You really could become a Stocks and Shares ISA millionaire

Becoming a Stocks and Shares ISA millionaire will require long years of diligent investing, but it is possible. And there is more than one way to get there.

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.

Becoming a Stocks and Shares ISA millionaire is possible. It might take years, decades even, but a regular investment plan combined with the tax-free wrapper an ISA provides could build a million-pound portfolio.

Everything that goes into an ISA, including dividends and capital gains from investments, is entirely free of tax, so long as the annual contribution limit (currently £20,000) is not breached. An ISA investor can reinvest any proceeds in their entirety, boosting the growth of the portfolio.

There are many strategies for building wealth inside a Stocks and Shares ISA. The choice depends on the amount of risk an investor is willing to bear, and their level of investing confidence

Premium picks

One option is to invest in multiple big, mature, dividend-paying companies. The FTSE 100 and FTSE 250 indexes are where an income investor should be looking for companies with broad economic moats and that have consistently paid dividends over the years.

Shares in AstraZenecaGlaxoSmithKlineBritish American Tobacco, and Unilever have traditionally fit the bill as reliable payers of chunky dividends. Regularly investing over time will build up the number of shares owned, and the total dividends paid. Reinvesting the dividends increases the share count and total dividends even further.

Add in some share price appreciation along the way, and a £1m ISA portfolio becomes closer to reality.

Mid-table success

Another, potentially riskier, option is to look at well-run mid- and small-cap companies that pay dividends. Here the plan is to pick up dividends along the way, but also benefit from higher rates of share price growth, or perhaps a takeover.

The FTSE SmallCap Index and lower end of the FTSE 250 are good places to look for suitable companies. Smaller companies that are growing their revenues at a good pace, and have low levels of debt and plenty of cash, are good targets.

Like with the bigger companies strategy, regular contributions and reinvested dividends will increase shareholdings over time. However, smaller, growing companies should see their share prices increase, boosting the value of the portfolio.

Takeovers of smaller companies are not uncommon, and shareholders usually get bought out at a premium. The proceeds can be ploughed back into the portfolio.

Gaining capital

Swinging for the fences is not for the faint-hearted. There is substantial risk involved in investing in the likes of oil and gold exploration companies, biotech outfits, and startups. However, for those willing to accept the risk, rapid portfolio growth is possible. The growth will almost certainly be from price appreciation alone, as these types of companies do not usually pay dividends.

The FTSE AIM All-Share Index should prove fertile hunting ground. Younger companies are tricky to assess. They don’t have much of a track record and often have novel products or ways of doing things. But there are success stories. Shares in Boohoo, an AIM-listed online fashion retailer, have increased in price by 1,370% over five years, for example.

If an investor is not comfortable picking stocks, then they can invest in funds that will do it for them. There are also index tracker funds that invest in entire markets and don’t try to pick stocks at all. 

Whatever the choice, the only way to build towards a £1m-ISA is to open one and start contributing to it.

James J. McCombie owns shares in GlaxoSmithKline and Unilever. The Motley Fool UK owns shares of and has recommended GlaxoSmithKline and Unilever. The Motley Fool UK has recommended boohoo group. 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

Retirement saving and pension planning
Investing Articles

The State Pension age is rising to 67. I’m buying UK shares to protect myself!

As the State Pension age rises, it's essential to find other ways to make money for retirement. That's why I'm…

Read more »

Landlady greets regular at real ale pub
Investing Articles

£20,000 in an ISA today can earn a second income by the summer!

Buying quality dividend shares is a proven tactic for building a chunky second income, with the money starting to flow…

Read more »

Investing Articles

Why on earth haven’t I bought dirt-cheap Barclays shares yet?

Harvey Jones is red hot for Barclays shares but he's also getting cold feet about buying them in the current…

Read more »

Wall Street sign in New York City
Investing Articles

The stock market’s fearful. Is it time to be greedy?

There is a palpable sense of fear stalking the stock market. Yet many share prices have held up fairly well…

Read more »

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

Meet the top 10 highest-dividend-yield stocks in the FTSE 250

In 2026, the UK’s flagship growth index offers a 3.4% dividend yield. But these 10 income stocks currently offer an…

Read more »

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

Should I buy more FTSE 100 stocks or conserve my cash for even bigger bargains?

After a volatile week for the FTSE 100, Harvey Jones asks if we've reached the maximum point of opportunity. Or…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

£10,000 buys 11,764 shares of this REIT, unlocking £723.49 in passive income

UK REITs offer some of the largest dividend yields on the London Stock Exchange today. Zaven Boyrazian explores the passive…

Read more »

ISA Individual Savings Account
Investing Articles

How much do I need in a Stocks and Shares ISA to aim for a £900 monthly second income?

Hoping to unlock a chunky second income from a Stocks and Shares ISA? By investing a little each month, it…

Read more »