ISA - What is an ISA? - NatWest

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ISA Accounts

Everything you need to know about Individual Savings Accounts

Compare our cash ISAs Manage your existing NatWest cash ISA Stocks & Shares ISA with NatWest Invest
Add your signposting title here… Cash ISA: 1.00% Bonus interest on new savings of £20,000

Get up to £200 extra tax-free on your savings when you pay £20,000 into our Cash ISA by 5 May 2017. Earn a bonus interest rate of 1.00% tax-free/0.89% AER (fixed) for 12 months when you save £20,000 by 5 May 2017. To get the full £200 tax-free interest, you need to maintain at least £20,000 in your Cash ISA until 17 May 2018. After the bonus interest rate ends, you’ll earn from 0.01% tax-free/AER (variable).

More info and apply

Compare cash ISAs

Help to Buy: ISA

A helping hand towards your first home

Full details & apply

Cash ISA

Instant access tax-free savings account 

Full details & apply

Fixed Rate ISA

Fixed interest rate tax-free account for one or two years 

Full details & apply
Decide if it’s right for you

If you are saving to buy your first home, save money into a Help to Buy: ISA and the UK Government will boost your savings by 25%.

You want tax-free savings within the annual limit and want instant access to your money

You want tax-free savings within the annual limit and to know how much interest you’ll earn in advance. You’re happy to leave your money untouched while you save  


Help to Buy: ISA

Paid monthly

Cash ISA

Paid monthly  

Fixed Rate ISA

Paid annually  

  • 2.00% AER on all balances
  • 1.98% tax free rate
Interest rate unit: AER/ tax-free p.a. (variable)

Without bonus - tax-free p.a. (variable)/AER:

  • 0.01% for balances under £25,000
  • 0.05% for balances between £25,000 and £49,999
  • 0.25% for balances between £50,000 and £99,999
  • 0.50% for balances over £100,000


With bonus.

1.00% tax-free p.a. (fixed) 12 month interest rate bonus on first £20,000, following £20,000 deposit and/or transfer between 6th April and 5th May 2017. Please see Bonus Interest Table.

1 year fixed

  • 0.70% for balances between £1,000 and £24,999
  • 0.75% for balances over £25,000

2 year fixed

  • 0.80% for balances between £1,000 and £24,999
  • 0.85% for balances over £25,000

Interest rates unit: AER/ tax-free p.a. (fixed)
Minimum deposit to open account




Key conditions and limitations
  • You can save a maximum of £1,200 in the first calendar month of funding and then up to a maximum of £200 a month
  • Available to first time buyers aged 16 or over who are UK residents and have never owned a residential property or any interest in land in or outside the UK

Bonus interest will only be earned if between 6th April 2017 and 5th May 2017 you:

  • deposit your full £20,000 2017/2018 ISA allowance; or
  • transfer in at least £20,000 from an existing ISA you hold; or
  • grow your balance by at least £20,000 via a combination of the above
  • An Early Closure Charge may be applicable. 
Cash ISAs What is a cash ISA?
1.00% Bonus interest on new savings of £20,000 in a Cash ISA

Earn a bonus interest rate of 1.00% tax-free, 0.89% AER (fixed), for 12 months when you save £20,000 this tax year by 5 May 2017. To get the full £200 tax free interest, you need to maintain at least £20,000 in your Cash ISA until 17th May 2018. After the bonus interest rate ends on 17 May 2018, you'll earn from 0.01% tax-free / AER (variable). See all info here.

Transfer in from previous years' ISAs

If you want to move your current or previous cash ISA balances between providers, there’s a simple ISA transfer form you can complete that will safeguard your tax-free entitlement.

Subscribe to both a Cash ISA and Help to Buy: ISA in the same tax year

You can save in a Cash ISA and a Help to Buy: ISA if they're both with NatWest, as we count them as one overall Cash ISA subscription. 

Tax-free interest

An ISA is a savings account that means you don't pay tax on any interest earned. You can deposit up to £20,000 into an ISA during the 2017/2018 tax year (up until 5th April 2018).

Here are some handy resources to help you get to grips with ISAs:

NatWest guide to ISAs (opens in a new window)

Add your signposting title here… Stocks & Shares ISA with NatWest Invest

NatWest Invest is a brand new way to invest online. You decide the time, and you decide the level of risk.  It’s simple, you have control, and the beauty of it is you can invest:

  • From just £500
  • With a monthly contribution from £50
  • Into a stocks and shares ISA

The value of investments can fall as well as rise and you may get back less than you invest. Tax rules may change in the future and any benefits to you depend on your individual circumstances.

NatWest Invest does not offer advice on your personal financial circumstances or the suitability of each investment fund for you. If you’re not sure you should speak to a financial adviser before investing.

You need to have online banking to use NatWest Invest.

Explore natWest Invest
Frequently searched-for information Cash ISA Reactivation & ISA Transfer

If you haven't paid into your existing cash or Help to Buy: ISA in an entire tax-year:

You'll have to reactivate it by completing one fo the following forms: 

Cash ISA reactivation.

Help to Buy: ISA reactivation.

If you want to transfer an existing cash ISA to us:

Our dedicated ISA transfer page will guide you through the process.

Key definitions

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 p.a. – This means interest payable is exempt from UK income tax.


ISAs made simple

Find out how you can make the most of tax-free saving with our easy to follow ISA guide

Easy ISA

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