Fixed-rate bond calculator

Estimate how much your lump sum could generate in a fixed bond.

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Table: sorted by interest rate, promoted deals first
£
30 of 995 results
Rate Invest Deposit protection Incentive Return
5.30% AER fixed for 2 years
From £1,000
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£3,326.43
at maturity
Lloyds Bank logo
6.25% AER fixed for 1 year
From £25
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£3,187.50
at maturity
Cambridge Building Society logo
Cambridge Building Society Extra Reward Regular Saver (Issue 2)
6% AER fixed for 1 year
From £100
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£3,180
at maturity
Hinckley & Rugby Building Society logo
Hinckley & Rugby Building Society Regular Saver Issue 3
6% AER fixed for 1 year
From £1
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£3,180
at maturity
Afin Bank logo
Afin Bank 5 Year Fixed Term Account Issue 15
5.40% AER fixed for 5 years
From £1,000
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£3,902.33
at maturity
Chetwood Bank logo
Chetwood Bank 5 Year Fixed Rate
5.36% AER fixed for 5 years
From £1,000
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£3,894.93
at maturity
GB Bank logo
5.35% AER fixed for 5 years
From £1,000
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£3,893.09
at maturity
DF Capital logo
DF Capital 5 Year Fixed Rate Deposit (Issue 9)
5.35% AER fixed for 5 years
From £1,000
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N/A
GB Bank logo
5.35% AER fixed for 5 years
From £1,000
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£3,893.09
at maturity
DF Capital logo
DF Capital 5 Year Fixed Rate Deposit (Issue 9) Maturity
5.35% AER fixed for 5 years
From £1,000
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£3,893.09
at maturity
Vanquis Bank logo
5.35% AER fixed for 5 years
From £1,000
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£3,893.09
at maturity
Close Brothers Savings logo
Close Brothers Ltd Close Savings 5 Year Fixed Rate Bond
5.35% AER fixed for 5 years
From £10,000
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N/A
Vanquis Bank logo
5.35% AER fixed for 5 years
From £1,000
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£3,893.09
at maturity
Oxbury Bank logo
Oxbury Personal 5 Year Bond Account - Issue 16
5.34% AER fixed for 5 years
From £1,000
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£3,891.24
at maturity
Afin Bank logo
Afin Bank 2 Year Fixed Term Account Issue 11
5.30% AER fixed for 2 years
From £1,000
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£3,326.43
at maturity
Nationwide Building Society logo
5.30% AER fixed for 2.5 years
From £1
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£3,413.44
at maturity
Nationwide Building Society logo
5.30% AER fixed for 2.5 years
From £1
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£3,413.44
at maturity
GB Bank logo
5.28% AER fixed for 2 years
From £1,000
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£3,325.16
at maturity
GB Bank logo
5.28% AER fixed for 2 years
From £1,000
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£3,325.16
at maturity
Afin Bank logo
Afin Bank 3 Year Fixed Term Account Issue 5
5.28% AER fixed for 3 years
From £1,000
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£3,500.73
at maturity
GB Bank logo
5.28% AER fixed for 3 years
From £1,000
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£3,500.73
at maturity
GB Bank logo
5.28% AER fixed for 3 years
From £1,000
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£3,500.73
at maturity
Vida Savings logo
Vida Savings 5 Year Fixed Rate Bond Monthly
5.28% AER fixed for 5 years
From £1,000
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£3,880.17
at maturity
Vida Savings logo
Vida Savings 5 Year Fixed Rate Bond
5.28% AER fixed for 5 years
From £1,000
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£3,880.17
at maturity
Secure Trust Bank logo
5.27% AER fixed for 2 years
From £1,000
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£3,324.53
at maturity
The Melton Building Society logo
Melton Building Society Fixed Rate Issue 35 to 18th December 2029
5.27% AER fixed for 3 years
From £1,000
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£3,499.73
at maturity
Vida Savings logo
Vida Savings 3 Year Fixed Rate Bond Monthly
5.27% AER fixed for 3 years
From £1,000
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£3,499.73
at maturity
Vida Savings logo
Vida Savings 3 Year Fixed Rate Bond
5.27% AER fixed for 3 years
From £1,000
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£3,499.73
at maturity
Secure Trust Bank logo
5.27% AER fixed for 3 years
From £1,000
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£3,499.73
at maturity
Secure Trust Bank logo
5.27% AER fixed for 5 years
From £1,000
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£3,878.33
at maturity
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Showing 30 of 995 results
Please note: This calculator provides estimations based on assumptions such as that you do not make withdrawals. You should always refer to the account provider for exact figures as they may vary from our results. Interest may be taxable.

