Step-Up SIP Calculator
Project the corpus from a step up SIP that increases each year. See how an annual top up of 5 to 15 percent transforms a long term mutual fund plan in India.
A step up SIP is a regular SIP with one important addition. Every year, on the anniversary of the first installment, your monthly contribution increases by a fixed percentage. The idea is simple. Your salary grows, so your monthly investment should grow with it. Over a 20 to 25 year horizon, the difference between a flat SIP and a step up SIP is rarely small. The step up version often ends up with 50 to 80 percent more corpus, with the only difference being a hike that roughly tracks your annual increment.
Inputs
Year-by-year breakdown
| Year | Monthly SIP | Invested | Value | Gain |
|---|---|---|---|---|
| 1 | ₹20,000 | ₹2,40,000 | ₹2,53,650 | ₹13,650 |
| 2 | ₹22,000 | ₹5,04,000 | ₹5,64,834 | ₹60,834 |
| 3 | ₹24,200 | ₹7,94,400 | ₹9,43,386 | ₹1,48,986 |
| 4 | ₹26,620 | ₹11,13,840 | ₹14,00,639 | ₹2,86,799 |
| 5 | ₹29,282 | ₹14,65,224 | ₹19,49,644 | ₹4,84,420 |
| 6 | ₹32,210 | ₹18,51,746 | ₹26,05,414 | ₹7,53,668 |
| 7 | ₹35,431 | ₹22,76,921 | ₹33,85,202 | ₹11,08,281 |
| 8 | ₹38,974 | ₹27,44,613 | ₹43,08,823 | ₹15,64,210 |
| 9 | ₹42,872 | ₹32,59,074 | ₹53,99,011 | ₹21,39,936 |
| 10 | ₹47,159 | ₹38,24,982 | ₹66,81,834 | ₹28,56,852 |
| 11 | ₹51,875 | ₹44,47,480 | ₹81,87,161 | ₹37,39,681 |
| 12 | ₹57,062 | ₹51,32,228 | ₹99,49,191 | ₹48,16,963 |
| 13 | ₹62,769 | ₹58,85,451 | ₹1,20,07,060 | ₹61,21,609 |
| 14 | ₹69,045 | ₹67,13,996 | ₹1,44,05,525 | ₹76,91,529 |
| 15 | ₹75,950 | ₹76,25,396 | ₹1,71,95,741 | ₹95,70,346 |
| 16 | ₹83,545 | ₹86,27,935 | ₹2,04,36,151 | ₹1,18,08,216 |
| 17 | ₹91,899 | ₹97,30,729 | ₹2,41,93,482 | ₹1,44,62,753 |
| 18 | ₹1,01,089 | ₹1,09,43,802 | ₹2,85,43,888 | ₹1,76,00,086 |
| 19 | ₹1,11,198 | ₹1,22,78,182 | ₹3,35,74,240 | ₹2,12,96,059 |
| 20 | ₹1,22,318 | ₹1,37,46,000 | ₹3,93,83,595 | ₹2,56,37,595 |
Why use the Step-Up SIP Calculator
Most online SIP calculators force a single fixed monthly amount and ignore the natural growth of income. That assumption is wrong for almost every salaried Indian investor. A 25 year old earning ₹50,000 a month is not going to be earning the same in their forties. If their SIP stays at ₹5,000 the entire time, the contribution is meaningful early on and trivial later. The step up SIP calculator lets you model what happens when the contribution grows alongside the salary, which is what actually happens in most households once auto debits are wired up to a percentage of CTC rather than a flat number.
Benefits at a glance
Match your SIP to your salary curve
A 10 percent annual step up roughly mirrors typical Indian wage growth across most industries. The calculator shows what your future self would invest if you treat investing as a fixed share of income rather than a fixed rupee amount.
See the real cost of staying flat
Toggle between zero step up and 10 percent step up at the same starting amount and horizon. The corpus gap is usually 50 to 100 percent over 25 years. That gap is the price of not increasing the SIP each year.
