A Fixed Rate ISA is a savings account where you put away a set amount of money for a fixed period of time, usually 1-3 years. In return for locking away your money, you’ll receive a guaranteed interest rate for the set time period. Because it’s an ISA, your interest will also be tax-free, unlike if you saved into a normal savings account.
You can save up to £20,000 in ISA accounts across different providers each tax year. Tax treatment depends on individual circumstances and may be subject to change in the future.
If you’re looking for the best Fixed Rate ISA on the market, keep in mind that the familiar high-street banks don’t always offer the most competitive rates.
Nationwide’s current best Fixed Rate ISA is their 1 Year Fixed Rate Cash ISA offering 4.00% AER (fixed). Although this is a competitive interest rate for a Fixed Rate ISA account, there are other Fixed Rate ISAs offering higher rates than this currently on the market.
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Lock your savings away for 12-months with our Fixed Rate Cash ISA and earn {{FISA_RATE_AER}}% AER (fixed). Add more funds to lock in for 12 months from the date they're added, at the rate available at the time.
Nationwide currently offers four Fixed Rate ISAs, ranging from 1 year to 5 years, and offering interest rates between 3.80% and 4.00% AER (fixed). But these rates are not the most competitive on the market for Fixed Rate ISAs, and you can find higher rates elsewhere. Once the fixed term has ended on either account, your account will automatically mature into Nationwide’s Instant Access Cash ISA, which offers a substantially lower rate of interest.
You can see Nationwide’s full list of Cash ISAs here
Rates accurate as of October 2025.
Yes, you can withdraw your money from a Nationwide Fixed Rate ISA, but if you do this before the fixed term ends, you’ll pay an early access charge. This is equivalent to 60-300 days' interest, depending on the length of the Fixed Rate ISA you go for. At the end of the fixed term, you can ask Nationwide to close the account, which will enable you to withdraw all your funds.
Yes, you can transfer money into a Nationwide Fixed Rate ISA, but you have to do this in a Nationwide branch. You can’t initiate a transfer online or via the Nationwide app, even if you are transferring money from another Nationwide account.
Although a lot of high street banks offer Fixed Rate ISAs and opening an account with them may seem the easiest option, they don’t always offer the best Fixed Rate ISA rates. To find the best Fixed Rate ISAs, compare accounts from different providers, including smaller providers you might not have heard of before. As well as the rate, look at if the provider ticks other boxes, like having excellent customer service, or an easy-to-use savings app with intuitive savings features to help you save more.
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