See your savings grow with our 1 year Fixed Rate ISA at 4.20% AER/tax-free p.a. (fixed). 2 year fixed rate option available at alternative rates.
Why wait to save tax-free? Make the most of this year's £20,000 allowance and start earning tax-free today.
Available until 5pm on 11 December 2025 to new customers and 16 December 2025 to existing customers. Please note that these issues may be withdrawn early due to availability. Early closure charges may apply. Interest is calculated daily and paid annually.
Your ISA updates simplified
Understand how changes announced in the Autumn Budget impact future ISA limits. View details.
Open your Fixed Rate ISA with NatWest
Whether you are a new customer or have an existing account with us already, it's simple to apply for a Fixed Rate cash ISA. Just click 'Apply online' below to get started. You’ll need to read a few T&Cs before you begin.
Compare Fixed Rate ISA options
You can save up to £20,000 and earn tax-free interest for terms of one or two years. Simply choose the fixed ISA term and interest rate that’s right for you.
Transfer your savings to your Fixed Rate ISA
After you’ve opened your account, you’ll need to add at least £1,000 before the Start Date of your ISA. You can add any savings or transfer another allowance into your account with our ISA transfer form.
Opening your Fixed Rate ISA
Whether you are a new or existing customer, you can still open a Fixed Rate ISA with us. T&Cs apply.
What is the interest rate?
Key dates
If you carry on applying, it means you're happy with what's in these documents, including the FSCS information sheet. Please take some time to review, print and/or save the important information.
Take a look at other saving options
Fixed Rate ISAs aren't your only option. We have a range of other savings accounts available. Check out all the options we've got to see if one might be right for you.
Please remember that once you move your money from an ISA to a non-ISA account the money will no longer have tax free status.
Specific account eligibility apply.