Everything You Need To Know About SIP Investing In Mutual Funds!

By | December 18, 2017

If you’ve ever wondered how to go about investing in Mutual Funds through an SIP, then you’re in luck. We’ll tell you all you need to know!

Everything You Need To Know About SIP Investing In Mutual Funds!

Regular savings, even in small amounts, help in building a huge corpus over a long period of time. The Systematic Investment Plan (popularly called SIP) is a way of investing regularly in Mutual Funds. The investor invests a fixed amount at regular intervals for a fixed tenure, chosen at the time of investment.

The periodicity of investment depends on the Mutual Fund. Most Mutual Funds allow SIPs on a monthly basis, while there are some funds which allow SIPs even on a quarterly basis.  The NAV prevailing on the date of your investment every month determines the units to be allotted. A high NAV results in fewer units allotted and vice versa.

How does an SIP work?

Suppose you have Rs. 60,000/- and wish to invest this in a Mutual Fund. Let’s assume that the Sensex at the time of your decision is at 18,000. Let’s look at the following two cases:

Case 1: You invest this amount as a lump sum in an equity Mutual Fund, which has an NAV of Rs. 60 on 20th January. Thus, you own 1,000 units of the equity Mutual Fund.

Case 2: Instead of investing the entire amount in at one go, you decide to invest in an equity Mutual Fund in the form of a SIP every month. Let’s say you invest Rs. 5,000 per month for the next 12 months, starting 20th January. Assume that the markets are highly volatile over the next 12 months, resulting in the NAV fluctuating every month. This is what your investment will look like:

Date of Investment Amount invested NAV Units allocated
20th January 5,000 60.0 83.33
20th February 5,000 60.4 82.78
20th March 5,000 60.2 83.06
20th April 5,000 60.8 82.24
20th May 5,000 60.5 82.64
20th June 5,000 60.1 83.19
20th July 5,000 59.5 84.03
20th August 5,000 59.0 84.75
20th September 5,000 58.4 85.62
20th October 5,000 58.6 85.32
20th November 5,000 59.2 84.46
20th December 5,000 59.0 84.75
TOTAL 60,000 1006.17

You own 1006.17 units of the Mutual Fund at the end of 12 investments purchased at an average cost of Rs. 59.63 per unit.


In both cases, the total amount invested is the same at Rs. 60,000. However, you hold more units in Case 2 compared to Case 1. The fluctuation in NAV of the fund due to volatile markets resulted in some months witnessing an NAV lower than Rs. 60 (which is the NAV under Case 1).

As a result of this, more units were alloted during these months, compared to the months where the NAV was higher than Rs. 60. Consequently, you had more units in Case 2.

The main question to be addressed is if this wonder of SIP works in all scenarios. The answer is that it does not necessarily work in your favour all the time. So, should you opt for the SIP mode of investment or not? Let’s look at the benefits and drawbacks of SIP investing before answering this question.

Benefits of SIP

  • Disciplined investments: When you save and invest regularly, you become a disciplined investor. As there is a forced commitment towards investment, you also tend to cut back on unnecessary expenses during the month.
  • Large investments not needed: Under the SIP route, you can invest even small amounts, which can be as low as Rs. 500 per month. As the investments are small and there is no need to set aside a lumpsum, it is easier on your wallet.
  • Rupee cost averaging: When you invest through SIPs, you get more units when the NAV is low and fewer units when the NAV is high. As a result, your cost per unit is lower than the simple average NAV during the period. This is known as rupee cost averaging, which is beneficial to an investor.
  • No need to time markets: A retail investor is generally unsure of market movements, and is unable to benefit from such moves. He also may not have the time to monitor his investments regularly. In such cases, SIP investing helps you in averaging costs and reduces risk related to lumpsum investments.

Drawbacks of SIP

  • Not suitable in a Bull market: An SIP will result in a higher average cost and fewer units compared to a lumpsum investment. This happens if there is a bull phase in the equity markets, which results in higher NAVs every month.
  • Lock-in period in ELSS funds: ELSS funds entails each of your investments being locked-in for 3 years from the date of investment.

Given the positives and negatives, when should you opt for an SIP investment?

You can benefit from SIPs only if you anticipate a bear run in the market or volatile markets during the proposed tenure of investment. SIPs should not be selected if markets are expected to be bullish. This will result in lower returns compared to a lump sum investment.

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