Best 5 Year Fixed Rate Cash ISAs in October 2026

Compare 13 five-year fixed rate cash ISAs paying up to 5.25% AER

The best five-year fixed rate cash ISA pays 5.25% AER tax-free, from Shawbrook. We track 13 five-year fixed ISAs from 13 providers. 12 take transfers in, so you can move an older ISA across without using this year's allowance.

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Last updated
Shawbrook bank logo

Shawbrook

5.25%
AER
Fixed
Interest Paid
Monthly/Annually
Access
5 Years
Tandem Bank bank logo

Tandem Bank

5.13%
AER
Fixed
Interest Paid
Monthly
Access
5 Years
Castle Trust Bank bank logo

Castle Trust Bank

5.12%
AER
Fixed
Interest Paid
On Maturity
Access
5 Years

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Close Brothers Savings bank logo

Close Brothers Savings

5.12%
AER
Fixed
Interest Paid
Annually/On maturity
Access
5 Years
Yorkshire Building Society bank logo

Yorkshire Building Society

5.00%
AER
Interest Paid
Monthly
Access
Instant
Nottingham Building Society bank logo

Nottingham Building Society

5.00%
AER
Fixed
Interest Paid
Annually
Access
5 Years
Skipton Building Society bank logo

Skipton Building Society

5.00%
AER
Fixed
Interest Paid
Monthly/Annually
Access
5 Years
Vida Savings bank logo

Vida Savings

5.00%
AER
Fixed
Interest Paid
Monthly/Annually
Access
5 Years
Hampshire Trust Bank bank logo

Hampshire Trust Bank

4.95%
AER
Fixed
Interest Paid
Annually
Access
5 Years
Darlington Building Society bank logo

Darlington Building Society

4.95%
AER
Fixed
Interest Paid
Annually
Access
Until 31.10.2031
Furness Building Society bank logo

Furness Building Society

4.91%
AER
Fixed
Interest Paid
Anniversary
Access
5 Years
Marsden Building Society bank logo

Marsden Building Society

4.77%
AER
Fixed
Interest Paid
Monthly/Annually
Access
Until 30.09.2031

Showing 12 of 13 results

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Our top 3 five-year fixed ISAs reviewed

Shawbrook bank logo

Shawbrook

1. 5 Year Fixed Rate Cash ISA

5.25% AER fixed

Best for: the highest rate

Shawbrook's 5 Year Fixed Rate Cash ISA pays 5.25% AER tax-free, fixed for 5 years. That's the top rate on this page right now.

You need at least £1,000 to open it. £10,000 left in over the 5 years would earn about £2,915.

Min balance
£1,000
Max balance
£250,000
Access
5 Years
Interest paid
Monthly/Annually

Worth knowing

  • Your money is locked away until the fixed term ends.
Our take · Jan Watermann, Co-Founder

Shawbrook's 5 Year Fixed Rate Cash ISA is currently the market-leading Cash ISA at 5.25%, sitting 2.15% above CPI inflation of 3.1% (Aug 2026), which makes it a genuinely useful real-terms return for anyone comfortable locking money away for five years. It accepts transfers in and works from a £1,000 minimum, so it suits savers consolidating existing ISA pots as well as new money.

The main catch is straightforward: your money is tied up for the full five years, so this is only right for funds you are certain you will not need.

Tandem Bank bank logo

Tandem Bank

2. 5 Year Fixed Rate Cash ISA

5.13% AER fixed

Best for: taking money out and putting it back

Tandem Bank's 5 Year Fixed Rate Cash ISA pays 5.13% AER tax-free, fixed for 5 years. That's 0.12 percentage points below the top rate here.

You can open it with as little as £1. £10,000 left in over the 5 years would earn about £2,842.

Min balance
£1
Max balance
£20,000
Access
5 Years
Interest paid
Monthly

Worth knowing

  • Your money is locked away until the fixed term ends.
Our take · Jonny Pease, Co-Founder

Tandem Bank's 5 Year Fixed Rate Cash ISA pays 5.13%, which sits above the cash ISA market average and just 0.12% behind the category leader at 5.25% (Shawbrook also offers a five-year cash ISA at that rate). At 2.03% above August 2026 CPI of 3.1%, your money is genuinely growing in real terms, which matters over a five-year horizon.

The main catch is the lock-in: early withdrawal costs 365 days' interest, so this suits savers who are confident they won't need the money, with deposits from £1 up to the £20,000 ISA allowance.

Castle Trust Bank bank logo

Castle Trust Bank

3. 5 year Fixed Rate e-Cash ISA

5.12% AER fixed

Castle Trust Bank's 5 year Fixed Rate e-Cash ISA pays 5.12% AER tax-free, fixed for 5 years. That's 0.13 percentage points below the top rate here.

