So I am probably going to be moving in with my girlfriend soon, and she owns a home clear and free but I will probably pay her "rent" anyway, until possibly we get married.
Anyway, I know it's probably silly to even talk about this since this is likely one of those situations where of course it's technically rental income but where the IRS would likely never say anything about this. But just for giggles, let's just pretend someone was wanting to be mean and, say, turn us in and the IRS actually did something. Let's assume she wanted a rental agreement with me just in case she decides she doesn't want to be with me anymore and would like me to move. Let's say I signed a rental agreement for $0 monthly rent. But then I wrote her a check every month for $500 and put "grocery/utility reimbursement" on it. This is air tight they have no case right??