





- 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.
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.
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.
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.
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.
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.
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.
People also ask
Common Cash ISA questions
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.
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.