SIP vs Lumpsum Calculator

On the math, a lumpsum usually wins — every unit of money compounds for the full period. Vanguard found lump-sum investing beat spreading it out ~two-thirds of the time. A SIP's advantage is risk, not return: it protects against investing just before a fall and suits people investing from monthly income.

It invests the same total both ways. The lumpsum puts the whole sum in today; the SIP spreads it as equal monthly instalments (monthly = total ÷ months), both valued at the same end date. Equal capital is what makes the comparison meaningful — many tools compare unequal amounts.

Time in the market. With a lumpsum, 100% is invested from day one; with a SIP, later instalments earn for less time. At a constant positive return, more time wins. For 1,200,000 at 12% over 10 years: lumpsum ~3,730,000 vs SIP's ~2,320,000.

When the market falls early. A lumpsum is fully exposed from day one; a SIP keeps buying at lower prices (cost averaging) and loses less. Enter a negative return in this calculator and the verdict flips to SIP. A SIP also wins for anyone investing from monthly income, with no lump to deploy.

It's the effect of investing a fixed amount regularly. Because the amount is fixed, it buys more units when prices are low and fewer when high, lowering the average cost. This is a SIP's core risk-reduction benefit — most valuable in volatile or falling markets.

It carries timing risk: all your money is exposed to the drop if you invest just before a fall. If you have a lump but are nervous about timing, an STP (systematic transfer plan) moves it from a low-risk fund into equity gradually — capturing time-in-market benefit while smoothing entry.

An STP parks your lump sum in a low-risk fund and transfers a fixed amount into equity at intervals — a middle ground between lumpsum and SIP. You deploy over months, reducing timing risk while keeping most money invested sooner. If you want to ease in, an STP is usually the practical choice.

Yes — a higher steady return widens the lumpsum's lead because its early money compounds harder. That's why an unrealistic rate exaggerates the advantage. Plan with a grounded rate (~10–12% for equity); the comparison only flips when returns are low or negative.

Often, yes — that's what an STP does. You can also invest part as lumpsum and part as SIP. If markets look expensive, lean toward staggering; if you have a long horizon and money ready, investing sooner usually wins. The best plan is the one you'll actually stick with.

No — it compares pre-tax, pre-cost maturity (the standard approach). In practice, CGT, exit loads and expense ratios reduce both. A long SIP can also have different tax treatment per instalment. Treat the figures as a gross comparison and apply your local tax rules for a net view.

Yes — fully global. Enter your amount in any currency and results come back in it. The all-at-once vs spread-over-time decision applies to systematic investing anywhere, not just Indian mutual funds.

The routes finish within a whisker — the gap is smaller than the swing from returns being a couple of points off. Picking a "winner" is false precision; the honest answer is it's a temperament choice: go with whichever route you'll comfortably stick with.