We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

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.

Should you swap your cash ISA for a stocks and shares ISA?

These tax-free accounts can be a great way to build wealth, explains Roland Head.

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.

ISAs are a great way to build up tax-free savings. But many investors are unsure about the differences between cash ISAs and stocks and shares ISAs.

Today I want to explain why you can have both types of ISA, but why the stock market variety is likely to be a more effective way to build wealth.

XXX

What’s so good about ISAs?

Everyone aged 16 and over can put £20,000 into an ISA each year. These accounts are tax free, so you’ll never have to pay tax on interest, income or capital gains earned on this money.

As the name suggests, you can only put cash into a cash ISA. This money is protected by the Financial Services Compensation Scheme (FSCS) up to a maximum of £85,000.

However, the tax savings in cash ISAs are often fairly modest. At the time of writing, the best interest rate on an easy access cash ISA was about 1.45%. At that rate, you’d need £68,965 in your ISA to receive interest of £1,000 in a year.

However, the government’s personal savings allowance means that even in a taxable savings account, basic rate tax payers can earn up to £1,000 of interest tax-free each year. So unless you have a lot of cash saved, cash ISAs provided limited tax benefits at the moment.

Cash vs stocks and shares

Stocks and shares ISAs offer the same tax-free protection as cash ISAs, but because they’re investment accounts, the value of your money can rise and fall. Because of this, these accounts should be used for long-term investment only, in my view.

The real attraction of stocks and shares ISAs is that the tax benefits are potentially much greater. At the time of writing, the FTSE 100 offers a dividend yield of 4.4%. With the £68,965 I mentioned above, you could generate a cash income of about £2,750 each year.

That’s worth sheltering from tax. And over the long term, history suggests you would enjoy capital gains on top of your dividend income. The long-term average return from the UK stock market is about 8% each year. At this rate, the tax savings with a stocks and shares ISA could really mount up.

The good news is that you don’t have to choose between a cash ISA and a stocks and shares ISA. You can pay into one account of each type every year, as long as your combined payments don’t exceed the £20,000 limit.

Getting started with a stocks and shares ISA

A stocks and shares ISA is like a wrapper. You can put investments such shares, funds or government bonds inside the ISA, and any future returns they provide will be tax free.

I think the best way to get started is to open a stocks and shares ISA and then put a FTSE 100 tracker fund into it. Many allow you to save as little as £25 per month, so you don’t need a lot of spare cash to get started.

Tracker funds are also usually the cheapest funds you can find, which is good news. Low fees mean you keep more of the profits.

As with all investing, the most important thing is to start as early as you can, so that your money has more time to work for you.

Roland Head 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

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »