How much of the $5 million US Open prize money will Alcaraz take home after tax?

Carlos Alcaraz clinched his second US Open title, defeating Jannik Sinner and securing a record $5 million prize. Despite the historic payout, US tax regulations will significantly reduce Alcaraz’s earnings, potentially leaving him with around $2.5 million after federal and state taxes. A tax treaty with Spain offers some relief from double taxation.