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Aldermore 3 Year Fixed Rate Cash ISA Review4.85% AER (Sep 2026)

Cash ISA from Aldermore

Protection

FSCS

Up to £120,000

Min balance

£1,000

Max balance

£20,000

Access

3 Years

Interest paid

Monthly/
Annually

Transfers in

Accepted

  • New and existing savers
  • Savers happy with a £20,000 cap
  • Savers who can deposit at least £1,000

Additional Info

Opened and managed online only; a minimum deposit of £1,000 must be made within 14 calendar days of opening.

Please verify all details with the provider – for more info read our Disclaimer

Estimated returns with Aldermore's Cash ISA

Want to know how much interest you will receive with Aldermore's 3 Year Fixed Rate Cash ISA?

Estimated interest

£1,000 saved

£153

At 4.85% AER

£5,000 saved

£763

At 4.85% AER

£10,000 saved

£1,527

At 4.85% AER

£20,000 saved

£3,053

At 4.85% AER

Estimated over the 36-month term, assuming the rate stays the same and interest stays in the account. Amounts outside this account's minimum or maximum balance are left out.

Our Expert Opinion on Aldermore 3 Year Fixed Rate Cash ISA

This account suits someone who wants to shelter a lump sum from tax and is comfortable locking it away for three years at 4.85% AER. Transfers in are accepted, so it works well if you want to consolidate existing ISA money into a competitive fixed rate. The main catch is the early access penalty: withdrawals are allowed but you forfeit 180 days of interest, which is a meaningful hit if your circumstances change. If you want to shop around, eToro's Cash ISA is currently showing 4.87% and Tandem Bank matches Aldermore at 4.85%.

Compare Cash ISAs

3 alternatives to Aldermore's 3 Year Fixed Rate Cash ISA

Similar accounts from the same category, closest on rate.

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