Using Turbo tax Home & business, where do I enter a solo 401K

In TurboTax Home and Business, please followthese steps:

1. Open your return
2. Click on Search at the top right of your screen
3. In the Search box, enter self-employed retirement and click on the magnifying glass icon
4. In the search result box, click on Jump to self-employed retirement
5. TurboTax will take you directly to the section where you can follow the interview and enter tour solo 401(k).

Your reply to my question does not work.  When I go to self-employed retirement in Turbo Tax Home & Business it asks if I contributed to a Keogh, SEP, SIMPLE, Individual 401(K), or Roth 401(K).  I did not, I contributed to a single participant (solo) 401(K).  The limits on these others plans is much smaller ($19,500) than the solo 401(K) ($61,000) and Turbo tax rejects my $49,838 contribution.  Please advise a remedy for this issue.  

According to the IRS, the one-participant 401(K) is the same as an individual 401(K) plan. When you go through the steps outlined by MinhT1, there will be a question that asks if you contributed to an individual or Roth 401 K plan.  You will say yes and complete the section. 

Please view this IRS publication as it addresses one-participant 401K plan one-participant 401K plan.

@Kmorckel241