Premium Bonds luck calculator

How lucky have your
Premium Bonds been?

Compare your winnings with the expected amount for each month, then share your luck score. Changing balances? Add monthly amounts or import your records. Your figures stay in your browser.

Your figures

Use the balance eligible for these draws. If it changed, add monthly amounts.

Draw history available: January 2025 – November 2026.

Private. No account needed. Your figures stay in this browser.

Example luck score

Example: £10,000 held, £550 won.

Luck score147
Above average

147% of expected winnings

100 matches the average
Your winnings£550.00
Expected winnings£374.58
Dec 2025 – Nov 2026+£175.42 vs expected

Based on the NS&I results for these months.

How unusual is this?

For this balance and period, the estimated chance of winning £550.00 or more is 12.32%.

What would a typical result look like?

The estimated middle result is £300. At least 8 in 10 results fall between £125 and £575. These are estimates, not a prediction of what you’ll win.

How these estimates work

Large prizes pull the average up, so a score below 100 can be normal. Your score compares winnings, not your ranking among savers. Past results don’t change your next draw’s chances.

How the score works

Your winnings vs expected

Example
Your winnings £550.00Expected winnings £374.58
Monthly amounts View table
Eligible balances, winnings and expected amounts
DrawEligible balanceYour winningsExpected
Dec 2025£10,000£0.00£30.00
Jan 2026£10,000£25.00£30.00
Feb 2026£10,000£25.00£30.00
Mar 2026£10,000£50.00£30.00
Apr 2026£10,000£0.00£27.50
May 2026£10,000£75.00£27.50
Jun 2026£10,000£25.00£27.50
Jul 2026£10,000£50.00£31.67
Aug 2026£10,000£50.00£31.67
Sept 2026£10,000£25.00£36.25
Oct 2026£10,000£75.00£36.25
Nov 2026£10,000£150.00£36.25

Keep track of your winnings

Download a backup to keep your results if you change devices or clear your browser data.

Want to estimate what you could win?

The Premium Bonds odds calculator shows winning chances, expected prizes and the chance of winning nothing. This luck calculator compares prizes you have already recorded.

How does the comparison work?

Read how the luck score is calculated, including changing balances and the difference between historical draws and repeated conditions.

Analytics by twelvebit