Comparison · Savings · 2026
Structured Deposit vs Fixed Rate Bond UK 2026: Which Protects Your Capital?
A structured deposit protects your capital while linking your return to stock market performance over a fixed term. A fixed rate bond guarantees a known interest rate for its term, with no market risk at all. Here is how the two compare for 2026.
TL;DR - 30-Second Summary
- - Structured deposit: capital protected, return linked to a stock market index, can pay zero growth if the index falls
- - Fixed rate bond: guaranteed known rate for the term, no market risk, no upside beyond the stated rate
- - Both: typically FSCS-protected up to £85,000 and locked for the full term with no early access
Side by Side: Structured Deposit vs Fixed Rate Bond
| Feature | Structured Deposit | Fixed Rate Bond |
|---|---|---|
| Return basis | Linked to a stock market index | Guaranteed fixed rate |
| Capital protection | Protected if held to maturity | Protected — fixed return regardless |
| Upside potential | Can exceed a normal savings rate if index performs well | Capped at the stated rate |
| Downside risk | Can pay zero growth for several years | None — rate is guaranteed |
| Typical term | 3-6 years | 1-5 years |
| FSCS protection | Yes, up to £85,000 | Yes, up to £85,000 |
| Early access | Usually none | Rare, often with a penalty |
What Is a Structured Deposit?
A structured deposit is offered by a bank or building society and pays a return based on a formula linked to a stock market index, most commonly the FTSE 100, over a fixed term. Common structures include a fixed bonus paid only if the index is higher than its starting level on the maturity date, or a percentage participation in any index growth up to a cap. Because it is legally structured as a deposit rather than an investment, your original capital is returned in full at maturity regardless of how the index performs, provided the issuing institution remains solvent.
What Is a Fixed Rate Bond?
A fixed rate bond is a standard savings account that pays a set interest rate for an agreed term, with no link to stock markets at all. You deposit a lump sum, and the rate is locked in from the start, giving complete certainty over what you will earn by maturity. The trade-off for this certainty is that you cannot benefit from any strong stock market performance during the term, and most providers do not allow withdrawals before the bond matures.
Who Should Choose What?
Choose a structured deposit if...
- - You want some upside potential from stock markets
- - You are not willing to risk your original capital
- - You can commit funds for 3-6 years with no access
- - You accept the possibility of zero growth
Choose a fixed rate bond if...
- - You want a guaranteed, known return
- - You do not want any exposure to stock market movements
- - You want to compare a clear rate against other savings products
- - You prefer simplicity over the chance of a higher return
Frequently Asked Questions
What is a structured deposit?
A structured deposit is a savings product where your return depends on the performance of a stock market index (commonly the FTSE 100) over a fixed term, typically 3-6 years, while your original capital is protected because the product is structured as a deposit with a bank or building society. If the index rises above a set level, you get a bonus return; if it falls, you typically get your capital back but no growth.
What is a fixed rate bond?
A fixed rate bond (fixed rate savings account) pays a guaranteed rate of interest for a set term, commonly 1-5 years, regardless of what happens in the stock market. You know exactly what return you will get from day one, but you generally cannot access your money before maturity without an early withdrawal penalty or, in many cases, at all.
Is my capital protected in a structured deposit?
Yes, in a genuine structured deposit (as opposed to a structured investment or structured bond), your original capital is protected by the issuing bank, provided you hold it to maturity and the bank does not fail. This differs from structured investments, which can lose capital if the underlying index falls sharply.
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Are structured deposits covered by the FSCS?
Yes, structured deposits issued by UK-authorised banks and building societies are typically covered by the Financial Services Compensation Scheme up to £85,000 per person per institution, the same as ordinary savings accounts and fixed rate bonds. This is a key difference from structured investment products, which are usually not FSCS-protected in the same way.
Which typically gives a better return, a structured deposit or a fixed rate bond?
It depends entirely on stock market performance over the term. A fixed rate bond guarantees its stated rate regardless of markets. A structured deposit can pay significantly more if the linked index performs well, but can also pay nothing above your original capital if the index falls or stays flat — so the potential upside comes with the risk of earning zero return for several years.
Can I access my money early with either product?
Both are generally illiquid before maturity. Fixed rate bonds sometimes allow early access with a substantial interest penalty; many do not allow it at all. Structured deposits are almost always locked for the full term (often several years), with no early access option, since the return calculation depends on the index level only at maturity or on specific anniversary dates.
Do I pay tax on the returns from either product?
Yes, both are typically taxed as savings interest under the Personal Savings Allowance, using the same rules — £1,000 tax-free for basic rate taxpayers and £500 for higher rate taxpayers in 2026/27, with the additional rate band receiving no allowance. Any return above the allowance is taxed at your marginal income tax rate. Holding either inside a Cash ISA (where available) avoids this tax entirely.
Who tends to use structured deposits over a fixed rate bond?
Savers who want some exposure to potential stock market gains but are not willing to risk their original capital tend to use structured deposits, often as a small part of a wider portfolio. Savers who simply want a known, guaranteed return with no market risk at all tend to prefer a straightforward fixed rate bond.
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Disclaimer: Figures shown are typical market ranges for 2026 and are for general information only, not investment or tax advice. Structured deposit terms vary between providers and your capital is only protected if held to maturity and the issuing institution remains solvent. For personalised guidance, consult a regulated financial adviser.
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