Terms & Disclaimer
Last updated: 9 June 2026
Not financial advice
This calculator provides estimates for general information only. It is not financial, investment, or tax advice. Figures are based on published rates that change over time and may be out of date. Always check current rates with NS&I and, if needed, speak to a regulated financial adviser before making decisions.
Estimates, not guarantees
Premium Bonds prizes are awarded by a random draw. The "expected" prize shown here is a statistical average across all bonds; your actual outcome can be higher or lower, and is typically lower than the average because a few very large prizes pull the average up. Past or expected results do not guarantee future outcomes.
Not affiliated with NS&I
This is an independent tool and is not affiliated with, endorsed by, or connected to NS&I, National Savings and Investments, or HM Government. "Premium Bonds" and "NS&I" are referenced for descriptive purposes only.
No warranty
The tool is provided "as is" without warranties of any kind. We are not liable for any loss arising from use of, or reliance on, the figures it produces.