The basis for most tax processes.
You would probably not expect it, but even as a tax automation company, we are still using Excel a lot. For example, during the blueprint phase and to make calculations clear for multiple users. There are many risks attached to company-wide use of spreadsheets, so we use Microsoft Excel only carefully. But for smaller organizations or as a first step in the tax automation world, Microsoft Excel can be of a considerable benefit.
A lot of Performance Management solutions offer add-ins with Excel. So, if you do not have a fully integrated tax process, you can still use the consolidation data from your Performance Management solution and connect that for the time being to a tax process in Excel.