I would contact your state government and see what their rules are- each state seems to be different on their games/raffle rules. We usually file a reconciliation form that shows income/expenses--- and it's due within 30 days of the event.... I would check to make sure what the rules are for your area.
If your group is a 501c(3), it has non-profit status and is exempt from taxes. Instead, you would file a Form 990, which is looking for a statement of income/expenses.
Our PTSO had an auction this year comprised of donated items by businesses and members. Do we have to report this income to the IRS and pay taxes on it? We are getting conflicting answers and we want to air on the side of caution.
As a note, we had to pay in advance for a couple of the items. Great wolf lodge donated a package worth $400, but we had to give them $200 for it. Would we have to pay on that?