There are two kinds of SIP investors: those who started ₹10,000 a month in 2015 and still invest ₹10,000 a month today, and those whose SIP grew with their salary. Ten years on, the second group has roughly double the corpus — from the same starting point and the same felt sacrifice.
The Core Numbers
₹10,000/month, 12% annual return, 20 years:
| Strategy | Total Invested | Corpus at 20 Years |
|---|---|---|
| Flat SIP (₹10,000 forever) | ₹24.0 lakh | ₹92 lakh |
| 10% annual step-up | ₹68.7 lakh | ₹1.86 crore |
| 15% annual step-up | ₹1.23 crore | ₹2.83 crore |
Yes — the step-up investor puts in more money. That is the point. The 10% increment tracks a typical salary hike, so the proportion of income invested stays constant while the absolute amount compounds. Verify any combination in the step-up SIP calculator, which shows the vs-flat-SIP gap explicitly.
Why It Works: The Later Rupees Are Bigger
In a flat SIP, year-15 contributions are trivial next to your year-15 salary — you are effectively reducing your savings rate every year that inflation and increments raise your income. The step-up fixes the leak. By year 15 the monthly SIP is ₹41,772 — painful-sounding, but by then it's the same share of a much larger salary.
| Year | Monthly SIP (10% step-up) | Cumulative Corpus (12%) |
|---|---|---|
| 1 | ₹10,000 | ₹1.27 lakh |
| 5 | ₹14,641 | ₹9.9 lakh |
| 10 | ₹23,579 | ₹33 lakh |
| 15 | ₹37,975 | ₹84 lakh |
| 20 | ₹61,159 | ₹1.86 crore |
Setting It Up (2 Minutes, Any Platform)
- While registering a new SIP on Groww / Coin / Kuvera / your AMC's site, look for "Step-up SIP" or "Top-up SIP".
- Set the increment: 10% yearly is the sweet spot for most salaried investors.
- Time the trigger month to just after your appraisal cycle (April/May for most Indian companies) so the raise lands before the SIP does.
Already running a flat SIP? You don't need to cancel it — start a second small SIP each year, or use the platform's modify option. The math is identical.
When NOT to Step Up
- Income isn't actually growing. Freelancers and business owners with lumpy income should keep a modest flat SIP and invest surpluses as lumpsums in good months.
- You have expensive debt. A 36% credit card balance beats any 12% SIP. Clear it first — the SIP mistakes guide covers this trap.
- Your EMI load is already above 40% of take-home. Step up prepayments instead; our SIP + EMI guide shows how to split.
Step-Up + Goal Planning
The step-up changes goal math dramatically. Reaching ₹1 crore at 12% needs a flat ₹10,900/month for 20 years — or a step-up starting at just ₹5,400/month. If the flat number for your goal feels impossible, the step-up version usually isn't. Work backwards from your target in the ₹1 crore SIP guide, then set the increment and forget it.