Want to make a million from FTSE 100 shares? I think a Stocks and Shares ISA can help

A Stocks and Shares ISA could improve your returns from FTSE 100 (INDEXFTSE:UKX) stocks, while being a simple means of investing.

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.

Making a million from buying FTSE 100 shares may not be an easy task, but the chances could be boosted via a Stocks and Shares ISA. It offers greater tax efficiency than a bog-standard sharedealing account, while providing a simple means of investing in a variety of assets.

Furthermore, the fact that withdrawals from a Stocks and Shares ISA are not subject to tax could make it easier to budget during retirement while also providing improved flexibility versus a pension.

Tax efficiency

While the annual capital gains tax allowance of £12,000 may sound very generous, in the long run it could prove to be surprisingly inadequate for many investors. Contributing even modest sums to the stock market on a regular basis can produce a large nest egg in the long run. And, should you wish to sell stocks after holding them for many years, a gain of more than £12,000 could feasibly be recorded in a single year.

Likewise, the annual dividend allowance of £2,000 may seem to be relatively high today. But for an investor who’s built up a portfolio throughout their life, from which they intend to draw a passive income in older age, dividend taxes can add up and have a significantly negative impact on their financial position in retirement.

As such, a Stocks and Shares ISA’s tax efficiency could save you a significant sum of money in the long run. Its lack of capital gains tax and dividend tax makes it a far more attractive prospect than that sharedealing account.

Simplicity

Perhaps, surprisingly, a Stocks and Shares ISA is no more difficult to open than a sharedealing account. The process generally takes just a few minutes at many providers, while the cost difference between the two products can be as little as the price of one trade per year.

Furthermore, a Stocks and Shares ISA is a simple product to understand. There’s an annual allowance of £20,000, and withdrawals are allowed at any time. There’s no tax payable on capital held within a Stocks and Shares ISA, nor is there any tax paid on withdrawals. Therefore, any investor can benefit from its low costs and tax efficiency, which could make a £1m portfolio a more realistic goal for a wider range of investors.

In addition, the simplicity of a Stocks and Shares ISA could mean an investor is able to focus their attention on the performance of their portfolio, rather than on its administration. This may increase their chances of unearthing the highest-quality stocks in the FTSE 100, as well as being able to benefit from opportune moments to add new stocks to their portfolio. In the long run, this could increase their overall returns and boost their chances of becoming an ISA millionaire.

Peter Stephens 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 For Beginners

1 FTSE 250 stock I like and 1 I’ll avoid after the stock market correction

Jon Smith analyses the move lower in certain FTSE 250 companies over the past month and picks one that looks…

Read more »

Playful senior couple in aprons dancing and smiling while preparing healthy dinner at home
Investing Articles

Is April 2026 a great time to buy Lloyds shares?

Lloyds shares have been flying over the last two years. And there's one factor that could mean the bank continues…

Read more »

Young mixed-race couple sat on the beach looking out over the sea
Investing Articles

Want to aim for a £500 second income each month? Here’s how much it takes

Christopher Ruane digs into the numbers and mechanics that could let someone with no shares today build an annual second…

Read more »

Aston Martin DBX - rear pic of trunk
Investing Articles

Down 95%, what might it take for the Aston Martin share price to rise 2,000%?

The Aston Martin share price has collapsed. Our writer considers what it might take for it to regain some ground…

Read more »

Investing Articles

How are Diageo shares looking in April 2026?

It's been an eventful year so far, but what has the impact been for Diageo shares, and where might they…

Read more »

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

P/Es below 7! 3 staggeringly cheap shares despite yesterday’s rally

Investors who fear they have missed their opportunity to buy cheap shares as the stock market recovers might want to…

Read more »

ISA coins
Investing Articles

Want to know what UK investors have been buying in their ISAs?

Looking for stock, trust, and fund ideas this April? Royston Wild discusses what Brits have been stuffing in their Stocks…

Read more »

Mature Caucasian woman sat at a table with coffee and laptop while making notes on paper
Investing Articles

Why aren’t people buying Greggs shares by the bucketload?

Greggs' shares remain in the doldrums. But should Foolish investors consider pouncing while others won't? Paul Summers takes a fresh…

Read more »