Best fixed rate cash ISAs – earn up to 4.32%
The best fixed rate cash ISAs are returning up to 4.32% on your savings. We look at the top deals for those willing to lock their cash away and earn guaranteed tax-free gains
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Currently, the best fixed rate cash ISAs can help you grow your tax-free savings and are returning up to 4.32% on your cash.
ISAs are some of the best savings vehicles you can use in the UK, as they allow for up to £20,000 of tax-free savings a year.
With a multitude of ISA reforms in the Autumn Budget and the end of the tax year just a few weeks away, it might be a good idea to secure favourable rates now by locking your savings away into a fixed rate cash ISA.
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However, make sure that you’re getting an inflation-busting savings rate; otherwise, you’ll be losing money in real terms.
If you're seeking the best cash ISA with a fixed rate, we list the top options currently on the market. We look at how many ISAs you can have in another guide.
Best 1 year fixed rate cash ISAs
If you’re willing to lock away your money for one year without withdrawing any of it, you could grow your savings by up to 4.23%.
Account | AER | Minimum investment | Notes |
|---|---|---|---|
4.23% | £1,000 | Open online | |
4.22% | £0 | Open online | |
4.21% | £1 | Open online, in person, over the phone or via post |
Best cash ISAs up to 18 months
If you are after an account that keeps your money growing for up to 18 months, you can earn up to 4.2% using one of the following savers.
Account | AER | Minimum investment | Notes |
|---|---|---|---|
4.2% | £5,000 | Open online, in person, over the phone or via post | |
4.06% | £5,000 | Open online | |
4,05% | £1,000 | Open online |
Best 2 year cash ISAs
Two-year fixed rate ISAs are a good option for people who want to grow their money in the medium term without worrying about micro-managing their savings. Savers can earn up to 4.21%.
Account | AER | Minimum investment | Notes |
|---|---|---|---|
4.21% | £0 | Open online | |
4.2% | £1,000 | Open online | |
4.2% | £1,000 | Open online, in person, over the phone or via post |
Best 3 year fixed rate ISAs
Savers who are willing to lock their cash away for three years can access interest rates of up to 4.13% by using one of the following savings accounts.
Account | AER | Minimum investment | Notes |
|---|---|---|---|
4.13% | £0 | Open online | |
4.12% | £1,000 | Open online | |
4.12% | £1,000 | Open online |
Best 4 year fixed rate ISAs
If you’re putting away your money for four years, then you can get just under 4% returns using one of the following accounts.
However, it is worth bearing in mind that if you are willing to keep your money in savings for an extra year, you can access a higher interest rate of 4.3%.
Account | AER | Minimum investment | Notes |
|---|---|---|---|
3.91% | £2,000 | Open online, in person or via post | |
3.85% | £5,000 | Open online | |
3.8% | £1 | Open via the Zopa App |
Best 5 year fixed rate ISAs
A five-year fixed-rate ISA is a good option for long-term savers who are trying to save towards a financial goal in the future.
The following accounts allow for up to 4.32% returns on your savings.
Account | AER | Minimum investment | Notes |
|---|---|---|---|
4.32% | £1,000 | Open online, in person, over the phone or via post | |
4.31% | £1,000 | Open online | |
4.3% | £1,000 | Open online, in person, over the phone or via post |
Get the latest financial news, insights and expert analysis from our award-winning MoneyWeek team, to help you understand what really matters when it comes to your finances.

Oojal has a background in consumer journalism and is interested in helping people make the most of their money.
Oojal has an MA in international journalism from Cardiff University, and before joining MoneyWeek, she worked for Look After My Bills, a personal finance website, where she covered guides on household bills and money-saving deals.
Her bylines can be found on Newsquest, Voice.Cymru, DIVA and Sony Music, and she has explored subjects ranging from politics and LGBTQIA+ issues to food and entertainment.
Outside of work, Oojal enjoys travelling, going to the movies and learning Spanish with a little green owl.