You need at least £1,000 to open it. £10,000 left in over the 5 years would earn about £2,836.

Min balance
£1,000
Max balance
£500,000
Access
No access until maturity
Interest paid
On Maturity

Worth knowing

  • Your money is locked away until the fixed term ends.
Our take · Jan Watermann, Co-Founder

Castle Trust Bank's 5 Year Fixed Rate e-Cash ISA pays 5.12%, which sits above the cash ISA market average but 0.13% behind the category leader at 5.25%. At 2.02% above CPI inflation of 3.1% (Aug 2026), the real return is decent for anyone willing to commit for the full five years.

The hard catch is that there is no access until maturity, so this suits savers who are confident they will not need the money for the entire term. If you want a near-identical rate with the same term, Tandem Bank's 5 Year Fixed Rate Cash ISA offers 5.13%.

Cash ISA transfer offers

Rewards for moving a cash ISA you already have to a new provider.

See all ISA transfer offers

How a five-year fixed ISA compares

The best rate in each option today.

ProviderOptionBest rate
E
eToro		Easy access cash ISA4.87%AER
TB
Tandem Bank		3 year fixed ISA5.13%AER
S
Shawbrook		5 year fixed ISA5.25%AER
GB
GB Bank		5 year fixed rate bond5.37%AER

Good to know

The details that change what a fixed ISA pays you.

Is fixing for longer worth it?

5.43%

two-year fixed ISA rate needed in October 2029 to match

Or fix for three years at 5.13% and go again in October 2029. To come out level, that next fix would need to pay at least 5.43%.

Expect rates above that? Go shorter. Expect them lower? Lock in now.

ISA or bond after tax?

6.73%

a bond must pay to beat this ISA (basic rate; 9.05% higher rate)

Before tax, the best five-year bond pays 0.12 percentage points more than this ISA. It only wins while your interest stays tax-free: about £18,600 saved for basic-rate taxpayers, £9,300 for higher-rate.

No five-year bond pays 6.73% right now.

The cash ISA limit is changing

£12,000

cash ISA limit for under-65s from 6 April 2027

It caps new money only, not what you already hold. Over-65s keep £20,000 (GOV.UK).

A fix opened now ends in October 2031. Rolling it into another ISA is a transfer, so it won't count towards the £12,000.

Flexible ISAs

2 of 13

are flexible

Take money out and put it back in the same tax year without using more allowance. The exit penalty usually still applies.

Best flexible: Tandem Bank at 5.13%, 0.12 percentage points less than the top rate.

Moving an existing ISA

12 of 13

accept transfers in

Ask the new provider to move it for you. Withdraw it yourself and it loses its ISA status.

Before you open one

Quick checks that save you money later.

  1. Transfer, don't withdraw

    Ask the new provider to move your old ISA. Withdrawing it yourself loses the tax wrapper.

  2. Check the minimum

    5 of these ISAs open from £1. The rest need £500 to £10,000.

  3. Diary October 2031

    At maturity most providers move your money into a variable ISA paying much less. Set a rate alert.

  4. One FSCS limit per banking licence

    That's £120,000 across every account you hold under the same banking licence, ISA or not.

Recent rate changes

The latest moves, newest first.

  1. VS
    Vida Savings 5 Year Fixed Rate ISA5.11% →5.00%
  2. SB
    Skipton Building Society 5 Year Fixed Rate Cash ISA4.77% →5.00%
  3. TB
    Tandem Bank 5 Year Fixed Rate Cash ISA5.11% →5.13%
  4. CT
    Castle Trust Bank 5 year Fixed Rate e-Cash ISA4.81% →5.12%

About five-year fixed ISAs

Five-year fixed ISAs are about the exit penalty as much as the rate. Read it on the product page before you open one.

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5 Year Fixed Rate Cash ISAs FAQs

Answers use the rates in the table above.

Other fixed ISA terms

The best rate at each term today.

Keep comparing

5 Year Fixed Rate Bonds

Top rate 5.37% AER from GB Bank.

All fixed rate cash ISAs

Every fixed ISA term side by side.

ISA Calculator

See what your ISA could grow to.

Rate Alerts

Hear when a better five-year rate launches.

Jonathan Pease

Written by

Jonny Pease

Jan Watermann

Reviewed by

Jan Watermann

Last updated

How we rank·How we make money·Editorial policy

This page is for information only and is not financial advice. Rates and account terms can change at any time — always confirm the details on the provider's website before opening an account. Read our full disclaimer.

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