NS&I Raises Premium Bond Prize Fund Rate to 4.35% for September 2026

National Savings and Investments has announced an improved prize fund rate and better odds for Premium Bond holders, effective from the September 2026 draw. The government-backed savings institution is increasing the annual prize fund rate to 4.35%, up from the previous 3.8%, marking the second rate increase within two months. This change improves the odds of each £1 bond winning a prize from 22,000 to 1 to 21,000 to 1. The September draw will distribute more than 6.5 million prizes worth a total of £497 million. This represents an increase of approximately £63 million and around 308,000 more prizes compared to the previous month.