Terms and Conditions: 4.30% AER/Tax-free p.a. (fixed) for 2 years on balances above £25,000. Alternative rates available on balances below £25,000. Rate available until 5pm on 15th April 2026 for new customers and 20th April 2026 for existing customers. Offer may be withdrawn early due to limited availability. Interest is calculated daily and paid at maturity. You can withdraw money from your account up to 11th May 2026. If you want to make a withdrawal after this time and before the Maturity Date, you must close your account by giving written notice in branch. If you make a payment into your Fixed Rate ISA you will not be able to make any further payments for that tax year into any other cash ISA with NatWest or Royal Bank of Scotland. Early Closure Charge applies: the lower of the amount of interest earned on your account or 90 days’ interest. The Early Closure Charge will be deducted from your Fixed Rate ISA. Must be 18+ and UK resident
Details
Interest Paid
Monthly
Maximum Balance
Not applicable
Minimum Age
18
UK Resident
Yes
2 Year Fixed Rate ISA - Tier 2
Interest AER4.30%
Min deposit£25000
Term2 Years
2 Year Fixed Rate ISA - Tier 2Royal Bank of Scotland
Terms and Conditions: 4.30 AER/Tax-free p.a. (fixed) for 2 years on balances above £25,000. Alternative rates available on balances below £25,000. Rate available until 5pm on 15th April 2026 for new customers and 20th April 2026 for existing customers. Offer may be withdrawn early due to limited availability. Interest is calculated daily and paid at maturity. You can withdraw money from your account up to 11th May 2026. If you want to make a withdrawal after this time and before the Maturity Date, you must close your account by giving written notice in branch. If you make a payment into your Fixed Rate ISA you will not be able to make any further payments for that tax year into any other cash ISA with NatWest or Royal Bank of Scotland. Early Closure Charge applies: the lower of the amount of interest earned on your account or 90 days’ interest. The Early Closure Charge will be deducted from your Fixed Rate ISA. Must be 18+ and UK resident
New deposits between £1 and £20,000. ISA transfers in also allowed. Open and manage online or on mobile banking app. FSCS Protected. After 12 months, your account will switch to an Instant Access Cash ISA and receive the standard variable rate. Withdrawals permitted subject to 90 days lost interest
Terms and Conditions: 4.20% AER/Tax-free p.a. (fixed) for 1 year on balances above £25,000. Alternative rates available on balances below £25,000. Rate available until 5pm on 15th April 2026 for new customers and 20th April 2026 for existing customers. Offer may be withdrawn early due to limited availability. Interest is calculated daily and paid at maturity. You can withdraw money from your account up to 11th May 2026. If you want to make a withdrawal after this time and before the Maturity Date, you must close your account by giving written notice in branch. If you make a payment into your Fixed Rate ISA you will not be able to make any further payments for that tax year into any other cash ISA with NatWest or Royal Bank of Scotland. Early Closure Charge applies: the lower of the amount of interest earned on your account or 90 days’ interest. The Early Closure Charge will be deducted from your Fixed Rate ISA. Must be 18+ and UK resident
Details
Interest Paid
Monthly
Maximum Balance
Not applicable
Minimum Age
18
UK Resident
Yes
1 Year Fixed Rate ISA - Tier 2
Interest AER4.20%
Min deposit£25000
Term1 Year
1 Year Fixed Rate ISA - Tier 2Royal Bank of Scotland
Terms and Conditions: 4.20% AER/Tax-free p.a. (fixed) for 1 year on balances above £25,000. Alternative rates available on balances below £25,000. Rate available until 5pm on 15th April 2026 for new customers and 20th April 2026 for existing customers. Offer may be withdrawn early due to limited availability. Interest is calculated daily and paid at maturity. You can withdraw money from your account up to 11th May 2026. If you want to make a withdrawal after this time and before the Maturity Date, you must close your account by giving written notice in branch. If you make a payment into your Fixed Rate ISA you will not be able to make any further payments for that tax year into any other cash ISA with NatWest or Royal Bank of Scotland. Early Closure Charge applies: the lower of the amount of interest earned on your account or 90 days’ interest. The Early Closure Charge will be deducted from your Fixed Rate ISA. Must be 18+ and UK resident
Why have a Savings Account that you cannot access?
You will not have instant access to this savings account but the interest rate will be higher as a result, and you can avoid paying tax on the interest.
What is a fixed rate ISA?
Fixed rate ISAs allow you to earn a guaranteed rate of interest on your savings without paying tax on that interest. They are normally offered over 1-3 years with the level of interest staying the same for the entire period of the ISA.
With a fixed rate ISA, you agree not to access yours savings during the life of the product. Legally ISA providers do have to allow you access to your money if you need it, but they can (and normally do) charge heavy penalty fees for this.
Alternatives to fixed rate ISAs:
A popular alternative is tracker rate ISAs which give you a rate of interest which is tied to a base rate (often the Bank of England base rate) plus a set extra percentage. If the base rate moves up, your interest rate will move up in line with it.
A tracker ISA means that if interest rates increase, so will the rate you earn on your savings.
However, the starting rate on a tracker ISA will tend to be lower than for a fixed rate ISA, so the better option will normally depend on how likely you think it is that interest rates will rise over the lifetime of the ISA.
