When it comes to gambling, there is no single answer when it comes to whether or not casinos report blackjack winnings to the IRS. However, most experts believe that most casinos do report the results of blackjack games to the IRS, as long as all applicable taxes have been paid.
The main reason for casinos reporting blackjack winnings to the IRS is to ensure that players are paying all necessary taxes. In order for casinos to legally operate in the United States, they are required by law to collect federal and state taxes from their customers.
This includes any winnings that players may earn from playing blackjack or any other casino game.
It should also be noted that not all casinos report blackjack winnings to the IRS. Some casinos may choose not to report any winnings earned from blackjack games at all, instead relying on customers to report their winnings themselves.