Fixed Rate ISAs

Account name

Fixed Rate ISAs

What is the interest rate?

AER/tax-free (fixed). The interest rate we pay depends on the length of the term.

AER is based on funds deposited by 1 September 2026. If you pay money in before or after this date, you may earn more or less interest than this.

• We work out the interest we’ll pay on your account each day.
• We’ll pay interest into the account once a year and at the end of the term. It will be available to you the next day.

Can Santander change the interest rate?

No, the interest rate is fixed during the term.

What would the estimated balance be after 12, 24, 36 and 60 months based on a £1,000 deposit?

To work out the estimated balance, we’ve assumed that:

• The account is opened and the initial payment into the account is made on 1 September 2026.
• You don’t pay in any more money or take any out.

These illustrations are only examples and don’t take into account individual circumstances.

How do I open and manage my account?

Eligibility 

You can have this cash ISA if you’re 18 or over and a UK resident. You can only open this account in your sole name – joint ISAs aren’t allowed. 

How to open the account 

You can apply for an account in branch, by mobile or online. 

Managing the account 

You can manage your account in a branch or by phone. You can also view your account in Online and Mobile Banking but you can’t manage it that way. 

Paying money in 

You can only pay into one Santander cash ISA each tax year, but other providers may let you pay into more than one ISA of the same type within the same tax year. A tax year runs from 6 April in one year to 5 April the next. 

The UK government sets an ‘annual allowance’. This is the total you can pay into all of your ISAs each tax year. The UK government might  also set limits on the number and types of ISAs you can pay into each tax year. 

The ISA allowance for the 2026/27 tax year is £20,000. Deposits can be made up to and including 30 September 2026. No further deposits will be allowed.

• Minimum balance: £500. You can open the account with a zero balance if you are transferring in existing ISAs with a balance of at least £500.
• Maximum balance: £2,000,000 – but you can only pay in up to your ISA allowance each tax year. 
   

You can pay money in until 30 September 2026. You can do this electronically or in cash in branch, over the phone or through Online Banking.

We won’t accept any deposits after that date. You can also transfer in existing Santander cash ISAs and existing ISAs held with external ISA providers. 

For ISA transfers from another provider, we’ll need to receive: 

• your application within 14 days of your account being opened, and
• the money from the ISA you’re transferring within 30 days of your account being opened. 
   

If you’re transferring in a Santander cash ISA, we’ll need to receive your application by 30 September 2026.

We recommend reading the information on our ISA transfers support page before requesting an ISA transfer.

This product doesn’t accept additional permitted subscriptions. 

Can I withdraw money?

Yes, you can take out all, but not some, of your ISA balance. You can do this by closing your account or transferring your ISA to another provider. We’ll charge you a fee equal to 120 days’ interest if you do.

This ISA isn’t flexible. That means if you take money out, it will lose its tax-free status. If it’s repaid into an ISA, it’ll count towards your ISA allowance for the current tax year.

You can transfer your cash ISA to another provider by contacting the new ISA provider.

At the end of term

The term of this account is 12, 24, 36 or 60 months – you select this when you open the account. You can choose what you want to do with the money in your cash ISA up to 28 days before the term ends.

If you don’t tell us what you want to do, we’ll transfer your account to an ISA Saver. We’ll give you more details, including your new interest rate, closer to the time.

Additional information

Subject to availability and may be withdrawn without notice. Rates and information correct as at 4 August 2026.

Tell us if you change your mind

You can cancel your account at any time during your ‘cancellation period’ – we won’t charge you for it. This is 14 days, starting the day after we confirmed your account is open.

If you do this, we’ll return your money together with any interest we owe you. We’ll do this as soon as we can (and within 30 days from when you tell us). 

If you transferred money from another ISA provider and you cancel this account, that provider may not accept the return of the money. If that happens, you can keep the account open or transfer your money in full to another ISA provider. You’ll need to contact your new ISA provider to arrange the transfer.

