Compare our best cash ISA rates
Is my money safe?
The FSCS guarantees that the first £120,000 you have saved with a registered bank or building society will be safe even if the business goes bust. However, we can't guarantee that all non-affiliated products on our panel are covered by the FSCS.
44 results found, sorted by highest interest rate. We always order products with our partners first and we may receive a small commission if you click on the deal and then purchase it. Find out how we order our comparisons.
Plum Cash ISA
Term
Instant access
Open with
Any amount
Interest rate
4.66% AER variable on £1+ inc. 2.12% fixed bonus for 12 months
Protection scheme
FSCS
ISA transfers in
Not accepted
Rate includes a Plum bonus of 1.41% AER (variable) if kept for 12 consecutive months and other conditions are met. After 12 months, the rate will be 3.04% AER (variable). Interest on our Cash ISA varies. This is the rate from 30/10/25. ISA rules and T&Cs apply. Plum is not a bank
Tax treatment depends on your personal circumstances and is subject to change
No notice, penalty, or charge applies.
More Information
Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £1 | 2.52% | 4.62% | 2.54% | 4.66% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Age | 18 years |
| Permanent UK Resident |
Best underlying interest rate - no introductory bonus or withdrawal penalties
Tembo Easy Access Cash ISA
Term
Easy access
Open with
£10
Interest rate
4.55% AER variable inc. 1.15% fixed bonus for 12 months
Protection scheme
FSCS
ISA transfers in
Not accepted
No introductory rates or withdrawal penalty charges apply. Tembo savings account holders get free access to the award-winning Tembo mortgage advice service, saving up to £749 fee – subject to holding a minimum balance for 3 months prior to home purchase or remortgage.
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Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £10 | 3.344% | 4.494% | 3.4% | 4.55% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Initial Deposit | £10 |
| Minimum Age | 18 years |
| Permanent UK Resident |
Moneyfarm Cash ISA
Term
Easy access
Open with
£500
Interest rate
4.31% AER variable inc. 0.82% fixed bonus for 12 months
Protection scheme
FSCS
ISA transfers in
Accepted
Rate drops to standard rate after first 12 months. ISA & tax rules apply. Rate includes a Moneyfarm bonus of 0.82% AER (variable) if kept for 12 consecutive months and is for new customers only. No notice, penalty or charge is made for withdrawals however only 3 withdrawals are permitted each calendar year, after the 4th the rate drops to the standard rate.
More Information
Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £500 | 3.49% | 4.31% | 3.49% | 4.31% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Initial Deposit | £500 |
| Minimum Age | 18 years |
| New Money | |
| Permanent UK Resident |
Castle Trust Bank 5 Year Fixed Rate e-Cash ISA
Term
5 years
Open with
£1,000
Interest rate
4.31% AER fixed
Protection scheme
FSCS
ISA transfers in
Accepted
Withdrawals are not permitted. Early closure is permitted (including transferring to another ISA provider) but this will be subject to an interest penalty of 360 days’ interest, which may result in you receiving less money than you originally deposited.
More Information
Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £1,000 | 4.31% | 4.31% | 4.31% | 4.31% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Initial Deposit | £1,000 |
| Minimum Age | 18 years |
| Permanent UK Resident |
Hargreaves Lansdown Easy Access Cash ISA (powered by Shawbrook)
Term
Instant access
Open with
£1
Interest rate
4.3% AER variable
Protection scheme
FSCS
ISA transfers in
Not accepted
No notice, penalty, or charge applies.
More Information
Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £1 | 4.21% | 4.21% | 4.3% | 4.3% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Initial Deposit | £1 |
| Minimum Age | 18 years |
| Minimum Monthly Investment | £1 |
| Permanent UK Resident |
Moneybox Cash ISA
Term
Easy access
Open with
£500
Interest rate
4.26% AER variable inc. 0.81% fixed bonus for 12 months
Protection scheme
FSCS
ISA transfers in
Not accepted
Rate drops to 3.45% after first 12 months. ISA & tax rules apply. A lower interest rate of 0.75% AER (variable) applies whenever your account balance is less than £500. It also applies for the rest of your current 12-month period from your fourth withdrawal. The number of withdrawals permitted will reset on the anniversary of the account opening date.
If more than 3 withdrawals are made in each 12 month period from account opening, the rate will drop to a lower rate from the date of the 4th withdrawal, for the remainder of that 12 month period.
More Information
Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £500 | 3.4% | 4.18% | 3.45% | 4.26% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Initial Deposit | £500 |
| Minimum Age | 18 years |
| Permanent UK Resident |
Investec 1-Year Fixed Rate Cash ISA
Term
1 year
Open with
£1,000
Interest rate
4.2% AER fixed
Protection scheme
FSCS
ISA transfers in
Not accepted
No withdrawals permitted during the term of the account. Closure permitted subject to 90 day interest penalty.
More Information
Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £1,000 | 4.2% | 4.2% | 4.2% | 4.2% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Initial Deposit | £1,000 |
| Minimum Age | 18 years |
| Permanent UK Resident |
Skipton 18 Month Fixed Rate Cash ISA Issue 300.5
Term
18 months
Open with
£5,000
Interest rate
4.2% AER fixed
Protection scheme
FSCS
ISA transfers in
Accepted
Withdrawals are not permitted during the term. Closure is permitted subject to 90 days loss of interest.
More Information
Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £5,000 | 4.2% | 4.2% | 4.2% | 4.2% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Initial Deposit | £5,000 |
| Minimum Age | 18 years |
| Permanent UK Resident |
Castle Trust Bank 2 Year Fixed Rate e-Cash ISA
Term
2 years
Open with
£1,000
Interest rate
4.17% AER fixed
Protection scheme
FSCS
ISA transfers in
Accepted
Withdrawals are not permitted. Early closure is permitted (including transferring to another ISA provider) but this will be subject to an interest penalty of 180 days’ interest, which may result in you receiving less money than you originally deposited.
More Information
Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £1,000 | 4.17% | 4.17% | 4.17% | 4.17% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Initial Deposit | £1,000 |
| Minimum Age | 18 years |
| Permanent UK Resident |
Tesco Fixed Rate Cash ISA
Term
1 year
Open with
£1
Interest rate
4.16% AER fixed
Protection scheme
FSCS
ISA transfers in
Accepted
Withdrawals are not permitted. Closure permitted subject to 90 day interest penalty.
More Information
Rate Tiers
| Gross rate | Gross rate | AER rate | AER rate | |
|---|---|---|---|---|
| Excluding bonus | Including bonus | Excluding bonus | Including bonus | |
| £1 | 4.16% | 4.16% | 4.16% | 4.16% |
Eligibility
| Maximum Age | Unlimited |
| Minimum Initial Deposit | £1 |
| Minimum Age | 18 years |
| Permanent UK Resident |