Locking in Certainty: A Guide to the Best 5-Year Fixed-Rate ISAs
For savers looking to shield their hard-earned cash from market volatility and inflation, a 5-year fixed-rate Cash ISA offers a compelling proposition. By locking away your funds for half a decade, you secure a guaranteed interest rate while keeping every penny entirely free from UK income tax.
As the savings landscape shifts, choosing a long-term fix requires balancing peak headline rates against flexibility, provider reputation, and your own financial timeline.
Current Market Leaders: Top 5-Year Fixed ISA Rates
Competition among banks and building societies has kept long-term yields attractive. Leading accounts currently sit around the 5.00% to 5.25% AER range.
| Provider | Interest Rate (AER, Tax-Free) | Minimum Deposit | Key Features |
| :— | :— | :— | :— |
| Shawbrook Bank | 5.25% | £1,000 | Market-leading rate; accepts transfers in; monthly/annual interest. |
| Tandem Bank | 5.13% | £1 | Flexible ISA; low barrier to entry; monthly interest. |
| Castle Trust Bank | 5.12% | £1,000 | Competitive digital e-Cash ISA; interest paid on maturity. |
| Close Brothers | 5.12% | £10,000 | Suited for larger lump sums; strong institutional backing. |
| Skipton Building Society | 5.00% | £1 | Highly trusted mutual; low minimum opening deposit. |
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