Notices

We have withdrawn our Market Tracker Cash ISA (2) from sale. Find out more

Please note that our Market Tracker Cash ISA (2) has been withdrawn from sale. Any customers that have recently applied for this account will have 15 calendar days to initially fund their account.
Important changes to our mortgage products - Find out more.

Mortgage products - On Tuesday 30 September 2025, we made changes to our mortgage product range. This included decreases across many of our Fixed Rate products for Owner Occupier and Buy to Let products.
Buy to Let Limited Companies
In addition we launched new Fixed Rate products for Buy to Let Limited Company landlords (UK registered companies) who have expat shareholders and/or directors in our acceptable list of countries.
Managed Mortgage Rates and Discounted Variable Rates
From 1 October 2025, we'll be decreasing our Managed Mortgage Rates (MMR) by 0.25%. All on-sale discounted variable product rates and other details, including representative examples displayed on our website, have been updated to reflect these lower rates.
We have written to existing customers who have been impacted by this change, with details relevant to them.
Our new and improved Online Service is here. Find out more

We've made some improvements to our Online Service. With several enhancements and added benefits our Online Service is now simpler and easier for you to use. Online Service changes
Online Service update. Due to planned essential maintenance, our Online Service will be unavailable between 9.00pm to 12:00am on Saturday 11 October. We apologise for any inconvenience this may cause.

Open an ISA online

You're applying to open an ISA.

Note: If you would like to open an ISA with us using money transferred from another ISA provider, please call us on 03330 140141 and we'll send you an application form and transfer authority form.

At the moment you can't apply for an ISA online using transferred money from another ISA provider. Not ideal we know, we're sorry.

New to Family Building Society?

Thank you for choosing to join Family Building Society to open an ISA.

As a new Family Building Society customer it only takes a few minutes to apply for a new ISA. Please have your National Insurance number to hand.

If you already have an account with National Counties please use one of the existing customer links to the right as Family Building Society is part of National Counties.

I'm new to Family Building Society

Already an existing Family Building Society customer?

If you are registered and already have access to our Online Service, please login to apply for an ISA.

Online Service login

If you don't currently access your accounts online, please register for the Online Service to apply for your new account. We will check your details to ensure our records are kept up to date and give you access to view your other accounts online.