Best Cash ISA Rates

Find a home for your 2017-18 cash ISA allowance. Compare the best cash ISA rates using our independent Best Buys and whole market search.

Fixed Rate ISAs

Cash ISA - Fixed Rate Bond (Issue 41)
AER

2.00%

Notice/Term

31.07.20

Min. Invest

£2000

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
Cash ISA - Fixed Rate Bond (Issue 41)
AER

2.00%

Notice/Term

31.07.20

Min. Invest

£2000

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
12 Month Fixed Term Cash ISA
AER

1.35%

Notice/Term

12 Month Bond

Expected rate

Min. Invest

£1000

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
2 Year Online Fixed Rate ISA
AER

1.35%

Notice/Term

2 Year Bond

Min. Invest

£500

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
Fixed Rate Cash ISA
AER

1.22%

Notice/Term

1 Year Bond

Min. Invest

£500

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone

Sponsored Products

1 Year Fixed Rate Cash ISA
AER

1.00%

Notice/Term

1 Year Bond

Min. Invest

£1000

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
1 Year Online Fixed Rate ISA
AER

1.10%

Notice/Term

1 Year Bond

Min. Invest

£500

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
1 Year Fixed Rate ISA
AER

0.75%

Notice/Term

1 Year Bond

Min. Invest

£1

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
2 Year Fixed Rate Cash ISA
AER

1.20%

Notice/Term

2 Year Bond

Min. Invest

£1000

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
Loyalty 2 Year Fixed Rate ISA
AER

1.10%

Notice/Term

2 Year Bond

Min. Invest

£1

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
Fixed Rate Cash ISA
AER

1.32%

Notice/Term

2 Year Bond

Min. Invest

£500

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
Fixed Rate Cash ISA
AER

1.42%

Notice/Term

3 Year Bond

Min. Invest

£500

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
3 Year Online Fixed Rate ISA
AER

1.40%

Notice/Term

3 Year Bond

Min. Invest

£500

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
3 Year Fixed Rate Cash ISA
AER

1.25%

Notice/Term

3 Year Bond

Min. Invest

£1000

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
5 Year Online Fixed Rate ISA
AER

1.50%

Notice/Term

5 Year Bond

Min. Invest

£500

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone

Variable Rate ISAs

120 Day Notice Cash ISA
AER

1.21%

Notice/Term

120 Day

Expected rate

Min. Invest

£250

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
Online Cash ISA Plus
AER

1.02%

Notice/Term

None

Min. Invest

£1

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone

Sponsored Products

Flexible Cash ISA
AER

1.00%

Notice/Term

None

Min. Invest

£1

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
AA ISA - Easy Access Issue 12
AER

0.95%

Notice/Term

None

Min. Invest

£100

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
30 Day Notice Cash ISA Issue 7
AER

0.80%

Notice/Term

30 Day

Min. Invest

£1000

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
Flexclusive ISA (Issue 16)
AER

0.75%

Notice/Term

Instant

Min. Invest

£1

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
Instant ISA Saver Issue 12
AER

0.50%

Notice/Term

Instant

Min. Invest

£1

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone
Cash ISA
AER

0.25%

Notice/Term

Instant

Min. Invest

£50000

Transfer In

Yes

Account Opening
  • Online
  • Branch
  • Postal
  • Phone

Our team of experts have chosen those ISAs they believe to be Best Buys. A selection of those, for which we have arranged links are shown above, whilst products shown with a yellow background are sponsored products.

Eligible deposits with UK institutions are protected by the Financial Services Compensation Scheme up to a maximum level of protection of £85,000 per person per institution.

Disclaimer:
All rates subject to change without notice. Please check all rates and terms before investing or borrowing.

Find the Best Cash ISA

Find the best ISA rates for this tax year by comparing the ISA rates in our best buy tables:

How do cash ISAs work?

Interest you earn from a traditional savings account may be subject to income tax. Depending on how much savings interest you earn, up to 45% of any interest you earn may be taxable!

But, cash ISAs are different…

ISA is short for Individual Savings Account. The general principle is this: unlike normal savings accounts or investments, all interest earned from a cash ISA is completely tax-free.

If you earn over £1,000 in interest on other savings, the higher the rate of tax you pay, the more beneficial a cash ISA will be compared with a normal savings account. This table shows the rates you'd need to match a cash ISA with a non-ISA savings account:

Gross rate needed from a normal savings account
Cash ISA Gross Rate Basic Rate Taxpayer (20%) Higher Rate Taxpayer (40%) Additional Rate Taxpayer (45%)
0.75% 0.94% 1.25% 1.36%
1.00% 1.25% 1.67% 1.82%
1.25% 1.56% 2.08% 2.27%
1.50% 1.88% 2.50% 2.73%
2.00% 2.50% 3.34% 3.64%
2.50% 3.13% 4.17% 4.55%

2017-18 ISA allowance

Cash ISAs can only have a maximum amount paid into them in each tax year, which runs between 6 April and the following 5 April.

In the 2017-18 tax year the ISA allowance is £20,000. You must pay your money in before 5 April 2018 to make the most of your 2017-18 ISA limit, and if you don’t use it, you lose it! Tax advantages will depend on your individual circumstances and may change in the future.

Warning If you also have a stocks & shares ISA, an Innovative Finance ISA or a Lifetime ISA, you may not be able to put this much into your cash ISA. Read our ISA guide to find out more, including the limits for investment ISAs and how you can split your money between different types of ISA.

How to transfer a cash ISA

You can transfer your existing cash ISA without losing the tax-free privileges. The two main reasons you’d do this are to:

  • Get a more competitive interest rate
  • Bring all your cash ISA funds together in one place

Here’s how the ISA transfer process works:

  1. Make sure your existing cash ISA doesn’t charge any penalties for transferring to a new provider. If it does, weigh up whether the transfer will be in your interest.
  2. Research the best ISA rates.
  3. Find a new cash ISA that accepts “transfers in”. Note: you can only open one new cash ISA per tax year.
  4. Tell your new cash ISA provider that you wish to transfer an ISA and they will give you a transfer form.
  5. Complete the form and return it to your new provider.
  6. Your new ISA provider will go back to your old bank or building society to get the money transferred.

Under current rules, this entire process should take no longer than 15 working days.

Warning Don't bypass this process by withdrawing your cash from your old ISA and putting it into a new one. If you withdraw cash from an ISA it loses its tax-free treatment. Plus, depending on the size of your savings pot, you may not be able to put all of your money into the new cash ISA if it exceeds your annual ISA allowance.

What next?

Compare the best ISA rates with our independent and unbiased Best Buys:

Our ISA Best Buys include those which allow you to transfer to a new ISA provider; just refer to the column "transfer in".

Download your free guide to ISAs