# Cash ISA vs Stocks & Shares ISA

**URL:** <https://community.investengine.com/t/cash-isa-vs-stocks-shares-isa/2485>\
**Category:** Our News\
**Created:** [3 July 2025 10:45 UTC](https://community.investengine.com/t/cash-isa-vs-stocks-shares-isa/2485 "2025-07-03T10:45:41Z")\
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**Author:** ![InvestEngine-News](https://dub1.discourse-cdn.com/flex017/user_avatar/community.investengine.com/investengine-news/32/575_2.png) [@InvestEngine-News](https://community.investengine.com/u/InvestEngine-News)\
**Post date:** [3 July 2025 10:45 UTC](https://community.investengine.com/t/cash-isa-vs-stocks-shares-isa/2485/1 "2025-07-03T10:45:42Z")

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Originally published at: [Cash ISA vs Stocks and Shares ISA: which is right for you?](https://blog.investengine.com/cash-isa-vs-stocks-shares-isa/)

Not sure whether to choose a Cash ISA or a Stocks & Shares ISA? Comparing the tax benefits as well as the relative risks and potential returns can help you pick the right option for your goals.

Whether you’re saving for a rainy day or planning long-term, choosing the right type of ISA could make a big difference to your financial future.&nbsp;

Here’s how Cash ISAs vs Stocks and Shares ISAs compare, as well as what might change from July 2025 that could affect your decision.

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## **What is an ISA?**

An ISA, or Individual Savings Account, is a popular way to save and invest money tax-free in the UK.

Each tax year, adults can put up to £20,000 into an ISA. You won’t pay any income tax on interest earned or capital gains tax on investment growth, making it a powerful tool for building long-term wealth.

There are a few different types of ISA, including:

- Cash ISAs – savings accounts where you earn tax-free interest.
- Stocks and Shares ISAs – where you can invest in things like ETFs, shares, or bonds.
- Lifetime ISAs (LISAs) – designed to help you buy your first home or save for retirement.
- Junior ISAs – which offer tax free savings for under 18s.

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## **So, what is a Cash ISA?**

A Cash ISA is a savings account where the interest you earn is tax-free. You can open one if you’re a UK resident aged 16 or over.

There are two main types: **instant access** , which lets you withdraw money whenever you like, and **fixed-rate** , which locks your money away for a set time but pays a bit more.&nbsp;

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## **And, what is a Stocks & Shares ISA?**

A Stocks & Shares ISA lets you invest your money rather than just save it. You can buy shares, bonds and [ETFs](https://investengine.com/etfs/) – all within a tax free wrapper, which means that any dividends or capital gains are free from UK tax.&nbsp;

Unlike a Cash ISA, your returns aren’t fixed. Your investments can grow over time. For example, if you invest in a fund that tracks the S&P 500, like [Invesco’s SPXP](https://investengine.com/etfs/invesco/spxp/), you can target returns of about 10% – the index’s historical average annual return before inflation.

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 ![](https://europe1.discourse-cdn.com/flex017/uploads/investengine/original/2X/0/0c1c4d344a8c213bbcc94d4aca00e7a25cbbd43f.png)

_Source: InvestEngine. Past performance is not a guarantee of future returns.&nbsp;_

While that can be attractive, of course past performance is not a guarantee of future returns and remember that investment value can go up as well as down, and you may get less than what you’ve invested.&nbsp;

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## **Can you use both types of ISAs?**

Yes, you can. But the total amount you put in across all your ISAs **must not** exceed your annual ISA allowance, which is £20,000 for the 2025/26 tax year.

That means you could, for example, put £4,000 into a Cash ISA and £7,000 into a Stocks & Shares ISA to still have a balance of £9,000 for the rest of the tax year.&nbsp;

If your provider offers a **flexible ISA** , you can even withdraw money and put it back in within the same tax year without it counting towards your £20,000 limit- giving you extra breathing room if your plans change.

You can also transfer money between ISAs. If you’ve already put money into a Cash ISA but decide you want to invest instead, you can transfer those funds into an InvestEngine Stocks & Shares ISA without it affecting your allowance.&nbsp;

_ISA transfers may have implications for your investments. Please consider all factors before deciding to transfer._

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[Open an InvestEngine ISA](https://investengine.com/isa/)

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## **Which one is better?**

Well, that entirely depends on your goals and risk appetite. Here’s a quick comparison:&nbsp;

| **Are you looking for…** | **Cash ISA** | **Stocks & Shares ISA** |
| Lower risk of potential losses of your investment? | ✅ Yes | ❌ No |
| Potentially higher returns? | ❌ No | ✅ Yes |
| An ISA that’s generally better for rainy day savings? | ✅ Yes | ❌ No |
| An ISA that’s generally better for long-term investing? | ❌ No | ✅ Yes |
| A way to save without investing your money? | ✅ Yes | ❌ No |

If you’re looking for less risk and quick access to your money, a Cash ISA is probably the better choice.&nbsp;

For longer-term goals and the potential for higher returns, a Stocks & Shares ISA might be the one, if you’re happy to accept some risk.

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# **What’s changing with Cash ISAs?**

From July 2025, the government is expected to [cut the maximum you can pay into a Cash ISA](https://www.cityam.com/reeves-to-cut-cash-isa-allowance/) each year. While the full ISA allowance [will remain at £20,000](https://www.independent.co.uk/money/isa-tax-limit-rachel-reeves-b2754221.html), the portion that can go into cash could drop to as low as £4,000.

This move is designed to push more savers into investing and support UK companies. But for cautious savers, it limits how much can be saved in low-risk, tax-free savings.

If you’ve relied on Cash ISAs in the past, now might be the time to explore other options like Stocks & Shares ISAs or flexible accounts.

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**_Important information_**

_Capital at risk. The value of your portfolio with InvestEngine can go down as well as up and you may get back less than you invest. ETF costs also apply._

_This communication is provided for general information only and should not be construed as advice. If in doubt you may wish to consult a professional adviser for guidance._

_Tax treatment depends on personal circumstances and is subject to change, and past performance is not a reliable indicator of future returns._
