Cash ISAs explained

Types of cash ISAs – should you consider putting money in a cash ISA? 

There are different types of cash ISAs to suit different needs: Whether you want easy access to your money or are willing to lock away your money for a fixed term with an interest rate that won’t change.

Here’s a breakdown of the different types of cash ISAs available and the benefits and considerations to keep in mind for each.

Fixed rate cash ISA – lock in your rate for a set amount of time

If you're looking for certainty, fixed rate cash ISAs let you lock in a competitive interest rate for a set time. You’ll know exactly how much interest you’ll earn tax-free.

✓ Best for: savers who don't need instant access to their money.

✗ This may not be right if: savers want regular access to their savings.

✓ How it works: you agree to leave your money in an ISA for a fixed period (for example 1, 2 or 5 years) in return for a fixed rate of interest.

✓ Things to consider: if your current provider allows withdrawals or if you transfer your ISA to a new provider, you might lose interest or be subjected to paying an early withdrawal fee. 

Easy access ISA – flexible savings

Easy access cash ISAs offer flexibility and access while still helping your money grow. 

✓ Best for: those who want to dip into their savings whilst still receiving tax-free benefits. 

✗ This may not be right if: savers would like the security of a fixed return on their savings.

✓ How it works: you can deposit and withdraw whenever you like up to the annual ISA limit without penalties.

✓ Things to consider: interest rates for easy access ISAs are variable, so could change whilst you have the account open. 

Compare our easy access ISAs to see what suits your savings needs.

Junior ISA (JISA) – tax-free savings for children

Give your little one a head-start with a Junior ISA.

✓ Best for: if you have parental responsibility for a child under 18 and want to build up tax-free savings for their future. 

✗ This may not be right if: savers need access to the savings before the child is 18.

✓ How it works: you can save up to £9,000 per tax year in a Junior ISA and all interest earned is tax-free. The money belongs to the child and can't be accessed until they turn 18.

✓ Things to consider: once the child has their 18th birthday, the Junior ISA automatically converts into an adult ISA in their name, giving them full access to the cash.

View our Junior cash ISA and start your child on their savings journey.

Lifetime ISA (LISA) – save for your first home or retirement

✓ Best for: first-time buyers and people who are looking to add to their retirement savings.

✗ This may not be right if: savers want to buy their home in the next 12 months.

✓ How it works: save up to £4,000 per year and the Government adds a 25% bonus (up to £1,000 per year) on top.

• You can put in up to £4,000 (current ISA limit) each year until you’re 50. You must make your first payment into your LISA before you’re 40.
• Once you turn 50 you will not be able to pay into your Lifetime ISA or earn the 25% bonus. Your account will however still stay open, and your savings will still earn interest or investment returns. 

✓ Things to consider: you must be under 40 to open a LISA, and any withdrawals (except for buying your first home or retirement after 60) comes with a 25% government penalty.

Ready to start saving for your first home or retirement? Take a look at our Lifetime ISA. 

Flexible cash ISA – withdraw and replace funds

✓ Best for: savers who need access to their money but don't want to lose their tax-free benefits.

✗ This may not be right if: savers want a fixed rate of interest.

✓ How it works: withdraw and replace money within the same tax year without it affecting your annual ISA allowance, giving you peace of mind and extra flexibility.

✓ Things to consider: not all providers offer this ISA, so if you think this is a type of cash ISA that suits your savings needs, please speak with providers beforehand.

Notice cash ISA – tax-free savings with a notice for any withdrawals

✓ Best for: savers who don't need immediate access to their cash but still want some sort of flexibility.

✗ This may not be right if: savers are worried about potentially needing access to their money and cannot wait for the notice period for withdrawals.

A notice cash ISA lets you earn a rate whilst giving you the flexibility to withdraw funds after a set notice period. It's a great way to plan ahead while making the most of your savings.

✓ How it works: you need to give notice (for example 30, 60 or 90 days) before withdrawing your money.

✓ Things to consider: withdrawals without notice might result in an interest penalty.

What are the pros and cons of a cash ISA?

If you're considering opening a cash ISA, it's important to weigh up the benefits and draw backs before deciding if it’s the right savings option for you.

Advantages of opening a cash ISA

✓ Tax-free saving - One of the biggest advantages of a cash ISA is that you don’t pay any tax on the interest you earn - no matter how much interest your savings generate.

✓ Good for budgeting - The structure of ISA accounts can support better budgeting habits by encouraging you to separate short-term spending from long-term savings.

✓ Can benefit young adults starting out - Can be ideal for those beginning to save at an early age, as ISAs offer a safe, simple way to grow funds over time, whether that be a LISA (Lifetime ISA) to start saving for a first home or opening a Junior ISA to start saving for your child’s future.

✓ No impact on other tax-free allowances - Using a cash ISA won’t affect your Personal Savings Allowance.

✓ Can complement other savings goals: A cash ISA can sit alongside other saving options, like a regular savings account or savings bond and give you another route to grow your money.

✓ Government protection - Your savings are protected up to £120,000 per provider by the Financial Services Compensation Scheme (FSCS).

Disadvantages of a cash ISA

✗ Limited annual allowance - You can only save up to £20,000 in the current tax year, whereas standard savings accounts don’t have limits.

✗ Restrictions on withdrawals - Some fixed rate ISAs charge penalties if you withdraw before the term ends.

✗ Not all accounts accept previous year transfers.

Is it better to have an ISA or a standard savings account?

If you're debating whether to open a cash ISA or stick with a standard savings account, here’s a side-by-side view of how they compare.

How do I choose the right cash ISA for me?

Choosing the right cash ISA depends on your savings goals, how long you want to save for, and how much access you need to your money. Here are some key things to consider when picking the best ISA for you:

What are you saving for?

Short-term goals (e.g. holidays, emergencies): A cash ISA with easy access might be the best fit, so you can dip into your savings.

Long-term goals (e.g. buying a home or retirement): Consider a Lifetime ISA for the 25% government bonus — just make sure you’re eligible and aware of the rules.

Saving for a child: If you have parental responsibility for the child then a Junior ISA (JISA) helps you build a tax-free amount for their future, which they can access at 18. 

Do you need instant access?

If you want flexibility, an easy access cash ISA lets you withdraw money whenever.

If you can lock your money away, a fixed rate ISA can offer you peace of mind knowing what tax-free interest you can earn in return for keeping your money locked away for a set time.

For a middle ground, a notice ISA could work for you – providing you more flexibility than a fixed-term saving accounts, as long as you give notice in order to access your money.

How to open a cash ISA

Opening a cash ISA is simple:

1. Choose the right cash ISA for you.
2. Compare our best cash ISA rates to find the savings account that suits you.
3. Pop into one of our branches or open an account online, to start your savings journey. Whether you prefer a face-to face experience or the convenience of online saving. We’ve got both.

Please don’t use this guide as advice, you’ll need to consider and make your own decisions. If you have any further questions, we recommend seeking legal and/or financial advice. Cash ISAs are available to individuals ages 18 or over who are a resident in the UK for tax purposes. Deposits in any tax year are subject to the limits set by HM Revenue and Customs (HMRC) and may therefore be subject to change.