If you have a lump sum and want a risk-free home for it for a set amount of time, then a fixed-rate bond will probably appeal. This can be especially true if you don’t want to lock the money away indefinitely (and so it doesn’t make sense to invest it in stocks and shares).

Fixed-rate bonds are about cold, hard maths. As well as the rate, there are a couple of other variables which together determine the gross figure you could generate.

What factors influence the amount of interest you make from a fixed-rate bond?

  • The amount you invest.
    You typically won’t able to top up your bond during the fixed term (most bonds give you a window of a couple of weeks from account opening, after which the account is effectively locked). It’s also not possible to withdraw funds from a bond before it matures (some banks may allow this but it’s likely to involve a set penalty or forfeiting interest). As such you’ll need to be fairly decided about the sum you’re willing to lock away. Since interest is calculated as a percentage of what you invest, the more you put in, the more you’ll get out.
  • The interest rate.
    The “annual equivalent rate” (AER) takes into account the effect of the interest compounding to tell you what you’ll make over a year. All banks have to calculate it in the same way, so it’s a good benchmark for consumers to use. One account might boast a rate of 4%, compounded monthly, while another might boast a rate of 4.05% compounded annually. You’re actually better off with the former, but the AERs of both of them (4.07% and 4.05% respectively) can tell you this so you don’t have to get your calculator out.
  • The duration of the bond.
    When you leave your money in a bond for longer, there’s more time to earn interest on interest. A 3-year bond at 4% will earn you more overall than a 2-year bond at 5%, for example. Generally speaking, the longer you’re willing to lock your money away with the bank for, the better the interest rate the bank will offer – so 5-year bonds typically have better rates than 2-year bonds, for example. This is because the bank has more time to put your money to work – hopefully generating it a greater return than it pays onwards to you. But this may not always be the case, and it’s worth looking at different terms to see what rates are on offer. If the banks believe that the economy has a positive outlook, and interest rates generally are likely to start to come down in the next few years, then they may prefer to steer customers towards shorter bonds so that they’re not stuck paying “over the odds” for years on end. Banks invest significant resources in trying to work out where the economy’s headed, and let’s be honest, they usually win.
  • Whether you let the interest compound or have it “paid away” (to generate an income).
    The most lucrative option in the long run is to bag the best AER you can, and then let the interest compound in the same account. If you’re looking to generate an income instead, then many bonds can do that, but you’ll lose the opportunity to earn interest on your interest. A minority of bond issuers will stipulate that interest must be paid away to a separate account, perhaps monthly or annually. This can allow the bank to tout a higher rate, safe in the knowledge that they won’t have to compound the interest.

With our fixed bond calculator, we’ve aimed to reveal the effects of each of these factors. We use “live” product data (updated daily) and scour the whole market. Don’t forget that your interest may be taxable and that there are alternatives to fixed-rate bonds (you may get a better return through investing in equities for example).

Our “Best for” picks highlight top options in specific categories based on our independent evaluation (see our full methodology), while “Promoted” tags indicate sponsored placements. Selected products may not suit everyone. We track selected market offers, which may not cover every product. Products are listed in no particular order unless specified, and inclusion or ordering may be influenced by popularity or commercial agreements. Most comparison table data is provided by Defaqto or sourced directly from providers. Always evaluate your own circumstances and consider independent advice before making major financial decisions.
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To make sure you get accurate and helpful information, this guide has been edited by Jason Loewenthal as part of our fact-checking process.
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Chris Lilly is Head of publishing at finder.com. He's a specialist in personal finance, from day-to-day banking to investing to borrowing, and is passionate about helping UK consumers make informed decisions about their money. In his spare time Chris likes forcing his kids to exercise more. See full bio

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