The target in numbers
At an assumed 12% annual return, here's the monthly SIP needed to reach ₹1 crore:
| Time horizon | Monthly SIP needed |
|---|---|
| 10 years | ₹43,041 |
| 15 years | ₹19,819 |
| 20 years | ₹10,009 |
| 25 years | ₹5,270 |
| 30 years | ₹2,833 |
The pattern is the whole story here: doubling your time horizon from 15 to 30 years doesn't just halve the required SIP — it cuts it by roughly 86%, from ₹19,819 to ₹2,833. That's compounding doing most of the work in the later years, not your monthly contribution.
Calculation assumptions for the table above:
- Return: 12% p.a., compounded monthly, instalment invested at the start of each month
- Contribution: flat monthly SIP, no step-up
- Taxes and fund charges: excluded
- Actual investment returns will vary and are not guaranteed
The levers that change the required SIP
| Lever | Effect on required SIP |
|---|---|
| More time | Usually lowers the monthly requirement sharply. |
| Higher starting SIP | Reduces reliance on future returns. |
| Annual step-up | Lets contributions rise with income. |
| Lower return assumption | Creates a more conservative funding test. |
Why the required amount drops so fast with more time
A SIP's final value comes from two sources: the money you actually put in, and the returns that money earns along the way. Over a short horizon, your own contributions still make up most of the final number. Over a long horizon, the earlier instalments have had 20-30 years to compound, so a much smaller monthly amount snowballs into the same ₹1 crore target.
This is why "start early" isn't just generic advice — it's the specific mechanism that makes a ₹2,833 monthly SIP (30 years) end up in the same place as a ₹43,041 monthly SIP (10 years), a roughly 15x difference in monthly outlay for the same final number.
How sensitive is this to your return assumption?
The ₹1 crore figures above all assume a 12% annual return, which is just that — an assumption, not a guarantee. Here's how the required SIP for a 15-year horizon changes across a realistic range of assumed returns:
| Assumed annual return | Monthly SIP needed (15 years) |
|---|---|
| 8% | ₹28,707 |
| 10% | ₹23,928 |
| 12% | ₹19,819 |
| 14% | ₹16,317 |
| 16% | ₹13,359 |
The gap between the 8% and 16% scenarios is more than double the required contribution — which is exactly why it's worth testing a conservative, moderate and optimistic rate for your own plan rather than anchoring on a single number a fund's marketing happens to highlight.
Worked example: what a round-number SIP actually gets you
Rather than working backward from ₹1 crore, take a common round number and see where it actually lands. A ₹15,000 monthly SIP at an assumed 12% return crosses ₹1 crore at month 204 — 17 years — reaching approximately ₹1,00,18,812 at that point. If your own monthly budget is a fixed number rather than a target corpus, this is often the more useful way to frame the question: not "how much do I need," but "how long will my number take."
A step-up SIP can close the gap without a bigger starting contribution
The figures above all assume a flat, unchanging monthly SIP. In practice, most people's income — and therefore their capacity to save — grows over time. Stepping up your SIP by 10% every year changes the maths meaningfully: instead of needing ₹19,819/month flat to reach ₹1 crore in 15 years, a starting SIP of just ₹12,000/month with a 10% annual step-up reaches roughly ₹1,04,20,619 in the same period — a 39% lower starting commitment for essentially the same outcome.
What changes the required SIP
A few things the table above can't capture for your specific situation:
- Your real, personal return assumption. Equity mutual fund category, market conditions, and fund selection all affect what return is realistic for you — 12% is a commonly used planning assumption, not a promise.
- Whether you increase your SIP over time. As shown above, even a modest annual step-up meaningfully reduces the starting contribution needed.
- Inflation eating into what ₹1 crore is actually worth by the time you reach it. ₹1 crore today and ₹1 crore in 20 years buy very different amounts — worth checking separately.
- Taxes on withdrawal, which aren't reflected in any of the projected figures above, since they depend on your holding period and applicable capital gains rules at the time you redeem.
Where ₹1 crore plans go wrong
If you're weighing this against a single lumpsum instead — say, from a bonus or maturity payout — SIP vs lumpsum works through that comparison directly, including what a market downturn right after investing actually does to each. And if ₹10,000 a month happens to be closer to your actual budget than the figures above, ₹10,000 SIP for 10, 20 and 30 years shows exactly where that specific amount lands.
Treating 12% as guaranteed rather than assumed. No calculator, including ours, can tell you what a fund will actually return — only what a given assumption implies.
Ignoring what ₹1 crore will actually buy by the time you reach it. A 20-year target of ₹1 crore has meaningfully less real purchasing power than ₹1 crore today, once inflation is accounted for.
Picking a single scenario and treating it as the plan. The sensitivity table above shows why testing a range — not just one number — gives a more honest picture of what you're actually planning for.
Turn the target into your own contribution
Enter your own monthly amount, an assumed return, and your investment period — the calculator shows the projected maturity value instantly, along with a year-wise breakdown. To work backward from a target (like ₹1 crore) to the required monthly SIP, adjust the monthly amount until the maturity value matches your target, or use the figures in the table above as a starting reference point for your own timeframe.
If you're planning toward a specific retirement corpus rather than a round number like ₹1 crore, the Retirement Calculator accounts for your current age, expected expenses, and inflation together, which a flat SIP target doesn't.
Frequently asked questions
Is 12% a realistic return to assume for this calculation?
It depends on the fund category and time period — equity funds have delivered both well above and well below 12% across different multi-year stretches historically. The sensitivity table above shows a realistic range rather than relying on one figure.
How much SIP do I need for ₹1 crore in exactly 20 years?
At an assumed 12% annual return, approximately ₹10,009 per month, assuming a flat (non-increasing) SIP for the full 20 years.
Does a step-up SIP always let me start with a lower monthly amount for the same target?
Yes, for any step-up rate above 0% — since more money arrives later at a lower starting base but grows to a similar or higher total, given the same number of years to compound.
Should I include existing investments when calculating what SIP I still need?
Yes — if you already have savings or investments earmarked for the same goal, project their own growth separately and only calculate the SIP needed to cover the remaining gap, rather than the full ₹1 crore target.
Is ₹1 crore actually enough for retirement?
That depends entirely on your expected expenses, how many years you'll draw on it, and inflation between now and retirement — a round number like ₹1 crore isn't inherently a "correct" retirement target for everyone. The Retirement Calculator accounts for these factors directly rather than working backward from a fixed figure.