Compare stocks and shares ISAs

A stocks and shares ISA - also known as an investment ISA or equity ISA - is a tax-efficient way to invest your money. Rather than being an investment itself, it acts as a ‘wrapper’ that allows you to hold a range of assets - such as shares and bonds - while shielding your returns from certain taxes.

What makes it tax-efficient?

With a stocks and shares ISA, you don’t pay capital gains tax on any profits made when you sell investments. You also won’t pay income tax on dividends or interest earned within the account. Over time, this tax protection can significantly boost any returns compared to investing outside an ISA.

It's important to remember that your investments can rise and fall in value, so there is a risk you could get back less than you invest. It often works best as a longer-term strategy - think five years or more - as this can help ride out any market fluctuations.

As with any ISA, there's a limit to how much you can contribute. For the 2025/26 tax year, the ISA allowance is £20,000, and this applies across all types of ISA combined - not per account.

Here are some groups of people who may benefit from investing in a investment ISA:

• Long-term investors: If you have a long investment horizon (typically 5 years or more), an investment ISA can be a great option. It allows your investments to grow tax-free over time, providing the potential for significant returns.

• Individuals looking to grow their wealth: Investment ISAs offer the potential for higher returns compared to traditional savings accounts, making it suitable for those looking to grow their wealth over the long term.

• Those comfortable with investment risk: Investing in the stock market involves risks, including the potential loss of capital. However, over the long term, the stock market tends to provide higher returns compared to cash savings. If you're comfortable with some level of risk and can tolerate market fluctuations, an investment ISA can be a suitable option.

• Individuals seeking tax efficiency: Investment ISAs offer tax advantages, including no capital gains tax on profits and no additional income tax on dividends received within the ISA. This makes them attractive for individuals looking to maximize their investment returns without the drag of taxes.

• Investors looking for diversification: An investment ISA allows you to invest in a wide range of assets, providing diversification across different asset classes, sectors, and regions. Diversification can help reduce the overall risk of your investment portfolio.

• Those who have maximised other tax-advantaged accounts: If you've already maxed out your contributions to other tax-advantaged accounts such as workplace pensions or Lifetime ISAs, an investment ISA can be a good additional option for tax-efficient investing.

If you are saving for the short term then a normal savings account or a cash ISA would be more suitable than a stocks and shares ISA. 

However, if you do have long-term saving plans, then a stocks and shares ISA would work well compared to other types of investing, as it’s tax-free. 

That being said, if you would like a tax-free alternative take a look at a lifetime ISA as this is also tax free and has good interest rates and a 25% bonus from the government. Take note that this ISA does come with restrictions and you only get the bonus if you use the money to buy your first house or after you turn 60. You can only save up to £4,000 a year into a lifetime ISA and this forms part of your overall £20,000 ISA allowance.