A step-up SIP is a monthly SIP that you raise by a fixed percentage once a year, usually in line with your salary. It is one of the simplest ways to build a bigger corpus, because your investing keeps pace with your income instead of staying stuck at the amount you could afford in your first job.
An earlier version of this article claimed that ₹2,000 a month with a 10% yearly step-up grows to ₹2.17 crore in 25 years. That was wrong. At a 12% annual return, it grows to about ₹78.7 lakh. This version shows the correct maths, states every assumption, and explains what it actually takes to reach ₹2 crore.
The Short Answer
- ₹2,000 a month, raised 10% every year, for 25 years at 12% a year: you invest ₹23.6 lakh and end with about ₹78.7 lakh.
- A flat ₹2,000 a month for the same 25 years: you invest ₹6.0 lakh and end with about ₹34.0 lakh.
- To reach ₹2 crore in 25 years with a 10% step-up at 12%, you need to start at about ₹5,100 a month. Over 30 years, a start of about ₹2,500 a month gets there.
You can check any of these numbers on our step-up SIP calculator, which uses the same method described below.
Assumptions Behind Every Number Here
SIP projections differ between websites mainly because of small conventions. These are the ones used throughout this article:
- Starting SIP: ₹2,000 a month.
- Step-up: the monthly amount rises once every 12 months (₹2,000 in year 1, ₹2,200 in year 2, ₹2,420 in year 3, and so on).
- Return: 12% a year, constant. Real returns are never constant; this is a planning assumption, not a forecast.
- Monthly rate: the effective monthly rate, 1.12 raised to the power 1/12, minus 1, which is about 0.949% a month. This compounds to exactly 12% over a year.
- Timing: each instalment is invested at the start of the month (an annuity-due), so every instalment earns a full month of return.
- Tenure: 25 years, or 300 instalments.
- Not included: tax, exit loads and inflation. Fund expenses are assumed to be already inside the 12% net return.
Some calculators instead divide 12% by 12 and compound at 1% a month. That is an effective annual return of about 12.68%, which is why it gives a larger answer: about ₹85.5 lakh for the same step-up SIP. Neither is "wrong", but you should compare like with like.
How the Monthly SIP Grows With a 10% Step-Up
| Year | Monthly SIP | Invested that year |
|---|---|---|
| 1 | ₹2,000 | ₹24,000 |
| 2 | ₹2,200 | ₹26,400 |
| 3 | ₹2,420 | ₹29,040 |
| 5 | ₹2,928 | ₹35,138 |
| 10 | ₹4,716 | ₹56,591 |
| 15 | ₹7,595 | ₹91,140 |
| 20 | ₹12,232 | ₹1,46,782 |
| 25 | ₹19,699 | ₹2,36,394 |
The year-25 instalment is about ten times the first one. That is the real commitment behind a 10% step-up: it only works if your income grows roughly as fast. If your pay rises 10% a year, a 10% step-up keeps the share of income you invest about constant. If your pay rises more slowly, the SIP slowly eats a larger share of it.
Flat SIP vs Step-Up SIP: 25 Years at 12%
| Annual step-up | Total invested | Corpus after 25 years | Corpus ÷ invested |
|---|---|---|---|
| 0% (flat ₹2,000) | ₹6.0 lakh | ₹34.0 lakh | 5.7× |
| 5% | ₹11.5 lakh | ₹49.7 lakh | 4.3× |
| 8% | ₹17.5 lakh | ₹64.8 lakh | 3.7× |
| 10% | ₹23.6 lakh | ₹78.7 lakh | 3.3× |
| 12% | ₹32.0 lakh | ₹96.9 lakh | 3.0× |
| 15% | ₹51.1 lakh | ₹1.35 crore | 2.6× |
Two things stand out.
- The step-up roughly doubles the outcome. A 10% step-up ends with 2.3 times the flat SIP's corpus.
- It does this mostly by investing more, not by compounding harder. The 10% step-up invests 3.9 times as much money as the flat SIP. Each rupee grows less on average (3.3× vs 5.7×), because the biggest instalments go in during the final years and have little time to compound.
That is not a flaw. It is simply what a step-up SIP is: a disciplined way to invest more as you earn more. For a flat SIP of any amount, our SIP calculator uses the same monthly convention.
What If Returns Are Lower or Higher?
The return assumption moves the result more than anything else. Same ₹2,000 start, 25 years:
| Annual return | Flat ₹2,000 | With 10% step-up |
|---|---|---|
| 8% | ₹18.3 lakh | ₹49.9 lakh |
| 10% | ₹24.9 lakh | ₹62.3 lakh |
| 12% | ₹34.0 lakh | ₹78.7 lakh |
| 14% | ₹46.9 lakh | ₹1.01 crore |
Equity returns are not guaranteed, and recent years show why you should plan with a range. Nifty 50 index funds returned only about 6% a year over the five years to 28 September 2026, based on AMFI NAV data. Use a conservative rate for goals that matter, and treat anything above it as a bonus.
