Not sure if this is in the right forum. My Mother lives with me, her house is empty. Over the last number of years we have let friends (always an established couple) stay in it rent free, different scenarios - being unable to find somewhere to rent, house purchase fell through so in transition, trying to support themselves through college etc. We felt that someone staying in it keeps it from going into disrepair and we feel those we help would end up in the homeless category unless they went and stayed with relatives. My question is is there any tax liability for either party and is there anything wrong with what we are doing.