I cannot find the file I worked on yesterday. I bought cd and then paid for an upgrade. How do I find the file I was working on?

[xiomborg]

By default, it gets saved to the "TurboTax" folder in your "Documents" folder.  (If you are using a windows machine.)  If you can't find it, use the search function on your hard drive for tax2018, which is the extension on a TurboTax 2018 file.  (If you don't know how to do that:  just open your ThisPC and in the upper right corner of the window you will see the search bar.  Just type in tax2018 and it should search your whole machine.)