Lumpsum Calculator
India Uses Indian income-tax and TDS rules for investments and deposits. Figures are in rupees.
Lumpsum and mutual fund calculator: a one-time investment after the expense ratio, regular vs direct plans, tax on redemption, value in today’s money and a SIP comparison.
Educational estimate only. Not a lending decision. Your numbers stay in this browser.
Results
How to read this: the verdict describes how much room your numbers leave, not a decision or an offer. Change any input to see how much the result moves.
Assumptions and formula
The investment grows at the fund’s return after its expense ratio: (1 + return) × (1 − TER) − 1 a year, because the TER is charged on the fund’s value every day. Value = amount × (1 + that return)^years. The expense cost is the value with no expenses less the value with them.
Tax is taken on redemption at the end, on the gain only: equity funds held over 12 months at 12.5% above ₹1.25 lakh (section 112A), up to 12 months at 20% (section 111A), rates from 23 July 2024; debt funds bought from 1 April 2023 at your slab rate; plus 4% cess. The value in today’s money divides the after-tax value by inflation. The SIP comparison invests the same total in equal monthly amounts over the same years at the same return after expenses.
Worked example
₹1,00,000 for 10 years at 12% before expenses: in a regular plan with a 1.5% TER the return is 10.32% and the value ₹2,67,019; in the direct plan at 0.5%, ₹2,95,400, ₹28,381 more. Tax on the regular plan’s gain is ₹5,463, leaving ₹2,61,557 (10.09% a year). The same ₹1 lakh as ₹833 a month by SIP would reach ₹1,69,360.
What ₹1 lakh grows to as a lump sum
A single ₹1 lakh investment compounding at a steady yearly return, before fund expenses and tax. The calculator takes off the expense ratio and the capital gains tax as well.
| Annual return | 5 years | 10 years | 15 years | 20 years |
|---|---|---|---|---|
| 8% | ₹1,46,933 | ₹2,15,892 | ₹3,17,217 | ₹4,66,096 |
| 10% | ₹1,61,051 | ₹2,59,374 | ₹4,17,725 | ₹6,72,750 |
| 12% | ₹1,76,234 | ₹3,10,585 | ₹5,47,357 | ₹9,64,629 |
| 15% | ₹2,01,136 | ₹4,04,556 | ₹8,13,706 | ₹16,36,654 |
At 12% a lump sum roughly doubles every six years, so over 20 years it grows almost tenfold. The difference between 10% and 12% looks small but adds more than ₹2.9 lakh on every lakh over 20 years, which is why a fund's expense ratio matters: a direct plan that costs 1% less a year keeps that difference.
A lump sum invested all at once is fully exposed to the market on day one. If markets fall soon after, it takes longer to recover than a SIP spread over the same period would. Many investors split a large amount into monthly instalments over 6 to 12 months for that reason.
Common mistakes to avoid
- Using past returns as the expected return. A fund that returned 18% in a strong three-year run is unlikely to repeat it for twenty years; plan with a conservative long-term figure.
- Ignoring the expense ratio. A regular plan can cost around 1% a year more than the direct plan of the same fund, and over 20 years that gap compounds into a large share of the gain.
- Forgetting tax on redemption. Gains on equity funds held for over a year are taxed above the yearly exemption, so the amount you can actually spend is less than the maturity value.
Frequently asked questions
What will ₹1 lakh become in 10 years in a mutual fund?
At 12% a year before expenses, about ₹2.67 lakh after a 1.5% expense ratio, or ₹2.95 lakh in a direct plan at 0.5%, before tax on redemption.
How is a lumpsum investment calculated?
Future value = amount × (1 + return)^years. ₹1 lakh at 12% for 10 years grows to ₹3,10,585 before expenses. After a 1.5% expense ratio the return is 10.32% and the value ₹2,67,019.
How much does a mutual fund’s expense ratio cost?
More than it looks, because it compounds. ₹5 lakh for 15 years at 12% before expenses ends at ₹21.8 lakh in a regular plan charging 1.5% and ₹25.4 lakh in the direct plan charging 0.5%: the 1% difference costs about ₹3.6 lakh.
How is a lumpsum mutual fund taxed?
On redemption, on the gain only. In an equity fund held over a year, gains above ₹1.25 lakh in the year are taxed at 12.5% (plus cess); within a year, 20%. In a debt fund bought from April 2023, gains are taxed at your slab rate. On ₹5 lakh grown to ₹21.8 lakh in an equity fund, the tax is about ₹2 lakh.
Lumpsum or SIP: which is better?
With the same total and a steady return, lumpsum ends higher because all the money is invested from day one: ₹5 lakh at once grows to ₹21.8 lakh, the same ₹5 lakh spread monthly over 15 years to about ₹11.4 lakh. SIP spreads the risk of investing just before a fall and suits money that arrives monthly.
What return should I assume for a mutual fund?
Before expenses, Indian equity funds have returned roughly 10% to 13% a year over long periods, with large swings; debt funds about 6% to 8%. Use a conservative figure, and enter the fund’s actual expense ratio from its factsheet.
Is this a mutual fund calculator?
Yes: a lumpsum calculator, mutual fund calculator and mutual fund return calculator for a one-time investment, with the expense ratio, tax and a SIP comparison. It is also a lumpsum investment calculator and one time investment calculator.
Is this a lump sum investment calculator?
Yes: a lump sum investment calculator and MF lumpsum calculator for a one-time investment in any mutual fund, showing what it grows to at the return you expect.
Sources
Sources reviewed 4 October 2026: checked against their current editions on that date.
- Income-tax Act, sections 111A and 112A as amended by the Finance (No. 2) Act, 2024, and section 50AA: tax on equity and debt mutual fund gains.
- SEBI, total expense ratio (TER): charged daily on a scheme’s net assets and reflected in the NAV; direct plans carry a lower TER than regular plans.
This page is an educational estimate, not personal financial or tax advice. Eligibility and individual circumstances can change the result.