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Britannia Additional Allowance Cash ISA

If your spouse or civil partner has passed away and held an ISA with us, you can invest an additional amount (on top of your normal ISA allowance) equivalent to the balance your spouse or civil partner held in their ISA.


  • An account designed just for additional allowances.
  • Earn tax-free interest of 0.37% tax-free AER variable on your additional allowance.
  • Make withdrawals whenever you want.
  • Access your account by post or by visiting us in branch.
  • Make deposits up to the value of your deceased partner's ISA balance.

Summary Box for Britannia Additional Allowance Cash ISA

  • The information provided below is a summary of the key features of our Additional Allowance Cash ISA and is not intended to be a substitute for reading its terms and conditions.

Account name


Britannia Additional Allowance Cash ISA

What is the interest rate?


Interest paid annually
Tax-free variable 0.37% AER variable 0.37%

Interest is calculated daily and will be paid into your account annually after close of business on 5 April.

Can Britannia change the interest rate?


Yes, the interest rate is variable which means it can go up or down.

We may change your interest rate for the following reasons:

  • To respond to any change, or reasonably expected change in the Bank of England base rate or other rate which impacts on the costs we incur.
  • To reflect any change, or reasonably expected change in our costs, regulation, law or in how we do business.
  • To reflect any change, or reasonably expected change that affects us, if it is reasonable for us to pass the impact of the change on to you.

We can also vary the interest rate without a particular reason but we will always notify you and allow you to close the account without any extra charges.

When we increase our interest rates we'll tell you about the change within 30 days after it's happened. This includes notifying you through branch notices, national press advertisements, statement messages or statement inserts. We may also send you a letter in the post, or email you.

When we decrease our interest rates we'll inform you by personal notice at least two months before we make the change.

For full details, please see the changes to interest rates section of the general terms & conditions.

What would the estimated balance be after 12 months, based on a £1,000 deposit?


Initial deposit at account opening £1,000
Balance after 12 months £1,003.70
Interest earned £3.70

We have worked this out assuming:

  • You haven't made any additional deposits or withdrawals.
  • We have not changed the interest rate in the 12 month period.
  • Please note: this example is intended to illustrate the interest that would be earned after 12 months. The balance shown does not take account of the fact that interest is paid annually on 5 April, rather than 12 months after account opening.

How do I open and manage my account?


Can I apply for this account?

You can apply for this account if:

  • You are a surviving spouse or civil partner and your late spouse/civil partner held money in an ISA and,
  • Your late spouse/civil partner passed away on or after 3 December 2014 and you were living with them at the time and,
  • The ISA(s) held by your late spouse or civil partner was held with The Co-operative Bank, smile or Britannia, and,
  • You have not already opened an Additional Allowance ISA in respect of an Additional Allowance.
  • Your spouse/civil partner died less than 3 years ago or, if later, the administration of their estate was not completed more than 180 days ago.

You must be a UK resident to open a savings account with us. If you are a non-UK resident, you may be able to transfer your Additional Allowance to another ISA provider that will accept your transfer and that will allow a non-UK resident to open an account.

  • This account can only be opened as a sole account.

How do I apply for this account?

You will need to advise us firstly that your spouse/civil partner has passed away and provide us with the death certificate. You can do this by visiting a branch or by contacting us on 0800 132 304 (call charges) for more information about how you can notify us by post.

Once we've received this, we will calculate your Additional Allowance and send this to you in writing at your address along with further information about the product, enclosing an application form. Once you’ve read all the information, and you'd like to apply, you can complete the application form and return it to us by post (along with proof of identity) to:

Britannia, FREEPOST (15796), Dept CO33, Leek, Staffordshire Moorlands, ST13 5RG.

Is there a minimum and a maximum balance?

There is no minimum balance although you must make a minimum initial Additional Permitted Subscription of £1.

The maximum amount which can be paid into our Additional Allowance ISA is the balance of your deceased spouse or civil partner's ISA at the date of death.

How do I make deposits into this account?

You can pay into this account with either cash, cheque, or by electronic transfer from another bank account held with us or elsewhere.

Payments are permitted for three years from the date of death of your late spouse/civil partner, or for 180 days after settlement of the estate if this is later. If the date of death was between 3 December and 5 April 2015, it will be treated as being 6 April 2015 and you will have the later of these two time frames to make payments.

You can pay into the account up to the total value of your Additional Allowance. The value of any Additional Allowance will be equal to the ISA balance at date of death. This is in addition to and separate from your own ISA allowance that you may be entitled to. If your late spouse/civil partner held ISAs with different providers, you may also want to speak to those providers about an Additional Allowance ISA (also known as Additional Permitted Subscription Allowance).

Transfers in to this Additional Allowance ISA are not permitted.

How do I contact you to discuss this account?

You can contact us by telephone or in branch to discuss this account.

Can I withdraw money?


Yes, you can withdraw your money whenever you want as this account has no restrictions on the number of withdrawals. However, as this cash ISA is not a flexible cash ISA, any withdrawn money that you want to replace will count towards your total Additional Allowance balance, which is the maximum amount that you can pay in.

So, for example, if you have an Additional Allowance maximum balance of £10,000, and you have deposited £7,000 and then withdraw £2,000, you will only be able to deposit a further £3,000.

You can make withdrawals through the following ways:

  • Branch withdraw cash/cheques over the counter.
  • Post you can request cheque withdrawals. Withdrawal forms for you to complete are available on request.

Additional information


Interest earned from this account will not count towards any of your available personal savings allowance.

All interest earned from your ISA will be free of both Income and Capital Gains Tax.

Any reference to tax is based on our understanding of current tax regulations which may change in the future and depends on your individual financial circumstances.

Tax Free - The contractual rate of interest payable where interest is exempt from income tax.

AER - Stands for Annual Equivalent Rate and illustrates what the interest rate would be if interest was paid and compounded once each year.

Tax-year - A tax year runs from 6 April to 5 April the following year.

To apply, you need to be:

  • Aged 16 or over.
  • A UK resident (for tax purposes).
  • A spouse or civil partner of a deceased Co-operative Bank, smile or Britannia cash ISA customer who you lived with at the time of their death.

Ready to apply?

Please call us on 0800 132 304 (call charges) or visit a branch.

Important documents

Please note: our terms and conditions are changing with effect from the 13th January 2018. Please see the attached Britannia Savings Summary of Changes document which explains what we’re changing and why.

Product Specific Terms and Conditions & Keyfacts (which contains Summary Box & interest rates)

Download Product Specific Terms and Conditions & Keyfacts (which contains Summary Box & interest rates) PDF (925KB)

Summary of changes to our Britannia Savings Terms and Conditions with effect from 13th January 2018.

Download Summary of changes to our Britannia Savings Terms and Conditions with effect from 13th January 2018. PDF (114KB)

Britannia General terms & conditions

Download Britannia General terms & conditions PDF (979KB)

How we use your personal information

Download How we use your personal information PDF (290KB)

Any reference to tax is based on our understanding of current tax regulations which may change in the future and depends on your individual financial circumstances.

The Co-operative Bank reserves the right to decline or accept any application and/or deposit.

  • Remember you can subscribe to a Co-operative Bank/ Britannia Cash ISA as long as you have not subscribed to another cash ISA with another provider in the current tax year.

smile, The Co-operative Bank and Britannia are trading names of The Co-operative Bank plc, which is a member of the Financial Services Compensation Scheme (FSCS).