When you purchase a UK Premium Bond, you lend money to the British government. Whenever you wish, you can return the bond and get your money back.
The British government has always honoured their bond obligations, and investing in UK Premium Bonds is therefore considered a low-risk investment. Low-risk is not the same as no-risk, however. Just as for money sitting in a bank account or kept hidden under your mattress, inflation can erode the true value of a Premium Bond. If you invest £25 in bonds today, the purchasing power of £25 might be less when you cash in the bond in the future.
UK Premium Bonds (NS&I): Benefits vs. Drawbacks
Structural risk, tax efficiency, capital security, and return mechanics
| Assessment Factor | Key Advantages | Critical Limitations & Risks |
|---|---|---|
| Capital Security | 100% HM Treasury Backing: Issued by National Savings and Investments (NS&I). Every penny deposited is backed directly by the UK government with no £85k FSCS ceiling. | Inflation Erosion Drag: While nominal capital cannot drop below £1 per bond, purchasing power steadily declines over time in real terms during elevated CPI periods. |
| Tax Treatment | 100% Tax-Free Winnings: All prize distributions (from £25 up to £1,000,000) are exempt from UK Income Tax and Capital Gains Tax. Does not count toward your Personal Savings Allowance (PSA). | Diminishing Value for Basic Taxpayers: Tax-free status offers little advantage to basic-rate taxpayers who remain well within their £1,000 annual Personal Savings Allowance. |
| Yield & Interest Structure | Life-Changing Jackpot Potential: Offers monthly participation in the ERNIE draw with two guaranteed £1,000,000 jackpots plus multiple £100k and £50k high-value tiers. | Zero Guaranteed Interest: No fixed or contractual AER. The advertised prize fund rate is a statistical mean skewed by top payouts; median returns for average holders are significantly lower. |
| Liquidity & Access | Penalty-Free Withdrawals: Funds can be redeemed online or via the NS&I app at any time without exit charges, notice windows, or early surrender penalties. | Lagged Draw Participation: Newly deposited funds must be held for a full calendar month before qualifying for their first monthly prize draw. |
| Account Thresholds | Low Barrier to Entry: Accessible starting deposit of just £25, making them easy to purchase for adults or as savings gifts for children under 16. | £50,000 Maximum Holding Cap: Total investment is capped at £50,000 per person, preventing high-net-worth individuals from sheltering larger sums outside the tax net. |
| Scale Efficiency | Better Predictability at Scale: Holding the full £50,000 allocation significantly smooths probability, delivering regular smaller prize wins that approach median rates. | Disadvantageous for Small Balances: Savers holding under £1,000 face steep odds (currently 21,000 to 1 per £1 unit per draw) and frequently go years without winning a single prize. |
A prize raffle instead of interest payments
You will not be paid any interest on your UK Premium Bond. Instead, you will automatically participate in each of the monthly Premium Bond raffles. In a sense, your bonds are like lottery tickets in this rattle. The more you have invested in Premium Bonds, the higher your statistical chance of winning one of the prizes. At the same time, it is definitely possible to win even if you´ve only invested £25 in bonds. It is all up to the luck of the draw. The largest prize is £1 million.
I want to invest in Premium Bonds
If you want to invest in UK Premium Bonds, contact the NS&I (National Savings and Investments). This is a state-owned savings bank in the UK and they are responsible for selling Premium Bonds. They also offer a range of other savings and investment opportunities. If you want to invest in other bonds you should open an account with a bond broker.
Smallest possible investment
You don´t need deep pockets to save in Premium Bonds, since the minimum possible purchase is just £25.
Biggest possible investment
You are allowed save a maximum of £50,000 in Premium Bonds.
How long before I can cash in my Premium Bond?
You can cash in your Premium Bond at any time. You do not need to hold it for a specific amount of time before you cash it in. If you have money that you wish to save for a personal ”emergency fund”, Premium Bonds can be a good choice since it is not difficult to turn the bonds into cash as needed.
What are the odds of winning something in the monthly raffle?
For each £1 bond, the odds are 34,500 to 1.
Prize sizes
The largest individual prize is £1 million.
The smallest individual prize is £25.
Each month, over 3 million individual prizes are raffled out, varying in size from £25 to £1 million.
How much money goes into the prize fund?
At the time of writing, the annual prize fund rate is 1%. Instead of paying 1% interest on the bonds, the government puts that money into the prize funds and raffle it out.
Exactly how much money that is raffled out each month varies somewhat. If we take a look at the month of April in 2021, a total of £88,215,800 was raffled out, divided into 3,068,376 different prizes. This is how the money was allocated:
- 2 prizes of £1 million each
- 5 prizes of £100,000 each
- 9 prizes of £50,000 each
- 20 prizes of £25,000 each
- 48 prizes of £10,000 each
- 96 prizes of £5,000 each
- 1,764 prizes of £1,000 each
- 5,292 prizes of £500 each
- 28,673 prizes of £100 each
- 28,673 prizes of £50 each
- 3,003,794 prizes of £25 each
Do I pay tax on my Premium Bond wins?
No, all wins from Premium Bonds are tax-free.
Can I buy Premium Bonds as gifts to children under 16?
Yes, you can.
The Premium Bonds will be controlled by the child´s parent/legal guardian until the child turns 16. It is possible for the parent/legal guardian to cash in the bonds, so only gift bonds to a child if you trust the parent/legal guardian to act responsibly. If the child has more than one parent/legal guardian, you will assign one of them as bond manager when you purchase the bonds.