qqp question1: If I am the new owner of a multi family building and there are tenants at will can I adjust the rent amounts? question2: I am buying a new laptop for work (I am self employed), but the last one I bought is only a year and a half old. If I claim the new one entirely as a work expense, do I have to claim the old one as income if I sell it? And if so, can I do it at a discounted amount?