What is the best Barclays Fixed Rate ISA?

What is Barclays’s best fixed rate ISA?

Barclays’s current best Fixed Rate ISA is their 1-year Flexible Cash ISA offering 3.85% AER (fixed). But there are other Fixed Rate ISAs offering higher rates than this that are currently on the market. If you’re looking for the top Fixed Rate ISA on the market, it is often worth looking beyond high street banks, as these don’t always offer the most competitive rates.

What are the current Barclays fixed rate ISAs?

Barclays currently offers two Fixed Rate ISAs; their 1-year Fixed Rate ISA and their 18-month Fixed Rate ISA. Once the fixed term has ended on either account, your account will automatically mature into Barclays Cash ISA, which offers a substantially lower interest rate of 1.16% AER (variable).

1. 1 Year Flexible Cash ISA: 3.85% AER/tax-free (fixed). Requires a minimum opening deposit of £1 or £0 if you’re transferring an ISA. Keep in mind that transfer requests must be received within 30 days from the date of account opening. You can top up by as much or as little as you like and make up to three withdrawals during the term, each one of up to 10% of your balance. As this is a fixed-rate account, you’ll be agreeing to lock away your money for a fixed period of 1 year. If you close or transfer the whole balance before the end of this fixed term, you’ll be charged the equivalent of 90 days’ interest. If you are a Premier or Wealth Management customer, you can access the Premier or Wealth version of this account, which offers 4.10% AER/tax-free (fixed). 
2. 18-Month Fixed Rate ISA: 3.85% AER/tax-free (fixed). Requires a minimum opening deposit of £1 or £0 if you’re transferring an ISA. Keep in mind that transfer requests must be received within 30 days from the date of account opening. You can top up by as much or as little as you like and make up to three withdrawals during the term, each one of up to 10% of your balance. As this is a fixed-rate account, you’ll be agreeing to lock away your money for a fixed period of 18 months. If you close or transfer the whole balance before the end of this fixed term, you’ll be charged the equivalent of 90 days’ interest. If you are a Premier or Wealth Management customer, you can access the Premier or Wealth version of this account, which offers 3.90% AER/tax-free (fixed).

You can see Barclays’s full list of Cash ISAs here

Source: Barclays Fixed Rate ISAs. Rates accurate as of June 2025.

Can I withdraw money from a Barclays fixed rate ISA?

Yes, you can withdraw your money from a Barclays Fixed Rate ISA, but if you do this before the fixed term ends you’ll need to close the account and pay an early access charge equivalent to 90 days' interest. Once the fixed term ends, your account will automatically become a Barclays instant access cash ISA with a variable interest rate, which could be substantially lower. 

Can I transfer money into a Barclays Fixed Rate ISA?

Yes, you can transfer money into a Barclays Fixed Rate ISA. The transfer must be done within 30 days of opening the account. 

How to find the best Fixed ISA Rates

Many high-street banks offer Fixed Rate ISAs. Opening an account with them may seem the most straightforward option, but they don’t always offer the top rates. To find the best fixed rate ISAs, compare accounts from different providers, including ones you might not have heard of before. As well as the rate, look at if the provider has excellent customer service, and other factors like an easy-to-use savings app with intuitive features to help you save more.