ISA savings accounts

Discover the best ISA investments savings accounts

Updated: 01.09.2026

Quick Rates Review

Compare top financial options at a glance. Comprehensive analysis for each listed offer is available further down the page

#
Institution
Rate (APR/APY)
Sum & Term
1
Charter Savings Bank Charter Savings Bank
0.1% - 4.3%

Flexible Amount

Flexible Term

2
Al Rayan Bank Al Rayan Bank
2.3%

Up to $50

Flexible Term

3
Leeds Building Society Leeds Building Society
2.3% - 4.6%

Up to $1

Flexible Term

4
Teachers Building Society Teachers Building Society
3.5%

$100 - $250,000

Flexible Term

5
The Loughborough Building Society The Loughborough Building Society
3.55% - 4.55%

Up to $1

Flexible Term

6
Shawbrook Bank Shawbrook Bank
3.56% - 4.25%

Flexible Amount

Flexible Term

7
Aldermore Bank Aldermore Bank
3.90% - 4.35%

Up to $1,000

Flexible Term

8
OakNorth Bank OakNorth Bank
3.92% - 4.35%

Flexible Amount

365 - 1095 days

9
Kent Reliance Kent Reliance
4.25% - 4.63%

Flexible Amount

Flexible Term

Quick Expert Insights

Interest Rates
Average:3.04%
Range:0.1% - 4.63%
Product Term
Minimum: 1 year
Maximum: 3 years
Limit / Amount
Min Entry:$1
Max Limit:$250,000
Analysis of 9 offers shows an average rate of 3.04%, with the absolute market maximum reaching 4.63%. Flexible terms from 1 year are available at OakNorth Bank, while OakNorth Bank offers terms up to 3 years . The lowest entry is $1 (via Leeds Building Society).

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Filter By Institution:

Aldermore Bank

ISAs

Rate: 3.90% - 4.35%

Sum: $1,000

📋 Important Terms

1 Year Fixed Rate Cash ISA

2 Year Fixed Rate Cash ISA

3 Year Fixed Rate Cash ISA

30 Day Notice Cash ISA Issue 13

Easy Access Cash ISA Issue 1

Al Rayan Bank

Instant Access Cash ISA (Issue 3)

Rate: 2.3%

Sum: $50

📋 Important Terms

Profits are not subject to UK tax

Applicants must reside in the UK

Charter Savings Bank

ISAs

Rate: 0.1% - 4.3%

📋 Important Terms

Your initial deposit is paid into the Account by Electronic Transfer when it is opened

Interest is credited to the Account

Close Brothers

ISAs

Sum: $10,000 - $2,000,000

Term: 1 years - 5 years

Kent Reliance

ISAs

Rate: 4.25% - 4.63%

Leeds Building Society

ISAs

Rate: 2.3% - 4.6%

Sum: $1

OakNorth Bank

ISAs

Rate: 3.92% - 4.35%

Term: 1 years - 3 years

Shawbrook Bank

ISAs

Rate: 3.56% - 4.25%

Skipton Building Society

ISAs

Teachers Building Society

Cash ISA

Rate: 3.5%

Sum: $100 - $250,000

The Loughborough Building Society

Cash ISA

Rate: 3.55% - 4.55%

Sum: $1

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What are tax-free savings accounts?

In the UK, tax-free savings accounts are designed to help individuals save money without paying tax on the interest earned. The most common types of tax-free savings accounts are ISAs (Individual Savings Accounts).

For what period can I open a fixed-rate ISA?

In the UK, you can open a fixed-rate ISA (Individual Savings Account) for various periods, depending on the provider and the specific product. Fixed-rate ISAs offer a fixed interest rate for the duration of the term, which can help you earn a guaranteed return on your savings. Here are the typical periods for which you can open a fixed-rate ISA:

  • Short-Term Fixed-Rate ISAs: generally range from 6 months to 1 year.
  • Medium-Term Fixed-Rate ISAs: typically range from 1 year to 3 years.
  • Long-Term Fixed-Rate ISAs: often range from 3 years to 5 years.
  • Very Long-Term Fixed-Rate ISAs: some accounts may offer terms of up to 10 years.

What are flexible ISA in the UK?

Flexible ISAs in the UK are a type of Individual Savings Account (ISA) that offer more flexibility compared to traditional fixed or easy access

They allow you to manage your savings in a way that accommodates changes in your financial situation.

You can withdraw funds from a flexible ISA without losing the tax-free status of the account. Unlike traditional ISAs, you can take money out and replace it without affecting your annual ISA allowance.

If you withdraw money, you can usually pay it back into the account within the same tax year without it counting towards your annual ISA contribution limit.

Calculate future income on a 1-year term deposit (example): 

Amount, $ Rate, % Accrued %, $
25,000 4.05% 1,013
25,000 4.10% 1,025
25,000 4.15% 1,038
50,000 4.55% 2,275
50,000 4.60% 2,300
50,000 4.65% 2,325
100,000 5.05% 5,050
100,000 5.10% 5,100
100,000 5.15% 5,150
200,000 4.55% 9,100
200,000 4.60% 9,200
200,000 4.65% 9,300

What are the best ISA with instant access?

The best instant access ISAs in the UK offer flexibility in terms of deposits and withdrawals while providing competitive interest rates. These accounts are suitable for individuals who want easy access to their savings without locking their funds away for a fixed period.

Top Instant Access ISAs in the UK:

  1. Marcus by Goldman Sachs Online Cash ISA
  2. Chase UK Saver ISA
  3. NS&I Direct ISA
  4. Virgin Money Easy Access Cash ISA
  5. Halifax Cash ISA (Online)
  6. TSB Cash ISA

You can also see the similar FAQ at the link: 

Contacts of companies offering the financial services:

Aldermore Bank

Address: Apex Plaza, Forbury Road, Reading, RG1 1AX

Web: www.aldermore.co.uk

SWIFT: ALDBGB2P

Stock: 51WB

Al Rayan Bank

Address: PO Box 12461 Birmingham B16 6AQ

Contact: 0 800 4086 407

Web: www.alrayanbank.co.uk

SWIFT: ARAYGB22

Charter Savings Bank

Address: 2 Charter Court, Broadlands, Wolverhampton WV10 6TD

Contact: 0800 111 6768

Web: www.chartersavingsbank.co.uk

Close Brothers

Address: 10 Crown Place

Contact: 0800-588-40-64

Web: www.closebrothers.com

SWIFT: CBRLGB2LTSY

Stock: CBG

Kent Reliance

Address: Kent

Web: www.kentreliance.co.uk

Leeds Building Society

Address: Building, Hardman Boulevard, Manchester M3 3AQ

Web: www.leedsbuildingsociety.co.uk

OakNorth Bank

Address: 57 Broadwick Street London, WIF 9QS, UK

Contact: 0161-713-4071

Web: oaknorth.co.uk

SWIFT: OAKNGB22

Shawbrook Bank

Address: Lutea House, Warley Hill Business Park, The Drive, Great Warley, Brentwood, Essex, CM13 3BE

Contact: 0345-266-6611

Web: www.shawbrook.co.uk

SWIFT: WWLLGB2B

Skipton Building Society

Address: 71 High Holborn, London WC1V 6EA

Web: www.skipton.co.uk

Teachers Building Society

Address: Teachers Building Society Allenview House, Hanham Rd, Wimborne Minster BH21 1AG

Web: www.teachersbuildingsociety.co.uk

The Loughborough Building Society

Address: 6 High St, Loughborough LE11 2QB

Contact: 01509-610707

Web: www.theloughborough.co.uk

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