Quick Answer: To reach ₹1 crore in 15 years at 12% expected return, you need a monthly SIP of approximately ₹20,000. To reach ₹1 crore in 20 years at the same return rate, you need just ₹10,000/month. Starting 5 years earlier saves you ₹10,000 per month.
₹1 crore sounds impossible. The math makes it very possible.
₹1 crore. The number that sits in the back of every Indian investor's head.
Some people buy lottery tickets chasing it. Some people rely on "investment tips" from cousins at weddings. And then there are the people who just set up a SIP and let compounding do the heavy lifting.
Let me show you exactly what it takes.
The Crorepati SIP Table
This is the number you need to see. Monthly SIP required to reach ₹1 crore:
| Time Horizon | At 10% Return | At 12% Return | At 15% Return |
|---|---|---|---|
| 10 years | ₹48,417/month | ₹43,066/month | ₹35,012/month |
| 15 years | ₹26,085/month | ₹20,017/month | ₹13,493/month |
| 20 years | ₹15,743/month | ₹10,091/month | ₹5,769/month |
| 25 years | ₹10,168/month | ₹5,323/month | ₹2,407/month |
| 30 years | ₹6,678/month | ₹2,861/month | ₹992/month |
Interactive Mini SIP Calculator | |||
The column you should stare at: 20 years at 12% = ₹10,091/month.*
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Why Starting Late Is So Expensive | |||
| Look at what a 5-year delay costs: | |||
| Start Age | Monthly SIP | Retire at | Final Corpus (12%) |
| ----------- | ----------- | ----------- | ------------------- |
| 25 | ₹10,091 | 60 (35 yrs) | ₹4.96 crore |
| 30 | ₹10,091 | 60 (30 yrs) | ₹2.87 crore |
| 35 | ₹10,091 | 60 (25 yrs) | ₹1.63 crore |
| 40 | ₹10,091 | 60 (20 yrs) | ₹91.2 lakhs |
| Starting at 25 instead of 40 — with the same ₹10,091/month — results in a corpus that's 5.4 times larger. The money invested is only 1.75 times more. That extra 2.75x comes purely from the extra compounding years. | |||
| If you're 35 reading this: you haven't missed the boat. But you'll need a larger monthly SIP or a step-up plan. | |||
The Step-Up Crorepati Route (More Realistic for Most People) | |||
| Not everyone can commit ₹20,000/month at age 25. But most people can commit ₹5,000 and increase it over time. | |||
| Here's a step-up plan to reach ₹1 crore in 20 years, starting at ₹5,000: | |||
| Year | Monthly SIP | Annual Step-Up | |
| ------ | ----------- | --------------- | |
| Year 1 | ₹5,000 | Start | |
| Year 5 | ₹7,500 | +10% yearly | |
| Year 10 | ₹12,000 | +10% yearly | |
| Year 15 | ₹19,000 | +10% yearly | |
| Year 20 | ₹30,000 | +10% yearly | |
| Corpus | ~₹1.08 crore** |
You doubled your money... and the market added ₹35 lakhs more on top.
What ₹1 Crore Actually Means in 20 Years
Here's the nuance no one talks about: ₹1 crore in 2045 is not the same as ₹1 crore today. Assuming 5% average inflation, ₹1 crore in 20 years has the purchasing power of roughly ₹37.7 lakhs today.
That's still meaningful — but if you're building a retirement corpus, you probably want to target ₹2–3 crore in nominal terms. The step-up plan above already puts you at ₹1 crore; increase the starting SIP to ₹10,000 and you'll likely cross ₹2 crore.
The Psychological Trick That Actually Works
Here's what I find most people get wrong about the crorepati journey: they think it requires discipline. It doesn't. It requires automation.
Set up an auto-debit SIP. Set a calendar reminder to increase it by ₹1,000 or 10% every April (after your appraisal). Ignore the portfolio for 6 months at a time. That's the whole strategy.
The discipline part takes care of itself once the system runs automatically.
Key Takeaways
- ₹10,000/month at 12% for 20 years = ~₹1 crore. That's the target for most Indian families.
- Starting 5 years earlier is worth more than doubling your SIP amount — time beats money.
- A 10% annual step-up from ₹5,000 reaches ₹1 crore in 20 years with less monthly pressure.
- ₹1 crore in 2045 = ~₹38 lakhs in today's money. Target ₹2–3 crore for real retirement security.
Frequently Asked Questions
At 12% expected return, you need approximately ₹43,066 per month. This is aggressive — suitable for high earners with a specific 10-year goal like a down payment on a large property.
Yes, if you stay invested long enough. ₹10,000/month at 12% for 20 years reaches approximately ₹1 crore. ₹5,000/month with 10% annual step-up also reaches ₹1 crore in ~20 years.
A combination of Nifty 50 index fund (60%) + Nifty Midcap 150 index fund (40%) has historically outperformed a single large-cap fund over 15–20 year horizons.
Over 15–20 year periods, Nifty 50 TRI has historically delivered 12–13% CAGR. This is not guaranteed — use 10% for conservative planning and 12% as the base case.