Most people, when starting a business, will need to develop a business plan, and in that plan they will need to list their expenses, so they can work out how much they will need to charge for their products or services to make a profit. When doing so, it’s easy to factor in things like the cost of utilities and raw materials, but there are some sly expenses that so many businesses forget to factor in, which can come back to cause them a problem in the future.