Cash ISAs are a flexible and tax-efficient way to save and everyone aged 16 or over can save up to £5,760 tax-free in a cash ISA with one provider, each tax year. Unique to Britain's high streets, Nationwide’s Champion ISA is a branch based cash ISA that offers the reassurance of a rate promise as every month we find the five highest branch based cash ISA interest rates from a group of 8 high street banks, these rates are sourced and verified by Defaqto. The average of the five highest rates becomes the Champion ISA interest rate for the next month so you don't have to keep looking around for a competitive savings rate - we do it for you.
Your Champion ISA is run via any Nationwide branch, you can also pay money in via standing order and transfer money to and from your account using Internet Banking.
For full account details see the Champion ISA Rates & account details page
Find out how to apply
Visit our ISAs explained section to find out what ISAs are, how they work and for more information on ISA limits.
Find out more
If you've used your cash ISA allowance this tax year you could still invest up to a further £5,760 in a Stocks & Shares ISA. This could help you use your full £11,520 annual ISA allowance this tax year.
If you want to open and manage your ISA online then you may want to consider our instant access Web ISA.
AER stands for Annual Equivalent Rate and illustrates what the interest rate would be if interest was paid and compounded once each year.
The gross rate of interest is the interest rate payable before any income tax is deducted (if you do pay tax).
The net rate of interest is the interest rate payable after any income tax is deducted (if you do pay tax).
Tax-free is the contractual rate of interest payable where interest is exempt from income tax.
The tax information provided is based on our current understanding of current law and HM Revenue & Customs practice which can change.
FSCS - Protecting your money. Find out more
Your eligible deposits with Nationwide Building Society are protected up to a total of £85,000 by the Financial Services Compensation Scheme, the UK's deposit protection scheme. This limit is applied to the total of any deposits you have with the following: Nationwide Building Society, Cheshire Building Society, Derbyshire Building Society, Dunfermline Building Society and Nationwide UK (Ireland). Any total deposits you hold above the £85,000 limit between these brands are not covered.
Please click here for further information or visit www.fscs.org.uk