There are a number of reasons why you should start using tax preparation software. Perhaps the most important reason is that it can save you time. An efficient tax preparation tool will not let you miss the deadline, whether you are managing a few customers or in hundreds. It has proven to boost productivity as well. Furthermore, any omission or error can lead to audits, fines, and injunctions such as levies against your assets. Using tax preparation software can help avoid these costly mistakes.