Aldermore Savings Accounts: The Fixed-Term Specialist

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Nine months, one year, eighteen months, two years, three, four and five: Aldermore runs the deepest fixed-term ladder of any provider in this comparison, and it is the only one here offering a four-year bond at all. Which? currently names that four-year bond at 4.61% AER as its four-year best buy. Choosing a term precisely — rather than rounding to whatever a bank happens to offer — is the reason to be here.

The cash ISA range is stronger still. The three-year Fixed Rate Cash ISA pays 4.75% AER, the highest fixed ISA rate across the five providers reviewed in this cluster, and Aldermore holds the Defaqto Banking Award 2026 for Fixed Term Cash ISAs. It is also a Which? Recommended Provider, cited with an above-average customer score and five-star online banking.

Where it falls away is instant money. The Easy Access Account pays 2.25% against Cynergy's 4.55% and Close Brothers' 3.85%. Aldermore is a place to lock money up, not to leave it loose.

Seven fixed terms, and the only four-year bond here

Aldermore's Fixed Rate Savings range starts at a £1,000 minimum and covers:

• 5 years — 4.65% AER
• 4 years — 4.61% AER (Which? four-year best buy)
• 3 years — 4.55% AER
• 2 years — 4.50% AER
• 18 months — 4.50% AER
• 1 year — 4.44% AER
• 9 months — 4.15% AER

The value of that granularity is easy to miss. If you know money is needed in roughly eighteen months, an 18-month product at 4.50% beats parking it in a one-year bond at 4.44% and then dropping to an easy access rate for six months. The nine-month option does the same job for short, dated commitments — a tax bill, a completion date — that a twelve-month bond would strand.

Rates across the ladder sit within 50 basis points of each other, so the curve is unusually flat. There is little reward for going from three years to five (4.55% to 4.65%), which argues for keeping the term short unless you have a specific reason not to. Aldermore charges an interest deduction for early access to any fixed product — there is no free exit.

Cash ISAs from nine months to three years

The Fixed Rate Cash ISA range, also £1,000 minimum, runs:

• 3 years — 4.75% AER tax-free
• 2 years — 4.72%
• 1 year — 4.60%
• 15 months — 4.25%
• 9 months — 4.03%

The three-year at 4.75% is the best fixed ISA rate in this comparison, ahead of Nationwide's 4.70% five-year and Santander's 4.70% ceiling. Note the shape of the curve: the 15-month sits below the one-year, so pay attention to the specific term rather than assuming longer means better.

Elsewhere in the tax-free range, the 60 Day Notice Cash ISA pays 3.51% and the Easy Access Cash ISA 2.25%. The 45 Day Notice Account, outside the ISA wrapper, pays 4.05% — a reasonable middle ground for money you can plan six weeks ahead for.

The Defaqto Banking Award 2026 for Fixed Term Cash ISAs is a consistency measure rather than a single-day snapshot: qualifying products have to hold a top-fifteen position for ten of twelve months, and only 29 products out of 2,114 assessed won across all categories.

Withdrawals counted per year, not per month

Aldermore's access accounts use a different clock from its rivals. Nationwide and Santander count withdrawals per calendar month; Aldermore counts them per year.

• Reward ISA Single Access — 4.00% if you make one withdrawal or fewer a year, dropping to 2.00% thereafter. £100 minimum
• Reward ISA Double Access — 3.75% for up to two withdrawals a year, then 2.00%. £100 minimum
• Double Access Account — 3.75% for up to two withdrawals a year, then 1.50%. £1,000 minimum
• Regular Saver — 4.20%, £25 minimum, maximum £300 a month
• Easy Access Account — 2.25%, £100 minimum

An annual allowance suits savers whose money moves rarely but unpredictably; a monthly allowance suits regular, small drawdowns. Neither is better in the abstract — match it to your actual behaviour. The cliff-edges are real: breach the count on the Double Access Account and the rate halves to 1.50% for the remainder.

The Regular Saver takes £300 a month, a 50% higher cap than Santander's or Nationwide's £200, but at 4.20% rather than 8.00% or 6.50%. Over a year, the larger cap does not compensate for the rate gap unless you have already filled the better accounts.

Independent recognition and the complaints record

Aldermore is one of only two providers in this cluster holding both a Which? Recommended Provider badge and a Defaqto Banking Award 2026. Which? cites an above-average customer score and five-star online banking.

The complaints data is the strongest signal in the set. The Financial Ombudsman Service recorded 74 new cases against Aldermore between 1 July 2025 and 31 March 2026 — the lowest volume of all five providers, and a genuinely notable figure given the size of its deposit base. Per-firm uphold percentages are published only in an FOS spreadsheet we could not access and remain unverified. At firm level, FCA data for 2025 H2 shows 1,445 complaints opened — 754 in banking and credit cards, 691 in home finance, so a substantial share relates to mortgage lending rather than savings.

Aldermore holds its own banking licence, not shared with any other retail brand, so the £120,000 FSCS limit applies cleanly without the aggregation problem that affects Nationwide/Virgin Money and Santander/cahoot savers.

Where Aldermore is beaten

Instant access is the weak flank. At 2.25%, the Easy Access Account is roughly half what Cynergy advertises and well behind Close Brothers' bonus-free 3.85%. If a large part of your savings needs to stay liquid, that money should sit elsewhere and only your term deposits should come here.

There is also no branch network — everything runs online or by phone. That is unremarkable for a specialist savings bank, but worth knowing if you expect to sort a problem face to face. Aldermore does at least keep entry costs low: £25 on the Regular Saver and £100 on the Reward ISAs and Easy Access, against the £10,000 that Close Brothers demands on every single product.

Figures were taken from each provider's own published terms on 15 August 2026. Variable rates can change at any time — confirm the current rate with the provider before applying.