Priyanka Personal Finance
Smart Money · Simple Words · India
Smart Money · Simple Words · India
Got a sum to invest? Compare putting it all in at once (lumpsum) versus spreading it as an equal monthly SIP — same total, same return — and see which grows more, with a year-by-year breakdown.
Monthly SIP works out to ₹10,000 over 120 months.
| Year | Lumpsum | SIP | Difference |
|---|
Educational use only · Not financial advice · Assumes a steady return; real markets fluctuate · Mutual funds carry market risk
Both invest the same total amount; the only difference is timing. A lumpsum puts the entire amount to work immediately, so it compounds for the full period — in a steadily rising market that usually wins. A SIP spreads the same money across many months, so on average it is invested for only about half the time, but it removes the risk of investing everything right before a fall and benefits from rupee-cost averaging when markets dip.
Lumpsum future value uses FV = P × (1 + r)^years. The SIP invests the same total as equal monthly instalments and uses the SIP future-value formula. Both assume the same steady annual return, so the comparison isolates the effect of timing alone. Real markets are volatile, which is exactly why SIP's averaging matters in practice.
For the same amount in a steadily rising market, a lump sum usually earns more because the full amount compounds for the entire period. But SIP wins when markets are volatile or falling early, and it suits most people who invest from monthly income and want to avoid timing the market.
You enter a total amount, time period and expected return. The tool invests that whole amount as a lump sum, and separately spreads the same total as an equal monthly SIP, then compares the final value and shows a year-by-year breakdown.
SIP tends to beat a lump sum when the market falls or stays flat early and recovers later, because your monthly instalments buy more units at lower prices — a benefit called rupee-cost averaging.
If markets look reasonable and you can stay invested long term, investing a bonus as a lump sum has historically done well. If you are nervous about a near-term fall, staggering it over a few months (an STP or SIP) reduces timing risk.