Cash ISA versus the FTSE 100: Which should you choose?

Rupert Hargreaves explains why he thinks investing in the FTSE 100 (LON:INDEXFTSE: UKX) is always worth the risk.

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.

When investing, your capital is at risk. The value of your investments can go down as well as up and you may get back less than you put in.

Read More

The content of this article is provided for information purposes only and is not intended to be, nor does it constitute, any form of personal advice. Investments in a currency other than sterling are exposed to currency exchange risk. Currency exchange rates are constantly changing, which may affect the value of the investment in sterling terms. You could lose money in sterling even if the stock price rises in the currency of origin. Stocks listed on overseas exchanges may be subject to additional dealing and exchange rate charges, and may have other tax implications, and may not provide the same, or any, regulatory protection as in the UK.

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.

When it comes to saving for the future, tens of thousands of savers open a Cash ISA every year. While there’s nothing wrong with opening a Cash ISA, even the best interest rates available on the market today don’t compensate savers for the risks they are taking by leaving their money in cash.

The biggest risk savers face

The biggest risk cash savers face is inflation. Inflation can make cash savings, which many savers believe are risk-free, exceptionally risky. Every year, inflation chips away at your wealth. And if you are not earning a rate of interest that’s greater than the rate of inflation, then your money is actually losing value.

According to my research, the best Cash ISA interest rate available on the market today is around 1.5% for an easy access product, or 2.3% if you are willing to lock your money away for five years.

By comparison, the annual inflation rate for the UK during the first quarter of 2019 averaged 1.9%, which implies money in a flexible Cash ISA receiving an interest rate of 1.5% will lose 0.4% of its purchasing power this year.

In my opinion, inflation risk is the primary reason why the FTSE 100 is currently a better investment than Cash ISAs.

Inflation protection

With a dividend yield of 4.4% at the time of writing, the FTSE 100 more than compensates investors for the risk of inflation. On top of this, company earnings tend to increase with inflation over the long term as businesses increase their prices. This means the capital value of the FTSE 100 should increase with inflation over time as well.

So that’s inflation dealt with. But what about the risk volatility? While it’s true the FTSE 100 does go up and down on a day-to-day basis, over the long term, the index has only gone up.

Between 1999 and the end of 2018, the FTSE 100 produced a total return of 93.5%, which I think is an awe-inspiring return considering the fact that this two-decade time frame contains not one but two severe bear markets, the bursting of the dot.com bubble and the financial crisis.

The very fact that the FTSE 100 almost doubled investors money during this time frame, which was one of the most turbulent periods for financial markets for some time, stands testament to its ability to create wealth over the long term.

The bottom line

There’s nothing wrong with putting a portion of your savings in a Cash ISA but, as I’ve explained above, even though the tax advantages of this product are attractive, the current interest rates available don’t make up for the risk of inflation.

With that in mind, I think the FTSE 100 is a much better place to invest your money today. What’s more, owning a FTSE 100 tracker fund inside a Stocks and Shares ISA will achieve the same tax benefits and a much better return on your money over the long term.

Should you invest, the value of your investment may rise or fall and your capital is at risk. Before investing, your individual circumstances should be assessed. Consider taking independent financial advice.

Rupert Hargreaves owns no 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

Investing Articles

Want a £1,320 passive income in 2025? These 2 UK shares could deliver it!

These dividend stocks have long histories of paying large and growing dividends. They're tipped to deliver more huge rewards in…

Read more »

Investing Articles

With P/E ratios below 8, I think these FTSE 250 shares are bargains!

The forward P/E ratios on these FTSE 250 shares are far below the index average of 14.1 times. I think…

Read more »

Investing Articles

Are stocks and shares the only way to become an ISA millionaire?

With Cash ISAs offering 5%, do stocks and shares make sense at the moment? Over the longer term, Stephen Wright…

Read more »

Dividend Shares

4,775 shares in this dividend stock could yield me £1.6k a year in passive income

Jon Smith explains how he can build passive income from dividend payers via regular investing that can compound quickly.

Read more »

Investing Articles

Is the Rolls-Royce share price heading to 655p? This analyst thinks so

While the Rolls-Royce share price continues to thrash the FTSE 100, this writer has a couple of things on his…

Read more »

Investing Articles

What’s going on with the National Grid share price now?

Volatility continues for the National Grid share price. Is this a warning sign for investors to heed or a buying…

Read more »

Middle-aged white man wearing glasses, staring into space over the top of his laptop in a coffee shop
US Stock

This is a huge week for Nvidia stock

It’s a make-or-break week for Nvidia stock as the company is posting its Q3 earnings on Wednesday. Here’s what investors…

Read more »

Man writing 'now' having crossed out 'later', 'tomorrow' and 'next week'
Investing Articles

After crashing 50% this FTSE value stock looks filthy cheap with a P/E of just 9.1%

Harvey Jones has some unfinished business with this FTSE 100 value stock, which he reckons has been harshly treated by…

Read more »