Full Breakdown
NS&I Boosts Premium Bond Prize Fund and Improves Odds
8/22/2026, 9:13:38 PM
NS&I Increases Premium Bond Prize Fund Rate
From the September 2026 draw, National Savings and Investments (NS&I) will raise the premium-bond prize-fund rate from 3.8 % to 4.35 % a year. The change improves the odds of winning on each £1 bond from 22,000-1 to 21,000-1 and adds roughly £63 million to the prize pot, taking it to about £497 million.
Recent Adjustments and Context
This is the second increase in two months; the rate was lifted from 3.3 % to 3.8 % for the July draw. The September adjustment also shifts the prize mix, increasing higher-value awards while cutting the number of £25 prizes. The £100,000 prize count rises from 83 to an estimated 95, and £50,000 prizes grow from 165 to 192, while £25 prizes fall from just under 2.3 million to about 1.7 million.
Data and Prize Structure
NS&I estimates 308,000 additional prizes will be available in September compared with the prior month. Holders of the maximum £50,000 allocation could earn a tax-free return of roughly £2,175 if the 4.35 % rate is realised. However, premium bonds pay no interest and are vulnerable to inflation. An FOI request by AJ Bell showed that 62 % of the 22 million bondholders have never won a prize, and fewer than 1 % of prizes between February 2025 and January 2026 went to accounts holding under £1,000.
Official Reactions
Caitlyn Eastell, analyst at Moneyfactscompare.co.uk, notes that premium bonds may appeal to savers who have exhausted their ISA allowance or who exceed the personal-savings allowance (£1,000 for basic-rate taxpayers, £500 for higher-rate, up to £5,000 for low earners). Sarah Coles at AJ Bell acknowledges the “decent” uplift in the prize-fund rate and the shortened odds but stresses that the average bondholder still wins nothing in a typical month.
Verbatim Quote
- “With the cost of living continuing to weigh on household budgets, it’s understandable savers may not want to leave their returns to chance.” — Sarah Coles, at AJ Bell
*From 6 April 2027, ISA rules will change for those under 65, capping the cash-ISA component at £12,000.*
