How much passive income will I get from investing £10,000 in an ISA for 10 years?

Harvey Jones shows how he plans to boost the amount of passive income he gets when he retires, from FTSE 100 dividends in a Stocks and Shares ISA.

| More on:

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.

Retirement is edging closer, and I’m focused on maximising the passive income I can generate from investing in FTSE 100 shares. Most of my pot sits in a Self-Invested Personal Pension (SIPP), so now I’m accelerating contributions to a Stocks and Shares ISA. The two have complementary tax benefits, so I’m hoping to balance them out.

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.

As a freelance writer, I may never fully retire, but I’d like to have the option to do so within a decade. I may struggle to invest £10,000 a year going forwards, but let’s assume I can. I certainly won’t be the only racing to play catch up, as retirement suddenly becomes the number one financial priority. Picking the right FTSE shares can speed things along nicely.

FTSE 100 for dividends and growth

So let’s say I invest £10,000 a year in higher-yielding FTSE 100 income stocks and generate an average annual return of 8%, with dividends reinvested. In that scenario, my ISA would grow to £156,454 after 10 years.

That’s a solid return, but a decade isn’t enough to enjoy the real benefit from investing in shares, which is long-term compounding. Someone investing £10,000 a year over a 40-year working life could end up with a staggering £2.8m, assuming the same 8% a year growth. They’ve made four times the contributions but ended up with 18 times the final value. Time is the investor’s biggest ally, so don’t waste it.

Now let’s also assume my ISA delivers an income yield of 5.5%. While that’s some way above the FTSE 100 average of 3.1%, I can target this by targeting higher-yielding stocks. If I’m right, my £156,454 will generate income of £8,605 a year, or £717 a month. Hardly riches, but a handy kicker on top of my other income sources.

Phoenix Group Holdings’ shares

One stock I’m considering for my ISA is Phoenix Group Holdings (LSE: PHNX), which I already hold in my SIPP. The FTSE 100 insurer has a trailing yield of 7.4%, while the shares climbed 45% in the past year.

With a price-to-earnings ratio just above 22, Phoenix is beginning to look expensive and I expect the shares may slow a little in 2026. The real draw is the dividend, which the board has increased for nine consecutive years. I believe shareholder payouts should prove sustainable, as Phoenix generates plenty of cash, with a £300m surplus last year, according to UBS.

As with every stock, there are risks. Phoenix has to keep developing new areas of business to keep the cash rolling in. It operates in a competitive market where exciting new opportunities like bulk annuities quickly attract a host of rivals.

Also, a wider stock market crash, which some expect next year, could hit the value of the £300bn-or-so of assets it holds to protect against insurance risks. I still think it’s well worth considering and will balance out these threats by investing in a spread of FTSE 100 dividend stocks. I can see plenty more brilliant high-yielding passive income stocks to consider today.

Harvey Jones has positions in Phoenix Group Plc. 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

Close-up of British bank notes
Investing Articles

How big an ISA do you need to target £2,000 a month of passive income?

Is it possible to earn a couple of thousand pounds per month in passive income from an ISA? Our writer…

Read more »

Snowing on Jubilee Gardens in London at dusk
Investing Articles

By January 2027, £1,000 invested in Diageo shares could be worth…

How much might a stake in Diageo shares be worth by next January? Here's what the analysts expect for the…

Read more »

Portrait of elderly man wearing white denim shirt and glasses looking up with hand on chin. Thoughtful senior entrepreneur, studio shot against grey background.
US Stock

Why Nvidia stock might not be the best AI share to buy for 2026

Jon Smith points out some key reasons why Nvidia stock might struggle to outpace rivals this year, while stressing that…

Read more »

Golden hand holding Number 2 foil balloon.
Growth Shares

2 FTSE shares that could keep riding this commodities boom

Jon Smith runs through some FTSE shares linked to the precious metals mining space that are soaring due to rising…

Read more »

British flag, Big Ben, Houses of Parliament and British flag composition
Investing Articles

After strong earnings, is Diploma still one of the UK’s top growth stocks?

Investors trying to find quality growth stocks don’t have to look beyond the FTSE 100. But is that where the…

Read more »

Rear view image depicting a senior man in his 70s sitting on a bench leading down to the iconic Seven Sisters cliffs on the coastline of East Sussex, UK. The man is wearing casual clothing - blue denim jeans, a red checked shirt, navy blue gilet. The man is having a rest from hiking and his hiking pole is leaning up against the bench.
Investing Articles

Why a £250K ISA won’t replace your salary – but could still transform your retirement

What could a £250,000 ISA really do for you? It won’t retire you overnight, but it could reshape your income,…

Read more »

Storytelling image of a multiethnic senior couple in love - Elderly married couple dating outdoors, love emotions and feelings
Investing Articles

Here’s how you could build a £23,455 second income with just £100 a month!

Drip-feeding money into growth and dividend shares can eventually deliver a stunning second income in retirement. Royston Wild explains how.

Read more »

Investing Articles

The BIGGEST holding in my stocks and shares ISA in 2026 is…

Zaven Boyrazian reveals the largest holding in his Stocks and Shares ISA that’s already surged by almost 2,700% since he…

Read more »