Investing a single amount, not a monthly stream
A lumpsum investment puts one amount to work on one day and leaves it there. There are no further instalments, so there is no rupee-cost averaging to smooth your entry price — the whole amount is exposed to whatever the market does next. In exchange, every rupee gets the maximum possible time in the market, which over long horizons is usually the stronger force.
This lumpsum calculator compounds your amount annually at the rate you assume and shows the invested amount, estimated returns and total value.
What a lumpsum grows to at 12%
| Amount invested | After 5 yrs | After 10 yrs | After 15 yrs | After 20 yrs |
|---|---|---|---|---|
| ₹1 Lakh | ₹1.76 Lakh | ₹3.11 Lakh | ₹5.47 Lakh | ₹9.65 Lakh |
| ₹5 Lakh | ₹8.81 Lakh | ₹15.53 Lakh | ₹27.37 Lakh | ₹48.23 Lakh |
| ₹10 Lakh | ₹17.62 Lakh | ₹31.06 Lakh | ₹54.74 Lakh | ₹96.46 Lakh |
| ₹25 Lakh | ₹44.06 Lakh | ₹77.65 Lakh | ₹1.37 Crore | ₹2.41 Crore |
The lumpsum formula
FV = P × (1 + r)t
P is the amount invested, r the annual rate as a decimal and t the number of years. This is plain annual compounding, which is why a lumpsum calculator and a compound interest calculator return the same figure for the same inputs.
Lumpsum or SIP?
If you already hold the money, deploying it as a lumpsum gives it the longest possible runway and, on historical averages, tends to finish ahead. If the amount is large relative to your net worth and a bad first year would shake you out of the investment, staggering it over several months through a SIP buys behavioural safety at some expected cost. Both are defensible; the wrong choice is the one you abandon halfway.
Whichever you pick, the total value it produces flows straight into the SWP calculator below, so you can plan the withdrawal phase in the same window.
Disclaimer: Every figure on this page is an illustration produced by a compounding formula, not a forecast and not investment advice. Mutual fund returns are market-linked and are neither guaranteed nor uniform year to year. Verify your own plan with a SEBI-registered investment adviser before acting on it.