You can also close your account at any other time outside this cancellation period but we’ll charge you a fee equal to 120 days’ interest if you do.

Tax status

An ISA allows you to earn interest on your savings without paying tax. That means any interest you receive won’t contribute towards your Personal Savings Allowance. ISAs are subject to the Individual Savings Account Regulations 1998 and other government rules. 

If you don’t follow those rules, your ISA might become ‘void’ and you may need to pay tax on interest paid.

How we manage scam claims

We’ll support you if you’ve fallen victim to fraud. Find out more about our approach to fraud.

Transferring ISAs from other providers

You can transfer ISAs you have with other providers at any time, but we must receive the transfer request within 14 days of when you open your Santander ISA. The money you’re transferring must reach your Santander ISA within 30 days of opening. 

Before you transfer your ISA to us, you’ll need to consider these points:

• You’ll first need to open a Santander ISA.
• We don't charge a transfer fee but other providers may.
• You can transfer some or all the money that you’ve paid into an ISA in previous tax years. If you want to transfer money that you’ve paid into an ISA in the current tax year, you’ll need to transfer all of it. From 6 April 2024, some providers may allow you to transfer some of your current tax year subscriptions. However, Santander only accepts transfers of current tax year subscriptions in full.
• If you transfer an ISA in full to us and have built up previous tax year flexible allowances with your current provider, you’ll lose that allowance when you move to Santander.
• If you want to use the flexible allowance you should re-deposit into your existing ISA before you transfer to us.
• Transferring money out of a Help to Buy: ISA will impact the bonus you may receive.

If you want to transfer your ISA to another provider

You can transfer all or part of your savings in your ISA to another provider.

• Any money paid into your ISA in the current tax year must be transferred in full.
• Any money paid into your ISA in the previous tax years doesn’t need to be transferred in full. You can choose to transfer only part of the money if you want to.

Check your ISA Key Facts Document for any restrictions. You’ll need to ask your new provider to arrange the transfer for you.

If your Child Trust Fund (CTF) is due to mature or has matured

You can transfer all or part of your maturing CTF, your matured CTF or Protected ISA to one of our cash ISAs. If your CTF is maturing, the transfer will only happen at the point of maturity, on your 18th birthday. You are allowed to transfer part of the money held in your account. Before doing that, you must tell your existing provider what you want to do with the rest of the money. We must receive the transfer request within 14 days of when you open your Santander ISA. The money you're transferring must reach your Santander ISA within 30 days of opening.

The ISA manager for Santander cash ISAs is Santander UK plc. For Santander Investment (Stocks and Shares) ISAs the ISA manager is Santander ISA Managers Limited. This means that transfers between Santander cash ISAs and Santander Investment (Stocks and Shares) ISAs should be treated as transfers between ISA providers.

ISAs with a roll number

For ISAs with a roll number, please use the cash ISA transfer form below to transfer them. Be sure to quote the roll number, account number, and sort code.

When quoting the roll number, please remove any special characters (e.g. – or / ). These will not be accepted on the form and your transfer will not be processed.

• Cash ISA transfer form
• Investment (Stocks and Shares) ISA transfer form (PDF - 1.59 MB)
• Innovative Finance ISA transfer form (PDF - 77 KB)
• Lifetime ISA transfer form (PDF - 104 KB)
• Matured Child Trust Fund and Protected ISA transfer form (PDF - 76 KB)

Transferring other Santander cash ISAs

You can combine all of your Santander cash ISA balances into one cash ISA. 

To combine your cash ISAs, please use the Santander Cash ISA transfer form below.

Santander Cash ISA transfer form (PDF - 219 KB)

Withdrawals

To keep your money tax-free when transferring between ISAs, you must arrange it as an ISA transfer. If you withdraw money from your ISA it will lose its tax-free status and if you pay it back into an ISA, this will count towards your annual allowance for the current tax year.

