Beginning in the 2026 U.S. tax year, gamblers must report 100% of their winnings but may only deduct 90% of their gambling losses for tax purposes; previously gamblers could deduct 100% of their losses against winnings.
January 01, 2026
high
temporal
Change to U.S. federal tax treatment of gambling winnings and losses.
Sharing non-public information about a player's health, availability, or intentions with third parties can be exploited by gamblers and organized bettors to inform wagering decisions and distort markets.
October 24, 2025
high
risk
Insider information about players can create opportunities for targeted bets and illicit gambling activity.