Instant Access Cash ISA - Online Saving Account - NatWest

Tax free savings couple in a park

Give your savings
a tax-free lift

Make the most of the new tax year with our instant access Cash ISA

Your interest is tax-free, no matter how much you earn

This year's allowance is £15,240

Apply now



We are the first Retail bank to be awarded the 5 star accreditation by Fairbanking.

Cash ISA Instant access tax-free savings


Our instant access Cash ISA lets you:

  • Access your money instantly – there are no withdrawal penalties, so you can take money out whenever you want
  • Save your way – either in a lump sum, by standing order or simply pay in when you want to
  • Maximise your cash ISA allowance – save from £1 up to £15,240 in the 2016/2017 tax year up to 5th April 2017.
  • Transfers in – bring all your cash ISAs together in one place
  • Watch your savings grow – interest is calculated daily and paid monthly directly into your account
  • Manage your account – Online, Mobile, in branch or by phone

What you should know

  • The interest rate is variable, so it can go up as well as down
  • Interest is paid monthly
  • Tax- free interest and tax free savings means that interest payable is exempt from UK income tax
  • Once you've paid in your full year's cash ISA allowance, you can't replace any money you've withdrawn in the same tax year

Please note: You will need your National Insurance number during the application.

Apply now


Transfer in


Effective until 30 October 2016

AER/Tax-free p. a. (variable)

Effective from 31 October 2016

AER/Tax-free p. a. (variable)

£1 - £24,999



£25,000 - £49,999



£50,000 - £99,999 0.75% 0.25%
£100,000 + 1.00% 0.50%

Annual Equivalent Rate (AER). This is a notional rate used for interest bearing accounts which illustrates the interest rate if paid and compounded each year. It helps you to compare the effective rates of credit interest on different accounts.

Tax-free interest means interest payable is exempt from UK income tax.

Mobile Banking. Should you decide you would like the added option to easily manage your instant access Cash ISA with our app, you can download the app here. It's easy to set up and top-up through the app. Functionality to open a cash ISA is only available on iPhone and Android.

Mobile Banking is available on selected smartphones to NatWest personal account customers, with Online Banking, a debit card, and a UK mobile number.

Need more help? Want to know more about cash ISAs?

Our practical guides, explanatory videos and simple FAQs will give you all the information you need.

Getting started with an ISA

Got a question?

Got a NatWest ISA? Manage your savings

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