Power up Your savings

Start the tax year strong

 with tax-free savings in a Cash ISA.

Choose an ISA that works best for you

Cash ISAs are a simple, tax-efficient way to save. It could make your money work harder than a traditional savings account. 

Cash ISAs & Fixed Rate ISAs explained

An ISA (Individual Savings Account) allows you to save up to £20,000 each tax year without having to pay income tax on the interest you earn. Make the most of your tax-free allowance for 2024/2025

NatWest offer two types of Cash ISAs for over 18s: an instant access Cash ISA and a Fixed Rate ISA. 

I want to open a new ISA

Is an instant access Cash ISA best for you?

Flexible savings and tax-free benefits

Instant access savings with a Cash ISA

  • Start your ISA savings with as little as £1.
  • Take money out whenever you need it.


NatWest's Cash ISA interest rates 

  • 1.75% AER / 1.74% Tax free p.a. (variable) on balances of £1-£24,999.
  • 3.20% AER / 3.15% Tax free p.a. (variable) on balances of £25,000+.
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Is a Fixed Rate ISA best for you?

Fixed interest so you know how much you will earn

Fixed interest for long term savings

  • Choose a term and open your account with £1,000.
  • Fix your Cash ISA interest rate and watch your savings grow.

One and two year Fixed Rate ISA rates

  • 4.35% AER/Tax-free p.a. (fixed) 1 year term.
  • 4.00% AER/Tax-free p.a. (fixed) 2 year term.

No withdrawals or deposits during the term. Available for new customers until 3rd July 2024.

Available to existing customers until 8th July 2024.

Please note that these issues may be withdrawn early due to limited availability.

Interest is calculated daily and paid annually to your ISA on the first business day in April and on the Maturity Payment Date. Early closure fees may apply.

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Transferring from an Existing Cash ISA

An ISA transfer is when you switch your ISA savings to a new provider. You might do this to get a better interest rate, or to take advantage of a different type of ISA altogether. You can transfer an existing ISA elsewhere into your NatWest Cash ISA at any time, bringing all your ISAs together in one place.

Full details on how to complete an ISA transfer can be found here.

Cash ISA - FAQs

Financial Services Compensation Scheme

Your eligible deposits held by a UK establishment of NatWest are protected up to a total of £85,000, by the Financial Services Compensation Scheme, the UK's deposit guarantee scheme. Any deposits you hold above the limit are unlikely to be covered.

Find out more (PDF, 3k KB) about the scheme and how it protects your money.

Investments through NatWest Invest may also be covered by the Financial Services Compensation Scheme in some scenarios. You can find out more here.

Want to reach your savings goals quicker?

How to start saving

Ready to start saving and take control of your financial future? Check out our guide to discover the benefits of using a savings account, how to save regularly, and how your savings can earn you interest.

Work towards your savings goals today

Got specific financial goals but don't know where to start? We're here to help. Discover the best strategies for saving towards your goals, and get tips for staying motivated along the way. Plus, explore tools and resources that could help track your progress and achieve your savings goals faster. 

Discover our savings accounts

Stash the cash for your future with one of our many savings accounts. Whether you're saving for the long term, or for a certain goal, we could have an account for you. Specific account eligibility criteria apply.