Step-up SIP vs flat SIP — the ₹1 crore difference
₹10K/mo flat for 20 years at 12% = ₹99L. Same SIP with 10% annual step-up = ₹2 cr. The compounding compounds.
Most people start an SIP and never increase it. ₹5,000/month at age 25 stays ₹5,000/month at age 35. The result: a tiny corpus when you actually need it. Step-up SIP — increasing the amount every year by 10% — can literally double your final corpus.
The shocking math
Investing ₹10,000/month for 20 years at 12% historical equity return:
| Strategy | Final corpus |
|---|---|
| Flat ₹10K/month for 20 years | ₹99 lakh |
| Step-up 5% annually | ₹1.42 cr |
| Step-up 10% annually | ₹2.04 cr |
| Step-up 15% annually | ₹3.05 cr |
Same starting amount, same return. Just by increasing the SIP yearly, you can add ₹1 crore+ to the final corpus.
Why this works
Two compounding effects stack:
- Your money compounds at market return (12%)
- Your contribution compounds at step-up rate (10%)
So you're not just earning more on more money — you're also adding more money each year that itself starts earning. The growth curve becomes super-exponential.
10% — the magic number
10% step-up matches average Indian salary hikes. So your SIP grows in lockstep with income — no lifestyle sacrifice, no extra effort. By year 5, you're investing ~₹16K (started at ₹10K). By year 20, ₹61K/month.
Most fund houses (Groww, Zerodha Coin, Kuvera, MF Central) support automatic step-up SIP. Set it once, forget it.
The "but I already increase manually" defence
If you genuinely increase your SIP every salary hike, you're already doing this. But honestly? Most people forget. Auto-step-up removes the discipline requirement.
What if I can't afford to step up?
The default 10% assumes salary hike. If you're between jobs or in low-hike phase:
- Drop to 5% step-up — still better than flat
- Pause for one year, restart next year
- Even 0% one year still beats reducing the SIP
Step-up vs adding new SIPs
"I'll add a new SIP each year" — same effect functionally. But operationally messier (multiple folios, NAV averaging gets complex). Single fund + step-up is cleaner.
Run your numbers
Plug your current SIP + step-up % + return + years into our step-up SIP calculator. Compare with flat SIP. The advantage will surprise you.
FAQs
Can I do step-up SIP in any fund?
Yes — most equity / hybrid funds support it via direct platforms. Liquid funds usually don't (defeats the purpose).
What if step-up makes my SIP unaffordable in year 15?
You can pause or reduce anytime. SIPs are flexible. The platform won't force you to keep stepping up.
Should I step-up beyond 10%?
If you can — 15% step-up adds another ₹1cr in 20 years. Limit is your monthly cash flow, not the math.
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