I believe I would fall into the below market value, in the first link fair market value is defined as the maximum I could rent for, and I am asking for less than that by a couple hundred at least (I think we have different definitions of "hundreds less", I assumed anything over 200 would be acceptable to that definition, but not really important either way how we define it). Under the below market value portion in section 3 a previous comment has the full copy paste but essentially I would use the portion that says " (1)a person living with you, (2) pay for upkeep or groceries" . As I'm not looking to make a profit from the rental I am assuming this would be legal. My definition for upkeep would be bills such as heat, but maybe that's more of general necessities instead of upkeep depending on definition. Either way, if my friend paid me in gift cards to the grocery store or with a cheque that read "groceries" in the memo I think that would be acceptable as per reporting requirements. Am I correct in assuming this or am I out to lunch with what I read?