Best cash isa rates
Tax-free interest within your annual ISA allowance.
We track 19 providers for this comparison, not the whole market — so the best rate available in the UK may be higher than the best shown here. Every rate we do show was read from the provider’s own page.
33 accounts
Ranked by AER| Account | AER | Access | Min | 12-month trend | Provider & protection | |
|---|---|---|---|---|---|---|
5 Year Fixed Rate Cash ISA Checked 30 Sep 2026 | 5.25% | Fixed | Not stated | Shawbrook Bank Limited · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
2 Year Fixed Rate Cash ISA Checked 30 Sep 2026 | 4.99% | Fixed | Not stated | Shawbrook Bank Limited · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
1 Year Fixed Rate Cash ISA Checked 30 Sep 2026 | 4.83% | Fixed | Not stated | Shawbrook Bank Limited · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
Cash ISA Sample figure | 4.77% | Instant | £1 | — | Provider details unverified | View account › |
Cash ISA Sample figure | 4.72% | Instant | £1 | — | Provider details unverified | View account › |
5 Year Fixed Rate Cash ISA Checked 30 Sep 2026 | 4.70% | Fixed | Not stated | Nationwide Building Society · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
Cash ISA Sample figure | 4.70% | Instant | £1 | — | Provider details unverified | View account › |
3 Year Fixed Rate Cash ISA Checked 30 Sep 2026 | 4.65% | Fixed | Not stated | Nationwide Building Society · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
Cash ISA Sample figure | 4.65% | 3 withdrawals/yr | £500 | — | Provider details unverified | View account › |
Cash ISA Sample figure | 4.64% | Instant | £1 | — | Provider details unverified | View account › |
Cash ISA Sample figure | 4.58% | Instant | £1 | — | Provider details unverified | View account › |
2 Year Fixed Rate Cash ISA Checked 30 Sep 2026 | 4.55% | Fixed | Not stated | Nationwide Building Society · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
Cash ISA Sample figure | 4.50% | Instant | £1 | — | Provider details unverified | View account › |
1 Year Fixed Rate Cash ISA Checked 30 Sep 2026 | 4.50% | Fixed | Not stated | Nationwide Building Society · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
Smart Cash ISA Checked 30 Sep 2026 | 4.50% | Instant | Not stated | Provider details unverified | View account › | |
Cash ISA Sample figure | 4.45% | Instant | £1 | — | Provider details unverified | View account › |
Easy Access ISA Sample figure | 4.35% | Instant | £1 | — | Provider details unverified | View account › |
Easy Access ISA Sample figure | 4.34% | Instant | £1,000 | — | Shawbrook Bank Limited · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › |
Easy Access ISA Sample figure | 4.31% | Instant | £1,000 | — | OneSavings Bank plc · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › |
Cash ISA Sample figure | 4.30% | Instant | £1 | — | Provider details unverified | View account › |
Easy Access ISA Sample figure | 4.30% | Instant | £1 | — | Provider details unverified | View account › |
Easy Access ISA Sample figure | 4.25% | Instant | £1 | — | Provider details unverified | View account › |
Easy Access ISA Sample figure | 4.20% | Instant | £500 | — | Santander UK plc · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › |
Online ISA Checked 30 Sep 2026 | 4.15% | Instant | Not stated | Cynergy Bank plc · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
7 Year Fixed Rate Cash ISA Checked 30 Sep 2026 | 4.14% | Fixed | Not stated | Shawbrook Bank Limited · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
Cash ISA Sample figure | 4.10% | Instant | £1 | — | Nationwide Building Society · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › |
Online Cash ISA Sample figure | 4.05% | Instant | £1 | — | Provider details unverified | View account › |
3 Year Fixed Rate Cash ISA Checked 30 Sep 2026 | 3.80% | Fixed | Not stated | Shawbrook Bank Limited · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
Instant Cash ISA Sample figure | 3.75% | Instant | £1 | — | Barclays Bank UK PLC · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › |
1 Year Triple Access ISA Checked 30 Sep 2026 | 3.30% | Limited access | Not stated | Nationwide Building Society · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
Easy Access Cash ISA Checked 30 Sep 2026 | 2.70% | Instant | Not stated | Shawbrook Bank Limited · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › | |
Fixed Term Cash ISA Maturity Sample figure | 1.20% | Tax-free | £1 | — | Nationwide Building Society · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › |
Easy Access ISA 2 Checked 30 Sep 2026 | 1.20% | Instant | Not stated | Nationwide Building Society · FSCS protected
Eligible deposits are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per eligible person, per authorised firm, subject to eligibility and FSCS rules. The limit applies to the total held across every brand sharing that firm's authorisation, not to each brand separately. | View account › |
Information only, not financial advice — we do not consider your circumstances. 14 of 33 rates below were read from the provider's own page; the rest are illustrative sample figures. Check the provider’s own terms before applying.