2-Year Fixed Cash ISAs
Compare leading 2-Year Fixed Cash ISA rates and discover the benefits and considerations of fixing your savings rate for two years. Understand interest-rate certainty, early-access penalties and what happens when your account matures.
Current 2-Year Fixed Cash ISA rates
Castle Trust BankHistorical rate trends
Daily snapshots of the average AER for five tracked products. Historical figures, not rates available today.
9 complete daily observations · Historical tracked top-five average AER · Rates powered by DepositScout. These historical averages are not today’s available rates.
Compare the top five 2-Year Fixed Cash ISAs
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Rates powered by DepositScout. Last checked: 30 Oct 2026, 14:53 UTC. Rates can change; this is not financial advice. Check eligibility, promotional conditions and product terms before applying.
Why choose an Easy Access Cash ISA?
Two-year rate certainty
Lock in your interest rate for 24 months, protecting against rate reductions during the fixed term.
Tax-free interest
Interest earned within your ISA is free from UK income tax.
Predictable returns
Know the agreed interest rate for two years, making it easier to plan your savings.
Longer-term planning
Suitable for savings you don't expect to need during the next two years.
Things to consider before applying
A 2-Year Fixed Cash ISA offers interest-rate certainty for longer than a one-year account, but it also means committing your savings for an extended period. Early withdrawals or transfers may incur substantial interest penalties. Check minimum deposits, funding deadlines, interest payment arrangements and maturity instructions. Consider whether you might need access to your money before the two-year term ends.
Frequently asked questions
Can I withdraw money from a 2-Year Fixed Cash ISA?
Cash ISA rules generally allow access to your money, but fixed-rate providers can impose substantial early-access penalties. Some accounts may require you to close the entire ISA rather than make partial withdrawals.
Check the terms carefully, including how much interest you could lose if you need your savings early.
Can the interest rate change during the two years?
No. The agreed fixed interest rate normally remains unchanged throughout the two-year term.
This protects you if market rates fall, but it also means you won't benefit from higher rates offered elsewhere unless you transfer or close your account, potentially incurring penalties.
Is a 2-Year Fixed Cash ISA better than a 1-Year Fixed ISA?
Not necessarily. A two-year account provides rate certainty for longer, while a one-year account gives you an earlier opportunity to review your savings.
Compare the rates available, early-access penalties and how long you're comfortable committing your money.
Can I transfer an existing Cash ISA into a 2-Year Fixed ISA?
Many providers accept transfers from existing Cash ISAs, although some impose restrictions or funding deadlines.
Use the new provider's official ISA transfer process to preserve the tax-free status of your savings. Check whether your existing provider charges an early-transfer penalty.
What happens when my 2-Year Fixed Cash ISA matures?
Your provider should contact you with maturity options before the term ends.
You may be able to transfer to another ISA, select a new fixed-rate product or move into an easy access account. Check what happens if you don't provide instructions, as the replacement interest rate could be lower.
What happens if interest rates rise during my fixed term?
Your existing fixed rate will normally remain unchanged, even if new Cash ISA products offer higher rates.
You would need to consider whether any potential benefit from switching outweighs the early-access or transfer penalties.