Investing · 8 min read
SIP vs Lumpsum — which actually wins in Indian markets?
The textbook answer is 'lumpsum on average wins.' The honest answer is 'most people can't psychologically handle lumpsum.' Here's how to choose.
Krish Dalal
Founder and editor, PaisaExpert. Master's in Business Management, SP Jain School of Global Management, London. · Last updated 2026-04-15
Every finance influencer tells you SIP is the best way to invest. They're half right. SIP isn't mathematically optimal — it's emotionally optimal. And for 95% of people, emotional optimisation matters more than mathematical optimisation.
What the data actually says
Backtests on Indian large-cap indices since 2000 show that lumpsum-on-day-1 beats a 12-month SIP roughly 65% of the time. But the years lumpsum loses, it loses badly (2000, 2008, 2020). SIP is the better insurance against entering at a market peak.
The step-up SIP is the secret weapon
A flat ₹10,000/month SIP for 20 years at 12% gives you about ₹99 lakh. A ₹10,000/month SIP with a 10% annual step-up at the same rate gives you about ₹1.8 crore. Same starting point, near-double outcome.
What to do next
- Pick one broad-market index fund and one mid/small-cap fund.
- Set a SIP at 30% of your current monthly investible surplus.
- Set annual step-up to 10% (every March, contributions increase 10%).
- Don't check the value more than once a quarter.