Here’s how I’d double my State Pension with £10 a week

Rupert Hargreaves explains how he’s planning to double his retirement income by investing £10 every week.

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.

Retirees receiving the full State Pension today are entitled to £168.60 a week, or £8,767.20 a year. Studies show this basic income isn’t enough for the average retiree to live on comfortably. Most retirees will therefore need to supplement this weekly payout with an additional income stream. 

With that in mind, I’m going to explain how I would double my State Pension in retirement with savings of just £10 a week.

Setting a target 

According to my figures, a saver would need to have put away around £220,000 at the time of retirement to be able to double their State Pension. The best way to meet this target, in my opinion, is to open and start contributing to a Self-Invested Personal Pension (SIPP).

SIPPs are a tax-efficient way of saving for the future. Any money added is subject to tax relief at your marginal tax rate, which is 20% for basic rate taxpayers. Higher and additional rate taxpayers can also claim back tax on their self-assessment form. 

Thanks to these tax benefits, basic rate taxpayers will receive £2 in benefits for every £8 they contribute, taking the total up to £10. If you contribute £10 a week, the additional government bonus will boost the total up to £12.50 a week, £54.17 a month, or £650 a year. 

Making the most of the tax benefits available to investors is just the first stage of my plan to double my State Pension. The next part of my plan is to invest this monthly contribution. 

Investing for the future

I’m not planning to retire for several decades, so I’m quite happy to invest my money in a low-cost passive index tracker fund. I believe that over the long term, this is going to be the best instrument to grow my wealth.

Both the FTSE 250 and FTSE 100 are excellent indexes to track for this purpose. The blue-chip FTSE 100 offers more in the way of income and less volatility, but its returns have lagged those of the FTSE 250 during the past decade. 

Indeed since 2009, the FTSE 100 has produced an average annual total return for investors in the region of 7%, while the FTSE 250 has returned 9%. So, if you’re willing to own the more volatile FTSE 250, it’s undoubtedly worth it for the extra returns. 

According to my calculations, it would take around 38 years to hit the £220,000 savings target, assuming an average annual return of 9% and monthly contributions of £54.17. By comparison, I calculate it would take 46 years to hit the same level using the FTSE 100. 

The bottom line

So that’s how I would double my State Pension with contributions of just £10 a week. Using a combination of the tax benefits available with a SIPP and the wealth-creating power of the stock market over the long term, I believe any investor can do the same.  

Rupert Hargreaves owns no share 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

Female student sitting at the steps and using laptop
Investing Articles

UK stocks: the contrarian choice for 2026

UK stocks aren’t the consensus choice for investors at the moment. But some smart money managers who are looking to…

Read more »

Investing Articles

Down 20% in 2025, shares in this under-the-radar UK defence tech firm could be set for a strong 2026

Cohort shares are down 20% this year, but NATO spending increases could offer UK investors a huge potential opportunity going…

Read more »

Young Caucasian woman with pink her studying from her laptop screen
Investing Articles

New to investing? Here’s Warren Buffett’s strategy for starting from scratch

Warren Buffett says he could find opportunities to earn a 50% annual return in the stock market if he was…

Read more »

Investing Articles

Can the sensational Barclays share price do it all over again in 2026?

Harvey Jones is blown away by what the Barclays share price has been doing lately. Now he looks at whether…

Read more »

Investing Articles

Prediction: in 2026 mega-cheap Diageo shares could turn £10,000 into…

Diageo shares have been burning wealth lately but Harvey Jones says long-suffering investors in the FTSE 100 stock may get…

Read more »

Investing Articles

This overlooked FTSE 100 share massively outperformed Tesla over 5 years!

Tesla has been a great long-term investment, but this lesser-known FTSE 100 company would have been an even better one.

Read more »

A pastel colored growing graph with rising rocket.
Investing Articles

I’m backing these 3 value stocks to the hilt – will they rocket in 2026?

Harvey Jones has bought these three FTSE 100 value stocks on three occasions lately, averaging down every time they fall.…

Read more »

Investing Articles

Can the barnstorming Tesco share price do it all over again in 2026?

Harvey Jones is blown away by just how well the Tesco share price has done lately, and asks whether the…

Read more »