Lumpsum Calculator
Find out what a one-time investment will be worth at a given rate of return, with a year-by-year growth breakdown.
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How this lumpsum calculator works
Enter the amount you want to invest once, an expected annual return, and your holding period. The calculator compounds the amount annually: FV = P × (1 + r)t.
The rule of 72
A handy mental shortcut: divide 72 by your expected return to estimate how many years your money takes to double. At 12%, money doubles roughly every 6 years — so ₹1 lakh becomes about ₹2 lakh in 6 years, ₹4 lakh in 12, and ₹8 lakh in 18.
Deploying a lumpsum sensibly
- Long horizon, strong nerves: invest at once — time in the market usually beats waiting.
- Worried about a crash right after investing? Use a Systematic Transfer Plan (STP): park the corpus in a liquid fund and move it into equity over 6–12 months.
- Short horizon (under 3 years): equity is risky; consider debt funds or fixed deposits instead.
Frequently Asked Questions
What is a lumpsum investment?
A lumpsum investment is a one-time investment of a larger amount, as opposed to spreading it out through a SIP. It suits investors who already have a corpus available — from a bonus, sale proceeds, or maturity of another investment.
Lumpsum or SIP — which is better?
Mathematically, lumpsum wins more often in steadily rising markets because your full amount compounds from day one. But SIPs reduce the risk of investing everything at a market peak and suit monthly savers. Many investors park a lumpsum in a liquid fund and transfer it gradually via STP.
How does this calculator compute returns?
It uses annual compounding: Future Value = P × (1 + r)^t, where P is your investment, r the expected annual return, and t the number of years.
What return assumption is realistic?
For equity funds held 7+ years, 10–12% a year is a common planning assumption; hybrid funds 8–10%; debt funds 6–7.5%. None of these are guaranteed — actual returns vary by fund and period.
How are lumpsum mutual fund gains taxed?
For equity funds, long-term gains (held over 12 months) above ₹1.25 lakh a year are taxed at 12.5%; short-term gains at 20%. Debt fund gains are taxed at your slab rate. Verify current rules before investing.
Disclaimer: This calculator produces illustrative estimates only. Actual returns vary and, unless stated otherwise, results exclude expense ratios, exit loads, transaction costs, and taxes. Assumed rates are inputs, not forecasts or assured returns. This is educational content, not personalized investment advice — see our full disclaimer.