How much do you need in an ISA to double the 2026 State Pension?

Many ISA investors aim to earn a tax-free second income, but how much do they need to invest to double the soon-to-be increased UK State Pension?

| More on:
Middle-aged Caucasian woman deep in thought while looking out of the window

Image source: Getty Images

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.

Following the Autumn Budget, the UK State Pension is set to increase from £230.25 per week to £241.30 as of April 2026.

On an annual basis, that roughly translates into a retirement income of £12,548. But sadly, it’s not actually enough to live comfortably.

The good news is, by making smart investment decisions today, investors can get much closer to this goal. In fact, with a well-constructed ISA portfolio, it’s possible (if not guaranteed) to earn another £25,096 a year – double the 2025/26 State Pension – entirely tax-free.

Here’s how.

Please note that tax treatment depends on the individual circumstances of each client and may be subject to change in future. The content in this article is provided for information purposes only. It is not intended to be, neither does it constitute, any form of tax advice. Readers are responsible for carrying out their own due diligence and for obtaining professional advice before making any investment decisions.

The power of compounding

Following the 4% withdrawal rule, a portfolio needs to be worth approximately £627,400 to double next year’s State Pension.

Luckily, even with no savings at the age of 40, there’s still plenty of time to build up a chunky nest egg.

By making intelligent investment decisions, an ISA can go on to earn remarkable returns in the stock market. Even if that translates into 10% annualised gain (slightly ahead of the UK stock market average), investing £500 a month will grow into £630k in approximately 25 years. And thanks to compounding, those who are willing to wait a full three decades could have over £1.1m!

Of course, the question now becomes, what stocks are able to generate a 10% annualised return over the next 30 years?

Finding potential long-term winners

Maintaining double-digit returns over the long run sounds easy on paper. But in practice, it’s far more challenging. That’s because a lot can happen over the coming decades. And companies that have been outperforming today might not still be on top in the future.

Having said that, the list of potential winners can be narrowed down by looking exclusively at the companies with ample untapped growth opportunities. And one UK stock that I think could be in this category right now is Wise (LSE:WISE).

The cross-border payment specialist enables individuals and businesses to send and receive money abroad almost instantly at a fraction of the cost compared to traditional methods. And while it already has over 15 million active users, this might be the tip of the iceberg.

That’s because big banks have noticed the power of Wise’s payment technology. And rather than trying to fight it, they’re embracing it.

Morgan Stanley, Standard Chartered, and Raiffeisen Bank International are just a few of the leading financial institutions that now rely on Wise for their own international payments, making each of their customers an indirect customer of Wise. Don’t forget, Wise makes its money by charging small transaction fees.

Today, these institutionally sourced revenues make up just 5% of the group’s top line. But in the long-term management estimates, this could grow to over 50% – a massive growth opportunity.

What could go wrong?

Of course, Wise isn’t the only fintech aiming to disrupt the international payments space. This rising level of competition limits management’s ability to increase its fees, making the story all about volume.

Powering institutional money transfer certainly helps in that regard, but it nonetheless exposes Wise to shifting economic and geopolitical landscapes that can have a profound impact on international money transfers.

Nevertheless, with such enormous untapped growth potential, I’ve decided to take the risk and invest. And I think investors seeking to secure their retirement may want to think about doing the same.

Zaven Boyrazian has positions in Wise Plc. The Motley Fool UK has recommended Standard Chartered Plc and Wise Plc. 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

US Tariffs street sign
Investing Articles

2 FTSE 100 shares to consider as tariff threats explode!

Are you looking for lifeboats as global trade wars intensify? Royston Wild thinks these FTSE 100 safe haven shares demand…

Read more »

US Tariffs street sign
Growth Shares

2 UK growth stocks exposed to escalating US trade tensions

Jon Smith reviews the latest tariff news impacting UK companies and flags up a couple of growth stocks that could…

Read more »

Abstract bull climbing indicators on stock chart
US Stock

This good news could help to fuel a long-term Amazon share price rally

Jon Smith points out a new deal struck regarding copper and talks through the broader positive implications it could have…

Read more »

Person holding magnifying glass over important document, reading the small print
Investing Articles

Down 22% to under £11, is this high-tech FTSE high-flyer a screaming bargain now?

Despite solid growth, strong margins, and rising cash generation, this FTSE tech star has dropped sharply. So is it seriously…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

Here’s how investors could aim for £9,532 in yearly dividend income from this 9.9%-yielding FTSE 250 high-yield gem

A near double-digit yield backed by growing cash flow and long-term contracts makes Energean look like one of the FTSE…

Read more »

Middle-aged white man wearing glasses, staring into space over the top of his laptop in a coffee shop
Investing Articles

At a bargain-basement valuation under £19, is it time for me to buy this FTSE 100 banking gem?

This FTSE 100 giant has reshaped its business and its balance sheet and is growing fast. With the shares still…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

How to target a growing second income by investing in dividend shares

A portfolio of dividend shares can be a great source of extra income. But it’s best when that income stream…

Read more »

Emma Raducanu for Vodafone billboard animation at Piccadilly Circus, London
Investing Articles

Up almost 50%! Is it too late to buy Vodafone shares?

Vodafone shares are back on the rise after years of decline, but can this rally continue into 2026? Zaven Boyrazian…

Read more »