Many Cash ISA providers only let you open one ISA each tax year, but this means you have to choose between keeping your money handy or putting it away for the longer term. With CustomISA you can spread your annual tax-free allowance across as many Newcastle accounts as you like, to meet your individual savings goals.

With CustomISA you're no longer tied to a single ISA product

CustomISA allows you to split your annual ISA allowance between various Newcastle Cash ISA products and still get tax-free benefits.

If you have ISAs held elsewhere, you can also transfer these to the Newcastle to make the most of this great new service.

How does CustomISA benefit me?

CustomISA enables you to make the most of your Cash ISA allowance by creating a package of accounts to suit your needs.

It's ideal for those who would like a savings plan that is more tailored based on the length of a product or access for instance.

How does CustomISA work?

Each year you're allowed to save a certain amount of money into an ISA (Individual Savings Account) without having to pay any tax on the interest you earn. The allowance for the tax year 2021/2022 is £20,000.

Most banks and building societies allow you to save into just one ISA each tax year. However CustomISA lets you spread your allowance across several tax-free accounts ranging from easy access, regular saver and fixed term accounts to meet your individual savings goals.

In order to help you choose what ISAs suit your needs we have developed our CustomISA Calculator.

Create your own CustomISA

The CustomISA calculator allows you to compare and adjust the amounts you put into each account to help you find the perfect CustomISA for you.

The CustomISA Calculator allows you to

  • View and select from our range of ISAs
  • See the average interest rate that can be achieved over your choice of ISAs
  • Email / print a copy for your records
Next Steps

Once you’ve created the perfect CustomISA package you can apply for your ISAs in a number of ways


You can apply online by following the steps below:

1. Apply for the first of your chosen ISAs using our online application process, making sure you make a note of your online log in details.

2. Once your account is open, log into your account online and click on the ‘open another account’ tab. This will allow you to open further ISAs up to your maximum ISA allowance. You can also transfer ISAs from other providers.

3. Once all of your ISAs are open you can view your ‘CustomISA Summary’ online to see how your own unique ISA package is split.

By phone

If you would prefer to speak to someone about our CustomISA facility, please give us a call on 0345 734 4345.

In your local branch

To discuss CustomISA on a face to face basis, our friendly staff will be able to talk you through our CustomISA calculator and assist you in creating your own package of ISAs. Visit your local branch for further information.

In the meantime you can print off the CustomISA split you have selected or e-mail it back to yourself for future reference.