Here’s my plan for creating a £1m ISA

Think it’s impossible to build an ISA worth a million quid? Andy Ross says it’s not and here’s how he’d try to do it.

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.

My plan for a £1m ISA isn’t rocket science. Anyone willing to take some calculated risks with their money can also, with time, become an ISA millionaire. 

This is the key. My plan involves not letting inflation erode my savings and not tying up a huge amount of my money in expensive buy-to-let properties. Instead, I strongly believe that investing in shares with a long-term mindset creates ample opportunity for creating a pot worth £1m wrapped up within a tax-efficient ISA.

Punching some numbers into an investment calculator I see that with growth of 7.5% per year (which is achievable), it could take anywhere from 20 to 50 years to build up a million pounds in an ISA, depending on what you start with and how much you put in each year. As an example, putting in £600 a month with £20,000 already tucked away gives a 33-year timeframe. Increase the monthly contribution by just £50 though and it falls to just over 31 years.

It could take longer, and it certainly could take less time than that. One thing it isn’t is a get-rich-quick scheme, but it’s quicker than a Cash ISA as you’d likely never reach the hallowed £1m mark with one of those. 

Compound growth

The phenomenon of compound growth (where dividends create a virtuous circle as you can use them to buy more shares and so receive ever more income from your growing portfolio) is, in my opinion, the single biggest contributor to becoming an ISA millionaire without sleepless nights. Of course, you could invest in penny stocks, Wolf of Wall Street-style. But the risk of losing money – something legendary investor Warren Buffett advises strongly against even if it means forgoing some opportunities for gains – means it isn’t worth it.

Instead, I’d focus on shares that offer a sustainable and growing dividend yield. This will often narrow down the field to the UK’s largest 350 listed companies, known collectively as the FTSE 350. Within these companies, with some research and due diligence, it’s absolutely possible to find companies that fit the bill and work towards a portfolio that will, over time, swell in value.

Some ideas for starters

Legal & General is one company that looks like it meets the criteria, it’s a share that I have actually owned for many years now. It offers an impressive dividend yield and is expanding into new markets, for example, housebuilding. 

I will also take a look at shares that are currently out of favour but are fundamentally stable and could bounce back. These are known as turnaround opportunities and examples include 888 Holdings, Crest Nicholson, Smurfit Kappa, Aviva, SSE and Standard Life Aberdeen. With housebuilders, packaging companies and energy providers out of favour with investors currently, it may actually be a good time to investigate adding these companies into my ISA. I will have to remember though, shares could be cheap for a reason – it may be that they are rubbish. It is important for me to avoid losers and keep backing (and holding) winners. 

The key is to not to be completely risk-averse but to take calculated risks after careful research into those that are doing well but are just temporarily out of fashion. These companies will have the best ‘bounce-backability’, I feel. That is my plan for creating an ISA worth one million pounds.

Andy Ross owns shares in Legal & General. 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

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

Experts think this penny stock could rise by 80% or more in the coming year

Jon Smith points out a penny stock that has the potential to soar this year if international expansion pays off,…

Read more »

Investing Articles

What next for Barclays shares, after this shock 15% slump?

What a tangled web we encounter when we look too deeply into the workings of the global banking sector. Barclays…

Read more »

Hydrogen testing at DLR Cologne
Investing Articles

Will the Rolls-Royce share price rise 5% or 36% by this time next year?

Rolls-Royce's share price hit new heights after stunning full-year results on Thursday (26 February). Can the FTSE 100 firm keep…

Read more »

Black woman using smartphone at home, watching stock charts.
Investing Articles

Airtel Africa’s shares are up as others on the FTSE 100 plummet. What’s going on?

With yet another conflict starting in the Middle East, James Beard notes that investors are still buying Airtel Africa’s shares.…

Read more »

Bearded man writing on notepad in front of computer
Investing Articles

Hot dates for dividend investors to mark in their March diaries

The year's stock market gains might be taking some edge off high yields, but UK dividend investors still have plenty…

Read more »

Finger clicking a button marked 'Buy' on a keyboard
Investing Articles

Is it time to snap up Nvidia stock, after it fell 9% on Q4 results?

Nvidia makes a laughing stock of naysayers and their doom-and-gloom moods yet again, but the stock responds with a hefty…

Read more »

Close-up of a woman holding modern polymer ten, twenty and fifty pound notes.
Investing Articles

How much do you need in an ISA to generate a second income of £2,700 a month in 2050?

Ben McPoland highlights a 6%-yielding stock from the FTSE 100 index that could contribute towards an attractive second income.

Read more »

Iberian plane on runway
Investing Articles

Is this a once-in-a-decade chance to snap up my highest conviction UK share?

Harvey Jones is a big fan of this beaten-down UK share and reckons it offers some of the most exciting…

Read more »