NatWest Fixed Term Savings Account: review 2026

Overview: what the NatWest Fixed Term Savings Account is, and who it suits

NatWest's Fixed Term Savings Account is a straightforward fixed-rate deposit: you lock away a lump sum for either one or two years and receive a guaranteed AER for the full duration, regardless of what happens to the Bank of England base rate during that period. As at 26 October 2026, the account pays 4.11% AER on a one-year term and 4.15% AER on a two-year term for balances up to £99,999, rising to 4.20% AER (one year) and 4.25% AER (two years) on balances of £100,000 and above. The rate's guaranteed the moment you open the account, which is its central appeal. For savers who don't like watching variable-rate accounts drift downward every few months, that certainty is genuinely valuable.

This product suits people who already bank with NatWest and have a defined savings goal anchored to a specific date, for example funding home improvements after a fixed project timeline, building a deposit for a property purchase in twelve or twenty-four months, or simply parking redundancy money while deciding on a longer-term strategy. The key word is "already": NatWest requires an active NatWest current account, and new customers must open one before they can apply for the fixed-term product. That's friction and a step that a challenger bank wouldn't impose. For a closer look at the terms, see our review of NatWest.

The NatWest Fixed Term Savings Account is explicitly not suitable for anyone who might need to access their money before the term ends. There is no penalty-free withdrawal window. Early closure is possible, but NatWest applies charges that erode the interest earned, and in some scenarios you can receive back less than the equivalent of keeping funds in a top-paying easy-access account. Likewise, if your savings pot is small or you want to drip-feed money in over time, look elsewhere: you can't top up after the initial deposit (beyond a brief funding window before the term starts), and the product isn't available as a joint account.

The interest rate in detail: what the current AER actually means for your money

The current rate is tiered by balance and term. On a one-year term, NatWest pays 4.11% AER (4.03% gross) on balances from £1 to £99,999, and 4.20% AER (4.12% gross) on balances from £100,000 up to the £3,000,000 maximum. On a two-year term, the rate is 4.15% AER (4.07% gross) up to £99,999, and 4.25% AER (4.17% gross) from £100,000 upward. These figures are correct as at 26 October 2026, confirmed directly against NatWest's own product page. AER (Annual Equivalent Rate) accounts for the compounding effect of monthly interest payments, so the gross rate shown alongside it is the figure before that compounding is factored in. NatWest pays interest monthly, calculated daily and credited on the first business day of each month and on the maturity date, which means you see the income arrive every four weeks rather than as a single lump sum at the end. That's useful for savers who want to treat the interest as a small monthly income rather than a lump sum at maturity.

One detail worth understanding before you apply: NatWest reissues this product periodically under a new "Issue" number, and each issue can carry a different rate. The figures above are correct for the issue open at the time of writing, but the rate isn't a permanent fixture of the product. It's the rate on the current offer, which NatWest can withdraw or replace at any time. Always check the live rate on NatWest's own fixed term savings page immediately before applying, rather than relying on a rate quoted in any review, including this one.

In our test, the application process confirmed the rate clearly before commitment, and the first interest payment arrived on schedule with a breakdown visible in the mobile app. There aren't any monthly fees and no penalties simply for holding the account to maturity. However, the rate locks in only your initial deposit, and any additional money you want to save at the same rate must go into a separate account or a new fixed-term product opened later, at whatever rate then applies. That's a real limitation for anyone in an accumulation phase of life rather than a preservation phase.

Here's how that rate actually compares with the rest of the UK market.

According to DepositScout's fixed-bond tracker (dated October 2026), the average one-year fixed bond across the accounts it tracks pays 4.61% AER and the best available one-year fixed bond pays 5.15% AER, against a UK CPI inflation reading of 3.50% (ONS, September 2026). On that basis, NatWest's one-year rate ranks 68th out of 77 one-year fixed bonds tracked, and the two-year rate ranks 69th out of 75, both described by DepositScout as "well below average." The account still beats inflation on both terms, but a saver who shops around rather than defaulting to their existing current-account provider can currently find meaningfully better fixed-bond rates elsewhere. See the infographic below for the full comparison, and our wider market view here: Best bank account UK.

