Virtually every new business and small-business owner out there conducts at least some business from home. Among these are true home-based businesses, meaning there is no other office or shop to work out of. When you work solely from home, it's easy to forget that a lot of your household bills are really business expenses — or at least some portion of them are. You'll find that your business expenses will fall into one of two categories: completely business, or part business, part personal. Either way, you have to record the expenses as part of your ongoing bookkeeping.