<prompt> Human: Hi Reddit fam! This is my first post ever!Im 22 about to start working full-time. Growing up, Ive heard people talk about writing off expenses in their taxes since they owned a business. Ive always wondered how this happens? For example, one of my friends would call Ubers and write-off these as business expenses. How does the benefit work? Do any business owners here take advantage of this?Would also love links to any recommended info on this topic. Thanks!!  <response>: For example, one of my friends would call Ubers and write-off these as business expenses. How does the benefit work?Unless that was for business related travel your friend is committing tax fraud.Also, you cant write off i.e. deduct even legitimate business expenses unless you also have business INCOME. 