Lumpsum Calculator — One-Time Investment Returns
Find the future value of a one-time investment with annual compounding. A ₹1 lakh lumpsum at 12% grows to ₹3,10,585 in 10 years — more than 3× your money.
How lumpsum growth is calculated
A one-time investment compounds on itself: each year's growth is earned on both the principal and all previous gains.
P = investment r = annual return ÷ 100 t = years
₹1 lakh at 12% — growth over time
| Duration | Future value at 12% | Gain |
|---|---|---|
| 5 years | ₹1,76,234 | ₹76,234 |
| 10 years | ₹3,10,585 | ₹2,10,585 |
| 15 years | ₹5,47,357 | ₹4,47,357 |
| 20 years | ₹9,64,629 | ₹8,64,629 |
₹1 lakh over 10 years — return sensitivity
| Annual return | Future value |
|---|---|
| 8% | ₹2,15,892 |
| 10% | ₹2,59,374 |
| 12% | ₹3,10,585 |
| 15% | ₹4,04,556 |
A few percentage points compound into a huge difference: over 10 years the gap between 8% and 15% on the same ₹1 lakh is nearly ₹1.9 lakh.
Frequently asked questions
How is lumpsum future value calculated?
FV = P × (1 + r)^t, where P is the one-time investment, r is the annual return (as a decimal) and t is the number of years. A ₹1 lakh investment at 12% for 10 years grows to ₹3,10,585.
How much does 1 lakh grow in 10 years?
It depends on the return: at 8% a ₹1 lakh lumpsum becomes ₹2,15,892, at 10% it becomes ₹2,59,374, at 12% it becomes ₹3,10,585 and at 15% it becomes ₹4,04,556 over 10 years.
Lumpsum or SIP — which is better?
A lumpsum puts your full amount to work immediately, which wins when markets rise steadily. A SIP spreads purchases across months, reducing timing risk. Many investors park a lumpsum in a liquid fund and transfer it gradually via STP.
Is the FinCalix lumpsum calculator free?
Yes. FinCalix is a 100% free Android app with 45+ Indian financial calculators including lumpsum, SIP, STP and SWP with growth charts and PDF/Excel export. It works fully offline with no login and no ads.
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