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Grow a lumpsum investment over time

Project the future value of a one-time investment using annual compounding. Free, instant, and accurate to the rupee.

India Compliant Live Calculation Visual Breakdown

Your lumpsum details

A single investment, compounded annually at the expected rate.

Future value
₹3.11 L
After 10 years at 12% p.a. compounded annually
Invested₹1,00,000
Wealth gain₹2,10,585
Return rate12% p.a.
Period10 years

How lumpsum returns are calculated

A lumpsum investment compounds annually — your principal earns interest, then that interest earns interest in subsequent years.

  1. 01

    Choose principal

    The one-time amount you can invest today.

    principal = 100000
    // one-time investment
  2. 02

    Assume return

    A realistic expected annual return — equity 10-14%, debt 6-8%, hybrid 8-10%.

    r = 12% ÷ 100
    // annual rate (decimal)
  3. 03

    Compound annually

    Compounding rewards patience. Doubling time at 12% is roughly 6 years (rule of 72).

    FV = principal × (1 + r)^years
    // e.g. 100000 × 1.12^10
FormulaFV = P × (1 + r)^nP = principal, r = annual rate (decimal), n = years
Why we use this formula by default.
Indian payroll convention, statutory references, and the SaaS tooling that runs payroll all converge on this approach. Below are the authoritative sources we cross-checked.
01
Regulator

SEBI MF Regulations

Mutual fund disclosure and investor protection framework.

02
Industry Body

AMFI

AMFI definitions of CAGR, lumpsum, NAV used in calculations.

03
Research

Value Research

Historical lumpsum and fund performance data for India.

04
Theory

Investopedia Compound Interest

Compound interest theory and time-value-of-money reference.

05
Research

Morningstar India

Independent fund research, ratings, and historical analysis.

06
Tax Reference

ClearTax — Lumpsum Tax

Tax treatment of one-time MF investments and exit loads.

FAQs about lumpsum investing

Common questions about one-time investments, compounding, and tax treatment.

Depends on market timing and cash availability. Lumpsum wins when markets are low or trending up; SIP wins when markets are volatile (rupee cost averaging). With idle cash and a long horizon, lumpsum usually outperforms SIP statistically.

A quick mental shortcut: years to double ≈ 72 / annual return rate. At 12% your money doubles in ~6 years; at 8% in ~9 years.

No. Returns depend on the underlying asset (equity, debt, gold, etc.). Past performance is not a guarantee of future returns. This calculator projects assumed returns, not realized ones.

For equity holdings: LTCG above ₹1L per year at 10% (held > 12 months); STCG at 15% otherwise. For debt: gains taxed at slab rate (post Apr-2023). For FDs: interest is fully taxable at slab rate.

Most investors fail at timing. Common alternative: split a large lumpsum into 3-6 monthly tranches (STP / staggered entry) to reduce timing risk.

For 10+ year equity horizons: 10-12% is realistic. For shorter horizons or volatile asset classes: stay conservative. Always model with multiple scenarios.

Simple interest is paid only on the principal; compound interest is paid on principal + accumulated interest. Compound interest grows faster — and the longer the time horizon, the bigger the gap.

Most investments allow early withdrawal, but with consequences. Equity funds: exit load for first year. ELSS: 3-year lockin. PPF: 5-year lockin. FDs: penalty on rate. Plan your liquidity needs separately.

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