What is the Lump Sum Calculator?
A lump sum calculator estimates the future value of one amount under a planning return assumption and time horizon you enter. It can compare mathematical scenarios, but it does not select an investment, prescribe an allocation or forecast market returns.
Use a documented fixed rate for a fixed-interest product or a user-selected planning assumption for a market-linked scenario. Actual market-linked outcomes may be materially higher or lower.
How does it work?
The calculator applies FV = PV × (1 + r)^n, where PV is the entered amount, r is the entered periodic planning rate and n is the number of periods. It holds the entered rate constant for the full illustration.
The output is pre-tax and excludes product charges. Tax treatment, expense ratios and exit terms depend on the asset and circumstances and must be reviewed separately.
Worked example
Enter ₹3,00,000, a 15-year horizon and a planning return assumption of your choice. The output is the value produced by those inputs, not a forecast. Run lower and higher assumptions to see sensitivity without treating either result as expected.
When to use this calculator
- 1You have received a year-end performance bonus, ESOP vesting payout, or incentive and want to project how much it will grow if invested today versus spending it.
- 2Comparing several user-entered return scenarios for the same amount and horizon.
- 3You have received a gratuity, VRS payout, or provident fund settlement and need to estimate how the lump sum will compound to support retirement income needs.
- 4Comparing a documented fixed rate with a separate hypothetical market-linked scenario.
- 5Understanding how the entered rate and horizon change modeled future value.
Common mistakes to avoid
- ✕Treating one planning return assumption as an expected outcome for every asset or product.
- ✕Ignoring inflation when assessing the real value of the projected corpus: a projected ₹50 lakh in 20 years sounds large, but at 5% average inflation, its purchasing power in today's terms is only about ₹18.8 lakh. Always compare future value against inflation-adjusted needs.
- ✕Treating this future-value comparison as market-timing or deployment advice.
- ✕Overlooking the tax treatment change for debt mutual funds post-April 2023: many investors still assume debt funds offer indexation benefits, but gains are now fully taxable at the individual's income slab rate, which can materially erode post-tax returns for those in the 30% bracket.
- ✕Ignoring product charges, taxes and exit terms that the calculator does not model.
Frequently asked questions
- Does this calculator decide between a lump sum and SIP?
- No. It models a one-time amount under entered assumptions. Cash-flow timing, risk, product terms and personal circumstances are outside this calculation.
- How is LTCG tax calculated on lump sum mutual fund redemption in FY 2026-27?
- For equity mutual funds, gains on units held for more than one year are classified as Long Term Capital Gains (LTCG). Under the Finance Act 2024, LTCG up to ₹1.25 lakh per financial year is exempt from tax. Gains above this threshold are taxed at a flat 12.5% without the benefit of indexation. For example, if you invested ₹5 lakh as a lump sum and redeemed after 5 years for ₹9 lakh, your gain is ₹4 lakh. After the ₹1.25 lakh exemption, taxable LTCG is ₹2.75 lakh, and the tax payable is ₹34,375. Debt mutual fund gains, regardless of holding period, are taxed at your applicable income tax slab rate.
- Can I model a scheme or account contribution?
- Only if the entered amount, rate and horizon accurately represent that scenario. Scheme limits, exit rules and tax treatment are not validated here.
- What return rate should I enter?
- Enter a planning assumption you want to test. NiyamFin does not prescribe an equity, debt or product-specific future return. Compare multiple assumptions because actual outcomes can differ materially.
- Does the lump sum calculator account for inflation?
- No. It shows nominal future value under the entered return assumption. Model inflation separately using an assumption appropriate to the scenario and compare values in consistent rupees.