In the case of winning a certain Fantasy League, everything we’ve won is considered to be taxable income, so there’s no difference to income gained while gambling. It’s all taxed. For fantasy league winnings, we would have to fill the 1099-MISC form and not the W-2G, which was the form intended for gambling winnings. In some states, fantasy league sports are considered to require skill and not luck, which is the case when it comes to gambling in general.