Dudley Building Society 120 Day Notice ISA Online Review

A competitive cash ISA from Dudley Building Society. It ranks 36th of 137 cash ISAs we track.

Fixed rate

3.80%AER

Protection

FSCS£120,000

Min balance

£100

Max balance

£500,000

Access

120 Days

Interest paid

Annually

Transfers in

Accepted

How It Stacks Up

Ranks 36th of 137

Cash ISAs we track

Above average
This account 3.80%
UK CPI (Aug 2026)
3.10%
Pays 0.70% more
Average cash ISA
2.98%
Pays 0.82% more
Best cash ISA
4.87%
Pays 1.07% less

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

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A Good Fit For

  • Pro: New and existing savers

Good to Know

Further information about ISAs can be obtained on the HM Revenue & Customers website www.hmrc.gov.uk. We accept ISA transfers into this account. To find out more about our ISA transfer procedure, visit our ISA transfers page linked below. https://www.dudleybuildingsociety.co.uk/savings/existing-customers/isa-transfers/. If you give notice to withdraw money from your account, you will have 7 days to withdraw the requested amount once your notice expires. If you do not make a withdrawal within 7 days, you will be required to give 120 days’ notice again or pay the 120 day interest penalty for instant access to your funds.

Please verify all details with the provider – see our Disclaimer

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Estimated returns with Dudley Building Society's Cash ISA

What you could earn with Dudley Building Society's 120 Day Notice ISA Online.

Estimated interest

£1,000 saved

£38.00

At 3.8% AER

£5,000 saved

£190

At 3.8% AER

£10,000 saved

£380

At 3.8% AER

£500,000 saved

£19,000

At 3.8% 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 Dudley Building Society 120 Day Notice ISA Online

Jan WatermannCo-Founder, DepositScout

Dudley Building Society's 120 Day Notice ISA pays 3.80%, which sits below the Cash ISA market average and 1.32% behind the category leader at 5.12%, so this is not a rate I would chase if maximising returns is the priority. It does beat August 2026 CPI of 3.1% by 0.70%, which at least preserves real value. The real catch is the 120-day notice period, which limits flexibility. If you want something similar but easier to access, Tembo's Standard Cash ISA currently pays 4.00%.

Compare Cash ISAs

2 alternatives to Dudley Building Society's 120 Day Notice ISA Online

Same type of account, closest on rate.

Common questions about the 120 Day Notice ISA Online

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