You are so smart for asking. All of the advice is good on this site. I work for CPA's so I am aware of the ramifications. Always check the rules for the prize. Most sponsors will issue you a 1099-MISC. IRS requires one if prize is over $600. Some sponsors will issue one to get the write off even if it is less. As Lidadarkside said, the IRS expects you to report all income. Rules will make it clear if a 1099 will be issued. For example, I won a trip for 5 to from Glamour, got a 1099-MISC for value of $8,000 that was true to the the ARV as I checked all of the separate components, air, hotel, etc., it can vary, per se, depending on where you fly from, how many people actually go. Some sponsors will pay taxes on the prize, again you must check the rules. I have won alot of other things and I never received a 1099.
The amount of taxes you pay on a prize really depends on your tax bracket in any given year. So you would be wise to speak with a tax person if you receive a large prize. Hindsight is 2020. Send me a message when you win a prize over $600, a smaller one would not be a big deal in taxes either way. A tax projection can be done that will let you know. Problem is if you win a trip for an event that will be taking place right away, you need to respond to them in just a few days, so be pro-active and contact a tax person at the same time. Best wishes for many wins! :wave: