Premium Bonds pay no interest. Instead, the money that would have been interest goes into a monthly prize draw, and this article explains how that fund is divided, what the headline rate and odds mean, and why an individual holder’s result can differ sharply from the average.
What are Premium Bonds, and who can hold them?
Premium Bonds are a savings product run by National Savings and Investments. According to the organisation, anyone aged 16 or over with a UK bank account can buy them, and a parent or legal guardian can buy them for a child under 16. The minimum purchase is £25, in whole pounds, and the maximum holding is £50,000 in total. Bond numbers above that limit are not eligible for prizes, and a child cannot hold more than £50,000 either.
Each £1 Bond is a separate entry in the draw. National Savings and Investments says every £1 Bond has the same odds, so holding more Bonds means more chances. Bonds must be held for a whole month before they enter a draw: National Savings and Investments’ example is that a November purchase enters the January draw.
How is the monthly prize fund worked out?
The fund is driven by a variable figure called the prize fund rate. According to National Savings and Investments’ October 2026 press release, the annual prize fund rate for the October draw is 4.35%, with odds of 21,000 to 1 for each £1 Bond number. National Savings and Investments’ product page gives the same two figures and says both are variable and can change.
The press release also shows how that rate turns into pounds. The October draw covered 137,483,797,618 eligible £1 Bonds and paid 6,546,849 prizes worth £498,378,775 in total. Illustrative arithmetic shows the link: £498,378,775 multiplied by 12 months and divided by 137,483,797,618 Bonds comes to about 4.35%. In other words, the prize fund rate is the yearly equivalent of the monthly pot spread across every eligible Bond.
The same figures explain the odds. Dividing 137,483,797,618 by 21,000 gives roughly 6.55 million, which matches the number of prizes. National Savings and Investments’ allocation page confirms the design: the total number of prizes is set equal to the number of eligible £1 Bonds divided by the odds.
How does National Savings and Investments split the pot between prizes?
National Savings and Investments’ allocation page says the fund is divided into three value bands, each taking a fixed share:
| Band | Share of fund | What it contains |
|---|---|---|
| Higher value | 10% | Two £1 million prizes, then prizes from £100,000 down to £5,000 |
| Medium value | 10% | £1,000 and £500 prizes, at one £1,000 prize for every three £500 prizes |
| Lower value | 80% | Equal numbers of £100 and £50 prizes, plus £25 prizes to reach the total |
The October 2026 prize table, published by National Savings and Investments, shows the result:
| Prize | Number in October 2026 |
|---|---|
| £1,000,000 | 2 |
| £100,000 | 96 |
| £50,000 | 191 |
| £25,000 | 382 |
| £10,000 | 957 |
| £5,000 | 1,914 |
| £1,000 | 19,934 |
| £500 | 59,802 |
| £100 | 2,371,145 |
| £50 | 2,371,145 |
| £25 | 1,721,281 |
Adding the £100, £50 and £25 prizes gives 6,463,571 out of 6,546,849 prizes, or about 98.7% of all prizes. Those prizes are worth about £398.7 million of the £498.4 million total, which is the 80% lower band. The jackpots are the rare exception rather than the rule.
Is the prize fund rate the same as interest?
No. The prize fund rate describes how large the pot is relative to the money entered, not what any one holder earns. National Savings and Investments says Premium Bonds pay no interest, and the rate is what funds the monthly draw.
If prizes were spread perfectly evenly, a holder would receive that rate on their balance. Prizes are not spread evenly. They are drawn at random, so one holder might receive nothing for a year while another receives several prizes. That difference between an average and an individual outcome is the central thing to understand about the product.
What do the odds mean for a typical holding?
Odds of 21,000 to 1 apply to each £1 Bond each month. The following worked example uses National Savings and Investments’ October figures and is illustrative, not a forecast, since both the rate and odds can change.
A £1,000 holding (1,000 Bonds).
- Expected prizes per month: 1,000 divided by 21,000 is about 0.048.
- Expected prizes per year: about 0.57, or just over one prize every two years on average.
- Average yearly prize value if the 4.35% rate held: 4.35% of £1,000 is £43.50.
- Chance of no prize at all across 12 draws: roughly 56%, using the standard calculation for repeated independent chances.
A £50,000 holding (the maximum).
- Expected prizes per month: 50,000 divided by 21,000 is about 2.4.
- Expected prizes per year: about 29.
The pattern is intuitive but worth stating: the more Bonds held, the closer actual results tend to sit to the average. Smaller holdings are more exposed to luck, which means a long run of no prizes is not evidence that something has gone wrong.
Are the prizes taxable?
According to National Savings and Investments, prizes are exempt from UK Income Tax and Capital Gains Tax. That matters because ordinary savings interest can be taxable above the allowances, as our explainer on how tax on savings interest works sets out. Premium Bond prizes do not count towards those allowances.
Tax-free does not mean the headline rate is directly comparable with an interest rate. A rate paid as interest is predictable and paid to every account holder. A prize fund rate is an average over a large number of holders, most of whom win small amounts or nothing in a given month. Comparing the two properly means looking at what is certain and what is random. For the ISA wrapper, which shelters interest rather than prizes, see our article on what the cash ISA limit cut means for savers.
How do prizes get paid, and can you take money out?
National Savings and Investments says winning numbers are generated by ERNIE, its random-number generator. Prizes paid to a bank account normally arrive by the seventh working day of the month. They can instead be reinvested in more Bonds, subject to the £50,000 cap, or sent by cheque. Winners of £25,000, £50,000 or £100,000 must return a claim form before payment, and National Savings and Investments says forms are sent on the first working day of the month. The £1 million prizes are presented in person.
Access is straightforward. National Savings and Investments says Bonds can be cashed in at any time, online, by phone or by post, with no notice or penalty. Withdrawals take three to five days to reach a bank account, so the money is accessible but not instant. That timing matters for anyone thinking about a practical safety net, where speed of access is part of the point.
One further point: a Bond that is cashed in stops being entered, and a replacement Bond must again be held for a whole month before it enters a draw.
Which questions help in judging the product?
Premium Bonds are a trade-off, and a few questions clarify it:
- How much of the balance is needed at short notice, and is a three to five day wait acceptable?
- Is the holder comfortable with a result that could be well below the average in any given year?
- Does the holder pay tax on savings interest, so that tax-free prizes carry more weight?
- Is the holding close to the £50,000 limit, where results track the average more closely?
None of these questions has a single right answer, and the figures are moving parts. National Savings and Investments states that prize values, odds and allocation can change at any time, so figures in this article reflect the October 2026 draw rather than a standing promise.
Conclusion: an average rate, an uneven outcome
Premium Bonds turn a monthly prize pot into random outcomes. The 4.35% prize fund rate and 21,000 to 1 odds in October describe the pot and the average chance, while most prizes are £25, £50 or £100 and many holders win nothing in a given month. Understanding that gap, and checking National Savings and Investments’ current figures before relying on any of them, is the sensible way to read the headline numbers.
This article is general information, not personalised financial advice. Rules, rates and odds change.
Sources: National Savings and Investments
