Nationwide Raises Fixed Rate Savings and ISA Rates to 4.55%

What Nationwide has changed

The changes apply to new deposits made from 26 August 2026. Existing accounts are unaffected by the rate rise and continue to pay the rate agreed when the account was opened. The increases follow an earlier adjustment to short term fixed rate products earlier in August 2026, making it the second such move in the month.

Nationwide's fixed rate range is available to new and existing customers, with accounts managed online, by phone or in branch. The minimum deposit required to open either the bond or the cash ISA is £1, and there is no maximum balance for the bond, while the cash ISA is subject to the annual ISA allowance.

The society operates as a mutual, owned by its members, and its savings products are widely available across the UK. The rate changes reflect the current interest rate environment and the society's approach to pricing its fixed rate range.

Fixed rate bonds and fixed rate cash ISAs: the difference

A fixed rate bond pays a set rate of interest for a fixed term, typically one or two years, with no access to the money without an early withdrawal penalty. A fixed rate cash ISA works in the same way, but the interest is free of UK income tax and the account sits within the annual ISA allowance.

The main difference between the two products is tax treatment. Interest earned on a fixed rate bond is subject to UK income tax, with the personal savings allowance determining how much tax is due. A fixed rate cash ISA shelters interest from income tax entirely, up to the annual ISA limit.

Both products require the saver to commit their money for the full term. Early access is either not permitted or incurs a penalty, typically a loss of a number of days' interest. This makes them suitable for money that will not be needed during the term, such as a lump sum set aside for a known future goal.

For savers who have already used their ISA allowance, a fixed rate bond may be the relevant option. For those with remaining allowance, a fixed rate cash ISA offers the same fixed rate structure with the additional tax benefit. The choice depends on individual circumstances, including tax position and access needs.

How the new rates compare with the wider market

At 4.55% AER for the two year fixed rate cash ISA and bond, Nationwide's rates are competitive within the UK savings market, though not the highest available. Some providers have offered rates around 5% AER on similar fixed term products in recent months.

The trade off for savers considering Nationwide's fixed rate range is the combination of branch access, a low minimum deposit of £1, and the society's mutual ownership model, against potentially higher rates available elsewhere. Nationwide's rates are set with reference to the broader market, but the society does not aim to lead on rate alone.

For the one year products, 4.50% AER is also within the competitive range for that term, though again not the top rate on offer. The gap between the top paying providers and Nationwide's rates is typically small, often a fraction of a percentage point.

Savers comparing fixed rate products should consider the full terms and conditions, including any early access penalties, minimum and maximum deposit limits, and whether the account can be managed in the way they prefer. Rate alone does not determine the most suitable product for an individual's circumstances.

How the Bank of England base rate feeds through to savings

Savings rates broadly track the Bank of England base rate, which has been held at 3.75% since the Monetary Policy Committee's decision on 30 July 2026. The next decision is scheduled for 17 September 2026. Fixing a rate now locks in the current level regardless of future base rate moves.

When the base rate rises, savings rates tend to follow, though not always immediately or by the same margin. When the base rate falls, savings rates typically decrease as well, with fixed rate products affected only when the term ends and the saver reinvests.

Choosing a fixed rate product means accepting that if the base rate rises during the term, the saver will not benefit from the increase until the term matures. Conversely, if the base rate falls, the fixed rate provides protection against lower returns for the duration of the term.

The current base rate of 3.75% reflects the Bank of England's assessment of inflation and economic conditions. The path of future base rate decisions is uncertain and depends on incoming data. Fixed rate savings provide certainty of return for a defined period, which some savers may value in an environment of potential rate changes.

The cash ISA allowance and the change coming in April 2027

The overall ISA allowance is £20,000 for the 2026/27 tax year, and the full amount can currently be paid into a cash ISA. From 6 April 2027, the amount that under 65s can pay into a cash ISA each year falls to £12,000, with the remaining £8,000 of the overall allowance usable only in a stocks and shares ISA.

The change was announced in the Autumn Budget 2025 and is set out on GOV.UK. Savers aged 65 and over will keep the full £20,000 cash ISA allowance, meaning the reduction applies only to those under that age.

The overall ISA allowance of £20,000 remains unchanged. The adjustment affects only the split between cash and stocks and shares ISAs for under 65s. The new £12,000 cash ISA limit for this group takes effect from the start of the 2027/28 tax year on 6 April 2027.

For savers considering a fixed rate cash ISA now, the current £20,000 cash ISA allowance applies for the 2026/27 tax year. Those who are under 65 and plan to use a cash ISA in future tax years will need to account for the reduced limit from April 2027. The change does not affect existing ISA balances or the ability to transfer between ISA types.

What to check before locking money away

Before committing to a fixed rate savings product, savers should confirm that the money can be left untouched for the full term, and should compare the rate and conditions with other available options. Eligible deposits are protected by the Financial Services Compensation Scheme up to £120,000 per person per authorised firm.

The FSCS protection limit rose from £85,000 to £120,000 on 1 December 2025. Temporary high balances are protected up to £1.4 million for six months, covering certain events such as the proceeds of a house sale or an inheritance. This protection applies per person, per authorised firm, not per account.

Savers should also check the early access terms. Most fixed rate products either do not permit access before maturity or apply a penalty, often equivalent to a number of days' interest. Understanding these terms before depositing is important, as unexpected access needs could result in a reduced return.

The information in this article is factual and does not constitute financial advice. Savers should consider their own circumstances, including their tax position and access requirements, when choosing between savings products. Comparing the full terms and conditions of any product before opening an account is advisable.

Frequently asked questions

What are Nationwide's new fixed rate savings and cash ISA rates?

The two year Fixed Rate Bond and two year Fixed Rate Cash ISA pay 4.55% AER, and the one year versions pay 4.50% AER, with the ISA versions tax free, from 26 August 2026.

When did the new Nationwide rates take effect?

The changes took effect on 26 August 2026 and were the second short term fixed rate increase Nationwide made that month.

What is the difference between a fixed rate bond and a fixed rate cash ISA?

Both fix a rate for a set term with limited access. The cash ISA pays interest free of UK income tax within the annual ISA allowance, while the bond does not.

Is money held with Nationwide protected if the society fails?

Eligible deposits are protected by the Financial Services Compensation Scheme up to £120,000 per person per authorised firm, a limit that rose from £85,000 on 1 December 2025.

Will the cash ISA allowance change?

The cash ISA allowance is £20,000 for 2026/27 but falls to £12,000 for under 65s from 6 April 2027, while the overall ISA allowance stays £20,000. Savers aged 65 and over are unaffected.