UK Premium Bonds Guide (NS&I, Prize Rates, Odds 2026)

What Are Premium Bonds

Premium Bonds are a government savings product from NS&I (National Savings and Investments). Unlike a savings account that pays interest, each £1 bond is entered into a monthly prize draw. Instead of receiving regular interest, holders have the chance to win tax-free prizes every month. Your original investment is capital guaranteed by HM Treasury — you will never lose the money you put in. The trade-off is that you receive no guaranteed interest; in place of interest, holders win prizes instead. Some months you may win nothing, while other months you could win £25, £100, or even £1 million. Premium Bonds were first introduced in 1956 and have become a quintessentially British savings product. They are managed by NS&I, which also manages other government savings products including Direct Saver, Income Bonds, and Green Savings Bonds. You can invest from as little as £1 up to a maximum of £50,000 per person. The minimum purchase is £25 online (or £1 via standing order). Premium Bonds can be held by individuals aged 16 and over, or by parents or guardians for children under 16. Bonds must be held for a full calendar month before they are entered into the draw. For example, bonds purchased in June will be entered into the August draw. You can hold Premium Bonds in joint names, and they can be inherited if the holder dies. Compare with regular savings accounts →

Prize Rates 2026

The prize fund rate for Premium Bonds is set by NS&I and reviewed regularly, typically in line with market interest rates. From April 2026, the prize fund rate is 4.0%, down from 4.15% in 2025. This does not mean you will earn 4.0% on your bonds — it means the total value of all prizes paid out each month equals 4.0% of the total amount invested across all bond holders. The odds of winning per £1 bond are 22,000:1 for each monthly draw. This means each £1 bond has approximately a 1 in 22,000 chance of winning a prize each month. Your actual return depends entirely on luck. The average return for a median-luck holder with a significant holding (say £50,000) is approximately 4.0% before the odds skew. A median holder with £10,000 would expect to win approximately £400 worth of prizes over a year, but the distribution is uneven. Higher-rate taxpayers who would pay 40% on savings interest need an equivalent gross rate of approximately 4.67% from a savings account to match Premium Bonds' 4.0% prize fund rate, making Premium Bonds competitive on a post-tax basis. The prize distribution is: two £1 million prizes each month, four £100,000 prizes, seven £50,000 prizes, ten £25,000 prizes, and hundreds of thousands of £25 and £50 prizes. Most prizes (over 97%) are £25 or £50. You can choose to reinvest prizes in more Premium Bonds or have them paid directly to your bank account. The median holder with £5,000 would expect about 2 prizes per year. With £10,000, about 5 prizes per year. With £50,000, about 25 prizes per year. Compare Premium Bonds with Cash ISAs →

How the Draw Works

The monthly Premium Bonds draw uses a computer system called ERNIE (Electronic Random Number Indicator Equipment). ERNIE generates random bond numbers, and each winning number wins a prize. ERNIE was first introduced in 1956 using thermionic valves and has been updated through several generations. The current ERNIE 5 uses quantum random number generation technology to ensure truly random results. The draw takes place at the beginning of each month, and prize winners are published on the NS&I website and Prize Checker app. Prizes range from £25 to £1 million. Each month, there are two £1 million prizes, four £100,000 prizes, seven £50,000 prizes, ten £25,000 prizes, and many smaller prizes. The vast majority of prizes (over 97%) are £25 and £50. The total number of prizes each month is approximately 5–6 million. Probability of winning nothing varies by holding size. With £1,000 held for one year, the probability of winning nothing is approximately 62%. With £5,000, approximately 18%. With £10,000, approximately 0.6%. With £50,000 (the maximum), the probability of winning nothing in a year is extremely low — approximately 0.0001%. However, there is no guarantee — luck plays a significant role. You can check if you have won prizes on the NS&I website, the Premium Bonds prize checker app, or by post. Unclaimed prizes total over £80 million — always check if you have unclaimed winnings. Prizes do not expire, so even old bonds may have unclaimed prizes. When you die, your Premium Bonds can be passed to your beneficiaries, and any unclaimed prizes are part of your estate. Compare with savings accounts →

Maximum Holdings

The maximum holding limit for Premium Bonds is £50,000 per person. This limit has increased over time — it was £30,000 until 2015, then raised to £40,000, and finally to £50,000 in 2017. You can purchase Premium Bonds from £25 up to the £50,000 limit. Bonds can also be held in joint names, where two people share a holding, effectively doubling the household limit to £100,000 for a couple (each person can hold up to £50,000 in their own name plus a joint holding). Additional purchase up to £50,000 means that even if you already have bonds and receive prizes that take you over £50,000, you keep the bonds but cannot purchase more until your holding drops below the limit. You can reinvest prizes in more bonds without affecting the £50,000 limit. Inherited bonds from a deceased holder can be held as an Additional Permitted Subscription, separate from your own £50,000 limit. This means you can inherit a holding and keep it even if you already have £50,000 in your own name. The inherited bonds remain in the prize draw and can be held indefinitely or cashed out at any time. For couples, it is worth noting that each partner can hold the maximum £50,000, giving a household total of £100,000 in Premium Bonds, all with tax-free prizes and HM Treasury backing. This makes Premium Bonds an attractive option for higher-rate taxpayers who have already used their ISA allowance. Cash ISAs vs Premium Bonds →

