Barclays Instant Cash ISA rate

It’s always good to research Cash ISA rates. Check out the latest instant-access Cash ISA rate offered by Barclays.

Last updated: Sep 12, 2025

Next review on: Oct 09, 2025

1.10% AER

( min. balance)

4.20% AER1

1.10% AER

( min. balance)

3.04% AER1

Chart used for illustrative purposes. Rates used and offered are for new customers only, and these rates may change. Why we’ve compared this product.

18+ UK resident only

Chip does not provide tax advice. Tax treatment depends on individual circumstances and may be subject to change in the future. Your Chip Cash ISA is a cash ISA provided by ClearBank Limited. ISA limits apply. Deposit up to £20k per tax year.

Barclays Instant Cash ISA rate source: https://www.barclays.co.uk/savings/isas/instant-cash-isa/.

T&Cs apply. 3.04% (AER variable tracker), comprised of 3.00% gross interest which tracks 1.00% under the Bank of England base rate. See terms and conditions. AER stands for Annual Equivalent Rate and illustrates what the interest rate would be if interest was paid and compounded once each year.

18+ UK resident only

Chip does not provide tax advice. Tax treatment depends on individual circumstances and may be subject to change in the future. Your Chip Cash ISA is a cash ISA provided by ClearBank Limited. ISA limits apply. Deposit up to £20k per tax year.

Barclays Instant Cash ISA rate source: https://www.barclays.co.uk/savings/isas/instant-cash-isa/.

1 4.20% AER (variable tracker). Comprised of an underlying standard AER of 3.04% (3.00% gross, which tracks 1.00% under the Bank of England base rate), plus a 1.16% AER boost applied for 12 months from the day you open the account.  Chip account required. AER stands for Annual Equivalent Rate and illustrates what the interest rate would be if interest was paid and compounded once each year. For more information see the Cash ISA Summary Box

Initial deposit (or ISA transfer)
£
Monthly deposits
£
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Interest rate (AER%)
4.20%
Value after 1 year
result
Interest rate (AER%)
rate
Value after 1 year
result

* Barclays offers 1.10% on balances higher than , and on balances below.

You could earn result more after a year with Chip.
Initial deposit (or ISA transfer)
£
Monthly deposits
£
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Interest rate (AER%)
3.04%
Value after 1 year
result
Interest rate (AER%)
rate
Value after 1 year
result

* Barclays offers 1.10% on balances higher than , and on balances below.

You could earn result more after a year with Chip.
This calculator has been created for illustrative purposes and is an estimation.

What is the current Barclays Instant Cash ISA rate?

  • Barclays currently offer an Instant Cash ISA rate of 1.11% AER / 1.10% tax-free p.a.
  • Interest on this account is paid monthly.
  • You can open a Barclays instant Cash ISA from £1, and can withdraw money from this account at any time with no penalty. 

Important information

This comparison is intended for informational purposes only. We have selected the Barclays Instant Cash ISA as the most comparable product to the Chip Cash ISA for new customers. Barclays offers a range of other ISA products that may be better suited to your needs, including fixed-rate and premier accounts. The best product for you depends entirely on your personal financial circumstances. We strongly recommend that you conduct your own research or seeking financial advice before making any decisions.

What is an instant
Cash ISA?

What is an Instant Cash ISA?

An Instant Cash ISA is a savings account that lets you earn interest on your money without paying tax on the interest you receive, while still giving you the freedom to access your funds when you need them.

Is this account it right for me?

If you’re looking for a flexible way to save and make the most of your tax-free allowance, an Instant Cash ISA could be the perfect choice for you.

How to research and compare Cash ISA accounts

Tips for comparing Cash ISAs

When searching for the right instant Cash ISA for you, it’s important to choose an account that suits both your savings habits and your tax-free allowance goals. 

Explore a range of providers

Don’t just stick to your usual high street banks. Check online banks, building societies and app-based fintech providers as they often offer competitive rates on instant Cash ISAs. Compare interest rates, account features, and ease of access - whether it’s via an app, online banking or branch visits.

Understand the account rules

Even with ‘instant access’, some ISAs may have restrictions, like limits on withdrawals, minimum deposit amounts or when interest is paid. Read the account terms carefully so you understand how it works. Remember; withdrawing money from an ISA could affect your annual ISA allowance - so know the potential impacts before you take funds out.

Look at bonus and introductory rates

Some providers offer introductory or bonus rates to bring in new savers. Whilst some might be initially higher, assess the duration of the boosted rate and how competitive the rate remains afterwards. Evaluate the long-term viability of the account beyond the bonus rate.

Use financial tools to assess your options

There are a variety of online financial tools that can help you quickly understand the rate of your returns. Use our Interest rates calculator to see how your money could grow over time based on interest rates, deposits, and length of time.

Earn up to 4.20% with a Chip Instant Cash ISA

New customers earn a boosted 4.20% AER (variable tracker) for 12 months. Then the standard rate of 3.04% AER (variable tracker). T&Cs apply.

Is it worth having a Cash ISA?

An instant Cash ISA can be a smart way to grow your savings while keeping them accessible. But, like any other financial product, it’s worth weighing up the benefits and drawbacks before you decide.

Advantages

Tax-free interest:

All the interest you earn is free from UK income tax, helping you make the most of your savings2.

Easy access to funds:

Some accounts offer immediate, penalty-free access to your money, giving you extra flexibility when you need it.

Flexible saving options:

Many providers allow you to save regularly or deposit lump sums, giving you control over how you build your balance.

Variety of providers:

From high street banks to app-only fintechs, you can shop around for the best rates, features and accessibility to suit you.

Disadvantages

Lower rates vs fixed ISAs:

Instant Cash ISAs often have lower interest rates compared to fixed-rate ISAs or notice accounts.

ISA allowance limits:

You can only pay in up to the annual ISA allowance each year (£20,000 for 25/26), so large savers may be restricted.

Possible withdrawal restrictions:

Some accounts limit the number of withdrawals or reduce your interest rate if you take money out too often.

Variable rates:

Interest rates can change at any time, so your returns may go up or down.

2Chip does not provide tax advice. Tax treatment depends on individual circumstances and may be subject to change in the future.

People also ask

Common Cash ISA questions

Is it worth having a Cash ISA anymore?
A Cash ISA is still a smart choice because it lets your savings grow tax-free, no matter how much interest you earn.

With competitive rates now available, it can be just as rewarding as other savings accounts while protecting you from future tax changes. It’s a simple, secure way to make the most of your money.
Are Cash ISAs being phased out?
No, Cash ISAs are not being phased out.

They remain a popular, government-backed way to save tax-free, and current proposals only look at adjusting allowances, not removing them. For savers, they’re still a secure and future-proof option.
Do you pay tax on a Cash ISA?
No, you don’t pay any tax on the interest earned in a Cash ISA. All the returns are completely tax-free, regardless of your income level. That makes them a simple way to protect your savings from future tax changes.

Still have questions?