Spain lifted the World Cup trophy on July 19 after a 1-0 victory over Argentina in the 2026 final. The celebration lasted about as long as it took for US tax authorities to start doing math.
The IRS has claimed that a significant portion of Spain’s $50 million winner’s prize qualifies as US-sourced income, since the tournament was co-hosted on American soil. Some estimates peg the potential tax liability at up to $43.75 million, which would leave Spain’s federation with roughly $6.25 million from a $50 million check.
How the IRS math works
Under standard withholding rules, foreign entities earning US-sourced income face a 30% tax rate. Applied to the full $50 million, that would be roughly $15 million.
The effective tax burden could climb significantly higher depending on how many of Spain’s matches were played on US soil versus the other co-host nations, Canada and Mexico. The more games Spain played in the US, the larger the share of prize money the IRS can classify as domestically sourced. Some analyses have pegged the effective exposure at $43.75 million, suggesting the vast majority of Spain’s tournament path ran through American venues.
