William Hill Daily 25% Racing Bet Builder Winnings Boost
Horse racing enthusiasts looking to enhance their payout potential can take advantage of a daily promotion at William Hill. Running throughout the flat and jump seasons, this offer grants UK and Irish punters a 25% Winnings Boost every single day to apply on horse racing Bet Builders containing 3 or more legs.
Step-by-Step: How to Claim Your Daily 25% Winnings Boost
- Log in to your William Hill account via the website or mobile app.
- Build a horse racing Bet Builder with at least 3 selections at cumulative odds of 4.00 (3/1) or greater.
- Open the Rewards tab within your betslip prior to placing the wager and select the 25% Racing Bet Builder Winnings Boost.
- Stake up to £ 20 using real money funds from your main balance.
- Review your adjusted boost odds and potential extra returns displayed on the betslip, then confirm your wager; before getting started, read our comprehensive William Hill review.
Key Terms and Qualifying Conditions
📌 Daily Availability: Claimable once per customer every day between 00:01 and 23:59 UK time during the promotional period.
📌 Bet Builder Requirements: Valid exclusively on horse racing Bet Builders featuring a minimum of 3 selections with total odds of 4.00 (3/1) or higher.
📌 Staking Limit: Maximum qualifying real-money stake capped at £ 20 per boost.
📌 Payment & Fund Rules: Wagers must be funded using real cash balance. Free Bets cannot be combined with the Winnings Boost or used as qualifying stakes.
📌 Application Notice: The boost must be manually selected in the betslip prior to bet placement and cannot be applied retroactively.
📌 Eligibility Restrictions: Open to residents of Great Britain and Ireland aged 18+ using online or mobile channels only (ineligible in retail shops).
📌 Non-Transferable: Boosts apply to a single Bet Builder and cannot be split across multiple bets or exchanged for cash.
To explore further daily price boosts and racebook promotions, check out our updated directory of betting bonuses.


