Here are my 5 steps to try and become an ISA millionaire

From regularly rebalancing his portfolio to keeping on top of new stock ideas, Jonathan Smith outlines his steps to (hopefully) join the ranks of ISA millionaires.

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.

Some people might think that trying to become an ISA millionaire within their lifetime is completely impossible. I think it’s the tag of ‘millionaire’ that causes the issue. When I think about a million pounds, it’s a lot of money. But in my opinion, it’s obtainable. I would struggle to achieve this very quickly, of course, but over the course of a few decades, it’s definitely something I think could happen. Although some things are out of my control, here’s my five steps to trying to achieve this goal.

Working backwards

It might seem strange, but to begin with I actually need to look at the end scenario. Let’s say I want my Stocks and Shares ISA to be worth £1m in around 20 years time. If I assume an annual growth rate (that compounds) of 8% from the stocks I buy, then I can work out how much I need to start investing each month. Of course, I have to remember that the 8% return isn’t guaranteed.

In this scenario, it works out at around £1,500 per month. With the ISA allocation of £20,000 a year, this works. It could make me an ISA millionaire by year 22. This is an important starting point so that I can temper my expectations of what I need to do right now to help achieve my goal further down the line. 

The second step is then to start the process of investing £1,500 per month. If I can’t commit to this, then I can reduce the monthly amount, but in the knowledge that it’ll take me longer to get to the millionaire mark within my Stocks and Shares ISA.

Making progress over time

Third, I need to do ongoing research on the companies that I’m allocating my £1,500 to each month. As I mentioned, it’s not certain that I can achieve an average growth rate of 8% each year and it’s a big assumption that I will. A large part of making this happen is ensuring I pick good quality, sustainable businesses. It’s going to take me at least 20 years to reach my ISA millionaire status, so I at least want companies that’ll be still around.

The fourth step is to rebalance my stocks portfolio within my ISA over time. This is important as in the future, my ISA can become untidy and overly concentrated in a sector or industry. Trimming down some profits or allocating more funds to other companies is a good thing, and can help to keep my overall pot on track in the long term.

The final step is trying to be disciplined in letting my pot build up. I may have taken all the first four steps but then decide after a decade to pull money out for a house purchase or something else. There’s nothing wrong with this if I desperately need the money. But it will really set me back in my big target figure.

ISA millionaire potential

With discipline and a good game plan, I believe I can achieve my end goal. It will take years, but as the old saying goes, “the steeper the climb, the better the view”.

jonathansmith1 has no position in any of the shares 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

This way, That way, The other way - pointing in different directions
Investing Articles

As the FTSE indexes sink, these unique dividend shares are making investors money

These two dividend shares are in positive territory for the month and outperforming the major FTSE indexes by a significant…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

Down 15% in days, are Rolls-Royce shares suddenly a bargain again?

Rolls-Royce shares have been heading south over the past couple of weeks. This writer thinks that makes sense -- but…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

What would a 40-year-old need to put into an empty SIPP to target monthly passive income of £1,000?

From a standing start at 40, how might someone target a four-figure monthly income stream from their SIPP? Christopher Ruane…

Read more »

British flag, Big Ben, Houses of Parliament and British flag composition
Investing Articles

As the ISA deadline approaches, UK investors have the opportunity to buy cheap shares

In recent weeks, equity markets have fallen significantly due to the conflict in the Middle East. As a result, many…

Read more »

Array of piggy banks in saturated colours on high colour contrast background
Investing Articles

£5k left in a Stocks and Shares ISA? 2 top ETFs to consider buying in April

Ben McPoland highlights a pair of very different ETFs that he thinks could help generate long-term wealth inside an ISA…

Read more »

Two business people sitting at cafe working on new project using laptop. Young businesswoman taking notes and businessman working on laptop computer.
Investing Articles

Could a £20,000 ISA end up generating £20,000 of passive income each year?

Could a Stocks and Shares ISA ultimately cover its own cost each year with the passive income it produces? Christopher…

Read more »

A young black man makes the symbol of a peace sign with two fingers
Investing Articles

2 top stocks to consider buying after this week’s FTSE carnage

Investors looking for beaten-up stocks to buy for the long term have a lot of great options after the recent…

Read more »

Smart young brown businesswoman working from home on a laptop
Investing Articles

A stock market crash could be a gift for long-term investors

A stock market crash could present some outstanding buying opportunities. But the key to taking advantage is knowing what to…

Read more »