Large Cashouts??

Hello,

I was recently wondering what some of the top players, as well as people with a big one-time hit do when they win a big multi-table tourney? Assuming one would pay taxes, say someone won $100K in a large tournament, how would they receive their winnings, do they just have it transferred into their account? I'm fairly sure that if someone wins an amount such as that at a casino, they have to fill out a tax form on the site, but what would one do if they won alot online, and wanted to put it in the bank? My apologizes if I am being ignorant on the subject, but I couldn't find much about this and I'd be curious as what to do if I was ever (hopefully!) in that situation, thanks for any input you may have.