How Much Will a ₹5,000 Monthly SIP Grow To in 20 Years?
A Systematic Investment Plan, or SIP, is simply investing a fixed amount every month into a mutual fund. The question almost everyone asks before starting is the right one: if I put in ₹5,000 a month, what will I actually have in 20 years? The short answer is that at an assumed 12% annual return, a ₹5,000 monthly SIP grows to roughly ₹50 lakh — and the most surprising part is how little of that you actually contribute.
The numbers, broken down
Over 20 years you make 240 monthly payments of ₹5,000, so your own contributions total ₹12 lakh. At an assumed 12% annual return compounded monthly, the corpus grows to about ₹49.5 lakh. That means roughly ₹37.5 lakh — about three-quarters of the final amount — is growth, not money you put in. This is the whole point of investing early and staying invested: compounding does most of the heavy lifting.
Why the last few years matter most
Compounding is back-loaded. In the first year your balance is small, so the returns are small. By year 18 or 19 the balance is large, so each year of growth adds a huge amount. A SIP you stop after ten years gives up far more than half the final corpus, because you cut off exactly the years when growth is largest. The single most valuable thing you can do is simply not stop.
What a 'step-up' does
Most people earn more each year, so keeping the SIP flat at ₹5,000 wastes that rising income. A step-up SIP increases the amount every year — say by 10%. If you step up that ₹5,000 by 10% a year, the 20-year corpus jumps from about ₹50 lakh to well over ₹90 lakh, because you are feeding more money into the machine during the high-growth years. The extra effort is modest; the difference is enormous.
What the same SIP becomes at different rates and durations
Because compounding is so back-loaded, small changes in the assumed return or the time you stay invested move the final figure dramatically. Keeping the SIP fixed at ₹5,000 a month:
- At 10% for 20 years: about ₹38 lakh. At 12%: about ₹50 lakh. At 14%: about ₹66 lakh — two percentage points either way moves the result by well over ₹10 lakh.
- At 12% for 10 years: about ₹11.6 lakh — of which ₹6 lakh is your own money.
- At 12% for 15 years: about ₹25 lakh.
- At 12% for 25 years: about ₹95 lakh — nearly double the 20-year figure for just five more years.
The cost of waiting five years
Flip that last number around and the message is stark. Starting at 25 and running the SIP to 50 builds roughly ₹95 lakh; starting at 30 with everything else identical builds roughly ₹50 lakh. The five-year delay costs about ₹45 lakh of final corpus, even though the actual money not invested in those years is only ₹3 lakh. Those early instalments matter so much because they are the ones that compound the longest. Whatever amount you can manage, starting now beats starting bigger later.
Is the 12% return guaranteed?
No. 12% is a common long-run assumption for Indian equity funds, but actual returns vary year to year and can be negative in any single year. SIPs work partly because regular buying smooths out those ups and downs, but the final figure is an estimate, not a promise. Use a lower assumption like 10% if you want a more conservative plan.
Lump sum or SIP — which grows more?
If you already have a large amount and the market only ever went up, a lump sum invested today would win because it is exposed for longer. In the real world, where markets fall as well as rise, a SIP reduces the risk of investing everything at a peak. Most people also simply do not have a lump sum, which is why monthly investing is the practical default.
The bottom line
A ₹5,000 monthly SIP is small enough to be painless and, given 20 years and a reasonable return, large enough to build real wealth — around ₹50 lakh, most of it from compounding. Start as early as you can, step up the amount as your income grows, and resist the urge to stop when markets wobble. Run your own figures with our free calculator before you begin.