A lumpsum investment is a single, one-time amount put into a mutual fund, stock or other instrument, left to compound over time, as opposed to a SIP where you invest smaller amounts every month. Lumpsum investing suits money you already have on hand — a bonus, maturity proceeds, or savings you don’t need in the near term.
This lumpsum calculator uses annual compounding to project how your one-time investment could grow. Enter the amount, an expected annual return, and the number of years to see the estimated maturity value.
Lumpsum Investment Calculator
See how a one-time investment can grow over time.
Assumes annual compounding at a constant rate. Actual mutual fund and equity returns fluctuate year to year.
How the lumpsum calculation works
The formula used is FV = P × (1 + r)^n, where P is your invested amount, r is the expected annual rate of return (as a decimal) and n is the number of years. Because growth compounds annually, longer holding periods and higher assumed returns both increase the final value disproportionately — this is the core idea behind starting to invest early.
Lumpsum vs SIP
A lumpsum investment puts your entire capital to work from day one, so if markets rise steadily afterward, it can outperform a SIP of the same total amount. The trade-off is timing risk: investing a large sum right before a market fall means the entire amount is exposed to that drop, whereas a SIP would have deployed it gradually. Many investors combine both — a lumpsum for money already saved, and a SIP for ongoing monthly surplus.
Related reading
Frequently asked questions
Is lumpsum investing riskier than SIP?
It can be, mainly because of timing risk — the entire amount is invested at once rather than averaged over time. Market-linked instruments like equity mutual funds can be volatile in the short term regardless of the method used.
What return should I assume for a lumpsum equity investment?
A commonly used long-term planning assumption is 10-12% per annum for diversified equity funds, though actual returns depend on market conditions and are never guaranteed.
Does this calculator account for taxes on withdrawal?
No, the projected value is pre-tax. Capital gains tax will apply when you redeem the investment; see our Capital Gains Tax Calculator to estimate that separately.