When it comes to tax preparation and the subsequent billing of your clients, it really is what you know that defines your price point. There a multitude of varying methods as to how to bill your tax client. Some tax preparers are charging by time, others charging by the form, and then there are some charging a flat fee. There is no perfect way to bill a tax client. Let's take a look at the billing methods that are most effective then it comes to being a great tax preparer.