Taxation on interest: the Personal Savings Allowance and what NatWest reports

In the UK, interest earned on savings accounts is subject to income tax, but most savers benefit from the Personal Savings Allowance (PSA). Basic-rate taxpayers (20%) receive a PSA of up to £1,000 per tax year, meaning the first £1,000 of interest is received tax-free. Higher-rate taxpayers (40%) receive a PSA of £500. Additional-rate taxpayers (45%) don't get an allowance at all and pay tax on every pound of interest. These thresholds are unchanged for the 2026/27 tax year.

Because NatWest pays interest monthly, you will receive it across two tax years if you hold a one-year account that spans 6 April. That means your PSA position in each tax year independently determines your liability. A basic-rate taxpayer with, say, £20,000 in the account earns roughly £822 in the first twelve months at the current 4.11% AER tier, comfortably within the £1,000 allowance. At a balance where annual interest reaches £1,000, anything above that gives you a liability to report via self-assessment or HMRC's coding notice adjustment. You'll find the specifics collected here: NatWest Savings Account.

NatWest reports interest to HMRC automatically under the Common Reporting Standard, so HMRC will adjust your tax code or write to you directly if the interest pushes you above the PSA. You don't need to file a full self-assessment return simply because of savings interest unless you already file one for other reasons. Keep an eye on your annual interest statement in the NatWest app, which appears under the account details section and breaks out gross interest paid per tax year. There's a full guide on it: NatWest Business Current Account.

Opening the account: steps, identity checks and what to expect

The application is handled entirely within the NatWest mobile app or through online banking. There's no branch visit required, and NatWest doesn't post out physical documents for this product. The process typically takes under ten minutes for an existing NatWest current account holder. Applicants must be aged 16 or over, UK resident, and apply as a sole applicant; joint applications aren't accepted for this product. The minimum deposit is £1 and the maximum is £3,000,000 per term.

Here is the standard flow:

• Log in to the NatWest app or online banking portal.
• Navigate to the savings section and select Fixed Term Savings Account.
• Choose your term (one or two years) and enter the deposit amount.
• Confirm the linked funding account (your NatWest current account).
• Review and accept the terms, which include the early-closure charges schedule.
• Funds transfer immediately from your current account and the fixed-term account activates the same day.

New customers face an additional step: they'll need to open a NatWest current account first, which requires identity verification through biometric document scanning in the app. That process is generally completed within one working day, though NatWest may request additional documents for customers whose proof of address does not match their electoral roll record. Once the current account is active, the fixed-term account application follows the same in-app flow described above. The IBAN for UK NatWest accounts begins with GB, as expected for a domestic sterling account. Additional deposits are accepted only up to the start of the fixed term (subject to a £99,999 daily funding limit on a newly opened account); once the term has started, no further top-ups are possible.

What happens at maturity matters as much as what happens at opening, and it's easy to miss. Unless you actively opt out, NatWest automatically reinvests your balance and any accrued interest into a new Fixed Term Savings Account at whatever rate is then on offer, which may be higher or lower than the rate you originally locked in. NatWest sends a maturity pack roughly two weeks before the term ends explaining this choice. If you opt out instead, your money converts into a Primary Savings Account on the maturity date and becomes accessible the following business day.

If you need to exit before maturity, closing early requires 35 days' written notice to your branch, and NatWest deducts an early closure charge equal to the lower of the interest you've earned or 90 days' interest, so the total you receive will never fall below your original deposit. The charge is waived in cases of non-voluntary redundancy or death.

Safety: deposit protection and the institution behind the account

The NatWest Fixed Term Savings Account is covered by the Financial Services Compensation Scheme (FSCS), the UK's statutory deposit guarantee. Protection applies up to £120,000 per eligible depositor per authorised institution under standard circumstances. The FSCS limit rose from £85,000 to £120,000 on 1 December 2025. However, NatWest discloses FSCS protection up to £120,000 in its product documentation, reflecting the Temporary High Balance (THB) protection that applies for up to six months when a depositor holds a large sum arising from a qualifying life event, such as a property sale, a divorce settlement, or an inheritance. After six months, the standard £120,000 cap resumes.

