The flurry of ISA season is over but the new tax year brings a higher ISA allowance of £5,640 and several attractive places to put it.
One of the highest-paying ISA accounts on offer is the Nationwide Flexclusive account, with an interest rate of 4.25%. This is rare for an instant-access account - to get a similar return from any other provider, you'd have to lock your money away for several years.
However, Nationwide isn't being too generous - there are a few catches.
First, the rate has a bonus of 2.25% until 31 October 2013, so at this point you'll need to move your money elsewhere or your interest rate will plummet.
Your primary current account will also need to be the Nationwide FlexAccount holder, which requires a deposit of at least £750 each month, and transfers in from other ISAs aren't allowed. But as the rate is leagues above anything else around, it could be worth switching to take advantage of it.
The account can be opened with £1 and the rate is variable, but guarantees to be at least 1.5% above the Bank of England's base rate until 1 January 2014.
Go to nationwide.co.uk for more details or call 0800 302010. But be aware that the account can only be operated in-branch.
It's rare to find an instant-access account with such a high rate, especially one that is also tax-free. However, you'll have to put in the legwork of switching current accounts in order to access it and given the 4.25% rate only lasts 18 months it may not be worth the hassle.
But if you are willing to switch providers, and if you remember to keep an eye on the rate, you'll be rewarded with a high return and the flexibility to withdraw or deposit money as and when you need to.