Step-Up SIP Calculator

What is a step-up SIP?

A step-up SIP (also called a top-up SIP) is a systematic investment plan where you increase your monthly contribution by a fixed percentage or amount every year. Most people raise it in line with their annual salary increment. The idea is simple: as your income grows, so does your investment, without requiring a separate decision each year.

AMFI data shows that the average SIP amount in India has risen steadily, suggesting many investors already step up informally — a step-up SIP automates this.

How much more does a step-up SIP earn?

Significantly more. A ₹10,000 monthly SIP at 12% a year for 15 years grows to ₹50.5 lakh. The same SIP with a 10% annual step-up grows to ₹86.8 lakh — that is ₹36.3 lakh more, on ₹20.1 lakh more invested. The extra wealth-creation comes from two effects: more money invested in later years, and that money compounding for a longer time.

Step-up SIP formula

Unlike a flat SIP, a step-up SIP cannot be calculated with a single closed-form formula because the monthly amount changes each year. The calculator compounds month by month:

For each year y (from 1 to n):

• Monthly SIP in year y = Starting SIP × (1 + step-up rate)^y−1
• Each month: Balance = (Previous balance + Monthly SIP) × (1 + monthly return rate)

Where monthly return rate = Annual return ÷ 12 ÷ 100

Worked example (% step-up)

• Starting SIP: ₹10,000/month
• Annual step-up: 10%
• Expected return: 12% a year (monthly rate = 1%)
• Time period: 15 years

Year 1 SIP: ₹10,000 → Year 2: ₹11,000 → Year 3: ₹12,100 … Year 15: ₹37,975
Total invested: ₹38,07,000 | Estimated value: ₹86.8 lakh

Worked example (fixed amount step-up)

• Starting SIP: ₹10,000/month, raise ₹1,000 every year
• Year 1: ₹10,000 → Year 2: ₹11,000 → Year 3: ₹12,000 … Year 15: ₹24,000
• Total invested: ₹30,60,000 | Estimated value: ≈₹71 lakh

What step-up percentage should I use?

Use your expected annual salary increment as a starting point. If your company typically gives 8–10% raises, a 8–10% step-up is realistic. Even a 5% step-up adds meaningfully over time:

SEBI's investor education materials recommend starting with whatever you can sustain and increasing gradually.

Is a step-up SIP better than a lumpsum top-up?

A step-up SIP automates the increase and keeps you disciplined. A manual top-up each year works equally well mathematically, but requires you to remember and act. For most salaried investors, a step-up SIP is easier because it aligns with salary credits and requires no decision each year.

Tax on step-up SIP gains

Same rules as a flat SIP. Each instalment is a separate purchase. For equity mutual funds:

• Gains on units held over 12 months: taxed at 12.5% on gains above ₹1.25 lakh per year (LTCG), plus 4% cess
• Gains on units held 12 months or under: taxed at 20% (STCG), plus 4% cess

Debt funds bought on or after 1 April 2023: taxed at your income-tax slab rate.

When to use a different calculator

• Flat SIP without a step-up: SIP Calculator
• One-time lumpsum investment: Lumpsum Calculator
• How much SIP to reach a target: Crorepati Calculator
• Actual return on SIPs you already have: XIRR Calculator
• Monthly withdrawals from your corpus: SWP Calculator