an investment all at once, instead of breaking it up into smaller payments.
This makes sense when someone has a chunk of money available. The money grows through compounding. Returns earned in one year start earning their own returns the next year. The longer the money stays invested, the bigger this effect becomes.
Lumpsum Calculator Formula Explained
The calculator uses a standard compound interest formula:
A = P (1 + r/n)^(nt)
Here's what each part means:
- A = Final amount after the investment period
- P = Amount invested at the start
- r = Expected annual return (written as a decimal)
- t = Number of years
- n = How often returns compound each year
Most mutual fund calculations assume returns compound once a year, so the formula becomes simpler:
A = P (1 + r)^t
This formula shows how money grows over time. Each year, returns are earned not just on the original amount, but also on the returns from earlier years. That's compounding.
Example Calculation (Real-World Scenario)
Here's how it works with actual numbers.
Example 1:
Someone gets a ₹5 lakh bonus and wants to invest it for 10 years in a fund that typically gives 12% returns per year.
Details:
- Investment: ₹5,00,000
- Expected return: 12% per year
- Time: 10 years
The calculation:
A = 5,00,000 × (1.12)^10
A = 5,00,000 × 3.106
A = ₹15,52,924
What this shows:
- Money invested: ₹5,00,000
- Returns earned: ₹10,52,924
- Final amount: ₹15,52,924
The ₹5 lakh grows to about ₹15.5 lakh in 10 years. The returns alone are over ₹10 lakh.
Example 2:
Investing ₹15 lakh for 5 years at 12% returns:
A = 15,00,000 × (1.12)^5
A = ₹26,43,513
The investment grows to ₹26.4 lakh. Returns earned are ₹11.4 lakh over 5 years.
Note: Please note that mutual fund returns are market-linked and based on CAGR assumptions.