Lumpsum Calculator
Calculate the future value of a one-time lumpsum mutual fund or investment. See maturity value, returns and growth over time with this free lumpsum calculator.
Formula last reviewed 4 August 2026 · How we verify our calculators
Total value
- Invested amount
- ₹1,00,000
- Estimated returns
- ₹2,10,585
Updates live as you type
Frequently asked questions
A lumpsum investment is a single, one-time amount put into a fund or instrument, rather than spread out monthly like a SIP. It is ideal when you have a windfall or surplus to deploy.
A lumpsum can outperform when invested at a market low and held long, but it carries timing risk. SIPs average your cost over time. Many investors use both depending on cash flow.
It uses the compound interest formula A = P × (1 + r)^n. This calculator compounds annually by default on your expected return.
No. It assumes a steady annual return for projection. Actual fund returns vary year to year, so treat the figure as an estimate.
You just got a bonus, a maturity payout, or an inheritance. Now what?
That's the moment this calculator is actually built for — not a hypothetical monthly habit, but a single sum sitting in your account that needs a decision. Put ₹1,00,000 to work for 10 years at a 12% expected return and it becomes ₹3,10,585 — your money roughly triples, with ₹2,10,585 of that final figure being pure return rather than the principal you started with.
A lumpsum compounds differently from a monthly SIP: the whole amount is exposed to the market from day one rather than entering gradually, so its growth curve is smoother in the maths — Maturity = P × (1 + r)ⁿ, principal times (1 + rate) to the power of years — but it's also fully exposed to whatever the market happens to be doing on the exact day you invest, with no averaging effect to soften a bad entry point.
Time does more work than a bigger cheque
Push the same ₹1,00,000 out to 20 years instead of 10, and the corpus grows by far more than doubling the amount would over the original 10-year window — compounding needs duration more than it needs size, which is the same principle that makes a modest SIP started early beat a large lumpsum started late. If you're deciding between investing a windfall now versus waiting until you have "more to invest," the honest answer is usually that the waiting costs you more in lost compounding time than the extra amount gains you.
The real risk isn't the maths — it's the timing
A lumpsum can outperform a SIP handily when it lands near a market low and stays invested for the long haul, but putting a large sum in right before a downturn can dent returns for years with nothing to average it out. A common middle path — sometimes called a lumpsum-to-SIP transfer — splits the difference: invest part of the windfall immediately for long-term goals, and stagger the rest into the market over the next six to twelve months, reducing the odds that the entire sum lands at a single bad moment. Whatever you choose, this projection assumes a steady annual rate that real markets never actually deliver in a straight line — treat it as a planning number for a home down payment, a child's education, or retirement, not a guarantee.