Nationwide Boosts Savings Rates to 4.55% With More Deals for UK Savers

Nationwide Building Society has increased interest rates on several fixed-term savings products, giving UK savers the chance to earn up to 4.55% AER as competition for customers' cash intensifies.

The building society launched new one-year and two-year Fixed Rate Bonds and Cash ISAs with higher rates, with the changes taking effect on 26 August 2026. Nationwide's new two-year Fixed Rate Cash ISA pays 4.55% AER tax-free, while its one-year Fixed Rate Cash ISA offers 4.50% AER tax-free.

The move gives savers another opportunity to lock in a competitive return, particularly those who are prepared to leave their money untouched for a fixed period.

Nationwide Raises Rates on Fixed Savings

The latest changes cover both conventional fixed-rate savings and tax-free Individual Savings Accounts.

Nationwide's two-year Fixed Rate Cash ISA now pays 4.55%, while the one-year version pays 4.50%. Because these are Cash ISAs, interest earned is tax-free, subject to the usual ISA rules and annual allowance.

The building society has also launched new Fixed Rate Bonds with higher rates, giving customers additional options depending on how long they are willing to lock away their money.

Fixed-rate products can be particularly attractive when savers want certainty because the advertised interest rate remains fixed for the agreed term.

However, customers should consider whether they may need access to their money before committing to a fixed account.

How Much Could 4.55% Earn?

The difference between savings rates can become significant as balances increase.

For example, £10,000 held at a hypothetical 4.55% annual rate would generate approximately £455 in interest over one year, before considering the specific terms of the account and assuming the rate remained applicable.

On £20,000, the equivalent figure would be approximately £910 over a year.

The actual return from Nationwide's fixed products will depend on the specific account, term and balance, while customers should also consider whether they can access their money during the fixed period.

For Cash ISAs, the tax-free status can make the headline rate particularly useful for savers who have already used, or expect to use, their Personal Savings Allowance.

Nationwide Rates Competitive but Not the Highest

The latest increase comes as competition remains strong across Britain's savings market.

Moneyfacts reported on 27 August that the best savings rates available in the wider UK market remained around 5% AER, meaning Nationwide's new 4.55% rate is competitive but does not necessarily represent the highest return available.

MoneySavingExpert also listed several accounts offering rates around or above 4.5%, although some come with conditions, limits or introductory bonuses.

This means savers should compare the full terms rather than choosing an account based solely on its headline interest rate.

What Nationwide's Move Means for Savers

Nationwide's latest changes provide savers with another option at a time when interest rates across the market continue to shift.

The key question for savers is not simply whether 4.55% looks attractive, but whether the rate, fixed term and account conditions match their financial needs.

With Nationwide now offering up to 4.55% on its new fixed Cash ISA range, UK savers have another reason to review where their money is held before committing to a new savings deal.