DATEV is one of the most popular tax software solutions in Germany. It was designed to help streamline the collaboration between you and your accountant, making bookkeeping a breeze. This tool helps to simplify your bookkeeping process and keep you tax-compliant by helping you calculate the taxes that you owe, prepare comprehensive tax reports, file tax returns, and much more. While DATEV can benefit many it is especially helpful for small and medium businesses that work with an accountant.