Five reasons to use an ISA

Let’s dive into five reasons why low-cost, little effort ISA investing is a savvy move.

Authored on
11 Feb 2026
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Category
Why invest?
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Read time
  4 minute read

1) Tax-free goodness

ISAs are ‘tax wrappers’ which shield your money from UK capital gains and dividend tax.

You’ll get to keep any investment growth you make, and any interest or dividends made from the cash and investments is also free from tax! This could help you reach your investing goals faster than an account without tax-free benefits, especially as the main tax allowances and thresholds stay frozen.

2) £20,000 a year - yes, please!

Every new tax year, you get a brand-new ISA allowance. The main allowance is £20,000 for adults and this includes the £4,000 you can pay into a Lifetime ISA each tax year.

If you don’t use your allowance by 5th April each year, it won’t roll over to the next year, so make sure you make the most of it before then!

3) Flexibility at your fingertips

You can take cash out of ISAs whenever you need to, but you can also pay it back in if you have spare allowance.

Just remember that Lifetime ISAs have their own rules for taking money out – if you don’t meet them, you’ll face a hefty 25% government penalty charge on what you withdraw, meaning you could get back less than what you pay in.

4) Mix and match ISA styles

Get creative! For example, you could pay into an instant access cash ISA now to boost your emergency fund, as well as a Dodl investment ISA for the long term. You can pay into multiple ISAs of the same type in a tax year, provided you don’t bust the overall ISA allowance (excluding Lifetime ISAs).

5) Start small, think big

While the ISA allowance is generous, saving and investing isn’t just for people with a lump sum to put away. With the Dodl investment ISA, you can get investing for the long term with a direct debit of as little as £25 a month.

So, feeling readier than ever to start investing?

Get started today


🔔 Remember, investing carries risk and nothing in this article should be taken as advice - Dodl doesn't give advice, but we do hope the info is helpful!



It's important to know

You have to be a UK resident for tax purposes to open an account with Dodl.

Investing is an opportunity to grow your money, typically outperforming cash savings over the long term. However, investing comes with risk as well as reward, and the value of your investments can go down as well as up. Tax benefits depend on your circumstances and tax rules may change. Any information we provide is to help with your research and isn't financial advice. 

Dodl doesn’t offer any advice so if you’re not sure about the risks involved with investing, you should speak to a qualified financial adviser.