Premium Bonds calculator
See what your NS&I Premium Bonds might win on average, based on the current 3.80% prize fund rate. The tool shows typical expected prize money and roughly how many prizes a year to expect.
Frequently asked questions
What are the odds of winning on Premium Bonds?
Each £1 bond has a 22,000 to 1 chance of winning a prize each month. More bonds means more chances, but nothing is guaranteed.
What is the prize fund rate?
It's the annual rate NS&I uses to size the prize pot — 3.80% from the July 2026 draw. It's an average across everyone, not a guaranteed return for you.
Are Premium Bonds prizes tax-free?
Yes, all Premium Bonds prizes are completely tax-free.
Is the average return realistic for me?
Not always. Because a few big prizes lift the average, most people with typical holdings earn a little less than the headline rate. It evens out more the more bonds you hold.
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