Cash ISA

The Co-operative Bank Cash ISA Review

A cash ISA from The Co-operative Bank. It ranks 123rd of 137 cash ISAs we track.

Headline rate

1.40%AER

Rate checked Oct 2026Got this account? Leave a review

Protection

FSCS£120,000

Min balance

£1

Max balance

£1,000,000

Access

Instant

Interest paid

Annually

Transfers in

Accepted

How It Stacks Up

Ranks 123rd of 137

Cash ISAs we track

Well below average
This account 1.40%
UK CPI (Aug 2026)
3.10%
Pays 1.70% less
Average cash ISA
2.98%
Pays 1.58% less
Best cash ISA
4.87%
Pays 3.47% less

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

A better-paying alternative

Trading 212 bank logo

Trading 212

Cash ISA

4.60%

AER

  • Pays 3.20% more than this The Co-operative Bank account
  • Includes a 1.00% bonus for 12 months, then 3.60%
Compare Cash ISAs

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A Good Fit For

  • Pro: New and existing savers
  • Pro: Savers who want instant access

Good to Know

Instant access

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Estimated returns with The Co-operative Bank's Cash ISA

What you could earn with The Co-operative Bank's Cash ISA.

Estimated interest

£1,000 saved

£14.00

At 1.4% AER

£5,000 saved

£70.00

At 1.4% AER

£10,000 saved

£140

At 1.4% AER

£1,000,000 saved

£14,000

At 1.4% 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 The Co-operative Bank Cash ISA

Jan WatermannCo-Founder, DepositScout

The Co-operative Bank's Cash ISA pays 1.40%, which is below the market average for Cash ISAs and 3.72% behind the category leader at 5.12%, so this is hard to recommend on rate alone. At 1.40% it also sits 1.70% below CPI inflation of 3.1% (Aug 2026), meaning your money is losing real value. One practical catch worth noting is that this is not a flexible ISA, so any money you withdraw loses its tax-free status permanently unless you replace it within the same tax year's unused allowance. Alternatives like the Moneybox Open Access Cash ISA at 3.80% offer instant access at a significantly better rate.

Compare Cash ISAs

2 alternatives to The Co-operative Bank's Cash ISA

Same type of account, closest on rate.

Common questions about the Cash ISA

D

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Nationwide FlexSaver Rate Down
4.20% AER
4.75%
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