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What is a lumpsum calculator?

A lumpsum calculator estimates how much a one-time investment will grow at an assumed rate of return over a chosen period. It uses the compound interest formula and shows the maturity value, the absolute gain, and the wealth ratio (final value ÷ amount invested).

The compounding effect on lumpsum investments

₹1,00,000 invested at 12% for 10 years grows to ~₹3.1 lakh. The same amount at the same rate for 20 years grows to ~₹9.6 lakh — three times more for the same effort, just twice the time. The longer your horizon, the more compounding does the heavy lifting.

When lumpsum beats SIP

If markets are in a steady uptrend or you receive a windfall (bonus, ESOP exit, inheritance), lumpsum captures more upside. If markets are volatile or near a peak, splitting the lumpsum into a 6–12 month STP (Systematic Transfer Plan) usually gives a better risk-adjusted outcome.

الأسئلة الشائعة

What is a lumpsum investment?
A lumpsum (or one-time) investment is a single deposit into a mutual fund, FD, or any compounding instrument — as opposed to SIP, where you invest monthly. Lumpsum benefits fully from compounding from day one but exposes the entire amount to market timing risk.
How is lumpsum return calculated?
Future Value = P × (1 + r)ⁿ, where P is the principal, r is the annual return rate, and n is the number of years. The calculator assumes annual compounding for simplicity. Mutual funds compound continuously, but the difference at typical rates is negligible.
Which is better — lumpsum or SIP?
Lumpsum can outperform SIP in a steadily rising market because all your money compounds for the full period. SIP outperforms in volatile or sideways markets via rupee-cost averaging. For long horizons (10+ years), the difference shrinks; salaried investors should typically prefer SIP because it matches their income flow.
What return rate should I assume?
Equity mutual funds: 10–14% p.a. long-term. Debt funds and FDs: 5–8% p.a. PPF/EPF: 7–8.25%. Use 12% as a conservative estimate for a diversified equity fund over 10+ years. These are not guaranteed — past performance is not predictive.
Does the calculator include taxes?
No. This shows the gross corpus. Equity gains held over 12 months attract 12.5% LTCG tax above ₹1.25 lakh per year (FY 2024-25). Debt fund gains are taxed at slab rate. Subtract applicable tax from the gain to get post-tax returns.

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