How Long You Stay Invested Matters Most
| Years | Flat ₹2,000: invested / corpus | 10% step-up: invested / corpus |
|---|---|---|
| 10 | ₹2.4 lakh / ₹4.5 lakh | ₹3.8 lakh / ₹6.5 lakh |
| 15 | ₹3.6 lakh / ₹9.5 lakh | ₹7.6 lakh / ₹16.5 lakh |
| 20 | ₹4.8 lakh / ₹18.4 lakh | ₹13.7 lakh / ₹37.3 lakh |
| 25 | ₹6.0 lakh / ₹34.0 lakh | ₹23.6 lakh / ₹78.7 lakh |
| 30 | ₹7.2 lakh / ₹61.6 lakh | ₹39.5 lakh / ₹1.60 crore |
The last five years add more than the first fifteen combined. Going from 25 to 30 years takes the step-up SIP from ₹78.7 lakh to ₹1.60 crore. This is the same effect explained in our post on the SIP crossover point.
What It Actually Takes to Reach ₹2 Crore
Because the maths is linear in the starting amount, you can scale the results directly. With a 10% yearly step-up and a 12% return:
- In 25 years: start at about ₹5,100 a month (₹5,082 exactly).
- In 30 years: start at about ₹2,500 a month (₹2,504 exactly).
In other words, ₹2,000 a month can reach roughly ₹2 crore, but it needs close to 30 years, not 25, even at a steady 12%. If you want a broader view of the monthly SIP each target needs, see how much SIP it takes to become a crorepati and how much SIP per month you need.
What Small Slips Cost (Recomputed)
Using the same base case (₹2,000 start, 10% step-up, 12%, 25 years, ₹78.7 lakh):
- Skip just the first step-up (stay at ₹2,000 for two years, then step up 10% a year as planned): the corpus falls to about ₹71.9 lakh, roughly ₹6.8 lakh less. Every later instalment is 10% smaller.
- Start five years later (20 years instead of 25): about ₹37.3 lakh, roughly ₹41.4 lakh less.
- Earn 11% instead of 12%, for example because of a higher-cost fund: about ₹69.9 lakh, roughly ₹8.8 lakh less. Our post on direct vs regular mutual funds explains where such cost gaps come from.
Measuring Your Real Return: Use XIRR, Not CAGR
Once your step-up SIP is running, the money goes in on many dates in different amounts. A simple CAGR cannot measure that. The right measure is XIRR, which accounts for the date and size of every instalment. You can compute it with our XIRR calculator, and our explainer on XIRR vs CAGR shows why the two differ. Compare your XIRR with the return you assumed in your plan, and adjust the step-up if you are falling behind.
How Tax Affects the Final Number
The corpus figures above are before tax. For equity-oriented mutual funds sold on or after 23 July 2024, and continuing in tax year 2026-27:
- Short-term gains (units held 12 months or less): taxed at 20%.
- Long-term gains (held more than 12 months): taxed at 12.5% on gains above ₹1.25 lakh a year. From 1 April 2026 this is section 198 of the Income-tax Act, 2025 (old section 112A).
- Health and education cess of 4% applies on top.
Every SIP instalment has its own purchase date and holding period, so units bought in the last 12 months before you sell are short-term. Selling gradually over several years can let you use the ₹1.25 lakh yearly exemption more than once. If you are in the old tax regime, part of a step-up SIP can go into an ELSS fund, which qualifies for the ₹1.5 lakh deduction under section 123 (old 80C). That deduction does not exist in the new regime. More detail is in our mutual fund tax guide.
Setting Up a Step-Up SIP in Practice
- Pick a step-up you can sustain. Link it to your expected pay rise. A 5–8% step-up you keep for 25 years beats a 15% step-up you abandon after five.
- Automate it if you can. Check whether your fund house or platform offers a SIP top-up (step-up) option when you register the SIP. If it does not, set a yearly reminder to raise the amount yourself. Either way, make sure your bank mandate's maximum debit limit covers the larger instalments of later years.
- Step up by amount if percentages feel abstract. Adding a fixed ₹500 a year is gentler than 10% in later years. Model both on the step-up SIP calculator before you choose.
- Keep going through falls. SIP instalments made during a market fall buy more units. See whether to pause a SIP in a crash.
- Switching funds is a sale. Moving money between schemes, even within one fund house, is a redemption. Exit load and capital-gains tax can apply.
Key Takeaways
- ₹2,000 a month with a 10% yearly step-up builds about ₹78.7 lakh in 25 years at 12%, from ₹23.6 lakh invested.
- That is 2.3 times a flat ₹2,000 SIP, mainly because you invest almost four times as much.
- Reaching ₹2 crore needs a start of about ₹5,100 a month over 25 years, or about ₹2,500 a month over 30 years.
- Time and the return you actually earn matter more than the step-up rate. Plan with a conservative return and track your XIRR.
All figures are illustrative projections at a constant return, computed with the method stated above. They are not forecasts or advice. Market returns vary, and past returns do not guarantee future results.
