How Much Should You Invest Monthly to Retire With ₹5 Crore in 20 Years?
TL;DR: To reach ₹5 crore in 20 years, you'd need to invest roughly ₹50,000/month at a 12% assumed annual return, or about ₹41,000/month with a 10% annual step-up (increasing the SIP each year). The required amount is highly sensitive to your assumed return rate and, even more, to how many years you actually have — starting 5 years later doesn't cost you 25% more, it costs closer to 45% more.
The required monthly SIP at different return assumptions
| Assumed annual return | Required monthly SIP (flat, 20 years) |
|---|---|
| 8% | ≈ ₹84,000/month |
| 10% | ≈ ₹66,000/month |
| 12% | ≈ ₹50,000/month |
| 15% | ≈ ₹33,000/month |
The gap between 8% and 15% isn't small — it's the difference between needing ₹84,000/month and ₹33,000/month for the same target. This is exactly why the return assumption you use matters as much as the amount you invest, and why it's worth running a conservative case alongside your base case rather than anchoring on the most optimistic number.
What if you start 5 years later?
Starting the same ₹5 crore goal with only 15 years instead of 20 (at a 12% assumption) pushes the required monthly amount from ≈₹50,000 to ≈₹92,000 — an 84% increase for losing a quarter of your time horizon. Compounding rewards time disproportionately; delaying costs more than most people intuitively expect.
Does a step-up SIP change this?
Yes, meaningfully. A SIP that starts lower but increases 10% every year (matching typical salary growth) can reach the same ₹5 crore target starting around ₹41,000/month instead of a flat ₹50,000/month — because later, larger contributions compound for less time individually, but the total contributed is higher and the psychological entry barrier is lower.
Frequently asked
Is 12% a realistic return assumption?
It's a commonly used long-run assumption for diversified Indian equity mutual funds based on historical index performance, but it is not guaranteed — actual returns vary significantly year to year and can be negative for extended periods. Treat it as one scenario, not a promise.
Should I account for inflation?
Yes — ₹5 crore in 20 years will not have the same purchasing power as ₹5 crore today. At 6% inflation, ₹5 crore in 20 years is worth roughly ₹1.55 crore in today's money, which is worth factoring into whether ₹5 crore is actually the right target.
Calculate your own number
Use our SIP Calculator to run your own target, timeline, and return assumption — including the inflation-adjusted result and a conservative/base/optimistic scenario comparison.