Will she list the net from the tour as part of her personal income, or will she "donate" her services to the Clinton Foundation? Since it's a charity, she wouldn't have to pay taxes, and could direct the use of the money (or have Chelsea do it) later.
I’ve heard that every little thing the Clintons do, like servants, cars, house electricity bill, Chelsea’s wedding, etc is paid by the Clinton Foundation. More money they don’t have to account for.