New customers

Please make sure you have read the 3 Year Fixed Rate Cash ISA and Personal Savings Terms and Conditions.

Existing customers

Log in to open an account.
Interest rate Summary box Opening an account ISA Transfers Documents

What is the interest rate?

Interest rate (AER*)

4.15% Fixed

Gross monthly interest

4.07%

Gross annual interest

4.15%

Minimum opening balance

£1,000

Term

3 years

*AER stands for annual equivalent rate and illustrates the interest rate if it was paid and compounded once each year.

Interest is calculated daily, and paid monthly or annually. You can choose to have your interest paid to your Fixed Rate Cash ISA, any other Personal Savings account you hold with us that allows deposits, or your nominated UK bank or building society account.

Summary box - 3 Year Fixed Rate Cash ISA

No, the interest rate is fixed and will not change for the term.

We guarantee to pay the interest rates shown provided a deposit is paid into the account within 14 calendar days of the account being opened. If the interest rates have increased by the time the first deposit is received, you’ll automatically receive the higher rate.

Deposit at account opening Balance at end of term Interest earned
£1,000.00 £1,129.74 £129.74
£15,000.00 £16,946.07 £1,946.07

These are only examples and do not take into account your individual circumstances.
The examples assume that no further deposits or withdrawals are made and that interest earned is paid to this account at maturity.

  • To open an account you need to be aged 18 years or over, resident in the UK and only tax resident in the UK. Our accounts cannot be held in trust or by US Persons (meaning US citizens, residents, green card holders or taxpayers in respect of their worldwide income)
  • This account can be held in one name only
  • You can open and manage your account online. We will accept instructions in relation to the account through our Internet Banking Service
  • The minimum deposit required to open this account is £1,000
  • The maximum deposit for this account is the 2024/2025 ISA allowance of £20,000. You’re also able to transfer part or all of your ISA funds from previous tax years into a new Cash ISA with Aldermore, which won’t count towards the current year’s allowance. Please be aware, your ISA allowance per tax year is subject to HM Revenues & Customs rules
  • You have 14 calendar days from account opening to make as many deposits as you like. After this period no further deposits are permitted
  • Yes, you can withdraw money from this tax year or previous tax years if you need to, subject to a deduction of 180 days' interest. Your money can be returned to your nominated account, transferred to any other Personal Savings accounts you hold with us that allow deposits or transferred to another ISA provider
  • Our Cash ISAs are flexible. You can replace money you’ve withdrawn without the replacement counting towards your annual ISA subscription limit, providing you replace the funds in the same tax year you withdraw them. You will need to open a new Cash ISA product at the interest rates available at the time, or you could pay the money into another Cash ISA product already held with us that allows additional deposits
  • We will contact you at least 21 days before your account matures detailing your options and enabling you to give us your maturity instructions
  • An additional reminder will be issued around 14 days prior to your account maturing
  • If you do not advise us of your maturity instructions at least two days before the maturity date, we will automatically move your money into a 30 Day Notice Cash ISA
  • Interest is paid gross without the deduction of income tax and doesn’t count towards your Personal Savings Allowance
  • If you change your mind within 14 days of opening your account we will cancel your account without penalty or notice
  • You can request to transfer in ISAs held with other providers at account opening stage only
  • *AER stands for annual equivalent rate and illustrates the interest rate if it was paid and compounded once each year
Apply now for a 3 Year Fixed Rate Cash ISA

Opening an account

Our accounts are open to a wide range of people for a wide range of needs, just so long as you:

  • have a UK bank or building society account, on which you’re named as an account holder. This is your nominated account and you’ll need the sort code and account number to hand when you open your new account with us. You can only transfer money into your Aldermore account from this account, or by transfer from another ISA provider
  • are aged at least 18
  • are resident in the UK and only tax resident in the UK. Our accounts cannot be held in trust or by US Persons (meaning US citizens, residents, green card holders or taxpayers in respect of their worldwide income)
  • have read the 3 Year Fixed Rate Cash ISA and Personal Savings Terms and Conditions.
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ISA Transfers

When you open your account, you’ll be asked at the start of the application if an existing ISA is to be transferred. If it is, towards the end of the application you’ll be asked to provide the details of the ISA to be transferred.

Where your existing provider subscribes to the electronic Cash ISA transfer platform, your request will be submitted electronically.

If your existing provider doesn’t subscribe to the electronic platform, you’ll need to print and send us a completed ISA transfer form, which is provided to you at the end of your application.

Please make sure that any ISA Transfer Forms are returned within 14 calendar days from the date of application.

Read more about ISA Transfers
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Fixed Rate Cash ISA FAQs

You can split your annual ISA allowance across the different ISA types - Cash ISA, Stocks and Shares ISA, Innovative Finance ISA and Lifetime ISA - or save the whole allowance in one type of ISA (apart from the Lifetime ISA, which has a limit of £4,000).

Aldermore offers Cash ISAs only. You can split your Cash ISA allowance between any of our Cash ISA products. This will be classed as one Cash ISA for the purposes of tax-free allowances and HMRC reporting.

Following changes announced for the 2024/25 tax year, you can now invest your current year’s ISA allowance across multiple cash ISA providers. So, if you’ve invested part of your current year’s ISA allowance with another bank or building society, you can invest the remainder of the allowance in an Aldermore cash ISA.

If you’ve got existing ISAs with other providers from previous tax years, these don’t count towards your £20,000 annual allowance so you can transfer these to us in full. By bringing all of your ISAs together in one place, you can manage your ISA portfolio with ease.

The current tax year allowance (ends 5 April 2025) is £20,000.

We’ll contact you a minimum of 21 calendar days before your account matures to explain your options, with an additional reminder issued around 14 calendar days prior to your account maturing. You’ll be able to view your maturity options and provide your maturity instructions by logging into your account in Internet Banking.

If we don't hear from you we will move your money into our 30 Day Notice Cash ISA.

If you want to transfer your Cash ISA to another provider, you will need to contact the provider that you would like to transfer your Cash ISA to and ask them to either send us the relevant ISA Transfer Request Form or send us their instructions electronically. You’ll need to give your new provider your Aldermore ISA account number as the roll/reference number. A sort code shouldn’t be required.

If you want to withdraw all or part of your Cash ISA, you will lose the tax-free status on that money. If you ask for this to be returned to your nominated account, the funds will be sent by Faster Payments on the maturity date (providing we receive your instructions online or in writing prior to the maturity date). In the event that the day of maturity is a non-business day, the funds will be sent on the next business day. You will receive interest until the day before the funds are returned. For example, if the day of maturity is a Saturday, you will receive interest until Sunday and funds will be returned on Monday (providing this isn’t a Bank Holiday).

You can transfer an ISA by following the usual transfer process. All of our Cash ISAs are flexible but if you transfer them to another provider, the provider that you transfer to may not offer flexibility in which case your ISA will no longer be flexible when it moves to them.

If you transfer an ISA from another provider into one of our Cash ISAs, it will automatically become flexible.  

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