Friday, 18 October 2019


Exponential Growth
In the series of 21 behavioural biases we will discuss the 13th bias “Exponential Growth”

As per Wall Street Journal, Exponential Growth Bias means tendency to neglect the effects of compounding growth.

We know concept of linear growth but have no idea about exponential growth.

Our ancestors imbibed the linear growth in us. They taught us doubling the working hour would result in double output! Double the food grains stored could mean double the period of consumption. Nothing wrong here!! Just add time (longer time) and reinvesting bit of saving in it. That’s compounding effect for you.

To illustrate the same with number, here how it goes-

1)      Invest 10 lakh every year @ 11% return for 10 yrs. Corpus at the end of 10 yrs – 1.67 crore
2)      Invest 10 lakh every year @ 11% return for 20 yrs. Corpus at the end of 20 yrs – 6.42 crore

Did you notice the 3.8 times jump in the corpus in 2nd example? You might argue its misleading calculation. By just doubling the amt and the period, the end corpus doesn’t double but it almost quadruples. That’s power of compounding – Exponential growth magic!!

Life Insurance industry has taken full advantage of lack of knowledge of the Investors on power of compounding!! Have you ever heard an agent disclosing the compounding rate to you? They promote products basis the number of times money will grow and the simple rate of return.
You heard them saying (in all plans except ULIPs) your money will triple in 20 yrs etc or the rate of return will be 8-9% (catch here is – Its simple interest; not compounding).

Exponential growth happens with 2 elements – Return and Investment horizon. One of two alone doesn’t work magic.👍

In earlier example we saw impact of period, now let’s examine how the return impacts the final corpus

Let’s take the same example with return rate of 7%.

1)      Invest 10 lakh every year @ 7% return for 10 yrs. Corpus at the end of 10 yrs – 1.38 crore
2)      Invest 10 lakh every year @ 7% return for 20 yrs. Corpus at the end of 20 yrs – 4.1 crore

Note the huge difference in corpus at the end of 20 yrs. Whopping 2.30 crore extra!! That’s going to be large sum of money even after 20 yrs😊

In illustrations, 11% is taken as average 11% return (post tax) on equity MF and 7% is assumed Insurance return (tax free) and current FD rate. If you invest in FDs, deducting tax, your corpus will be even lesser.

If you been ignoring equity investing due to volatility, look up on internet and see how equity does in long term. In fact, longer the period better and stable are the returns from equity.

Treat Equity as your (non-biological) child. Recall what you did for your own child at the early age??
First time standing, walking, running, other meal, cycling, sending out child alone and all of that!!
All first posed a greatest risk to child!! Isn’t it?? You did that because you wished your child to be normal, succeed in life and grow to face the world. Agree??

Why not do it for your money (non-biological child)?? After all it will have to take care of you in your thick and thins. Your retirement will be dependent on very same money
I don’t intend to say put all money in equity. Use Mutual funds as tool and start with decent amount and gradually increase the allocation as you experience it.

Einstein once said compounding is the most powerful force in universe and 8th wonder of the world.

What should you do?

1)      Recognize that over pampering is not good. Be it own child or money. You have to take risk.
2)      See the evidence of long term investing benefits of Equities.
3)      Assess if you are master in Equity Investing. If you are not, choose Mutual funds as vehicle to Invest. It’s likely to give better and smoother experience.
4)      Draw a plan for major life goals like Kids education, medical emergencies, house, retirement etc. Figure out the gap in these goal funding. Try to invest accordingly in equity to bridge those gaps.

MF Trivia: 10-15 + years performance track record of Diversified equity Mutual fund and Equity Hybrid funds (Balanced funds) has been impressively in the range of 12-15% CAGR. That’s like beating Inflation hands down.

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This article is written by Bhavesh D Damania founder of Wealthcare Investments.

You can reach him at 9833778887 and wealthcarein@gmail.com

"Risk comes until you know what, where and why you are Investing"



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