.TAX2018 File

The tax2018 file extension is associated with the TurboTax version 2018, a tax preparation and financial suite for Microsoft Windows and Apple macOS (OS X) operating systems, developed by Intuit company.

The tax2018 file stores United States federal IRS tax data as well as income and personal data.

How to open:

You can open and work with these *.tax2018 files using TurboTax accounting software.

How to convert:

It is likely that tax returns forms can be exported to PDF at least. Perhaps some data conversion within TurboTax is also possible.