Premium Bonds Explained: Your Complete Guide
Understand how Premium Bonds work and whether they are right for you
What Are Premium Bonds?
Premium Bonds are a savings product issued by NS&I (National Savings and Investments), a government-backed savings institution. Instead of paying interest, Premium Bonds enter you into a monthly prize draw for tax-free cash prizes.
Every pound saved becomes a bond with an equal chance of winning. The minimum purchase is £25 per bond, and you can hold up to £50,000 per person. Prizes range from £25 to the jackpot of £1 million.
Key fact: Your capital is completely safe - HM Treasury guarantees your money. You cannot lose a penny, even if you never win a prize.
How Premium Bonds Work
When you buy Premium Bonds, your money is entered into a monthly prize draw. A computerised random number generator (ERNIE) selects winners each month.
Prize Tiers
- Jackpot:2 x £1 million per month
- £100,000:3 prizes per month
- £50,000:6 prizes per month
- £25:Thousands of prizes monthly
Prize Rate
- Variable prize rate: 3.80% (NS&I, July 2026 draw onward)
- All prizes tax-free
- Capital fully guaranteed
- Easy access (1 working day)
Premium Bonds vs Savings Accounts
Whether Premium Bonds are better than savings accounts depends on your tax situation and how much you have saved:
| Factor | Premium Bonds | Savings Account |
|---|---|---|
| Return | Variable - depends on luck | Fixed interest rate |
| Tax | All prizes tax-free | Interest taxable (unless in ISA) |
| Capital | 100% guaranteed | FSCS protected up to £85,000 |
| Best for | Higher-rate taxpayers, savers who might win big | Predictable returns, FSCS protection |
The Math
With a 3.80% variable prize rate (tax-free) and 20% tax on savings interest, Premium Bonds effectively offer a similar return to a 4.75% gross savings account for basic-rate taxpayers, or 6.33% for higher-rate taxpayers. The more you save, the more attractive the tax-free nature becomes.
Are Premium Bonds Worth It?
Whether Premium Bonds make sense for you depends on your individual circumstances:
Premium Bonds May Suit You If:
- You are a higher or additional-rate taxpayer
- You have a substantial emergency fund (£10,000+)
- You enjoy the thrill of potentially winning
- You want 100% capital security with upside
- You are saving for a specific goal with time flexibility
A Traditional Savings Account May Suit You If:
- You need predictable, consistent returns
- You are a basic-rate taxpayer
- You have a smaller amount saved
- You prefer knowing exactly what you will earn
- You want to maximise interest on a smaller sum
Worked Example: £50,000 Compared
£50,000 is the maximum one person can hold in Premium Bonds. The table below shows the expected annual return on £50,000 held in Premium Bonds against the same balance in a top easy-access savings account at 4.50% gross, after tax at each UK income-tax band. Savings-account figures assume the Personal Savings Allowance is fully used elsewhere, so every pound of interest is taxable.
| Option | Expected annual return |
|---|---|
| £50,000 in Premium Bonds (3.80% variable, tax-free) | £1,900 (expected, not guaranteed) |
| £50,000 in a 4.50% savings account (0% tax) | £2,250 |
| £50,000 in a 4.50% savings account (20% basic-rate) | £1,800 |
| £50,000 in a 4.50% savings account (40% higher-rate) | £1,350 |
| £50,000 in a 4.50% savings account (45% additional-rate) | £1,237.50 |
Important: The Premium Bonds figure is an average across all bondholders, not a guaranteed return. Prizes are random, vary by chance, and some months most bonds win nothing. Capital is fully guaranteed by HM Treasury. The savings-account rate of 4.50% gross is illustrative of a top easy-access account in mid-2026; check current Best Buys before deciding.
Ready to Buy Premium Bonds?
Open an account directly with NS&I, the only provider of Premium Bonds and backed by HM Treasury. £25 minimum, £50,000 maximum per person.
Buy Premium Bonds on NS&IHow Delphina Helps
Delphina helps you understand your complete financial picture, including your savings and investments. Whether Premium Bonds are right for you depends on your overall financial strategy.
- See all your savings in one place
- Compare returns across different savings options
- Track progress toward your savings goals
- Make informed decisions about where to save
The Delphina Approach
We help you see your complete financial picture so you can make informed decisions about where to put your savings.
Every savings decision should align with your goals.
Ready to See Your Complete Financial Picture?
Understand where you stand and make informed decisions about your savings.
Disclaimer: Delphina provides financial guidance, not financial advice. Premium Bonds are just one savings option among many. The right choice depends on your individual circumstances, tax situation, and financial goals. NS&I is backed by HM Treasury.