Sometimes you are in a situation where someone is moving early, but hold on to the apartment just because they can. I try to let them know that if they do intend to move out early, they may receive a refund of the month they paid when the new resident moves in. If it's even partial, it's something. Obviously, we can't charge double rent. It's a motivator to get the keys asap before the end of the month and be able to turn quickly.