The lever you control beats the one you chase

Everyone shops for the fund doing 14 instead of 12. I did too, for years. Then one evening I put the boring lever next to the exciting one, and the exciting one lost.

Same Rs 10,000 monthly SIP. 25 years. I ran three versions.

Flat at 12 percent ends at about 1.88 crore. Now chase the harder thing, squeeze two more points out of the fund, get it to 14 percent. That ends at 2.70 crore. Two extra points of return, sustained for a quarter century, bought you 82 lakh.

Now leave the return at 12 and pull the other lever instead. Start the same 10,000, step it up 10 percent every year the way a salary actually grows. That ends at 4.23 crore. The contribution lever added 2.35 crore. Almost three times what chasing return managed.

Here is the honest part, because the brochure version skips it. The step-up is not free. You put in 118 lakh over the years against 30 for the flat SIP. But the increases only ride your raises, so it is the same slice of a bigger pay cheque, the slice lifestyle creep quietly eats if you do not move it into the SIP first.

And timing inside the plan matters more than people think. A top-up in year three compounds for 22 years. One in year twenty barely moves the needle. Switch the increase on young, then leave it running.

To match that step-up with a flat SIP you would have to start at Rs 22,500 a month from day one, money a 25-year-old rarely has. What the 25-year-old does have is the box marked increase SIP by 10 percent. The one nobody talks up, the one only you can tick.

The bigger number was never in the fund. It was in the contribution

The three versions, checked

I reran the opening's three SIPs with 1 percent a month for 12 percent (and 14 divided by 12 for 14 percent), each instalment paid at the end of the month. They reproduce: Rs 1.88 crore flat, Rs 2.70 crore at 14 percent, and Rs 4.23 crore with a 10 percent yearly step up.

The two levers are not equally available. Two extra points of return a year for 25 years is something very few funds deliver, and nobody can choose it in advance. A 10 percent yearly increase in the SIP is a setting in the mandate.

Run your own step up

A flat SIP shrinks every year

There is a second reason the step up matters, and it has nothing to do with growth. A flat Rs 10,000 SIP buys less every year. All India CPI inflation was 4.82 percent in Aug 2026, on MOSPI's figures. At that rate, Rs 10,000 in 25 years has the purchasing power of about Rs 3,080 today. A SIP that never rises is a SIP that quietly falls.

So a step up near the inflation rate is not saving more. It is standing still. Anything above it is the real increase. The opening's 10 percent sits about five points above recent inflation, which is roughly what a salary that grows ahead of prices allows.

Early increases do most of the work

The opening's timing point is the reason to switch the step up on early. An extra Rs 1,000 a month added in year three gets 22 years of compounding. The same Rs 1,000 added in year twenty gets five.

The step up SIP calculator shows the effect for any increase and period. The free Learn module on inflation and its investment impact explains real returns and why a goal's rupee figure has to grow with prices. The post on lifestyle creep covers the behaviour side: deciding the step up before the raise lands.