- ₹10,000 a month at an assumed 12% a year grows to about ₹5.51 crore by 60 if you start at 25, ₹3.08 crore from 30 and ₹1.70 crore from 35.
- Starting at 35 instead of 25 means investing only ₹12 lakh less, but ending with ₹3.8 crore less.
- Raising the SIP by 10% a year roughly doubles the result over 20 years, and it is the best tool for a late start.
- Big numbers shrink with inflation. ₹5.51 crore in 35 years is worth about ₹72 lakh in today’s money at 6% inflation.
Everyone has heard that starting early matters. Few people have seen how much. The reason is compounding: your money earns returns, and those returns earn returns, and the effect is heavily back-loaded. Most of the growth happens in the last ten years. Start late, and those are exactly the years you lose.
Same SIP, three starting ages
Three people each invest ₹10,000 a month until 60, at an assumed 12% a year. The only difference is when they start:
The 25-year-old puts in ₹42 lakh in total; the 35-year-old puts in ₹30 lakh. A difference of ₹12 lakh in contributions becomes a difference of ₹3.81 crore at the end. That gap is the cost of waiting.
What it takes to catch up
Say you’re 30 or 35 and want to reach the same ₹5.51 crore by 60. You can, but the monthly amount has to rise steeply:
| Start at | Monthly SIP needed | Total you invest |
|---|---|---|
| 25 | ₹10,000 | ₹42 L |
| 30 | ₹17,887 | ₹64.4 L |
| 35 | ₹32,375 | ₹97.1 L |
Five years of delay nearly doubles the monthly amount needed. Ten years more than triples it. That is the clearest way to see that time does a lot of the work.
Plan a goal from 35 →If you’re starting late: step up every year
Most people can’t start at ₹32,000 a month. But almost everyone’s income rises over time. A step-up SIP raises the monthly amount by a fixed percentage every year, usually in line with your raises, so it never feels like a big jump.
The step-up roughly doubles the result. You invest more in total (₹68.7 lakh against ₹24 lakh), but each year’s increase is small, and it tracks your pay rather than straining it.
Try a step-up SIP →The number that keeps you honest: today’s money
Long-term SIP results look enormous because they are in future rupees. With prices rising about 6% a year, ₹1 crore in 20 years buys what roughly ₹31 lakh buys today. So if your goal is “₹1 crore of today’s buying power in 20 years”, you need about ₹34,866 a month, not the ₹10,871 a month that reaches ₹1 crore in future rupees.
The SIP calculator shows both values. When you set a goal, set it in today’s prices and let the calculator inflate it. See our ₹1 crore SIP table for more durations.
Don’t forget the tax on gains
Equity fund profits are taxed when you sell: 12.5% on long-term gains above ₹1.25 lakh a year. If the ₹5.51 crore from our first example were all sold in one year, the tax would bring it to about ₹4.85 crore. In practice, most people withdraw slowly over many years and pay much less tax. See how withdrawals are taxed.
Four habits that matter more than picking the “best” fund
- Start now, even small. ₹2,000 today is worth more than ₹10,000 “once things settle”.
- Automate it on the day after salary credit, so it is never a monthly decision.
- Step it up every year by at least your raise percentage.
- Don’t stop when markets fall. Falls are when your SIP buys units at lower prices. Stopping then locks in the worst part of the ride.
Frequently asked questions
How much does delaying a SIP by 10 years cost?
In our example, ₹10,000 a month at 12% started at 25 grows to about ₹5.51 crore by 60, against ₹1.70 crore if started at 35. The 10-year delay costs about ₹3.8 crore at 60, while saving only ₹12 lakh of contributions.
What is a step-up SIP?
A SIP whose monthly amount rises by a fixed percentage each year. With a 10% yearly step-up, ₹10,000 a month for 20 years at 12% grows to about ₹1.86 crore, against ₹92 lakh without it.
Is 12% return on SIP guaranteed?
No. 12% a year is an assumption used for illustration. Equity returns vary widely from year to year and over decades. Try lower rates, such as 10% or 8%, in the calculator to see a cautious case.
Is it too late to start a SIP at 35 or 40?
No. You have fewer years, so the monthly amount needs to be higher or rise faster, but 20 to 25 years is still a long time for compounding. A step-up SIP helps most.
What could your SIP grow to?
Try your amount, a step-up and a cautious return, and see the value in today’s money.
Open the SIP calculator →Returns of 12% a year and inflation of 6% are assumptions for illustration. Returns are not guaranteed and this is not investment advice. Values are before tax unless stated; tax uses the equity rules in the SIP calculator.