Step-Up SIP Calculator
Raise your SIP by a fixed percentage every year and see how far ahead of a flat SIP you finish.
Reviewed by Ashutosh Joshi, PGDM (Finance) · Updated Oct 2026 · How we calculate
Key highlights
- ₹10,000 a month, raised 10% every year, for 15 years at 12% grows to about ₹86.8 lakh. A flat ₹10,000 SIP gets about ₹50.5 lakh.
- To match the step-up result with a flat SIP, you’d need about ₹17,210 a month from day one.
- Be honest about why it wins: you also invest more, about ₹38.1 lakh against ₹18 lakh.
- A step-up that tracks your increments keeps your savings rate from quietly falling as you earn more.
Corpus at maturity
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Instalment rises once every twelve months. Returns compounded monthly. A projection based on a constant assumed rate, not a forecast.
Invested vs gains with step-up, year by year
Show year-wise table
What a step-up SIP is
A step-up SIP (fund houses also call it a top-up SIP) raises your monthly instalment automatically once a year, by a percentage or a fixed rupee amount you choose at the start. You start at ₹10,000. Next year it's ₹11,000, then ₹12,100, and so on.
I like this setup for salaried people because it copies how income actually behaves. Your salary goes up most years; a flat SIP doesn't. If you earn ₹80,000 a month and invest ₹10,000, that's 12.5% of your pay. Ten years and a few increments later, the same ₹10,000 might be 6% of your pay. Nothing went wrong, but your savings rate halved without you deciding to do it. The regular SIP calculator shows that flat path; this one shows what happens when the SIP keeps pace with you.
How it is calculated
There's no neat one-line formula here, because the instalment changes each year. The calculator treats each year as its own 12-month SIP and then lets that year's corpus keep growing to the end:
Year k SIP = P × (1 + g)k−1 · Value = Σ [ SIPk × 12-month SIP factor ] × (1 + r)12 × (N − k)P = starting SIP · g = yearly step-up · r = annual return ÷ 12 · N = total years
In plain words: every month's money grows from the month it goes in, at the same monthly rate, and each new year's instalment is g% higher than the last.
Worked example: ₹10,000 with a 10% step-up
Ankit, 28, a software engineer in Bengaluru, starts at ₹10,000 a month and sets a 10% annual step-up. He assumes 12% a year for 15 years.
- Year 1: ₹10,000 a month. Year 2: ₹11,000. Year 5: ₹14,641. Year 15: about ₹37,975.
- Total invested over 15 years: about ₹38.13 lakh
- Estimated value at 12%: about ₹86.84 lakh
A flat ₹10,000 SIP over the same 15 years ends near ₹50.46 lakh. So the step-up adds roughly ₹36 lakh. Run it for 20 years and the step-up plan crosses ₹1.98 crore. We broke down the flat version of this in what a ₹10,000 monthly SIP can build.
| ₹10,000 start, 15 yrs, 12% | Total invested | Estimated value |
|---|---|---|
| No step-up | ₹18.0 lakh | ₹50.5 lakh |
| 5% a year | ₹25.9 lakh | ₹65.3 lakh |
| 10% a year | ₹38.1 lakh | ₹86.8 lakh |
| 15% a year | ₹57.1 lakh | ₹1.18 crore |
Be clear about where the extra money comes from
Some websites present step-up SIPs as if they were a cleverer kind of compounding. They aren't. Most of the extra corpus comes from the fact that you invest more: ₹38 lakh against ₹18 lakh in the example. The money you add in later years also gets less time to grow than the early instalments.
That doesn't make it a gimmick. It makes it a discipline tool. The fair comparison is with a flat SIP that invests the same total. A flat SIP that starts at about ₹17,210 a month would match Ankit's ₹86.8 lakh, and most 28-year-olds can't commit ₹17,000 on day one. A step-up lets him reach the same place starting from what he can afford now. That matters, because the AMFI SIP stoppage ratio suggests plans more often fail at the start than at the finish.
I step up my own SIPs by 10% every year. Ten percent is close to a normal salaried increment, so the higher instalment comes out of the raise rather than out of the month's spending, and my savings rate stays where I set it instead of drifting down. The sensible moment to change it is the month the increment lands, before the extra money gets absorbed into lifestyle.
