Dudley Building Society 30 Day Notice ISA Online Review

A competitive cash ISA from Dudley Building Society. It ranks 47th of 137 cash ISAs we track.

Variable rate

3.70%AER

Protection

FSCS£120,000

Min balance

£100

Max balance

£500,000

Access

30 Days

Interest paid

Annually

Transfers in

Accepted

How It Stacks Up

Ranks 47th of 137

Cash ISAs we track

Above average
This account 3.70%
UK CPI (Aug 2026)
3.10%
Pays 0.60% more
Average cash ISA
2.98%
Pays 0.72% more
Best cash ISA
4.87%
Pays 1.17% less

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

Compare cash ISAs

Pros and cons

  • Pro: New and existing savers
  • Con: The rate is variable, so it can go down

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 30 days’ notice again or pay the 30 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 30 Day Notice ISA Online.

Estimated interest

£1,000 saved

£37.00

At 3.7% AER

£5,000 saved

£185

At 3.7% AER

£10,000 saved

£370

At 3.7% AER

£500,000 saved

£18,500

At 3.7% 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 30 Day Notice ISA Online

Jonny PeaseCo-Founder, DepositScout

Dudley Building Society's 30 Day Notice ISA Online pays 3.70%, which sits 1.42% below the current Cash ISA market leader at 5.12%, and is below the market average, so this is not a rate I would lead with. It does at least beat August 2026 CPI of 3.1% by 0.60%, meaning your money grows in real terms, which is something. The 30-day notice period is the main practical catch, and if you want easier access at a better rate, Tembo's Standard Cash ISA is paying 4.00% with a £100 minimum, similar to this account.

Compare Cash ISAs

2 alternatives to Dudley Building Society's 30 Day Notice ISA Online

Same type of account, closest on rate.

Common questions about the 30 Day Notice ISA Online

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