How do I open the 2023 federal tax document to check data input?

You can view your previous year return in TurboTax, by following these steps:

1. Select Documents from the menu, use the dropdown menu to choose the tax year you want, and select Download tax PDF.
2. On Tax home, scroll down and select Your tax returns & documents. Select the year you want and select Download/print return (PDF).

If you did not use TurboTax for 2023, you can view a copy of your tax return transcript on the IRS transcript website.  To pull your transcript, you will need to create an ID.me account or login to your ID.me account.  Then choose tax return transcript to view a transcript of your 2023 return.

If you want to see your actual entries you would have to download the .tax2023 data file and install the 2023 Desktop program to open it.  If you paid for Online you can ask for the Desktop program.   You can download the tax file for free.  Then you need to install the Desktop program.  But they only have the Desktop download program for the last 3 years.