Lump Sum Investment Calculator
Estimate one-time investment growth, future value and gains over your chosen period using an assumed annual return.
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100,000 investment · 10% return · 10 years
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Complete the fields above to see your result. You can change any value at any time.
Calculation methodology
The projection uses compound growth: starting amount × (1 + annual return) raised to the number of years.
Important assumptions
- Results are estimates based on the values you enter.
- Rates and returns are assumed for the projection period and may change in real life.
- Taxes, fees, market conditions and provider-specific rules may affect actual outcomes.
Lump Sum Investment Calculator Guide
What Is a Lump Sum Investment Calculator?
A lump sum investment calculator estimates how a one-time investment could change in value over a chosen period. Unlike a SIP, where money is added regularly, a lump sum starts with the full amount invested at the beginning of the model.
Enter the starting amount, expected annual return and investment period to estimate the future value, total gain and growth rate. The result depends on the assumptions you choose and is not a forecast or guarantee.
How Does a Lump Sum Investment Grow?
In a compound-growth model, returns earned remain invested and can generate further returns in later periods. The longer the money stays invested, the more time compounding has to affect the result, although actual investment returns can fluctuate and may be negative.
The calculator simplifies this process by applying the annual return assumption consistently over the selected period. Actual investments may have uneven returns, fees, taxes or other conditions that are not represented by this simplified model.
Lump Sum Calculator Formula
For annual compounding, the future value is calculated as FV = P × (1 + r)^t, where P is the starting principal, r is the annual return expressed as a decimal, and t is the number of years.
For example, a 7% annual assumption is entered as 0.07 in the formula. The model compounds the amount for the selected number of years; it does not mean the investment will actually earn 7% every year.
Lump Sum Investment Example
Suppose you invest ₹1,00,000 once and model a 7% annual return for 5 years. Under annual compounding, the illustrative future value is about ₹1,40,255 before fees and taxes, with an estimated gain of about ₹40,255.
This example only demonstrates the formula. A real investment may grow more slowly, grow more quickly or lose value, depending on the asset and market conditions. Change the amount, rate and period above to test other assumptions.
Lump Sum vs SIP: What Is the Difference?
A lump sum invests a larger amount at one time, while a SIP invests smaller amounts at regular intervals. Their outcomes can differ because contributions enter the market at different times and therefore have different exposure to market movements.
A fair comparison should use a clearly stated total budget and time horizon. Use the SIP Calculator to model regular contributions, or the Investment Comparison Calculator to compare a lump sum with other plan types under a shared set of assumptions.
What Return Should I Enter?
Choose a rate as a scenario rather than as a promise. The appropriate assumption depends on the type of investment, its risk, costs and time horizon. It is useful to test a lower-return scenario alongside your central assumption instead of relying on one optimistic result.
For bank deposits, use the product's stated rate and compounding terms where applicable. For market-linked investments, remember that returns vary over time and a constant-return calculation cannot model the full range of possible outcomes.
How Inflation Affects a Future Amount
A future balance is usually shown in nominal currency. As prices rise, that amount may buy less than the same amount buys today. A projected gain in rupees therefore does not automatically represent the same gain in purchasing power.
When comparing long-term goals, consider inflation alongside the nominal projection. This calculator's future value is based on the return assumption entered; it should not be read as an inflation-adjusted or guaranteed amount unless a separate adjustment is explicitly shown.
How to Use This Lump Sum Calculator
Enter the amount you plan to invest once, select the period you want to model and enter an annual return assumption. Review the projected value and gain, then change one assumption at a time to understand what drives the result.
Compare multiple scenarios before using a projection for planning. Actual outcomes can differ because of changing returns, product terms, costs, taxes and the timing of investment.
The calculator runs in your browser — nothing is stored on our servers. Results are estimates based on the assumptions you enter.
Lump Sum Investment Calculator for clearer money decisions
Estimate one-time investment growth, future value and gains over your chosen period using an assumed annual return.
The calculator runs in your browser — nothing is stored on our servers. Switch between INR and USD at the top right of the workspace to see values in your preferred currency. Compare two sets of assumptions side by side.
What is a lumpsum investment calculator?
A lumpsum calculator estimates the future value and gain from investing an amount once, using the starting amount, expected annual return and investment period.
How much can ₹1 lakh grow in 5 years?
The projected value depends on the return assumption and compounding method. Enter ₹1 lakh and 5 years in the calculator, then compare more than one return scenario.
Can I use a lumpsum calculator for monthly investments?
A lump sum is a one-time investment, while a monthly investment is usually modeled as a SIP. Use the SIP Calculator for regular monthly contributions, or the Investment Comparison Calculator to compare different contribution plans.
What is the difference between a lump sum and a step-up SIP?
A lump sum invests a single amount at the start. A step-up SIP starts with recurring contributions that increase at a chosen interval, often annually. Use the Step-Up SIP Calculator to model increasing monthly contributions.
Is a lump sum investment return guaranteed?
No. The calculator uses a chosen rate for illustration. Market-linked investments can rise or fall, and deposit products are subject to their stated terms and applicable conditions.
Does the result include tax and fees?
The displayed projection follows the calculator's stated methodology and may not include product-specific taxes, fees or other costs. Check the actual investment terms before relying on the estimate.
Can I compare a lump sum with other investments?
Yes. Use the Investment Comparison Calculator to compare a lump sum with SIP, Step-Up SIP, FD and other supported scenarios using clearly stated assumptions.
What is the lump sum investment formula?
For annual compounding, future value = principal × (1 + annual return)^years. The result is an estimate based on the rate entered.
How much can ₹5 lakh grow in 10 years?
The projected value depends on the annual return assumption. Enter ₹5 lakh and 10 years, then compare several scenarios to see the estimated future value and gain. Market-linked returns are not guaranteed.
Is lump sum better than SIP?
Neither method is universally better. A lump sum invests money at one time, while a SIP spreads contributions over time. Compare the same budget and horizon while considering market risk and cash-flow needs.
Can I calculate monthly withdrawals from a lump sum?
This calculator estimates growth from a one-time investment and does not model scheduled withdrawals. Use the SWP Calculator to estimate regular withdrawals from an invested corpus.
What return should I use in the calculator?
Use a reasonable scenario for the investment type and test lower and higher assumptions. The selected rate is not a prediction or guarantee of future performance.
How does inflation affect a lump sum investment?
Inflation reduces purchasing power over time. A nominal future value can be larger in rupees but buy less than expected today, so consider inflation when planning long-term goals.
Educational estimate only. Not investment, tax or legal advice. Please verify current rates, slabs, taxes, fees and rules before making a financial decision.