Lumpsum Calculator
Total Investment
Expected Return Rate (Per annum)
Time Period (in Years)
Investment Amount
₹1,00,000
Estimated Return
₹76,234
Total Value
₹1,76,234
Investment Amount
Estimated Return
Use this free lumpsum calculator to estimate what a one-time investment could grow to. Enter the amount you want to invest, the annual return you expect and how many years you plan to stay invested. The calculator shows the amount you invest, your estimated returns and the estimated value at the end of the period.
What is a lumpsum investment?
A lumpsum investment is a single, one-time investment of a large amount, for example a bonus, the proceeds of a sale or savings you have built up, instead of investing a little every month. Because the whole amount is invested from the first day, all of it has the full period to grow.
How does the lumpsum calculator work?
The calculator uses the compound interest formula, with returns compounded once a year:
A = P × (1 + r ÷ 100)t
Here A is the estimated value at the end, P is the amount you invest, r is the expected annual return in percent and t is the number of years. Your estimated returns are A minus P. The figure in the middle of the chart shows how many times your money grows: the estimated value divided by the amount invested.
Lumpsum calculation example
Say you invest ₹1,00,000 once and expect a 12% annual return for 10 years. Each year the amount grows by 12%, so after 10 years it is worth about ₹3,10,585: estimated returns of ₹2,10,585 on your ₹1,00,000. Your money grows about 3.11 times, and returns make up two thirds of the final value.
How to use this lumpsum calculator
1. Total investment: drag the slider or type the exact amount you plan to invest.
2. Expected return rate: enter the yearly return you expect. Returns are never guaranteed, so try a cautious and a hopeful rate to see a range of outcomes.
3. Time period: choose how many years you plan to stay invested. The results and the chart update instantly.
Why time matters more than timing
Compounding does most of its work in the later years. The same ₹1,00,000 at 12% is worth about ₹1,76,234 after 5 years but about ₹3,10,585 after 10, and ₹5,00,000 left for 15 years grows to an estimated ₹27,36,783. Staying invested longer usually matters more than finding the perfect day to invest.
Lumpsum or SIP?
A lumpsum suits you when you already have a large amount ready and can stay invested through ups and downs. Its risk is timing: if markets fall soon after you invest, the whole amount is affected. Investing a fixed amount every month spreads that risk over time. To see how regular monthly investing would work out, try our SIP calculator.
What this calculator doesn't include
The results are estimates, not a promise. Market returns change from year to year and can be negative. The calculator assumes the same return every year and doesn't deduct fees or tax on capital gains, and it doesn't adjust for inflation. Use it to plan and compare, not to predict an exact amount.
Lumpsum calculator FAQs
How accurate is this lumpsum calculator?
It uses the standard compound interest formula, so the maths is exact for the numbers you enter. Real returns change from year to year, so treat the result as an estimate rather than a guaranteed amount.
What expected return rate should I enter?
There is no single right number. Try a cautious rate and a hopeful one side by side to see a range of outcomes. Past returns of an investment do not guarantee its future returns.
Is a lumpsum better than a SIP?
Neither is better for everyone. A lumpsum compounds for longer because all of it is invested from day one, but it takes the full impact if markets fall soon after. A SIP spreads your entry over many months.
Does the lumpsum calculator include tax?
No. The results are before tax, fees and inflation. Gains are taxed when you sell, depending on what you invested in and how long you held it.
How often is the return compounded?
Once a year. The calculator grows your investment by the expected annual return for each year you stay invested.
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