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Note: We can only accept your ISA application if you live in the UK, or have a BFPO address

Please answer all questions marked with an *.

Your Nationwide Current account

As you know, to open one of our Flexclusive ISA accounts you must hold an existing Nationwide current account and be eligible to apply.
Your Nationwide current account number*

If you have initiated an account transfer in the last 21 days please tick the box to help us complete your application


Sort Code and Account Number

Find the sort code and account number of your Nationwide card account:

  • If you're registered, by logging in to our Online Bank
  • On your paper statement
  • On your Nationwide card
sort code and account number of your Nationwide card account
Sort code
Account number


To be eligible to open a Flexclusive ISA you must either:

  1. Hold a FlexAccount with a Visa debit card (not cash card or cash card+) and:
    • Have been paying in £750+ a month (excluding internal transfers) for the last 3 months; or
    • Complete an account transfer to us (from a non-Nationwide account) using our Account Transfer Service or have done so in the last 4 months; or
  2. Hold a FlexDirect account or FlexPlus account

Paying money into your Flexclusive ISA

You can transfer funds to your Flexclusive ISA as part of this application from a Nationwide Current or Instant Access account.
Would you like to move money into your Flexclusive ISA as part of your application? *


Nationwide Current and Instant Access Savings Accounts

Current Accounts

  • FlexAccount
  • FlexDirect
  • FlexPlus

Card Instant Access Savings Accounts

  • Cashbuilder Card
  • Invest Direct
  • Regular Savings
  • Smart Card (you must be at least 18 to open a Flexclusive ISA)

Passbook Instant Access Savings Accounts

  • Bonus Saver
  • CashBuilder Book
  • Flexclusive Regular Saver
  • Flexclusive Saver
  • Loyalty Saver
  • Monthly Income 60+
  • Portman Instant Access
  • Portman Tracker Plus
  • Smart Book (you must be at least 18 to open a Flexclusive ISA)

Note 1: A welcome letter with your new account details will be posted to you within the next 5 working days. If you're registered for Online Banking it may take up to 7 days before you can see this account in the Online Bank. Once you have received your account details you will be able to move money into your ISA at a time convenient to you.

A little more about you

As with all ISA applications, we are legally required by HMRC regulations to ask you for your personal details (even if we know you already).

First name*
Date of birth*

National Insurance number

Find your National Insurance number (if you have been issued with one):

  • On your P60 end of year tax statement
  • On your payslip
  • On your pension statement
  • On your National Insurance Card

Lost or can't remember your National Insurance number?

Are you registered for Online Banking?

Your current UK address

Please enter your permanent UK address below.

Enter a BFPO address instead.

UK Address


Keeping you updated

Please provide us with your contact details so we can keep you updated with any important information about your application.


Please provide at least one contact phone number.*


Haven't got a valid email address?

You must have an email address to be able to apply online for this ISA. This is so that we can keep you updated about processing your application. If you do not have an email address you can apply in any Nationwide Branch

Alternatively take a look at our range of Cash ISAs to see other products that might suit you needs.