In the United States, all gambling winnings are taxable income and must be reported on your tax return. This includes winnings from sports betting sites like Fanatics casino. The site is required to report any winnings of $600 or more to the Internal Revenue Service (IRS), and customers will receive a Form W-2G if their winnings exceed this amount. It is important for customers to keep accurate records of their bets and winnings throughout the year, as this will make it easier to accurately report their gambling income on their tax return. Customers should consult with a tax professional if they have questions about how to report their gambling income or if they need help preparing their tax return.