Lumpsum Investment Calculator
Estimate the future value of a one-time lumpsum investment with compound growth, year by year.
How a lumpsum investment grows
A lumpsum is a single, one-time investment that compounds over the years. Because the entire amount is invested from day one, it has the maximum possible time in the market — and compounding does the rest.
The formula
Future value = P × (1 + r)t, where P = invested amount, r = annual return, t = years. Small differences in rate or time produce large differences in the final corpus.
Worked example
Investing ₹5,00,000 at an assumed 12% for 10 years grows to about ₹15.5 lakh — your money roughly triples, with the gains coming entirely from compounding. Extend the horizon and the effect grows dramatically.
Lumpsum vs SIP
If you have a windfall — a bonus, maturity proceeds, or sale of an asset — a lumpsum puts it to work immediately. If you are investing from monthly income instead, a SIP suits better and smooths out market timing. Many investors use both.
How to use this calculator
Enter the investment amount, expected return, and time horizon. The result shows your maturity value and the estimated returns earned on top of your principal.
Frequently asked questions
How is lumpsum maturity calculated?
Future value = P × (1 + r)^t, where P is the one-time investment, r is the annual return rate, and t is the number of years. It is straightforward annual compounding.
What is the difference between lumpsum and SIP?
A lumpsum invests a single amount at once; a SIP spreads investment across monthly instalments. Lumpsum benefits from a longer time in the market but carries timing risk. SIPs average out the entry price.
Are lumpsum returns guaranteed?
No. If invested in market-linked mutual funds, returns vary and can be negative in the short term. The expected-return input is a planning assumption, not a guarantee.
When is a lumpsum better than a SIP?
A lumpsum tends to outperform when markets rise steadily after you invest, because the full amount compounds from day one. In volatile or falling markets, a SIP can reduce timing risk.
What return rate should I assume?
Use a conservative long-term figure — historically around 10–12% for diversified equity. The calculator defaults to 12% as an illustration; lower it for debt or balanced funds.
Are lumpsum gains taxable?
Yes. Capital gains tax applies when you redeem, with the rate depending on the asset and holding period. Consult a tax adviser for specifics.
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Disclaimer: These calculators provide estimates for general information only and are not financial, tax, or investment advice. Figures use FY 2025-26 (AY 2026-27) rules and standard assumptions; your actual numbers may differ. Verify with a qualified professional before acting.