How much should you have in a Stocks and Shares ISA to target a £15,000 a year passive income?

Investing in the stock market always brings risk. But a Stocks and Shares ISA might be the nearest thing dividend investors have to a no-brainer.

| More on:

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.

ISA Individual Savings Account

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.

Ordinarily, how much someone needs to invest to earn £15,000 a year in passive income depends on their tax bracket. But a Stocks and Shares ISA makes things much easier.

The ability to protect investments from dividend tax is a big asset for investors. And investors shouldn’t underestimate what that means in terms of a second income.

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.

Dividend taxes

UK investors currently get a £500 annual dividend allowance. After that, the income they receive from companies is taxed at a rate that depends on their income bracket.

This can dramatically change the amount an investor needs to generate in dividends to make £15,000 a year. At different tax levels, the equation is as follows:

Tax bracketDividend tax ratePre-tax dividendsPost-tax dividends
Basic rate8.75%£16,390£15,000
Higher rate33.75%£22,376£15,000
Additional rate39.35%£24,408£15,000

A Stocks and Shares ISA, however, makes everything much more straightforward. An investor only needs a portfolio that generates £15,000 a year in dividends to keep that £15,000 a year.

This makes a big difference to the amount someone needs to invest to earn a £15,000-a-year second income. And this is especially true in the upper tax brackets.

High yields

Legal & General (LSE:LGEN) shares currently have the highest dividend yield in the FTSE 100. At 8.95%, that means a portfolio worth £167,597 could generate £15,000 a year.

High yields, however, often come with risks – and I think that’s the case here. The long-term nature of life insurance means companies can’t reset their pricing in response to rising costs.

The firm is also distributing more in dividends than it’s making in net income. While it’s very capable of funding this from its surplus cash in the short term, it’s not sustainable indefinitely.

A big dividend yield offsets a lot of this risk and an investment could turn out very well if inflation and bond prices are favourable. But I think investors should proceed with caution.

Competitive advantages

Not all insurance companies are the same, though, and I’m much more positive about Admiral (LSE:ADM) as an investment. Its 5.43% dividend yield is still well above the FTSE 100 average. 

The firm focuses on car insurance, where contracts typically last a year instead of decades. So while inflation is still a risk, the company has the chance to reset its pricing every 12 months.

There are other risks – car insurance is a heavily regulated business where consumers are driven by low prices. But Admiral’s telematics operation gives it a big advantage over competitors.

This has manifested itself in underwriting margins that have consistently outperformed the wider industry. And this is a long-term strength that I think makes the stock worth considering.

How much do you need?

I like Admiral very much, as an investment. But I think passive income investors should look for opportunities to build a diversified portfolio. 

A 5.43% yield means a basic rate taxpayer without an ISA would need £301,841 invested to earn £15,000 a year in dividends. And this rises to £412,081 at the higher rate and £449,502 in the additional rate bracket.

With an ISA, however, someone — in any tax bracket — only needs a portfolio worth £276,243. There aren’t many guarantees with dividends, but a Stocks and Shares ISA might be the nearest thing income investors have to a no-brainer.

Stephen Wright has no position in any of the shares mentioned. The Motley Fool UK has recommended Admiral Group 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

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

New to investing in the stock market? Here’s how to try to beat the Martin Lewis method!

Martin Lewis is now talking about stock market investing. Index funds are great, but going beyond them can yield amazing…

Read more »

Passive income text with pin graph chart on business table
Investing Articles

This superb passive income star now has a dividend yield of 10.4%!

This standout passive income gem now generates an annual dividend return higher than the ‘magic’ 10% figure, and consensus forecasts…

Read more »

Young woman working at modern office. Technical price graph and indicator, red and green candlestick chart and stock trading computer screen background.
Investing Articles

£5,000 invested in Tesco shares on 1 January 2025 is now worth…

Tesco shares proved a spectacular investment this year, rising 18.3% since New Year's Day. And the FTSE 100 stock isn't…

Read more »

This way, That way, The other way - pointing in different directions
Investing Articles

With 55% earnings growth forecast, here’s where Vodafone’s share price ‘should’ be trading…

Consensus forecasts point to 55% annual earnings growth to 2028. With a strategic shift ongoing, how undervalued is Vodafone’s share…

Read more »

A pastel colored growing graph with rising rocket.
Investing Articles

Here’s how I’m targeting £12,959 a year in my retirement from £20,000 in this ultra-high yielding FTSE 100 income share…

Analysts forecast this high-yield FTSE 100 income share will deliver rising dividends and capital gains, making it a powerful long-term…

Read more »

A senior man using hiking poles, on a hike on a coastal path along the coastline of Cornwall. He is looking away from the camera at the view.
Investing Articles

Is Diageo quietly turning into a top dividend share like British American Tobacco?

Smoking may be dying out but British American Tobacco remains a top dividend share. Harvey Jones wonders if ailing spirits…

Read more »

Young woman holding up three fingers
Investing Articles

Just released: our 3 top income-focused stocks to consider buying in December [PREMIUM PICKS]

Our goal here is to highlight some of our past recommendations that we think are of particular interest today, due…

Read more »

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

Tesco’s share price: is boring brilliant?

Tesco delivers steady profits, dividends, and market share gains. So is its share price undervaluing the resilience of Britain’s biggest…

Read more »