Lumpsum Calculator
A lumpsum investment is a single, one-time amount you invest and leave to grow, rather than spreading it across monthly instalments. Use this lumpsum calculator to estimate what a one-time mutual fund or other investment could grow to — enter the amount, an expected annual return and your time horizon to see the projected maturity value and how much of it is your money versus estimated returns.
- Invested
- ₹1,00,000
- Est. Returns
- ₹2,10,585
Total Value
₹3,10,585
- Invested32%
- Est. Returns68%
Formula
FV = P × (1 + r)ᵗ
- P
- Principal — the one-time amount you invest.
- r
- Expected annual rate of return ÷ 100.
- t
- Investment duration in years.
This uses annual compounding. The expected return is an assumption used for projection — actual market-linked returns are not guaranteed and will vary.
Worked example
Suppose you invest a lumpsum of ₹1,00,000 in a mutual fund expecting a 12% annual return, and stay invested for 10 years.
- Total Investment (P)
- ₹1,00,000
- Expected Return (p.a.)
- 12%
- Time Period
- 10 years
At an assumed 12% annual return, your ₹1,00,000 could grow to about ₹3,10,585 over 10 years — roughly ₹2,10,585 of estimated returns on top of your original investment.
Year-by-year growth
Based on the default Lumpsum Calculator values above. The final year matches the future value shown by the calculator — change the inputs to project your own plan.
- Total invested
- ₹1,00,000
- Est. returns
- ₹2,10,585
- Future value
- ₹3,10,585
- Value / invested
- 3.11×
Over 10 years, your ₹1,00,000 grows to about ₹3,10,585 — roughly 3.11× what you put in, thanks to compounding.
| Year | Invested | Est. returns | Value |
|---|---|---|---|
| 1 | ₹1,00,000 | ₹12,000 | ₹1.12 Lakh |
| 2 | ₹1,00,000 | ₹25,440 | ₹1.25 Lakh |
| 3 | ₹1,00,000 | ₹40,493 | ₹1.40 Lakh |
| 4 | ₹1,00,000 | ₹57,352 | ₹1.57 Lakh |
| 5 | ₹1,00,000 | ₹76,234 | ₹1.76 Lakh |
| 6 | ₹1,00,000 | ₹97,382 | ₹1.97 Lakh |
| 7 | ₹1,00,000 | ₹1,21,068 | ₹2.21 Lakh |
| 8 | ₹1,00,000 | ₹1,47,596 | ₹2.48 Lakh |
| 9 | ₹1,00,000 | ₹1,77,308 | ₹2.77 Lakh |
| 10 | ₹1,00,000 | ₹2,10,585 | ₹3.11 Lakh |
How the lumpsum calculator works
Adjust the total investment, expected return and time period sliders to see your projected maturity value and a breakdown of invested amount versus estimated returns, updated in real time. Because the full amount compounds from the start, the returns portion grows quickly over longer horizons — the chart shows how the balance tilts from contribution to growth over time.
Lumpsum versus SIP
A lumpsum invests everything at once, so it benefits fully when markets rise but carries more short-term timing risk. A SIP spreads investment across months, averaging your cost and easing the impact of volatility. They aren’t mutually exclusive — a common approach is to invest existing savings as a lumpsum while continuing a monthly SIP from income. Try both with our SIP calculator.
Tips for lumpsum investing
- Match the horizon to the asset — give equity investments time to ride out volatility.
- Consider staggering a very large amount over a few tranches to reduce timing risk.
- Stay invested — withdrawing early can cut short the compounding that does the heavy lifting.
- Revisit your assumed return periodically so your plan stays realistic.
Frequently asked questions
What is a lumpsum investment?
A lumpsum investment is a one-time deposit of a larger amount into an investment such as a mutual fund, as opposed to a SIP where you invest a fixed sum every month. The entire amount starts compounding from day one.
How is lumpsum maturity value calculated?
Lumpsum maturity uses the compound-growth formula FV = P × (1 + r)ᵗ, where P is the amount invested, r is the expected annual return and t is the number of years. This calculator computes it instantly as you adjust the inputs.
Should I invest a lumpsum or start a SIP?
It depends. A lumpsum puts your full amount to work immediately, which can help when markets rise, but it also exposes the whole sum to short-term dips. A SIP spreads the risk over time through rupee-cost averaging. Many investors use a lumpsum for money they already have and a SIP for regular income. Compare both using our SIP calculator.
Are lumpsum returns guaranteed?
No. For market-linked investments like mutual funds, returns vary and are not guaranteed. The expected return you enter is an assumption for projection only — actual results depend on market performance over your holding period.
Does a longer horizon help a lumpsum investment?
Yes. Because of compounding, the same lumpsum grows substantially more over a longer period — and a longer horizon also gives market-linked investments more time to recover from short-term volatility.