Iterative monthly compounding
Unlike rough rule of thumb formulas, the calculator computes month by month. The step up takes effect on the right anniversary, the new contribution compounds for the remaining horizon, and the year by year breakdown lets you audit the maths.
Plan an annual hike with intent
If your salary increment lands in April, set a calendar reminder to raise your SIP in May. Use the calculator to choose a step up size that feels meaningful but does not strain your monthly budget.
How to use the Step-Up SIP Calculator
- 1
Enter your starting monthly SIP
Use the contribution you can afford today. Treat this as the floor, not the ceiling. The step up calculator will lift it automatically each year.
- 2
Set the annual step up percentage
Five percent is a conservative top up, suitable if your income growth has been modest. Ten percent matches average Indian salary hikes. Fifteen percent is aggressive and works best if you expect promotions or job changes.
- 3
Pick the expected return and horizon
Twelve percent is a sensible long term assumption for an equity SIP in India. Set the horizon to your investment goal. Retirement at 60 from age 30 means a 30 year horizon. A child's education in 18 years means an 18 year horizon.
- 4
Compare against a flat SIP
Set the step up back to zero and note the corpus. Then set it to 10 percent and look at the new corpus. The difference is the value of the discipline of raising contributions each year.
Frequently asked questions
What is a step up SIP?
A step up SIP is a SIP where the monthly contribution increases by a fixed percentage at the start of each year. The percentage is fixed by you when you set up the SIP. Most fund houses offer step up as a built in feature on their SIP registration page, with options for fixed rupee top ups (₹500 a year) or percentage top ups (10 percent a year). This calculator uses percentage step ups.
Why does a step up SIP grow so much faster than a flat SIP?
Two effects compound. First, you put in more money each year. Second, the additional money has more years to grow. A ₹10,000 SIP at 12 percent for 25 years grows to roughly ₹1.9 crore. The same SIP with a 10 percent annual step up grows to roughly ₹4.8 crore, which is 2.5 times the flat figure. The step up uses your salary growth as a built in inflation hedge.
What step up percentage should I choose?
If your salary typically grows by 10 percent a year, a 10 percent step up keeps the SIP at a constant share of income. If you expect to outperform the average through promotions or job changes, set 12 to 15 percent. If your income is flat or you are between jobs, start with 5 percent. The percentage can be revised any time by stopping the existing SIP and registering a new one.
Can I do step up SIPs in any mutual fund?
Yes. All major Indian AMCs support step up or top up SIPs. The exact label varies, with HDFC, ICICI, Axis, SBI and Mirae all calling it slightly different names. Some platforms allow a fixed rupee top up, others allow a percentage, and a few allow both. Check the SIP registration page of your fund or use a third party platform like Groww, Zerodha Coin or Kuvera which offer percentage step ups across all funds.
Is a step up SIP riskier than a flat SIP?
Not in any meaningful sense. The investment style and the underlying fund are unchanged. The only difference is that you contribute more rupees over time, which means you are exposed to slightly more equity. The risk per rupee invested is identical. The bigger psychological risk is forgetting that you have agreed to higher contributions in future years, so plan the cash flow ahead.
Can I stop a step up SIP if my income falls?
Yes. Stopping or pausing a SIP is a single click on any major platform. You can also revise the step up percentage by cancelling the existing mandate and registering a new one with a smaller top up. There are no penalties or exit loads for stopping a SIP, only the standard exit load on units sold within the holding period.
How is step up SIP taxed?
Each installment, including the increased ones, is treated as a separate purchase under standard mutual fund tax rules. Long term capital gains in equity funds are taxed at 12.5 percent above ₹1,25,000 of gains in a year, and short term gains at 20 percent, as of FY 2025 to 2026. The step up has no special tax treatment.
Final word
A step up SIP is the closest most salaried Indians come to a free corpus boost. The mechanics are unchanged, the cash flow tracks your income, and the long term effect is large enough to materially shift retirement outcomes. Run the calculator at your current SIP, then run it again with a 10 percent step up. If the second number is closer to your goal, set up the top up the next time you renew or revise the mandate.
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