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Lumpsum Investment Calculator
See what a single one-time investment could grow into. Enter the amount, an expected annual return and a time horizon, then press Calculate to see the maturity value and returns.
Written by TopicDrill Editorial Team·Updated June 2026
Value over time
Value Invested
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How the lumpsum calculator works
A lumpsum grows by compounding: each year the return is earned not just on your original money but on the gains from earlier years too. The calculator applies your expected annual rate to the investment year after year, so the value climbs along a curve that gets steeper the longer you stay invested.
The chart plots the rising value against a flat dashed line marking your original investment. The widening gap between the two is pure compounding at work, and it tends to dwarf the starting amount once the horizon stretches past a decade.
A quick example
Invest ₹1,00,000 once and let it grow at 12 percent a year for 10 years. The maturity value works out to about ₹3,10,585, of which ₹1,00,000 is your own money and roughly ₹2,10,585 is growth. The returns are more than double the amount you put in, without adding another rupee along the way.
Things to keep in mind
Real returns are never perfectly smooth, and a bad year early on can dent the final figure, so the result is a guide rather than a promise. For neutral guidance on investing and risk, see the SEBI investor resources. If you would rather invest a fixed amount every month, compare the outcome with our SIP calculator.
Frequently asked questions
What is a lumpsum investment?
A lumpsum investment is a single one-time amount put into an asset such as a mutual fund or fixed deposit, rather than spread out in regular instalments. It then compounds at the rate the asset earns, so the full sum is working for you from day one.
How is the lumpsum maturity value calculated?
The calculator uses the compound growth formula: maturity value equals the investment times one plus the annual rate, all raised to the power of the number of years. So an investment growing at 12 percent for 10 years is multiplied by one point one two to the power of ten.
How does lumpsum differ from a SIP?
A lumpsum puts the whole amount in at once, so it benefits from the full investment period but is exposed to whatever the market does right after you invest. A systematic investment plan spreads money across months, which averages the entry price but keeps part of your capital uninvested for longer.
Is the expected return guaranteed?
No. The annual return you enter is an assumption, and real market returns rise and fall year to year. Treat the maturity value as a projection for planning, and revisit it with a more conservative rate if you want a cautious estimate.
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