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IMPORTANT: The last day of the 2024 / 2025 tax year is Saturday 5 April.
Our online and postal ISA applications for this tax year will close from 5pm on Friday 28 March until the morning of Monday 7 April. Find out full details and timings for opening and funding ISAs with us within the current tax year.
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Our new 1 Year Fixed Rate Bond (54) paying 4.60% AER on balances of £10,000+ is now on sale. Exclusively online only. Find out more here
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Online Service update. Due to planned essential maintenance our Online Service will be unavailable between Tuesday 25 March at 10:00pm until Wednesday 26 March at 1:00am. We apologise for any inconvenience this may cause.

Compare all Cash ISAs
See our range of tax-free Cash ISAs, including easy access, market tracker and fixed term accounts.
IMPORTANT: The last day of the 2024 / 2025 tax year is Saturday 5 April
Deadline for opening a new ISA
Our online and postal ISA applications for this tax year will close from 5pm on Friday 28 March.
Applications for the next tax year will reopen on Monday 7 April
Deadlines for funding your ISA
Faster payments: To ensure your funds are processed in this tax year, they must be received by midnight on Tuesday 1 April
Debit card payments (via our Online Service): These will be accepted until 6pm on Saturday 5 April
Cheque payments: These will be accepted until Tuesday 1 April
Please note: We cannot guarantee any funds sent after these times will be processed within the current tax year.
If you wish to deposit into an existing Family Building Society Cash ISA and you have not deposited in the current or previous tax year, then you will need to contact us to renew your ISA. You can contact our Family Service Team on 03330 140144, send us a secure message from your online account, or alternatively, you can complete a Cash ISA Renewal form and return to us. Please ensure that the existing ISA you wish to pay into is still accepting funds.
Why choose Family Building Society?
We're an award-winning building society that does things differently, with over 125 years supporting savers and over 52,000 account holders. No matter what you're saving for we're here to help and have a chat if you like, with minimum jargon.
Annual interest (AER gross) | Account rate type | Minimum opening amount | Additional information | Monthly interest option? | Withdrawal limits | Available to new customers? | |
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Market Tracker Cash ISA (2) |
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4.55% |
|
£1 |
Apply and manage online, by post or at our Epsom branch |
No | Unlimited | Yes | |
Full details and apply | |||||||
1 Year Fixed Rate Cash ISA (38) |
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4.10% |
|
£1,000 |
This account is available to new and existing customers. |
No | Withdrawals not permitted. Early Access Charge applies if account closed prior to maturity. | Yes | |
Full details and apply | |||||||
2 Year Fixed Rate Cash ISA (33) |
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3.95% |
|
£1,000 |
This account is available to new and existing customers. |
No | Withdrawals not permitted. Early Access Charge applies if account closed prior to maturity. | Yes | |
Full details and apply | |||||||
3 Year Fixed Rate Cash ISA (30) |
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3.85% |
|
£1,000 |
This account is available to new and existing customers. |
No | Withdrawals not permitted. Early Access Charge applies if account closed prior to maturity. | Yes | |
Full details and apply | |||||||
35 Day Notice Cash ISA (3) |
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3.80% to 4.00% |
|
£3,000. |
Open online, by post or in branch |
No | After 35 days' notice. Also Available without notice subject to the loss of 35 days' interest on the total amount withdrawn. | Yes | |
Full details and apply | |||||||
5 Year Fixed Rate Cash ISA (33) |
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3.60% |
|
£1,000 |
This account is available to new and existing customers. |
No | Withdrawals not permitted. Early Access Charge applies if account closed prior to maturity. | Yes | |
Full details and apply | |||||||
Flexible ISA (3) |
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2.85% |
|
£500 |
|
No | 12 allowed annually. | Yes | |
Full details and apply |

Comparing two savings accounts
Note that products are subject to additional terms and subject to change. See a product's full details to find out more.