Year by year: flat vs 10% step-up
Ankit's plan, side by side with a flat ₹10,000 SIP. The gap stays small for the first five years and then opens up quickly.
| Year | Flat SIP | Flat value | 10% step-up SIP | Step-up invested | Step-up value |
|---|---|---|---|---|---|
| 1 | ₹10,000 | ₹1,28,093 | ₹10,000 | ₹1,20,000 | ₹1,28,093 |
| 5 | ₹10,000 | ₹8,24,864 | ₹14,641 | ₹7,32,612 | ₹9,84,570 |
| 10 | ₹10,000 | ₹23,23,391 | ₹23,579 | ₹19,12,491 | ₹33,74,326 |
| 15 | ₹10,000 | ₹50,45,760 | ₹37,975 | ₹38,12,698 | ₹86,83,849 |
Percentage or a fixed rupee step-up?
Most fund houses let you choose. HDFC Mutual Fund, for example, offers both a fixed amount and a percentage top-up. A fixed ₹1,000 a year is gentler: over 15 years at 12% it invests ₹30.6 L and grows to about ₹75.1 L, ending at ₹24,000 a month. A 10% step-up invests ₹38.1 L and reaches ₹86.8 L, ending at ₹37,975. The percentage version keeps pace with your income as it grows; the fixed version gets relatively smaller every year. If your pay is unpredictable, start with a fixed amount.
Put a ceiling on it
An uncapped 10% step-up doubles your instalment roughly every seven years, and eventually it collides with a home loan EMI or school fees. Many AMCs let you set a top-up cap. With a ₹25,000 ceiling, the same ₹10,000 start invests ₹49.1 L over 20 years and grows to about ₹1.69 Cr, against ₹1.99 Cr uncapped. You lose some corpus, but you get a plan you won't cancel. Before you take on a loan, model the EMI side with the home loan EMI calculator.
Choosing the step-up percentage
Match it to your realistic pay rise, not your best year. For most salaried people in India that's 5–10%. If your increments are uneven, pick 5% and do a manual top-up in the good years. If you'd rather hold the money in something guaranteed, compare against a recurring deposit, which accepts the same monthly discipline at a fixed rate. Above 15% looks great in the table but tends to get cancelled by year four or five, when the instalment starts competing with an EMI or school fees.
Limits of this calculator
- Constant return assumed. Real returns jump around; the order of good and bad years matters.
- Step-up happens on the SIP anniversary, not the month your salary changes. Close enough for planning.
- Pre-tax figures. Equity LTCG at 12.5% above ₹1.25 lakh a year applies when you redeem.
- Not every platform supports percentage step-ups for every fund. Some only allow fixed-rupee top-ups. Check before you rely on it.
If you have a fixed target in mind, work out the monthly figure with the goal-based SIP calculator first, then come back here to see whether a step-up gets you there with a lower starting SIP. Every tool we've built is in the Diving Finance calculators hub.
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Frequently asked questions
What is a step-up SIP?
A SIP whose monthly amount rises automatically once a year by a percentage or fixed amount you choose, for example 10% a year. It is also called a top-up SIP.
Is a step-up SIP better than a normal SIP?
It builds a bigger corpus mainly because you invest more over time. ₹10,000 with a 10% yearly step-up for 15 years at 12% reaches about ₹86.8 lakh, against about ₹50.5 lakh for a flat ₹10,000 SIP.
What step-up percentage should I choose?
Roughly your expected annual salary hike, usually 5–10%. A rate you can sustain beats a higher rate you cancel after a few years.
Can I pause or stop the step-up?
Yes. You can cancel the SIP and start a new one at the current amount, or reduce the top-up. Your existing units stay invested.
How is step-up SIP return calculated?
Each year's monthly instalment is P × (1 + g)^(year − 1). Each instalment is compounded monthly at r = annual return ÷ 12 until the end of the tenure, and all of them are added up.
Can I add a step-up to an existing SIP?
Depends on the fund house. Some let you modify the SIP online; others, such as SBI Mutual Fund, require you to cancel it and register a fresh SIP with the top-up option. Your units already bought stay invested either way.
Is there a minimum top-up amount?
Usually yes. SBI Mutual Fund, for example, sets the top-up at a minimum of ₹500 and in multiples of ₹500. Check your AMC or platform's rules when you set up the mandate.
Should I choose a fixed amount or a percentage step-up?
A percentage step-up tracks salary growth and builds a bigger corpus: ₹10,000 with 10% a year reaches about ₹86.84 lakh in 15 years at 12%, against about ₹75.09 lakh with a fixed ₹1,000 a year. Pick a fixed amount if your income is irregular.
Results are estimates based on the inputs you enter and the formulas shown above. They are not guaranteed returns, an offer, or personal investment, tax or loan advice. Rates quoted were checked on 20 Oct 2026 and can change; confirm with the bank, fund house or India Post before you act. See our disclaimer and editorial policy.