Calculators / Investments & growth
Investments & growth
Lumpsum Calculator India
See what a one-time investment grows to: put in the amount, the years and an assumed return, and get the maturity value and the gain. It works for a bonus, a maturity payout or any money you can leave alone. The real lesson it teaches is how much of the growth arrives in the last years.
₹1 lakh left alone at 12% becomes ₹3.1 lakh in 10 years, ₹9.65 lakh in 20, and about ₹30 lakh in 30. The last ten years add more than the first twenty.
Open the detailed calculator with sliders and the full breakdown
About the lumpsum calculator
A lumpsum calculator shows what one investment grows to if you leave it untouched. There is no monthly amount; the only things that matter are how much, how long, and the rate. Of those three, time does the most work, because compounding keeps adding growth on top of earlier growth.
| Years | At 10% a year | At 12% a year |
|---|---|---|
| 5 years | ₹1.61 lakh | ₹1.76 lakh |
| 10 years | ₹2.59 lakh | ₹3.11 lakh |
| 15 years | ₹4.18 lakh | ₹5.47 lakh |
| 20 years | ₹6.73 lakh | ₹9.65 lakh |
| 25 years | ₹10.8 lakh | ₹17 lakh |
| 30 years | ₹17.4 lakh | ₹30 lakh |
Yearly compounding, before tax, fund fees and inflation. At 12%, money roughly doubles every six years, so each extra six years doubles everything before it.
What does ₹1 lakh become in 10 years?
About ₹3,10,585 at an assumed 12% a year, so ₹2.1 lakh of the total is growth. That is before tax, fund fees and inflation, and it assumes you never touch the money. Enter your own amount, years and return above.
How is a lumpsum return calculated?
With the compound growth formula: final value = amount × (1 + r)n, where r is the yearly return and n is the number of years. This calculator compounds once a year. Be clear on what that means for equity: markets do not pay a fixed rate every year. They rise, fall and recover, and the calculator smooths that bumpy path into one steady yearly rate, the same way a CAGR does.
Why do other lumpsum calculators show a bigger number?
Many divide the yearly return by 12 and compound it every month. That effectively turns 12% into about 12.7% a year, because monthly compounding at 1% adds interest on interest twelve times. Same inputs, a different answer:
| Method | What it really assumes | Result |
|---|---|---|
| 12% compounded yearly (this calculator) | 12% a year | ₹3,10,585 |
| 1% compounded every month | 12.68% a year | ₹3,30,039 |
About ₹19,500 apart on the same inputs. When a fund or index is said to return 12% a year, that is a yearly (CAGR) figure, so yearly compounding is the honest way to project it.
Is 12% a realistic return?
It is a common long-run planning assumption for a diversified Indian equity fund, not a promise, and ten years can still end in a weak patch. For a margin of safety, plan on 10%: ₹1 lakh then becomes ₹2.59 lakh in 10 years instead of ₹3.11 lakh. Treat anything above that as a bonus. The 25-year record of the Nifty shows what long horizons have actually delivered.
What will it be worth after inflation?
Less than the headline. At 6% inflation, ₹3,10,585 in ten years buys about what ₹1,73,400 buys today. Your money still grew in real terms, but by about 73%, not 210%. The gap between the two is why the real return is the one to plan with.
Does it include fund fees and tax?
No, and both come out of your result. If 12% is what the market returns, a fund with a 1% expense ratio leaves you about 11%, which turns ₹3,10,585 into roughly ₹2,83,900 over ten years. On tax, as of FY 2026-27 for equity funds held more than 12 months, long-term capital gains above ₹1.25 lakh a year are taxed at 12.5%; sell within 12 months and gains are taxed at 20%. On the example above, the ₹2,10,585 gain would carry tax of about ₹10,700 if it were your only equity gain that year. Tax rules change, so check the current position before you sell.
How much should I invest as a lump sum?
Start from what the money is for, not from the amount you happen to have. A bonus meant for a home in five years should not sit in equity at all; money for a goal fifteen years away can. Keep your emergency fund whole first. The goal planner works backwards from a target and a date, which tells you how much of a lump sum a goal needs.
Invest it all now, or spread it out?
If the horizon is long, putting it all in now usually does better, simply because the money has more time invested. Waiting a year for a dip that never comes costs a year of growth: on ₹1 lakh held to year ten at 12%, investing a year late leaves you about ₹33,000 short. The honest exception is you: if a 20% fall right after investing would make you sell in panic, spread it over three to six months by parking it in a liquid fund and moving a fixed amount into equity each month, which funds call a systematic transfer plan (STP). A plan you can stick with beats a better plan you abandon.
How long should I stay invested?
As long as the goal allows, and at least five to seven years for equity. The table at the top shows why: at 12%, the tenth year adds about ₹33,000 to ₹1 lakh, while the thirtieth year alone adds over ₹3 lakh. Most of the reward sits at the end, which is exactly the part people give up when they sell early. See the long-run record.
Lumpsum or SIP?
Use the one that matches how the money arrives. A bonus or maturity payout that exists today is a lump sum; salary that arrives each month suits a SIP. The two work well together: invest the windfall once, and keep the monthly SIP running for the income.
What is the minimum lump sum I can invest?
It varies by fund, and many accept a few hundred to a few thousand rupees; the scheme's page states its minimum. There is no maximum. The amount matters less than leaving it alone once it is in.