Is Your Teenager Heading For Millionaire Status?

Why a 50-year investment horizon is a practical reality for any investor in their teens today.

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.

Back in 2001, I began an experiment. FTSE All-Share index trackers were just beginning to catch on, and I began regularly investing in one, topping up my monthly investments with occasional lump sums.
 
In 2009, I ceased adding new money, and re-directed the regular monthly savings into my ISA-sheltered portfolio of higher-yielding income shares. For someone in their mid-fifties, it was a strategy more in keeping with my retirement plans.
 
By then, the tracker investment stood at just under £25,000, around a quarter of which had been in the form of lump-sum investments over the previous two years — including a couple of small inheritance bequests. And I left it to grow.

Today, I’m up 65% in terms of the ‘new money’ invested. And at the FTSE’s recent peak of 7,104, in April 2015, I was up 89%.
 
And had I invested the money more evenly across the period — or skewed those hefty lump sums towards the beginning of the period, rather than the end — the returns would have been even greater.

Wealth engine

All of which I mention because a friend and I were chatting yesterday about how best she could invest some money that her 16-year-old son had accumulated in NS&I bonds.
 
Regular readers won’t have any difficulty predicting my reply.
 
Rather than accept the derisory interest rates on offer by banks, building societies and NS&I, in my view it makes more sense to harness the power of the stock market’s long-term wealth-creating engine.
 
In other words, invest the money in a basket of shares in solid, well-managed businesses — businesses with a long-term record of growth combined with throwing off cash in the form of dividends.
 
For decent-sized sums of money, it can make sense to invest directly in the businesses themselves. But for smaller nest eggs, a low-cost index tracker is probably the best way to get a taste of the stock market’s wealth-building properties.

Shares vs. cash vs. bonds vs. property

Of course, that’s guidance that is suitable for most people with a reasonably long-term time horizon.
 
It’s not generally a good idea to invest money in the stock market that you’re going to need next month or even next year.
 
But over the long-term — and especially when you’ve some discretion about when (or if) to liquidate a stock market investment — studies repeatedly show that the stock market outperforms cash savings and bonds.
 
And stock market investments also have a very distinct advantage over property investments: it’s impossible to buy property with the modest amounts of spare cash that most people have.
 
You either buy all of a house, or none of it. Ditto when it comes to selling, of course.
 
Not so with shares.

Time horizon

But there’s another reason for thinking about the stock market in the case of someone still in their teens.
 
At 16, they have an opportunity that isn’t open to many of us: the opportunity to let the power of the stock market do its stuff over the seriously long term — 50 years or so.

As I’m now in my very early sixties, a 50-year horizon is of no interest to me. But for the 16-year-old in question, it’s an opportunity to build a considerable nest egg with minimum effort.
 
How considerable? Let’s do the sums.

Making a start

Assuming a fairly conservative 7% long-term annual return, £5,000 invested in the stock market will have grown to £147,285 after 50 years.
 
Throw in another £25 each month, and that grows to £300,898. Make that £50 a month, not £25, and the outcome is £437,894. And any 16 year old with a Saturday job should be able to find £50 a month, if the will to do so is there.
 
I could go on, but I’m sure you get the idea: with a 50-year time horizon, remarkable things are possible — including millionaire status.
 
My kids have brokerage accounts, and (modest) shareholdings. Do yours? If not, it could be time for them to set out on that remarkable journey.

More on Investing Articles

Investing Articles

I asked ChatGPT to settle the ISA v SIPP debate once and for all. It said…

Instead of working out whether an ISA or SIPP is the better tax wrapper, Harvey Jones called the robots in.…

Read more »

Middle-aged white male courier delivering boxes to young black lady
Investing Articles

Amazon shares: overpriced or a possible bargain?

Christopher Ruane thinks Amazon shares look pricier than he normally likes -- but also reckons they could be a potential…

Read more »

Female Tesco employee holding produce crate
Investing Articles

In a jittery market, could Tesco shares be a defensive choice?

Could Tesco shares be a safe haven in nervous markets, given that consumers always need to eat? Our writer is…

Read more »

British coins and bank notes scattered on a surface
Investing Articles

How much might £10,000 in Rolls-Royce shares soon be worth? Let’s ask the experts

Do Rolls-Royce shares look like a good buy after recent price falls? City analysts still appear bullish, but global events…

Read more »

Queen Street, one of Cardiff's main shopping streets, busy with Saturday shoppers.
Investing Articles

Take a deep breath! £10,000 invested in Greggs shares a year ago is now worth…

Someone who bought Greggs shares a year ago is nursing a paper loss. Our writer digs into the reasons why…

Read more »

Mature black woman at home texting on her cell phone while sitting on the couch
Investing Articles

Whatever happened to the stock market crash?

The stock market refuses to crash, despite the Iran war. But Harvey Jones says lots of FTSE 100 shares have…

Read more »

Petrochemical engineer working at night with digital tablet inside oil and gas refinery plant
Investing Articles

BP’s share price will keep surging in 2026, according to this broker

BP’s share price is in a strong upward trend right now. And one City brokerage firm seems to believe that…

Read more »

Picture of an easyJet plane taking off.
Investing Articles

These 4 red flags mean I’m avoiding easyJet shares like the plague!

easyJet shares have slumped by around a quarter during the past month. Does this represent a dip-buying opportunity? Royston Wild…

Read more »