Cash ISA

Aldermore 1 Year Fixed Rate Cash ISA Review

A competitive one-year cash ISA from Aldermore, with a £1,000 minimum deposit. It ranks 12th of 53 one-year cash ISAs we track.

Fixed rate · 1 year

4.79%AER

Rate checked Oct 2026Got this account? Leave a review

Protection

FSCS£120,000

Min balance

£1,000

Max balance

£20,000

Access

1 Year

Interest paid

Monthly/On maturity

Transfers in

Accepted

How It Stacks Up

Ranks 12th of 53

1-year cash ISAs we track

Above average
This account 4.79%
UK CPI (Aug 2026)
3.10%
Pays 1.69% more
Average 1-year cash ISA
4.42%
Pays 0.37% more
Best 1-year cash ISA
4.95%
Pays 0.16% less

Inflation: ONS. Averages and best rates: accounts on DepositScout.

Compare cash ISAs

A Good Fit For

  • Pro: New and existing savers
  • Pro: Savers who want a monthly income
  • Pro: Flexible: take money out and put it back in the same tax year without using more allowance

Worth Weighing Up

  • Con: You need at least £1,000 to open it

Good to Know

Transfers in only at account opening. Deposits only within 14 days of opening. Early access may incur an interest deduction. Max subscription is the annual ISA allowance.

Please verify all details with the provider – see our Disclaimer

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Estimated returns with Aldermore's Cash ISA

What you could earn with Aldermore's 1 Year Fixed Rate Cash ISA.

Estimated interest

£1,000 saved

£47.90

At 4.79% AER

£5,000 saved

£240

At 4.79% AER

£10,000 saved

£479

At 4.79% AER

£20,000 saved

£958

At 4.79% AER

Estimated over one year, if the rate stays the same and interest is left in. Amounts outside the account's minimum or maximum aren't shown.

Our Expert Opinion on Aldermore 1 Year Fixed Rate Cash ISA

Jonny PeaseCo-Founder, DepositScout

Aldermore's 1 Year Fixed Rate Cash ISA pays 4.79%, which is above the cash ISA market average but still 0.46% behind the category leader at 5.25%, so it is solid without being the best available. It beats August 2026 CPI of 3.1% by 1.69%, meaning your money grows in real terms. The ISA wrapper suits anyone sheltering savings from tax, though you need at least £1,000 to open and the £20,000 cap means higher balances need a separate account. Money is locked for one year, which is the main catch.

Compare Cash ISAs

2 alternatives to Aldermore's 1 Year Fixed Rate Cash ISA

Same type of account, closest on rate.

Common questions about the 1 Year Fixed Rate Cash ISA

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