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 Offer may be withdrawn early due to limited availability.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 Offer may be withdrawn early due to limited availability.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
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 Offer may be withdrawn early due to limited availability.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
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: 4.05% AER/Tax-free p.a. (fixed) for 1 year on balances between £1,000 - £24,999. Alternative rates available on balances above £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
£24,999
Minimum Age
18
UK Resident
Yes
1 Year Fixed Rate ISA - Tier 1
Interest AER4.05%
Min deposit£1000
Term1 Year
1 Year Fixed Rate ISA - Tier 1Royal Bank of Scotland
Terms and Conditions: 4.05% AER/Tax-free p.a. (fixed) for 1 year on balances between £1,000 - £24,999. Alternative rates available on balances above £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
Terms and Conditions: 4.05% AER/Tax-free p.a. (fixed) for 2 years on balances between £1,000 - £24,999. Alternative rates available on balances above £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
NatWest, offer two kinds of tax-free ISA. Their Fixed Rate ISA and their Instant Cash ISA. Their Fixed Rate ISA allows you to:
Have a fixed interest rate on your cash ISA so you know in advance what your savings will earn
Choose a term that suits you, either one or two years
Keep all the interest - which helps your savings grow faster
Make transfers into the ISA, so you can bring all your ISAs together in one place
You will earn a higher rate of interest on the two year plan and for any amount above £25,000
Useful to Know
As this is a fixed rate ISA, you cannot withdraw your money during the agreed term. If you do choose to withdraw your money then you incur an early closure charge. They offer both one year and two year terms so be sure to pick one that’s right for you. Also:
The minimum deposit is £1,000
The early closure charge is the lower of the amount of interest earned on your account in 90 days.
You will need your National Insurance Number to apply for any ISA.
NatWest is one of the few banks that offer a fixed rate of ISA for one year, as many offer a two year minimum and some up to five year minimums. For many people this time frame isn’t convenient and so NatWest are offering an easy way for savers to take the plunge and begin their savings.
As NatWest is part of The Royal Bank of Scotland Group, you will find that they offer the same accounts and rates. However, they do not currently offer the highest rate of interest on the market.
Why use an ISA?
An ISA is a tax efficient way to save and stands for Individual Savings Account. An ISA lets you pay little or no tax on the interest of your savings and investments, making them a popular choice for saving large amounts of money.
They have become less popular since the new PSA (Personal Savings Allowance) has allowed lower rate tax payers to save up to £1000 tax-free and higher rate tax payers up to £500. As many current accounts are now offering competitive rates of interest, many people are moving away from ISAs.
As your tax-free amount is much higher in an ISA, there are still opportunities for savers to make the most of their money and this fixed rate account is a great option.
