I can't figure out how to enter my solo 401k contribution on TT Deluxe desktop version.

[AnthonyC · Accepted solution]

For the TT Deluxe desktop, it's actually going to be in the Wages and Income section.  See screenshots. 

Go to W & I and scroll down to Business Items - scroll down to Business Deductions and Credits - click Start.

The next screen will have the self-employed deductions.  Click Start next to Self-employed retirement plans.  Follow the prompts.