The regulator's the Financial Conduct Authority (FCA) and the Prudential Regulation Authority (PRA). NatWest Group plc, which trades as NatWest, RBS, and Ulster Bank in various markets, is one of the UK's largest retail banking groups, with roots in the former National Westminster Bank founded in 1970. The UK government held a majority stake in NatWest Group following the 2008 financial crisis; as of 2026, that stake has been fully returned to the private sector following a public share offering. Whatever one thinks of the bank's historical track record, the combination of FSCS protection, FCA and PRA oversight, and the bank's systemic importance in the UK makes the credit risk of holding a fixed-term deposit here about as low as it gets in the British market.

Reputation and real customer experience

NatWest's Retail Bank serves 19 million customers across the UK, about one in three UK families, according to NatWest Group's own H1 2026 results. That scale means the fixed-term product's customer base is large and varied, which is worth bearing in mind when reading individual reviews: a handful of complaints or praise from any one source won't be representative on its own. NatWest's overall reputation among savings customers is mixed, but the fixed-term product generates a more focused and largely positive response from users who understood what they'd signed up for. The recurring praise centres on rate reliability: customers consistently note that the rate stated at opening was precisely the rate credited each month, without adjustments or surprise changes mid-term. The mobile app experience is also frequently cited positively, particularly the visibility of monthly interest credits and the ability to see maturity dates and instructions within the account dashboard.

Recurring complaints divide into two clear themes. The first is the current account prerequisite. Multiple reviewers describe a frustrating detour in which they opened a NatWest current account purely to access the fixed-rate savings product, then found themselves managing two accounts with a bank they hadn't originally chosen for everyday banking. The second theme is early closure. Customers who experienced a change in circumstances mid-term and needed to access funds ahead of maturity report that the charges were higher than they expected, despite being disclosed in the terms. The lesson reviewers draw consistently is that the product punishes circumstances it cannot predict, which is not a criticism of NatWest specifically but a structural feature of fixed-term savings that buyers should absorb before committing.

Customer service contacts related to the fixed-term account tend to go through the main NatWest telephone banking line or the in-app messaging system. Response times via messaging are generally rated as adequate rather than fast, and some users note that the fixed-term product's specific questions sometimes require escalation beyond the first line of support. None of this is unusual for a large retail bank, but savers accustomed to the rapid specialist support of standalone savings platforms may find it's slower going here.

Verdict: open this account or look elsewhere?

Open this account if you already hold a NatWest current account, have a lump sum of meaningful size you won't need to touch for one or two years, and want the certainty of a fixed rate without shopping around specialist savings platforms.

At 4.11%-4.25% AER depending on term and balance, the rate comfortably beats UK CPI inflation (3.50%, September 2026) and is competitive within NatWest's own product range, but it isn't a best-buy: DepositScout's October 2026 fixed-bond tracker places it 68th of 77 one-year bonds and 69th of 75 two-year bonds, "well below average" against a market averaging 4.61% (one year) and 4.69% (two years), with the best available fixed bonds paying up to 5.15%-5.21% AER. Monthly interest payments are a practical advantage for anyone treating the income as a predictable supplement to other cash flow, and NatWest's own current account customers avoid the extra step of opening a new banking relationship elsewhere. Think of the gap to the best-buy rate as a convenience premium: you're paying roughly one percentage point for the ease of staying with a bank you already use, not getting a mispriced deal.

Look elsewhere if you don't already bank with NatWest, if there's any realistic scenario in which you might need the money before the term ends, or if you want to continue adding to the pot after opening. Given that NatWest's own rate sits well below the UK fixed-bond market average on both terms, a saver willing to shop around and open an account with a different provider can currently do meaningfully better on rate alone.

Dedicated savings platforms such as those from building societies or fintech providers also lack the current-account gate, making them more accessible for savers who simply want a fixed return without a banking relationship attached. If you'd rather keep flexibility over a fixed term, NatWest's own Digital Regular Saver pays a variable rate that can be considerably higher on smaller balances, without locking your money away.