What is a step-up SIP?
With a regular SIP, you invest the same amount every month for years. But your income usually does not stay the same: most people get raises, bonuses or promotions. A step-up SIP increases your monthly investment by a fixed percentage every year, so your savings keep pace with your earnings.
For example, with a 10% step-up, a ₹10,000 SIP becomes ₹11,000 in the second year, ₹12,100 in the third year and so on. Each increase is small enough to be comfortable, but together they make a very large difference.
How to use this calculator
- Starting monthly SIP: what you invest every month in the first year.
- Annual step-up: the percentage by which you raise the SIP every 12 months.
- Expected return: the average yearly return you expect from the fund.
- Time period: the number of years you will invest.
The results show your total investment, estimated gains and final value. The highlighted note compares the result with a regular SIP of the same starting amount, so you can see exactly what the step-up adds.
How a step-up SIP is calculated
The calculator works month by month. Each month's instalment is added to the balance and the whole balance grows by the monthly rate that compounds to the expected annual return. After every 12 months the instalment is raised by the step-up percentage:
where P is the starting SIP and s is the yearly step-up rate. The balance compounds every month.
Worked example
Start a ₹10,000 SIP, step it up by 10% every year and invest for 15 years at an expected 12% a year. You invest a total of about ₹38.1 lakh, and the final value is about ₹82.7 lakh. A regular ₹10,000 SIP over the same 15 years would reach about ₹47.6 lakh, so the step-up adds more than ₹35 lakh.
Regular SIP vs step-up SIP
₹10,000 starting SIP, 12% expected return, 15 years:
| Yearly step-up | Total invested | Estimated value |
|---|---|---|
| 0% (regular SIP) | ₹18,00,000 | ₹47,59,314 |
| 5% | ₹25,89,428 | ₹61,91,091 |
| 10% | ₹38,12,698 | ₹82,74,718 |
| 15% | ₹57,09,649 | ₹1,13,34,505 |
When a step-up SIP makes sense
- Early in your career, when you can only spare a small amount now but expect your salary to grow. The salary calculator shows how much of a raise reaches your bank account.
- For long-term goals like retirement, where inflation raises the amount you need every year.
- If you tend to spend raises, since an automatic step-up saves part of each raise before you notice it.
Keep the step-up realistic. If your income does not grow as planned, a high step-up can strain your budget, and stopping SIPs midway hurts more than a smaller, steady increase. You can compare with a flat plan on the SIP calculator.
Frequently asked questions
What is a step-up SIP?
A step-up SIP (also called a top-up SIP) is a SIP whose monthly amount increases automatically at a fixed interval, usually once a year, by a set percentage or amount. It lets your investments grow along with your income.
How much should I step up my SIP every year?
A common choice is 5–10% a year, roughly in line with salary increments. Even a 5% annual step-up makes a large difference over 15 years or more.
Do all mutual funds offer a step-up option?
Most large fund houses and investment platforms offer a top-up or step-up facility when you register a SIP. If yours does not, you can start an additional SIP each year to get the same effect.
How does this calculator apply the step-up?
The monthly amount stays the same for 12 months, then increases by the step-up percentage at the start of every new year. All instalments are assumed to be invested at the start of each month.
Is a step-up SIP better than a higher fixed SIP?
If you can afford a higher amount today, investing it early earns more because it compounds for longer. A step-up SIP is useful when your current budget is limited but you expect your income to grow.
Sources
- AMFI – Association of Mutual Funds in India (investor corner)
- SEBI – Securities and Exchange Board of India
Last updated 19 September 2026. Results are estimates for planning only and are not investment, tax or legal advice. See our disclaimer.