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Juno Hunt is a savings comparison service from MFG Management Services Limited (registered in the Isle of Man, company number 135041C; registered office Clarendon House, Victoria Street, Douglas, Isle of Man, IM1 2LN), part of Manx Financial Group. We list savings accounts from UK banks and building societies authorised by the Prudential Regulation Authority, and from NS&I, which is backed by HM Treasury. Manx Financial Group also owns Conister Bank: its accounts are ranked by rate alone like every other bank's and labelled "Our group".

Some banks pay us when you open an account through our link. That payment never changes the order of results. We don't give personal advice, and we never hold your money. Rates can change at any time, so check the details with the bank before you apply.

Juno is our mascot. She finds and ranks rates; she doesn't give advice, and neither do we.

Harpenden Building Society 90 Days' Notice (Issue 3): 4.04% AER | Juno Hunt

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Harpenden Building Society

90 Days' Notice (Issue 3)

90 days' notice · Checked 3 Nov 2026, 15:00

4.04%

AER

Above inflation: CPI 3.5%, September 2026

What you'd earn

If you put in (£)

You'd earn about £808.00 in 1 year, before any tax.

Worked out from the AER. Variable rates can change.

The conditions in plain English

Access: 90 days' notice.
Minimum: £1,000
Interest paid: Once a year
Manage by: Branch, Online, Post
Who can apply: No extra conditions beyond the bank's standard checks.
Where we read it: Harpenden Building Society's own page, 3 November 2026

Full details

What Harpenden Building Society's own website says about this account. See it on Harpenden Building Society's website. The rate at the top of this page is the one Juno checked most recently.

Ways to open: Online, Branch and PostFrom Harpenden Building Society's website, checked 3 November 2026
Minimum age: 18 or overFrom Harpenden Building Society's website, checked 3 November 2026
Where you must live: UK residentFrom Harpenden Building Society's website, checked 3 November 2026
Minimum to open: £1,000From Harpenden Building Society's website, checked 3 November 2026
Maximum balance: £250,000From Harpenden Building Society's website, checked 3 November 2026
Notice to withdraw: 90 daysFrom Harpenden Building Society's website, checked 3 November 2026

"Not stated" means neither the bank's Summary Box nor the pages we checked said; it doesn't mean no. The bank's terms and conditions are the full agreement.

Can I open this?

Tick what applies to you to compare it with the conditions the bank states. Nothing you tick leaves this page.

Your age 16 or 17 18 or over

Do you live in the UK? Yes No

Already a Harpenden Building Society customer? Yes No

How you'd like to open it In the app Online In a branch

Account holders I want a joint account

This compares your answers with the conditions the bank states; it isn't a decision. Harpenden Building Society decides who can open the account, and runs its own checks when you apply.

Who holds your money

Deposit-taker: Harpenden Building Society
Incorporated in: United Kingdom
Regulated: Yes, by the Prudential Regulation Authority and Financial Conduct Authority (FRN 157260)
Protection and disputes: Financial Services Compensation Scheme and Financial Ombudsman Service
Capital: Capital and reserves of £30.8m at 31 December 2025 (latest published accounts).

FSCS protection

Up to £120,000 per person is protected across everything you hold with Harpenden Building Society.

Check your total protection

Email me if this rate changes

Email address

We use your email only for these alerts. Unsubscribe with one click from any email. See our privacy notice.

Rate history

No change since tracking began.

Go to Harpenden Building Society to apply

You'll apply on Harpenden Building Society's own website. Harpenden Building Society may pay us if you open this account; that doesn't affect its position in our results.