Fixed-rate savings bonds: when to lock in your rate

A fixed-rate savings bond is a savings account where you deposit money for a set period, typically 1, 2, 3 or 5 years, at a guaranteed rate. The rate is locked in when you open the account, so you know exactly what your savings will be worth when the bond matures.

In exchange, you agree not to withdraw your money until the term ends. Many fixed-rate bonds do not allow early access at all, while some permit it with an interest penalty (often 90 to 180 days of interest). That lack of access can be a benefit: it stops you dipping into savings meant for later.

Fixed-rate bonds are offered by high street banks, building societies and smaller online banks. Deposits with UK-authorised banks and building societies are protected by the Financial Services Compensation Scheme (FSCS) up to £120,000 per person per authorised firm. For money you will not need for a defined period, they usually pay more than easy access accounts.

Fixed-rate bond rates move with Bank Rate and with what markets expect rates to do next. With Bank Rate at 3.75% at the time of writing (October 2026), check current best buys rather than relying on any fixed figure. As a general pattern:

• 1-year bonds: a good balance of rate and flexibility, with your money only locked away for 12 months.
• 2-year bonds: rates are sometimes slightly lower than 1-year bonds when markets expect rate cuts, but they protect you against those cuts for longer.
• 3-year bonds: for money you are confident you will not need for three years, such as a holiday fund or wedding fund.
• 5-year bonds: the longest standard term, best when you want certainty for as long as possible and are sure you will not need the money.

Where to find the best rates: comparison tables from MoneySavingExpert, Which? and Savings Champion are updated regularly. Building societies and smaller banks often offer the highest rates. Our savings accounts guide explains how to compare.

Choosing a fixed-rate bond is partly a bet on where interest rates are heading.

Lock in when: markets expect rate cuts, you have money with a clear time horizon that matches a bond term, and fixed rates are clearly higher than easy access rates.

Stay flexible when: rates are rising, you might need the money sooner than expected, or the gap between fixed and easy access rates is small, so giving up access is not worth the extra return.

The ladder approach: if you are unsure, use a savings ladder. Split your money across 1, 2 and 3-year bonds so some benefits if rates fall (the longer bonds) and some becomes available soon if rates rise (the shorter bonds).

A practical rule of thumb: if fixed rates are comfortably above easy access rates and you will not need the money during the term, locking in usually makes sense. It also stops money drifting in an easy access account whose rate has quietly dropped.

Interest on fixed-rate bonds is taxable, but the Personal Savings Allowance protects many savers. Basic-rate taxpayers can earn £1,000 of savings interest a year tax-free, higher-rate taxpayers £500 and additional-rate taxpayers nothing. From 6 April 2027, savings income above your allowances will be taxed at 22%, 42% or 47%, two points higher than now.

Watch when interest is paid. Some bonds pay interest annually or monthly; others pay it all at maturity. Interest is generally taxed in the tax year it is paid or credited to you, so a bond that pays everything at the end can create one large payment that pushes you over your allowance in that year.

Example: £20,000 in a 3-year bond at 4% with interest compounded annually earns about £2,500 in total. If it is all paid at maturity, that whole amount counts towards that year's allowance.

Ways to manage tax: use your ISA allowance first, since fixed-rate Cash ISAs exist and their interest is tax-free; choose bonds that pay interest annually; split large sums across bonds maturing in different tax years; and if you are a couple, hold savings in the name of whoever has unused allowance.

NS&I: Premium Bonds pay tax-free prizes rather than interest and are backed by HM Treasury. They are not fixed-rate bonds, but some people hold them alongside fixed savings.

Step 1: compare rates. Check comparison sites for current best rates at the term you want. Note minimum deposits and check the provider is FSCS-protected.

Step 2: check FSCS cover. If you have more than £120,000 in savings, spread it across different authorised firms. Some brands share a single banking licence and count as one firm for the £120,000 limit (for example, Halifax and Bank of Scotland).

Step 3: apply. Most bonds can be opened online in minutes. You will need identification (often checked digitally), a UK address and the deposit ready to transfer.

Step 4: fund the account. Transfer your deposit within the funding window. Some bonds take a single deposit only; others accept top-ups during the funding period.

Step 5: set a maturity reminder. When a bond matures, the money often moves into a low-rate account with the same provider. Put the maturity date in your calendar so you can move it to the best available rate straight away.

If you are building up a lump sum to put into a bond, SYM can help: it tells you how much to put aside today and one tap logs it.