Step-Up SIP Calculator

What is a Step-Up SIP (Top-Up SIP)? Explained

A Step-Up SIP is a feature in mutual fund SIPs that lets you increase your monthly instalment by a pre-defined % or value every year.

In a normal SIP, an investor decides on a monthly amount and then continues to pay the same sum every month for the entire tenure of the SIP. In a Step-up SIP, however, the investor picks an amount to be increased (either by rupee or %) and decides on a frequency for the increase - most often, it is done once a year.

How does a Step-Up SIP work in practice?

Say you decide to begin a ₹10,000 monthly SIP, and choose the option to step up your instalment by 10% every year. Over a period of 4 years, your SIP instalment would look like this:

• •Year 1: ₹10,000/month (₹1,20,000 annually)

• •Year 2: ₹11,000/month (₹1,32,000 annually)

• •Year 3: ₹12,100/month (₹1,45,200 annually)

• •Year 4: ₹13,310/month (₹1,59,720 annually)

The step up in payments feels completely within the capability of a household budget as it tracks with the increase in salary every year. And over the course of just a decade or so, it has the sheer potential to almost double your final corpus.

Why is a step-up SIP better than a regular SIP?

When you make a standard SIP of ₹10,000 per month for 15 years, it turns out that in reality, the purchasing power of that ₹10,000 is actually falling - a step up SIP neatly resolves this issue.

There are 3 ways in which a step-up SIP outperforms a regular SIP:

1. Contests Inflation Effectively

Say inflation in the country peaks at 6% - in that case, your ₹10,000 per month SIP would have significantly lesser purchasing power in year 10 as compared to year 1. With a 10% step up in SIP instalments, however, the increased contribution will be more than counteracting the effects of inflation.

2. Resists Lifestyle Creep

Professionals often have an increase in take-home pay every year. That extra pocket money gets easily frittered away in dining out, shopping sprees, and other frivolous expenses unless a part of it is immediately earmarked to go into investments. A step up SIP ensures that a pre-ordained portion of that incremental income is locked away in a growing corpus of mutual fund units.

3. Lets your money compound exponentially

As you near your investment horizon, your overall investment corpus has grown - you've amassed a significant amount in principal already. By adding larger amounts of principal into these mutual fund units, you're giving them the opportunity to compound exponentially. It's a great way to cut short the years required to accumulate wealth.

Step-up SIP Formula & Calculations

While a normal SIP has a very simple formula to calculate the total amount at the maturity date, a step up SIP is somewhat more complex as it is a growing annuity that has to be calculated block by block. The future value (FV) of an investment where monthly payments increase by an annual step up rate (g) can be calculated with the following formula:

Where:

• •P_k: The monthly instalment amount in year k, calculated as P_1 × (1 + g)^{k - 1}

• •P_1: The initial monthly investment amount

• •g: The annual step up rate (e.g. 0.10 for 10%)

• •r_m: The monthly expected return rate, calculated as [r_a] ÷ [12]

• •r_a: The annual expected rate of return (e.g. 0.12 for 12%)

• •N: The total investment duration in years

Since it can be very cumbersome to do these calculations manually year by year, using an automated financial calculator is highly advised.

Comparison: Regular SIP vs. Step-Up SIP (15-Year Horizon at 12%)

Investor A (Regular SIP)

• •Initial Monthly Amount: ₹10,000

• •Final Monthly Amount (Year 15): ₹10,000

• •Total Amount Invested: ₹18,00,000

• •Estimated Wealth Generated: ₹32,45,760

• •Total Maturity Value (FV): ₹50,45,760

Investor B (10% Step-Up SIP)

• •Initial Monthly Amount: ₹10,000

• •Final Monthly Amount (Year 15): ₹37,975

• •Total Amount Invested: ₹38,12,698

• •Estimated Wealth Generated: ₹52,22,583

• •Total Maturity Value (FV): ₹90,35,281

Important Notes

Investor B invested almost 2.1x more money than Investor A. But due to the fact that the step up SIP was being invested into a growing corpus of mutual fund units, Investor B found himself with almost ₹39 Lakh more at the end of the 15 years.

How to Use The Valuenomy Step-Up SIP Calculator

Our calculator determines exactly how much wealth you will have generated with an incremental SIP, in real time:

1. Enter Monthly Investment: Type the amount you expect to invest every month.

2. Set Annual Step-Up Percentage: Set the anticipated rate of increase (10% is a standard rate of increase for salaried employees).

3. Enter Expected Return Rate (%): Input the expected rate of return (say, 12% for general Indian equity index funds).

4. Choose Time Period (Years): Set your target investment horizon.

5. View the Results: See:

• •Total Amount Invested: The total amount invested across the entire tenure.

• •Estimated Returns: The returns earned purely from compound interest accrued.

• •Total Maturity Corpus: The total value of wealth at the end of the tenure.

• •Comparison Table: A comparison of the amount of extra wealth achieved by a step up SIP vs. a normal SIP.

Best Practices: How Much to Step Up?

Choosing the right step up rate depends on your income profile:

• •The 10% Rule for Salaried Employees: Most people working in a salary job in India find that the average yearly salary increment is anywhere between 8% and 12%. So committing to a 10% step up SIP is a perfect way to lock in a savings rate that is absolutely aligned with your income growth trajectory.

• •The Fixed-Rupee Method (for Freelancers/variable earners): If you are a freelancer or variable earner and find that the percentage-based jumps are too punishing in later years, you can choose to set a fixed-rupee increase rate instead of a percentage-based % increase each year. Choose a fixed ₹1000 or ₹2000 step up SIP to keep your payments predictable.

• •Setting a Step-Up Cap: If you are worried that the annual compounding of the step up SIP will get too large and stretch your monthly payment (e.g. a ₹10,000 SIP that steps up every year at 10% will surpass ₹67,000/month by Year 21), you can set a cap with your fund house (such as capping ₹35,000/monthly deductions).

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