Why it’s always a great time to drip £100 a month into the FTSE 100

I reckon compounding and pound/cost averaging could work to drive a decent investing return with the Footsie.

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

If you have a long-term investing horizon in mind I think there’s a good chance that investing regularly in an accumulation FTSE 100 index tracker fund will give you a better total return than investing money in an interest-paying bank account.

The ‘accumulation’ part of the description means that the dividends you earn from the fund are automatically reinvested back into the fund. If you reinvest your dividends like that, you’ll be on the road to compounding your money, and compounding is key to building wealth.

Smoothing out some of the ups and downs

Right now, the FTSE 100 has a dividend yield running above 4%, which is a better return than many bank accounts pay in interest. That’s a good start. But the value of your invested money will go up and down with the value of the index as the 100 or so shares making up the index fluctuate.

But if you invest, say, £100 every month, you’ll be able to smooth out some of the volatility because of pound/cost averaging. In other words, when the index cycles down, you’ll be getting more for your money, and when the index cycles up, you won’t be investing all your money near the highs.

Over the long haul, I think your FTSE 100 investment could do well. For example, even in the 10-year period between 2008 and 2017 when there was a lot of volatility in the FTSE 100, it delivered a total return of 74%, which works out at 5.7% a year, beating most bank accounts hands down.

The total returns over the period looked like this:

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

(28.3%)

27.3%

12.6%

(2.2%)

10%

18.7%

0.7%

(1.3%)

19.1%

11.9%

The figures in brackets represent a negative return during the year, so the volatility looks frightening. But even though the index lurched through last decade’s credit-crunch, it still managed that 74% total return over 10 years. Imagine how good the total returns might be if things go well.

The next 10 years could be even better

In the past, the FTSE 100 has trebled in value over a 10-year period and some believe it could do so again. I think the theory is attractive because it makes sense to me that we could be entering a new period of prosperity and economic growth after what has been a long period of economic recovery since the financial crisis around 2008/9.

Imagine what your FTSE 100 investment could look like if the index trebles in value and you’ve compounded your gains along the way by reinvesting the dividends in an accumulation fund.

However, even if the FTSE 100 falls short of that kind of performance in the years to come, I think that the twin weapons of compounding and pound/cost averaging could work to drive a decent investing return if you make regular payments into a tracker fund.

With a 10-year-plus investment time horizon in mind, I reckon it’s always a great time to drip £100 a month into the FTSE 100.

Kevin Godbold has no position in any share mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

piggy bank, searching with binoculars
US Stock

Up 59% this year, this S&P 500 stock is smashing the index!

Jon Smith points out a stock from the S&P 500 that's flying right now as part of a transformation plan,…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

Stock market correction: a rare second income opportunity?

Falling share prices are pushing dividend yields higher. That makes it a good time for investors looking for chances to…

Read more »

Finger clicking a button marked 'Buy' on a keyboard
Dividend Shares

I just discovered this REIT with a juicy 9% dividend yield

Jon Smith points out a REIT that just came on his radar due to the high yield, but comes with…

Read more »

Aviva logo on glass meeting room door
Investing Articles

£5,000 invested in Aviva shares 5 years ago is now worth…

Aviva shares have vastly outperformed the FTSE 100 over the last 5 years. Zaven Boyrazian explores just how much money…

Read more »

Photo of a man going through financial problems
Investing Articles

The stock market hasn’t crashed… yet. Don’t wait too long to prepare

Mark Hartley outlines what defines a stock market crash and provides a few tips and tricks to help UK investors…

Read more »

Two white male workmen working on site at an oil rig
Investing Articles

After a 30% rally, are BP shares too expensive — or should I consider more?

Mark Hartley breaks down the investment case for BP shares and whether the new project in Egypt is enough to…

Read more »

Two elderly people relaxing in the summer sunshine Box Hill near Dorking Surrey England
Investing Articles

Forget the FTSE 100 and come back after summer? Here’s my plan!

With the FTSE 100 moving around in a volatile way, should our writer just forget all about it for a…

Read more »

Young female hand showing five fingers.
Investing Articles

£20,000 invested in a Stocks and Shares ISA 5 years ago could now be worth…

The last five years have been something of a roller coaster for the markets. How would £20k in a Stocks…

Read more »