Tax Treatment

The tax treatment of Premium Bonds is extremely favourable. Prizes are completely tax-free, no matter how much you win. You do not need to declare prizes on your tax return, report them to HMRC, or pay any income tax or capital gains tax on them. This is a significant advantage over savings accounts, where interest above the personal savings allowance is taxable at your marginal rate. No tax to declare means Premium Bonds do not need to be held in an ISA for tax efficiency — they are already tax-free. This makes them particularly valuable for higher-rate and additional-rate taxpayers who have limited personal savings allowance (£500 for higher-rate, £0 for additional-rate). If you are a higher-rate taxpayer with substantial cash savings, every pound of savings interest above £500 is taxed at 40%. Premium Bonds avoid this entirely. No impact on personal savings allowance — because Premium Bonds prizes are not classified as interest, they do not eat into your personal savings allowance. You can hold Premium Bonds alongside savings accounts and still use your full PSA for savings interest. Prizes are not counted as income for tax credits, means-testing, or the high-income child benefit charge. This is different from savings interest, which counts towards income for these purposes. For families claiming child benefit, a higher earner's savings interest can push them over the £50,000 threshold triggering the High Income Child Benefit Charge. Premium Bonds prizes avoid this issue entirely. See how Premium Bonds compare to ISAs →

Premium Bonds vs Cash ISA

Choosing between Premium Bonds and a Cash ISA depends on your tax situation, access needs, and attitude to risk (even if both are capital safe). Expected return: Premium Bonds offer a prize fund rate of 4.0% but with significant luck variation — some holders will earn more, some less. A Cash ISA offers a guaranteed rate of 3–5% depending on the account type and term. Tax treatment: both are tax-free. Premium Bonds prizes are automatically tax-free. Cash ISA interest is also tax-free. Access: Premium Bonds take 3–8 working days for withdrawals (you sell bonds and the money goes to your bank account). Cash ISAs can offer instant access (easy-access) or delayed access (notice accounts, fixed-rate). Risk: both are government protected. Premium Bonds are 100% backed by HM Treasury. Cash ISAs are FSCS-protected up to £85,000 per institution. Odds vs guaranteed: Premium Bonds offer the chance of a big win but no guaranteed return. Cash ISAs offer a predictable, guaranteed return. Premium Bonds are generally better for higher-rate and additional-rate taxpayers who have already used their ISA allowance and want additional tax-efficient savings. They are also appealing if you like the idea of potentially winning a life-changing sum while preserving your capital. Cash ISAs are better for those who want predictable returns, instant access, and certainty about how much interest they will earn. Many savers use both: hold emergency fund in an easy-access Cash ISA, and additional savings in Premium Bonds for the chance of bigger returns. Regular savings accounts compared →

FAQs

Can I lose money with Premium Bonds?

No. Your original investment is 100% guaranteed by HM Treasury. You will never lose your capital. However, if inflation is higher than your prize winnings, your purchasing power will decrease over time — the same risk as any cash savings product.

Are Premium Bonds better than a savings account?

It depends on your tax rate and luck. For higher-rate taxpayers, the 4.0% tax-free prize rate is equivalent to a gross savings rate of approximately 5.0% before tax. For basic-rate taxpayers, a 4.0% savings account may be better. Premium Bonds are best for higher-rate taxpayers, those who have used their ISA allowance, and anyone who enjoys the excitement of the monthly draw.

Can I hold Premium Bonds in an ISA?

Premium Bonds cannot be held in an ISA because they are already tax-free. However, NS&I offers other ISA products including a Direct ISA. Premium Bonds use a different tax wrapper — the bonds themselves are tax-free, so no ISA is needed.

What happens to Premium Bonds when I die?

Premium Bonds form part of your estate. They pass to your beneficiaries according to your will or the intestacy rules. The bonds continue to be entered into prize draws until they are cashed out or transferred. Beneficiaries can cash them out or keep them as an Additional Permitted Subscription.

Can I withdraw my money at any time?

Yes. You can cash out all or part of your Premium Bonds at any time. Withdrawals typically take 3–8 working days to reach your bank account. You can cash out online, by phone, or by post. There are no penalties for early withdrawal.