What this estimate uses
Investment amount, Expected return (p.a.), Expected inflation (p.a.), Time period.
Investments calculator
What could your investment grow to?
Estimate the future value of a one-time investment.
Your estimate
Live result
Future value
—How it works
A useful estimate, with the assumptions out in the open.
Returns compound annually and remain constant through the selected period. Today’s-money value discounts the future amount by the entered annual inflation rate.
This result is an educational estimate. Rates, taxes, fees, product rules, and market returns can change.
India-focused guide
What will my future lumpsum investment be worth in today’s money?
Enter your own values above to project a one-time investment’s future value and compare it with its inflation-adjusted purchasing power today. The live result separates the most important totals so you can compare scenarios before making a decision.
Important assumption
Returns compound annually and remain constant through the selected period. Today’s-money value discounts the future amount by the entered annual inflation rate.
Created and maintained byAll Tool Central
Formula and content reviewed17 August 2026
See how estimates are builtCalculation methodology
Detailed guide
Understand the result before using it.
The lumpsum calculator projects one investment over a chosen period and separates the original amount from estimated growth. Its inflation-adjusted result helps compare a future number with the purchasing power of money today.
How lumpsum compounding is modelled
The estimate applies the selected annual return to the full investment once per year. There are no later contributions or withdrawals. Because each year’s gain is included in the next year’s base, the path is exponential rather than linear.
Actual market-linked investments fluctuate and may finish above or below a smooth projection. The expected return is therefore a scenario input, not a quoted product rate.
FormulaFuture value = initial investment × (1 + annual return)^years
Example: ₹1 lakh invested for 10 years
The same starting amount can produce very different estimates when the return assumption changes. The today’s-value column discounts the future result using a constant 6% annual inflation rate.
| Expected return | Estimated future value | Estimated gain | Today’s value at 6% inflation |
|---|---|---|---|
| 8% | ₹2.16 lakh | ₹1.16 lakh | ₹1.21 lakh |
| 10% | ₹2.59 lakh | ₹1.59 lakh | ₹1.45 lakh |
| 12% | ₹3.11 lakh | ₹2.11 lakh | ₹1.73 lakh |
Lumpsum versus SIP is a cash-flow question
A lumpsum calculation assumes all the money is available and invested on day one. An SIP spreads contributions across time, so later instalments have fewer months to compound. Comparing equal headline amounts without matching the timing of cash flows can be misleading.
Use the lumpsum calculator when modelling money already available. Use the SIP calculator when the money will be contributed from future income.
Common questions
Frequently asked questions
Does this calculator predict mutual-fund returns?
No. It shows a smooth mathematical scenario using the return you enter. Actual returns vary and can be negative.
Why does compounding look slow at first?
Early gains are earned on a smaller balance. Later gains are applied to the original investment plus previously accumulated growth.
Should inflation be subtracted from the return?
For clarity, this calculator first estimates the nominal future value and then separately discounts that result by inflation to show today’s purchasing power.
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