What is a lumpsum investment?

A one-time investment of a larger amount, left to compound over a period, as opposed to investing smaller amounts every month through a SIP.

How is lumpsum growth calculated?

The amount is multiplied by (1 + annual return) for each year invested. This calculator compounds annually, which is the usual convention for lumpsum planning.

Should I invest a lumpsum or use a SIP?

A SIP suits regular income and reduces the risk of bad timing. A lumpsum suits money you already have, but investing it all at once exposes you to the market level on that day.

Does the inflation field change the investment?

No. It only shows what the maturity value is worth in today's money, so you can see the real purchasing power of the corpus.

Lumpsum Investment Calculator

Calculate how a one-time lumpsum investment grows over time at your expected return, with a year-by-year table and an inflation-adjusted value.

Investment Amount (₹)

Expected Annual Return (%)

Investment Period (years)

Expected Inflation (%) — optional

How to Use

1
Enter the amount
Type the one-time amount you plan to invest.
2
Set return and period
Enter the expected annual return and how many years it will grow.
3
View the growth
See the maturity value, gains, and the year-by-year breakdown.

How It Works

A lumpsum investment puts a larger amount to work at once and lets it compound over time. This calculator shows how a one-time investment grows at your expected annual return, with a year-by-year breakdown and an optional inflation adjustment so you can see the real value of the result.

How lumpsum compounding works

The maturity value is Amount × (1 + annual return)^years. Each year's growth is earned on the previous year's total, including earlier gains. This calculator compounds annually, which is the usual convention for lumpsum planning, while the SIP calculator compounds monthly.

Lumpsum versus SIP

A lumpsum gets all the money working from day one, which helps in a rising market. A SIP spreads purchases over time, which helps when prices fall or you have only part of the money available. Neither is better in every case, so comparing both with your expected return can show which fits your situation.

Seeing real returns

A large maturity figure can hide the effect of inflation. Enter an inflation rate to see the result in today's rupees. Money that grows at 10% while prices rise at 6% is only about 4% richer in real terms each year.

Examples

₹5 lakh at 12% for 10 years

The maturity value is about ₹15.5 lakh, meaning gains of around ₹10.5 lakh on ₹5 lakh invested. The year-by-year table shows the gains growing each year as the base gets larger.

The same ₹15.5 lakh after 6% inflation

Adjusted for 6% inflation over 10 years, ₹15.5 lakh is worth about ₹8.7 lakh in today's money. That gap is the reason inflation matters when you plan long-term goals.

Common Use Cases

Estimating what a bonus, inheritance, or maturing fixed deposit could grow to
Comparing a one-time investment with a monthly SIP over the same period
Checking the real value of savings after inflation
Planning when to rebalance or add to an existing investment

Tips

A lumpsum invested at a market high can take years to recover if prices fall soon after. Spreading large amounts over several months, or using a SIP or STP, reduces that risk.
Returns are assumptions, not guarantees. Use a conservative rate, and check the figure against what you would earn on lower-risk options too.
Remember that gains may be taxed when you withdraw, and tax rules differ by investment type. The calculator shows gross figures before tax.

Frequently Asked Questions

Related Tools

Age Calculator

Calculate your exact age in years, months, days, hours, and minutes from your date of birth.

EMI Calculator

Calculate monthly EMI, total interest, total payment, and view full amortization schedule for any loan.

Mortgage Calculator

Calculate monthly mortgage payments including principal, interest, property tax, and insurance.