Guide
The honest answer to "SIP or lumpsum?" is: it depends on whether you actually have the lumpsum.
If markets generally rise over time — which they have historically — then money invested earlier has longer to compound. A lumpsum puts all your money to work on day one, so on paper it tends to beat the same total amount drip-fed through a SIP.
Our SIP-vs-lumpsum calculator shows this directly: feed in the same total cash and the lumpsum usually ends with a higher corpus.
That advantage assumes you have the full sum available today. Most people don't. They have a monthly surplus from salary — which is precisely the cash flow a SIP is designed for.
Comparing a lumpsum you don't have to a SIP you can actually do is comparing a fantasy to reality. For most salaried investors, the real choice isn't SIP versus lumpsum — it's SIP versus not investing.
Lumpsum suits a windfall: a bonus, an inheritance, maturity proceeds. If the money is sitting idle, getting it invested generally beats holding it for a 'better' entry point.
A SIP suits regular income and nervous investors. If a large one-time investment would keep you up at night about market timing, staggering it removes that anxiety — and a calmer investor is one who stays invested.
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