Everything you need to know before you apply

We recommend reading the information in the documents below before you apply. You may like to save or print them so you can refer to them in the future.

• Fixed Rate ISA Key Facts Document (PDF - 138 KB)
• General Terms & Conditions (PDF - 770 KB)
• Santander ISA Transfer Offer Terms and Conditions (PDF - 51 KB) 

To view these documents, you may need to download Adobe Reader

Statements and other information

We’ll send you a certificate or email confirmation after you’ve opened the account.

• We'll send your documents, statements and some of your letters as e-Documents. We'll add them to your mailbox in Mobile Banking. In Online Banking, you can find them in your 'Statements and documents’.
• You'll need to provide us with a valid email address, so we can let you know when we've sent you an e-Document. It’s important you tell us if your email address changes. You can change your details in Mobile and Online Banking.
• The easiest way to update your paper-free preferences is in Mobile and Online Banking. You can also contact us or visit your local branch.
• You can order a paper copy of a statement in Chat, by phone or in branch. You can also ask for your statements in an alternative format, such as braille.
• We’ll send you a statement once a year.
• The favourable tax treatment of ISAs may change in the future and is subject to individual circumstances.

Subscribing to your existing ISA

If you haven’t paid into your cash ISA for a whole tax year, you might need to complete an ISA declaration. You might need to do this before you can make any more subscriptions.

You can do this by logging on to Online Banking. Click the chat button and type ‘fund my ISA’ into the chat or get in touch.

Fancy an e-voucher of £50 to £400? Transfer in your full balance in one go from a non-Santander ISA to an Easy Access ISA or one of our fixed rate ISAs

How much do I need to transfer?  

The non-Santander ISA you transfer will need to have a minimum balance and be a full transfer. Here are the transfer amounts and the e-voucher you could get.

Each eligible transfer could receive a voucher. For example, if you complete a transfer of £20,000 and second transfer of £40,000 to a different eligible Santander ISA, you could receive a £50 voucher and a £100 voucher.

Here’s how:

1. If you don’t have one already, open or upgrade to a new Easy Access ISA or Fixed Rate ISA 
2. Complete a transfer in instruction online or in branch. This asks for your non-Santander ISA to be transferred to your Easy Access ISA or Fixed Rate ISA. For Fixed Rate ISAs, you need to do this within the first 14 days of opening. 
3. You need to ask for your transfer in whilst the offer is available from 6 April 2026 to 4 May 2026.
4. Just so you know, this offer is subject to availability. It can be withdrawn at any time. You must have asked for your non-Santander ISA transfer in before the offer is withdrawn. We suggest you do this on the day you open or upgrade.
5. When you complete the form, you’ll need to make sure you ask for a full transfer of your existing non–Santander ISA. The transfer must be made in one single payment.
6. The non-Santander ISA being transferred will need to have a minimum balance and be a full transfer.
7. You’ll need to provide us with an up-to-date email address. This is where we’ll email your code to redeem your e-voucher which will be valid for 12 weeks. You can check the email address we hold for you in Online or Mobile Banking. You can update it in Online Banking.
8. Then sit back and we’ll take care of the rest. Your ISA could take up to 30 days to transfer. You’ll get your code to redeem your e-voucher within 30 days of your transfer completing.

For the important stuff like information on ISA transfers, visit our ISA transfers page. For other information about the e-voucher, view the terms and conditions (PDF - 463 KB).

If you requested your transfer from 17 March 2026 but before 6 April 2026, then different T&Cs (PDF - 51 KB) apply
 

What is an e-voucher?

An e-voucher is an electronic voucher which can be redeemed at over 250 retailers including Amazon, Costa and Tesco

• If you’re eligible, we’ll email a code with details of where you can redeem your e-voucher.
• Enter your code to pick an e-voucher from over 250 retailers.
• Your chosen e-voucher will be sent to you by email.
• Take a look at the list of all available retailers