Lumpsum calculator
Calculate the future value of a one-time mutual fund investment. Enter amount, expected return, and duration to see projected corpus and wealth gain.
What is a lumpsum investment?
A lumpsum investment is a one-time, bulk investment in a mutual fund or other instrument — as opposed to periodic investments like SIPs. Investors typically choose lumpsum when they have a windfall, bonus, inheritance, or idle savings they want to deploy at once.
The returns on a lumpsum follow simple compound interest: your entire amount earns returns from day one, and those returns earn returns in subsequent periods. At 12% annual returns, ₹5 lakh grows to ₹15.5 lakh in 10 years — more than tripling. Toggle "Adjust for inflation" to see how much of that growth is real purchasing power versus nominal value.
Lumpsum vs SIP — when to use which
Lumpsum works best when you have a large sum available and believe the market is fairly valued. SIP works better for regular income earners who want to average out market volatility over time. Many investors combine both — a lumpsum to deploy existing savings plus a monthly SIP from salary. Our SIP calculator supports this combined approach with the optional lumpsum field.
The power of compound interest
At 12% returns, money roughly doubles every 6 years (Rule of 72). ₹5 lakh becomes ₹10 lakh in ~6 years, ₹20 lakh in ~12 years, and ₹40 lakh in ~18 years. This exponential growth is why starting early matters. Planning to draw income from your corpus later? Use the SWP calculator to see how long it can sustain monthly withdrawals.
Common Uses
- Bonus and windfall investment: Calculate how much a year-end bonus or inheritance will grow if invested as a lump sum in an equity mutual fund.
- One-time vs. SIP comparison: Compare lump-sum and SIP outcomes for the same total investment to choose the better strategy given current market conditions.
- Goal-based investment planning: Work backwards from a target corpus (child's education, home down payment) to determine today's required lump-sum investment.
- Retirement corpus projection: Estimate the maturity value of a PF settlement, gratuity, or superannuation payment invested at retirement.
- Tax-saving investment sizing: Calculate how much an ELSS lump-sum investment will grow over the mandatory 3-year lock-in period.
- FD vs. mutual fund comparison: Compare lump-sum mutual fund returns against FD maturity to make an informed risk-adjusted allocation decision.
- NPS corpus estimation: Project the National Pension System corpus value at retirement based on a one-time top-up contribution.
FAQ
Is lumpsum better than SIP?
Neither is universally better — it depends on market timing and your cash availability. Historical data suggests lumpsum slightly outperforms SIP over long periods if entry is during a market correction. SIP is safer because it averages the entry price. For most retail investors with salary income, SIP fits naturally; lumpsum is better when you have a windfall.
What is a good return rate for lumpsum investment?
Equity mutual funds have historically returned 12–15% per annum over 10+ year periods in India. Debt funds typically return 7–9%. Hybrid or balanced funds fall between. Use 12% as a sensible default for equity-oriented lumpsum investments, and adjust down for conservative portfolios.
How does inflation affect lumpsum returns?
Inflation reduces the real purchasing power of your future corpus. At 6% inflation, ₹15.5 lakh in 10 years has the purchasing power of roughly ₹8.7 lakh today. Toggle the inflation adjustment to see both values — this matters most for long-term goals like retirement where real purchasing power, not nominal rupees, is what you'll spend.
Does the lumpsum calculator store my financial data?
No. All calculations run entirely in your browser. Your investment figures are never sent to a server or stored after you close the page.
What is a good expected return rate for lumpsum investments in India?
Equity mutual funds in India have historically delivered 12–15% CAGR over long periods. Debt funds typically return 6–8%. Use 12% as a conservative estimate for equity and adjust based on your fund's category.
By the Numbers
- Lump-sum investing historically outperforms dollar-cost averaging 68% of the time over a 12-month period (Vanguard Research, 2012)
- The NIFTY 50 index has delivered approximately 13% CAGR over the past 20 years (NSE India)
- ₹1 lakh invested at 12% CAGR for 20 years grows to approximately ₹9.65 lakh
- India's mutual fund industry AUM crossed ₹57 lakh crore in December 2024 (AMFI)