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Next toolsAssumptions and methodology
Transparent calculation notes for Lumpsum Calculator.
Formula used
One-time investment compounding
FV = P x (1 + r)^t
The one-time investment compounds annually at the selected expected return for the chosen time period.
Methodology
- Use the entered amount as initial principal.
- Apply annual compounding at the selected expected return.
- Separate final value into invested amount and estimated returns.
Core assumptions
- Return remains constant across the investment period.
- The investment stays fully invested until the end.
- The value in today's money uses the inflation rate you enter (6% a year by default).
- The optional tax estimate treats the fund as an equity fund redeemed just after the units turn long-term: 12.5% on gains above ₹1.25 lakh, plus 4% cess, with no other equity gains that year and no surcharge.
Not included
- Exit load, expense ratio, market volatility and redemption timing are excluded; tax is excluded unless the equity-fund estimate is on.
- Debt funds are taxed at your slab rate, which the estimate does not cover.
- Mutual fund returns are not guaranteed.
About Lumpsum Calculator
Guide1What is a Lumpsum Calculator?
A lumpsum calculator estimates the future value of a one-time investment using an assumed annual return and investment period. It is useful when you want to invest an existing amount such as a bonus, maturity proceeds, asset sale proceeds, or idle savings.
2Lumpsum Formula
The future value is calculated as:
FV = P x (1 + r)^t
- FV = Future value of the investment
- P = One-time investment amount
- r = Expected annual return rate
- t = Investment period in years
3How to Use This Lumpsum Calculator
- Step 1: Enter the one-time investment amount
- Step 2: Set the expected annual return
- Step 3: Choose the investment period
- Step 4: Set the inflation rate for the value in today's money and, for an equity fund, turn on the tax estimate
- Step 5: Review the final value before tax, the estimated returns, the value after tax and in today's money, and the yearly growth
4Lumpsum vs SIP
Lumpsum investing puts the full amount to work immediately, while SIP spreads investment over time. Lumpsum may benefit from longer time in the market, but SIP can reduce timing risk when markets are volatile.
Frequently Asked Questions
FAQWhen should I use a lumpsum calculator?
Use it when you already have a one-time amount (a bonus, maturity proceeds or sale proceeds) and want to estimate what it could grow to over a chosen period.
Is lumpsum investment better than SIP?
It depends on your cash availability, risk comfort, and market timing risk. Lumpsum invests immediately, while SIP spreads entries over time.
Are lumpsum returns guaranteed?
No. Mutual fund returns are market-linked. This calculator shows estimates based on the return assumption you enter.
Does this include tax or expense ratio?
Not by default: the final value is before tax. Turn on "Estimate tax (equity fund)" for an estimate of the long-term capital gains tax on an equity fund: 12.5% on gains above ₹1.25 lakh in a tax year, plus 4% cess, assuming no other equity gains that year. Debt funds are taxed at your slab rate and are not estimated. Exit load, the expense ratio and redemption timing are not included.
Why should I check inflation adjusted value?
Inflation adjusted value gives a rough estimate of future purchasing power in today's terms, at the inflation rate you set (6% a year by default), which can be more useful for long-term planning.